From 1f6b2e6250eb646e1e7a79ddfcab7a65e427b1dd Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?=E5=B7=A6=E5=A4=A9=E7=A5=A5?= <2310358112@qq.com> Date: Fri, 21 Apr 2023 15:13:55 +0800 Subject: [PATCH] a --- .../AlarmAlertActivity.java | 61 + .../AlarmInitReceiver.java | 61 + src/代码注释_刘翱翔/AlarmReceiver.java | 24 + .../DateTimePicker.java | 438 ++++ .../DateTimePickerDialog.java | 80 + src/代码注释_刘翱翔/DropdownMenu.java | 57 + .../FoldersListAdapter.java | 80 + src/代码注释_刘翱翔/代码注释.md | 2072 ----------------- 8 files changed, 801 insertions(+), 2072 deletions(-) create mode 100644 src/代码注释_刘翱翔/AlarmAlertActivity.java create mode 100644 src/代码注释_刘翱翔/AlarmInitReceiver.java create mode 100644 src/代码注释_刘翱翔/AlarmReceiver.java create mode 100644 src/代码注释_刘翱翔/DateTimePicker.java create mode 100644 src/代码注释_刘翱翔/DateTimePickerDialog.java create mode 100644 src/代码注释_刘翱翔/DropdownMenu.java create mode 100644 src/代码注释_刘翱翔/FoldersListAdapter.java delete mode 100644 src/代码注释_刘翱翔/代码注释.md diff --git a/src/代码注释_刘翱翔/AlarmAlertActivity.java b/src/代码注释_刘翱翔/AlarmAlertActivity.java new file mode 100644 index 0000000..b0d38e8 --- /dev/null +++ b/src/代码注释_刘翱翔/AlarmAlertActivity.java @@ -0,0 +1,61 @@ +### AlarmInitReceiver.java + +```java +package net.micode.notes.ui; + +import android.app.AlarmManager; +import android.app.PendingIntent; +import android.content.BroadcastReceiver; +import android.content.ContentUris; +import android.content.Context; +import android.content.Intent; +import android.database.Cursor; + +import net.micode.notes.data.Notes; +import net.micode.notes.data.Notes.NoteColumns; + + +public class AlarmInitReceiver extends BroadcastReceiver { + + private static final String [] PROJECTION = new String [] { + NoteColumns.ID, + NoteColumns.ALERTED_DATE + }; + //对数据库的操作，调用标签ID和闹钟时间 + private static final int COLUMN_ID = 0; + private static final int COLUMN_ALERTED_DATE = 1; + + @Override + public void onReceive(Context context, Intent intent) { + long currentDate = System.currentTimeMillis(); + //System.currentTimeMillis()产生一个当前的时间,以毫秒为单位 + //这个毫秒其实就是自1970年1月1日0时起的毫秒数 + Cursor c = context.getContentResolver().query(Notes.CONTENT_NOTE_URI, + PROJECTION, + NoteColumns.ALERTED_DATE + ">? AND " + NoteColumns.TYPE + "=" + Notes.TYPE_NOTE, + new String[] { String.valueOf(currentDate) }, + //将long变量currentDate转化为字符串 + null); + //Cursor在这里的作用是通过查找数据库中的标签内容，找到和当前系统时间相等的标签 + + if (c != null) { + if (c.moveToFirst()) { + do { + long alertDate = c.getLong(COLUMN_ALERTED_DATE); + Intent sender = new Intent(context, AlarmReceiver.class); + sender.setData(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, c.getLong(COLUMN_ID))); + PendingIntent pendingIntent = PendingIntent.getBroadcast(context, 0, sender, 0); + AlarmManager alermManager = (AlarmManager) context + .getSystemService(Context.ALARM_SERVICE); + alermManager.set(AlarmManager.RTC_WAKEUP, alertDate, pendingIntent); + } while (c.moveToNext()); + } + c.close(); + } + //闹钟机制的启动，通常需要几个步骤 + //新建Intent、PendingIntent以及AlarmManager等 + //这里就是根据数据库里的闹钟时间创建一个闹钟机制 + } +} +``` + diff --git a/src/代码注释_刘翱翔/AlarmInitReceiver.java b/src/代码注释_刘翱翔/AlarmInitReceiver.java new file mode 100644 index 0000000..b0d38e8 --- /dev/null +++ b/src/代码注释_刘翱翔/AlarmInitReceiver.java @@ -0,0 +1,61 @@ +### AlarmInitReceiver.java + +```java +package net.micode.notes.ui; + +import android.app.AlarmManager; +import android.app.PendingIntent; +import android.content.BroadcastReceiver; +import android.content.ContentUris; +import android.content.Context; +import android.content.Intent; +import android.database.Cursor; + +import net.micode.notes.data.Notes; +import net.micode.notes.data.Notes.NoteColumns; + + +public class AlarmInitReceiver extends BroadcastReceiver { + + private static final String [] PROJECTION = new String [] { + NoteColumns.ID, + NoteColumns.ALERTED_DATE + }; + //对数据库的操作，调用标签ID和闹钟时间 + private static final int COLUMN_ID = 0; + private static final int COLUMN_ALERTED_DATE = 1; + + @Override + public void onReceive(Context context, Intent intent) { + long currentDate = System.currentTimeMillis(); + //System.currentTimeMillis()产生一个当前的时间,以毫秒为单位 + //这个毫秒其实就是自1970年1月1日0时起的毫秒数 + Cursor c = context.getContentResolver().query(Notes.CONTENT_NOTE_URI, + PROJECTION, + NoteColumns.ALERTED_DATE + ">? AND " + NoteColumns.TYPE + "=" + Notes.TYPE_NOTE, + new String[] { String.valueOf(currentDate) }, + //将long变量currentDate转化为字符串 + null); + //Cursor在这里的作用是通过查找数据库中的标签内容，找到和当前系统时间相等的标签 + + if (c != null) { + if (c.moveToFirst()) { + do { + long alertDate = c.getLong(COLUMN_ALERTED_DATE); + Intent sender = new Intent(context, AlarmReceiver.class); + sender.setData(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, c.getLong(COLUMN_ID))); + PendingIntent pendingIntent = PendingIntent.getBroadcast(context, 0, sender, 0); + AlarmManager alermManager = (AlarmManager) context + .getSystemService(Context.ALARM_SERVICE); + alermManager.set(AlarmManager.RTC_WAKEUP, alertDate, pendingIntent); + } while (c.moveToNext()); + } + c.close(); + } + //闹钟机制的启动，通常需要几个步骤 + //新建Intent、PendingIntent以及AlarmManager等 + //这里就是根据数据库里的闹钟时间创建一个闹钟机制 + } +} +``` + diff --git a/src/代码注释_刘翱翔/AlarmReceiver.java b/src/代码注释_刘翱翔/AlarmReceiver.java new file mode 100644 index 0000000..38c120c --- /dev/null +++ b/src/代码注释_刘翱翔/AlarmReceiver.java @@ -0,0 +1,24 @@ +### AlarmReceiver.java + +```java +package net.micode.notes.ui; + +import android.content.BroadcastReceiver; +import android.content.Context; +import android.content.Intent; + +public class AlarmReceiver extends BroadcastReceiver { + @Override + public void onReceive(Context context, Intent intent) { + intent.setClass(context, AlarmAlertActivity.class); + //启动AlarmAlertActivity + intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); + //activity要存在于activity的栈中 + //所以要新起一个栈装入启动的activity + context.startActivity(intent); + } +} +//这是实现alarm这个功能最接近用户层的包，基于上面的两个包 + +``` + diff --git a/src/代码注释_刘翱翔/DateTimePicker.java b/src/代码注释_刘翱翔/DateTimePicker.java new file mode 100644 index 0000000..536c6ac --- /dev/null +++ b/src/代码注释_刘翱翔/DateTimePicker.java @@ -0,0 +1,438 @@ +### DateTimePicker.java + +```java +package net.micode.notes.ui; + +import java.text.DateFormatSymbols; +import java.util.Calendar; + +import net.micode.notes.R; + + +import android.content.Context; +import android.text.format.DateFormat; +import android.view.View; +import android.widget.FrameLayout; +import android.widget.NumberPicker; + +public class DateTimePicker extends FrameLayout { + //FrameLayout是布局模板之一 + //所有的子元素全部在屏幕的右上方 + private static final boolean DEFAULT_ENABLE_STATE = true; + + private static final int HOURS_IN_HALF_DAY = 12; + private static final int HOURS_IN_ALL_DAY = 24; + private static final int DAYS_IN_ALL_WEEK = 7; + private static final int DATE_SPINNER_MIN_VAL = 0; + private static final int DATE_SPINNER_MAX_VAL = DAYS_IN_ALL_WEEK - 1; + private static final int HOUR_SPINNER_MIN_VAL_24_HOUR_VIEW = 0; + private static final int HOUR_SPINNER_MAX_VAL_24_HOUR_VIEW = 23; + private static final int HOUR_SPINNER_MIN_VAL_12_HOUR_VIEW = 1; + private static final int HOUR_SPINNER_MAX_VAL_12_HOUR_VIEW = 12; + private static final int MINUT_SPINNER_MIN_VAL = 0; + private static final int MINUT_SPINNER_MAX_VAL = 59; + private static final int AMPM_SPINNER_MIN_VAL = 0; + private static final int AMPM_SPINNER_MAX_VAL = 1; + //初始化控制模块 + private final NumberPicker mDateSpinner; + private final NumberPicker mHourSpinner; + private final NumberPicker mMinuteSpinner; + private final NumberPicker mAmPmSpinner; + //NumberPicker是数字选择器 + //这里定义的四个变量全部是在设置闹钟时需要选择的变量（如日期、时、分、上午或者下午） + private Calendar mDate; + //定义了Calendar类型的变量mDate，用于对时间操作 + private String[] mDateDisplayValues = new String[DAYS_IN_ALL_WEEK]; + + private boolean mIsAm; + + private boolean mIs24HourView; + + private boolean mIsEnabled = DEFAULT_ENABLE_STATE; + + private boolean mInitialising; + + private OnDateTimeChangedListener mOnDateTimeChangedListener; + + private NumberPicker.OnValueChangeListener mOnDateChangedListener = new NumberPicker.OnValueChangeListener() { + @Override + public void onValueChange(NumberPicker picker, int oldVal, int newVal) { + mDate.add(Calendar.DAY_OF_YEAR, newVal - oldVal); + updateDateControl(); + onDateTimeChanged(); + } + }; + //OnValueChangeListener，时间改变监听器，这里主要是对日期的监听 + //将现在日期的值传递给mDate；updateDateControl是同步操作 + + private NumberPicker.OnValueChangeListener mOnHourChangedListener = new NumberPicker.OnValueChangeListener() { + //这里是对小时Hour的监听 + @Override + public void onValueChange(NumberPicker picker, int oldVal, int newVal) { + boolean isDateChanged = false; + Calendar cal = Calendar.getInstance(); + //声明一个Calendar的变量cal + if (!mIs24HourView) { + if (!mIsAm && oldVal == HOURS_IN_HALF_DAY - 1 && newVal == HOURS_IN_HALF_DAY) { + cal.setTimeInMillis(mDate.getTimeInMillis()); + cal.add(Calendar.DAY_OF_YEAR, 1); + isDateChanged = true; + //对于12小时制时，晚上11点和12点交替时对日期的更改 + } else if (mIsAm && oldVal == HOURS_IN_HALF_DAY && newVal == HOURS_IN_HALF_DAY - 1) { + cal.setTimeInMillis(mDate.getTimeInMillis()); + cal.add(Calendar.DAY_OF_YEAR, -1); + isDateChanged = true; + } + //对于12小时制时，凌晨11点和12点交替时对日期的更改 + if (oldVal == HOURS_IN_HALF_DAY - 1 && newVal == HOURS_IN_HALF_DAY || + oldVal == HOURS_IN_HALF_DAY && newVal == HOURS_IN_HALF_DAY - 1) { + mIsAm = !mIsAm; + updateAmPmControl(); + }//对于12小时制时，中午11点和12点交替时对AM和PM的更改 + } else { + if (oldVal == HOURS_IN_ALL_DAY - 1 && newVal == 0) { + cal.setTimeInMillis(mDate.getTimeInMillis()); + cal.add(Calendar.DAY_OF_YEAR, 1); + isDateChanged = true; + //对于24小时制时，晚上11点和12点交替时对日期的更改 + } else if (oldVal == 0 && newVal == HOURS_IN_ALL_DAY - 1) { + cal.setTimeInMillis(mDate.getTimeInMillis()); + cal.add(Calendar.DAY_OF_YEAR, -1); + isDateChanged = true; + } + } + //对于12小时制时，凌晨11点和12点交替时对日期的更改 + int newHour = mHourSpinner.getValue() % HOURS_IN_HALF_DAY + (mIsAm ? 0 : HOURS_IN_HALF_DAY); + //通过数字选择器对newHour的赋值 + mDate.set(Calendar.HOUR_OF_DAY, newHour); + //通过set函数将新的Hour值传给mDate + onDateTimeChanged(); + if (isDateChanged) { + setCurrentYear(cal.get(Calendar.YEAR)); + setCurrentMonth(cal.get(Calendar.MONTH)); + setCurrentDay(cal.get(Calendar.DAY_OF_MONTH)); + } + } + }; + + private NumberPicker.OnValueChangeListener mOnMinuteChangedListener = new NumberPicker.OnValueChangeListener() { + @Override + //这里是对分钟Minute改变的监听 + public void onValueChange(NumberPicker picker, int oldVal, int newVal) { + int minValue = mMinuteSpinner.getMinValue(); + int maxValue = mMinuteSpinner.getMaxValue(); + int offset = 0; + //设置offset，作为小时改变的一个记录数据 + if (oldVal == maxValue && newVal == minValue) { + offset += 1; + } else if (oldVal == minValue && newVal == maxValue) { + offset -= 1; + } + //如果原值为59，新值为0，则offset加1 + //如果原值为0，新值为59，则offset减1 + if (offset != 0) { + mDate.add(Calendar.HOUR_OF_DAY, offset); + mHourSpinner.setValue(getCurrentHour()); + updateDateControl(); + int newHour = getCurrentHourOfDay(); + if (newHour >= HOURS_IN_HALF_DAY) { + mIsAm = false; + updateAmPmControl(); + } else { + mIsAm = true; + updateAmPmControl(); + } + } + mDate.set(Calendar.MINUTE, newVal); + onDateTimeChanged(); + } + }; + + private NumberPicker.OnValueChangeListener mOnAmPmChangedListener = new NumberPicker.OnValueChangeListener() { + //对AM和PM的监听 + @Override + public void onValueChange(NumberPicker picker, int oldVal, int newVal) { + mIsAm = !mIsAm; + if (mIsAm) { + mDate.add(Calendar.HOUR_OF_DAY, -HOURS_IN_HALF_DAY); + } else { + mDate.add(Calendar.HOUR_OF_DAY, HOURS_IN_HALF_DAY); + } + updateAmPmControl(); + onDateTimeChanged(); + } + }; + + public interface OnDateTimeChangedListener { + void onDateTimeChanged(DateTimePicker view, int year, int month, + int dayOfMonth, int hourOfDay, int minute); + } + + public DateTimePicker(Context context) { + this(context, System.currentTimeMillis()); + }//通过对数据库的访问，获取当前的系统时间 + + public DateTimePicker(Context context, long date) { + this(context, date, DateFormat.is24HourFormat(context)); + }//上面函数的得到的是一个天文数字（1970至今的秒数），需要DateFormat将其变得有意义 + + public DateTimePicker(Context context, long date, boolean is24HourView) { + super(context); + //获取系统时间 + mDate = Calendar.getInstance(); + mInitialising = true; + mIsAm = getCurrentHourOfDay() >= HOURS_IN_HALF_DAY; + inflate(context, R.layout.datetime_picker, this); + //如果当前Activity里用到别的layout，比如对话框layout + //还要设置这个layout上的其他组件的内容，就必须用inflate()方法先将对话框的layout找出来 + //然后再用findViewById()找到它上面的其它组件 + mDateSpinner = (NumberPicker) findViewById(R.id.date); + mDateSpinner.setMinValue(DATE_SPINNER_MIN_VAL); + mDateSpinner.setMaxValue(DATE_SPINNER_MAX_VAL); + mDateSpinner.setOnValueChangedListener(mOnDateChangedListener); + + mHourSpinner = (NumberPicker) findViewById(R.id.hour); + mHourSpinner.setOnValueChangedListener(mOnHourChangedListener); + mMinuteSpinner = (NumberPicker) findViewById(R.id.minute); + mMinuteSpinner.setMinValue(MINUT_SPINNER_MIN_VAL); + mMinuteSpinner.setMaxValue(MINUT_SPINNER_MAX_VAL); + mMinuteSpinner.setOnLongPressUpdateInterval(100); + mMinuteSpinner.setOnValueChangedListener(mOnMinuteChangedListener); + + String[] stringsForAmPm = new DateFormatSymbols().getAmPmStrings(); + mAmPmSpinner = (NumberPicker) findViewById(R.id.amPm); + mAmPmSpinner.setMinValue(AMPM_SPINNER_MIN_VAL); + mAmPmSpinner.setMaxValue(AMPM_SPINNER_MAX_VAL); + mAmPmSpinner.setDisplayedValues(stringsForAmPm); + mAmPmSpinner.setOnValueChangedListener(mOnAmPmChangedListener); + + // 更新控制组件的初始状态 + updateDateControl(); + updateHourControl(); + updateAmPmControl(); + + set24HourView(is24HourView); + + // 获取当前时间 + setCurrentDate(date); + + setEnabled(isEnabled()); + + //设置属性描述 + mInitialising = false; + } + + @Override + public void setEnabled(boolean enabled) { + if (mIsEnabled == enabled) { + return; + } + super.setEnabled(enabled); + mDateSpinner.setEnabled(enabled); + mMinuteSpinner.setEnabled(enabled); + mHourSpinner.setEnabled(enabled); + mAmPmSpinner.setEnabled(enabled); + mIsEnabled = enabled; + } + //setEnabled的作用 + //下面的各函数主要是对上面代码引用到的各函数功能的实现 + @Override + public boolean isEnabled() { + return mIsEnabled; + } + + //得到标准的时间 + public long getCurrentDateInTimeMillis() { + return mDate.getTimeInMillis(); + } + //实现函数——得到当前的秒数 + public void setCurrentDate(long date) { + Calendar cal = Calendar.getInstance(); + cal.setTimeInMillis(date); + setCurrentDate(cal.get(Calendar.YEAR), cal.get(Calendar.MONTH), cal.get(Calendar.DAY_OF_MONTH), + cal.get(Calendar.HOUR_OF_DAY), cal.get(Calendar.MINUTE)); + } + //实现函数功能——设置当前的时间，参数是date + + public void setCurrentDate(int year, int month, + int dayOfMonth, int hourOfDay, int minute) { + setCurrentYear(year); + setCurrentMonth(month); + setCurrentDay(dayOfMonth); + setCurrentHour(hourOfDay); + setCurrentMinute(minute); + + //实现函数功能——设置当前的时间，参数是各详细的变量 + //下面是得到year、month、day等值 + public int getCurrentYear() { + return mDate.get(Calendar.YEAR); + } + + + //设置标准时间 + public void setCurrentYear(int year) { + if (!mInitialising && year == getCurrentYear()) { + return; + } + mDate.set(Calendar.YEAR, year); + updateDateControl(); + onDateTimeChanged(); + } + + //得到一年中的月份 + public int getCurrentMonth() { + return mDate.get(Calendar.MONTH); + } + + //设置一年中的月份 + public void setCurrentMonth(int month) { + if (!mInitialising && month == getCurrentMonth()) { + return; + } + mDate.set(Calendar.MONTH, month); + updateDateControl(); + onDateTimeChanged(); + } + + //得到月份中的天数 + public int getCurrentDay() { + return mDate.get(Calendar.DAY_OF_MONTH); + } + + //设置月份中的天数 + public void setCurrentDay(int dayOfMonth) { + if (!mInitialising && dayOfMonth == getCurrentDay()) { + return; + } + mDate.set(Calendar.DAY_OF_MONTH, dayOfMonth); + updateDateControl(); + onDateTimeChanged(); + } + + 得到在0-23中的现在时间数 + public int getCurrentHourOfDay() { + return mDate.get(Calendar.HOUR_OF_DAY); + } + + private int getCurrentHour() { + if (mIs24HourView){ + return getCurrentHourOfDay(); + } else { + int hour = getCurrentHourOfDay(); + if (hour > HOURS_IN_HALF_DAY) { + return hour - HOURS_IN_HALF_DAY; + } else { + return hour == 0 ? HOURS_IN_HALF_DAY : hour; + } + } + } + + //设置时间,在0-23 + public void setCurrentHour(int hourOfDay) { + if (!mInitialising && hourOfDay == getCurrentHourOfDay()) { + return; + } + mDate.set(Calendar.HOUR_OF_DAY, hourOfDay); + if (!mIs24HourView) { + if (hourOfDay >= HOURS_IN_HALF_DAY) { + mIsAm = false; + if (hourOfDay > HOURS_IN_HALF_DAY) { + hourOfDay -= HOURS_IN_HALF_DAY; + } + } else { + mIsAm = true; + if (hourOfDay == 0) { + hourOfDay = HOURS_IN_HALF_DAY; + } + } + updateAmPmControl(); + } + mHourSpinner.setValue(hourOfDay); + onDateTimeChanged(); + } + + //得到标准的分钟 + public int getCurrentMinute() { + return mDate.get(Calendar.MINUTE); + } + + //设置标准的分钟 + public void setCurrentMinute(int minute) { + if (!mInitialising && minute == getCurrentMinute()) { + return; + } + mMinuteSpinner.setValue(minute); + mDate.set(Calendar.MINUTE, minute); + onDateTimeChanged(); + } + + public boolean is24HourView () { + return mIs24HourView; + } + + //设置24小时或者12小时上下午 + public void set24HourView(boolean is24HourView) { + if (mIs24HourView == is24HourView) { + return; + } + mIs24HourView = is24HourView; + mAmPmSpinner.setVisibility(is24HourView ? View.GONE : View.VISIBLE); + int hour = getCurrentHourOfDay(); + updateHourControl(); + setCurrentHour(hour); + updateAmPmControl(); + } + + private void updateDateControl() { + Calendar cal = Calendar.getInstance(); + cal.setTimeInMillis(mDate.getTimeInMillis()); + cal.add(Calendar.DAY_OF_YEAR, -DAYS_IN_ALL_WEEK / 2 - 1); + mDateSpinner.setDisplayedValues(null); + for (int i = 0; i < DAYS_IN_ALL_WEEK; ++i) { + cal.add(Calendar.DAY_OF_YEAR, 1); + mDateDisplayValues[i] = (String) DateFormat.format("MM.dd EEEE", cal); + } + mDateSpinner.setDisplayedValues(mDateDisplayValues); + mDateSpinner.setValue(DAYS_IN_ALL_WEEK / 2); + mDateSpinner.invalidate(); + } + // 对于星期几的算法 + + private void updateAmPmControl() { + if (mIs24HourView) { + mAmPmSpinner.setVisibility(View.GONE); + } else { + int index = mIsAm ? Calendar.AM : Calendar.PM; + mAmPmSpinner.setValue(index); + mAmPmSpinner.setVisibility(View.VISIBLE); + } + // 对于上下午操作的算法 + } + + private void updateHourControl() { + if (mIs24HourView) { + mHourSpinner.setMinValue(HOUR_SPINNER_MIN_VAL_24_HOUR_VIEW); + mHourSpinner.setMaxValue(HOUR_SPINNER_MAX_VAL_24_HOUR_VIEW); + } else { + mHourSpinner.setMinValue(HOUR_SPINNER_MIN_VAL_12_HOUR_VIEW); + mHourSpinner.setMaxValue(HOUR_SPINNER_MAX_VAL_12_HOUR_VIEW); + } + // 对与小时的算法 + } + + //设置回调函数,如果出现null的错误 + public void setOnDateTimeChangedListener(OnDateTimeChangedListener callback) { + mOnDateTimeChangedListener = callback; + } + + private void onDateTimeChanged() { + if (mOnDateTimeChangedListener != null) { + mOnDateTimeChangedListener.onDateTimeChanged(this, getCurrentYear(), + getCurrentMonth(), getCurrentDay(), getCurrentHourOfDay(), getCurrentMinute()); + } + } +} + + +``` + diff --git a/src/代码注释_刘翱翔/DateTimePickerDialog.java b/src/代码注释_刘翱翔/DateTimePickerDialog.java new file mode 100644 index 0000000..d1dc3e4 --- /dev/null +++ b/src/代码注释_刘翱翔/DateTimePickerDialog.java @@ -0,0 +1,80 @@ +### FoldersListAdapter.java + +```java +package net.micode.notes.ui; + +import android.content.Context; +import android.database.Cursor; +import android.view.View; +import android.view.ViewGroup; +import android.widget.CursorAdapter; +import android.widget.LinearLayout; +import android.widget.TextView; + +import net.micode.notes.R; +import net.micode.notes.data.Notes; +import net.micode.notes.data.Notes.NoteColumns; + + +public class FoldersListAdapter extends CursorAdapter { + //CursorAdapter是Cursor和ListView的接口 + //FoldersListAdapter继承了CursorAdapter的类 + //主要作用是便签数据库和用户的数据交流 + //这里就是用folder（文件夹）的形式展现给用户 + public static final String [] PROJECTION = { + NoteColumns.ID, + NoteColumns.SNIPPET + }; + //调用数据库中便签的ID和片段 + + public static final int ID_COLUMN = 0; + public static final int NAME_COLUMN = 1; + + public FoldersListAdapter(Context context, Cursor c) { + super(context, c); + } + //数据库操作 + + @Override + public View newView(Context context, Cursor cursor, ViewGroup parent) { + //ViewGroup是容器 + return new FolderListItem(context); + } + //创建一个文件夹，对于各文件夹中子标签的初始化 + + @Override + public void bindView(View view, Context context, Cursor cursor) { + if (view instanceof FolderListItem) { + String folderName = (cursor.getLong(ID_COLUMN) == Notes.ID_ROOT_FOLDER) ? context + .getString(R.string.menu_move_parent_folder) : cursor.getString(NAME_COLUMN); + ((FolderListItem) view).bind(folderName); + } + } + //将各个布局文件绑定起来 + + public String getFolderName(Context context, int position) { + Cursor cursor = (Cursor) getItem(position); + return (cursor.getLong(ID_COLUMN) == Notes.ID_ROOT_FOLDER) ? context + .getString(R.string.menu_move_parent_folder) : cursor.getString(NAME_COLUMN); + } + //根据数据库中标签的ID得到标签的各项内容 + + private class FolderListItem extends LinearLayout { + private TextView mName; + + public FolderListItem(Context context) { + super(context); + //操作数据库 + inflate(context, R.layout.folder_list_item, this); + //根据布局文件的名字等信息将其找出来 + mName = (TextView) findViewById(R.id.tv_folder_name); + } + + public void bind(String name) { + mName.setText(name); + } + } + +} +``` + diff --git a/src/代码注释_刘翱翔/DropdownMenu.java b/src/代码注释_刘翱翔/DropdownMenu.java new file mode 100644 index 0000000..f1d5843 --- /dev/null +++ b/src/代码注释_刘翱翔/DropdownMenu.java @@ -0,0 +1,57 @@ +### DropdownMenu.java + +```java +package net.micode.notes.ui; + +import android.content.Context; +import android.view.Menu; +import android.view.MenuItem; +import android.view.View; +import android.view.View.OnClickListener; +import android.widget.Button; +import android.widget.PopupMenu; +import android.widget.PopupMenu.OnMenuItemClickListener; + +import net.micode.notes.R; + +public class DropdownMenu { + private Button mButton; + private PopupMenu mPopupMenu; + //声明一个下拉菜单 + private Menu mMenu; + + public DropdownMenu(Context context, Button button, int menuId) { + mButton = button; + mButton.setBackgroundResource(R.drawable.dropdown_icon); + //设置这个view的背景 + mPopupMenu = new PopupMenu(context, mButton); + mMenu = mPopupMenu.getMenu(); + mPopupMenu.getMenuInflater().inflate(menuId, mMenu); + //MenuInflater是用来实例化Menu目录下的Menu布局文件 + //根据ID来确认menu的内容选项 + mButton.setOnClickListener(new OnClickListener() { + public void onClick(View v) { + mPopupMenu.show(); + } + }); + } + + public void setOnDropdownMenuItemClickListener(OnMenuItemClickListener listener) { + if (mPopupMenu != null) { + mPopupMenu.setOnMenuItemClickListener(listener); + } + //设置菜单的监听 + } + + public MenuItem findItem(int id) { + return mMenu.findItem(id); + } + //对于菜单选项的初始化，根据索引搜索菜单需要的选项 + + public void setTitle(CharSequence title) { + mButton.setText(title); + } + //布局文件，设置标题 +} +``` + diff --git a/src/代码注释_刘翱翔/FoldersListAdapter.java b/src/代码注释_刘翱翔/FoldersListAdapter.java new file mode 100644 index 0000000..d1dc3e4 --- /dev/null +++ b/src/代码注释_刘翱翔/FoldersListAdapter.java @@ -0,0 +1,80 @@ +### FoldersListAdapter.java + +```java +package net.micode.notes.ui; + +import android.content.Context; +import android.database.Cursor; +import android.view.View; +import android.view.ViewGroup; +import android.widget.CursorAdapter; +import android.widget.LinearLayout; +import android.widget.TextView; + +import net.micode.notes.R; +import net.micode.notes.data.Notes; +import net.micode.notes.data.Notes.NoteColumns; + + +public class FoldersListAdapter extends CursorAdapter { + //CursorAdapter是Cursor和ListView的接口 + //FoldersListAdapter继承了CursorAdapter的类 + //主要作用是便签数据库和用户的数据交流 + //这里就是用folder（文件夹）的形式展现给用户 + public static final String [] PROJECTION = { + NoteColumns.ID, + NoteColumns.SNIPPET + }; + //调用数据库中便签的ID和片段 + + public static final int ID_COLUMN = 0; + public static final int NAME_COLUMN = 1; + + public FoldersListAdapter(Context context, Cursor c) { + super(context, c); + } + //数据库操作 + + @Override + public View newView(Context context, Cursor cursor, ViewGroup parent) { + //ViewGroup是容器 + return new FolderListItem(context); + } + //创建一个文件夹，对于各文件夹中子标签的初始化 + + @Override + public void bindView(View view, Context context, Cursor cursor) { + if (view instanceof FolderListItem) { + String folderName = (cursor.getLong(ID_COLUMN) == Notes.ID_ROOT_FOLDER) ? context + .getString(R.string.menu_move_parent_folder) : cursor.getString(NAME_COLUMN); + ((FolderListItem) view).bind(folderName); + } + } + //将各个布局文件绑定起来 + + public String getFolderName(Context context, int position) { + Cursor cursor = (Cursor) getItem(position); + return (cursor.getLong(ID_COLUMN) == Notes.ID_ROOT_FOLDER) ? context + .getString(R.string.menu_move_parent_folder) : cursor.getString(NAME_COLUMN); + } + //根据数据库中标签的ID得到标签的各项内容 + + private class FolderListItem extends LinearLayout { + private TextView mName; + + public FolderListItem(Context context) { + super(context); + //操作数据库 + inflate(context, R.layout.folder_list_item, this); + //根据布局文件的名字等信息将其找出来 + mName = (TextView) findViewById(R.id.tv_folder_name); + } + + public void bind(String name) { + mName.setText(name); + } + } + +} +``` + diff --git a/src/代码注释_刘翱翔/代码注释.md b/src/代码注释_刘翱翔/代码注释.md deleted file mode 100644 index 30e3df0..0000000 --- a/src/代码注释_刘翱翔/代码注释.md +++ /dev/null @@ -1,2072 +0,0 @@ -## 1、AlarmAlertActivity.java - -```java -package net.micode.notes.ui; - -import android.app.Activity; -import android.app.AlertDialog; -import android.content.Context; -import android.content.DialogInterface; -import android.content.DialogInterface.OnClickListener; -import android.content.DialogInterface.OnDismissListener; -import android.content.Intent; -import android.media.AudioManager; -import android.media.MediaPlayer; -import android.media.RingtoneManager; -import android.net.Uri; -import android.os.Bundle; -import android.os.PowerManager; -import android.provider.Settings; -import android.view.Window; -import android.view.WindowManager; - -import net.micode.notes.R; -import net.micode.notes.data.Notes; -import net.micode.notes.tool.DataUtils; - -import java.io.IOException; - -public class AlarmAlertActivity extends Activity implements OnClickListener, OnDismissListener { - private long mNoteId; //文本在数据库存储中的ID号 - private String mSnippet; //闹钟提示时出现的文本片段 - private static final int SNIPPET_PREW_MAX_LEN = 60; - MediaPlayer mPlayer; - - @Override - protected void onCreate(Bundle savedInstanceState) { - super.onCreate(savedInstanceState); - //Bundle类型的数据与Map类型的数据相似，都是以key-value的形式存储数据的 - //onsaveInstanceState方法是用来保存Activity的状态的 - //能从onCreate的参数savedInsanceState中获得状态数据 - requestWindowFeature(Window.FEATURE_NO_TITLE); - //界面显示——无标题 - - final Window win = getWindow(); - win.addFlags(WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED); - - if (!isScreenOn()) { - win.addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON - //保持窗体点亮 - | WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON - //将窗体点亮 - | WindowManager.LayoutParams.FLAG_ALLOW_LOCK_WHILE_SCREEN_ON - //允许窗体点亮时锁屏 - | WindowManager.LayoutParams.FLAG_LAYOUT_INSET_DECOR); - }//在手机锁屏后如果到了闹钟提示时间，点亮屏幕 - - Intent intent = getIntent(); - - try { - mNoteId = Long.valueOf(intent.getData().getPathSegments().get(1)); - mSnippet = DataUtils.getSnippetById(this.getContentResolver(), mNoteId); - //根据ID从数据库中获取标签的内容； - //getContentResolver（）是实现数据共享，实例存储。 - mSnippet = mSnippet.length() > SNIPPET_PREW_MAX_LEN ? mSnippet.substring(0, - SNIPPET_PREW_MAX_LEN) + getResources().getString(R.string.notelist_string_info) - : mSnippet; - //判断标签片段是否达到符合长度 - } catch (IllegalArgumentException e) { - e.printStackTrace(); - return; - } - /* - try - { - // 代码区 - } - catch(Exception e) - { - // 异常处理 - } - 代码区如果有错误，就会返回所写异常的处理。*/ - mPlayer = new MediaPlayer(); - if (DataUtils.visibleInNoteDatabase(getContentResolver(), mNoteId, Notes.TYPE_NOTE)) { - showActionDialog(); - //弹出对话框 - playAlarmSound(); - //闹钟提示音激发 - } else { - finish(); - //完成闹钟动作 - } - } - - private boolean isScreenOn() { - //判断屏幕是否锁屏，调用系统函数判断，最后返回值是布尔类型 - PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE); - return pm.isScreenOn(); - } - - private void playAlarmSound() { - //闹钟提示音激发 - Uri url = RingtoneManager.getActualDefaultRingtoneUri(this, RingtoneManager.TYPE_ALARM); - //调用系统的铃声管理URI，得到闹钟提示音 - int silentModeStreams = Settings.System.getInt(getContentResolver(), - Settings.System.MODE_RINGER_STREAMS_AFFECTED, 0); - - if ((silentModeStreams & (1 << AudioManager.STREAM_ALARM)) != 0) { - mPlayer.setAudioStreamType(silentModeStreams); - } else { - mPlayer.setAudioStreamType(AudioManager.STREAM_ALARM); - } - try { - mPlayer.setDataSource(this, url); - //方法：setDataSource(Context context, Uri uri) - //解释：无返回值，设置多媒体数据来源【根据 Uri】 - mPlayer.prepare(); - //准备同步 - mPlayer.setLooping(true); - //设置是否循环播放 - mPlayer.start(); - //开始播放 - } catch (IllegalArgumentException e) { - // TODO Auto-generated catch block - e.printStackTrace(); - //e.printStackTrace()函数功能是抛出异常， 还将显示出更深的调用信息 - //System.out.println(e)，这个方法打印出异常，并且输出在哪里出现的异常 - } catch (SecurityException e) { - // TODO Auto-generated catch block - e.printStackTrace(); - } catch (IllegalStateException e) { - // TODO Auto-generated catch block - e.printStackTrace(); - } catch (IOException e) { - // TODO Auto-generated catch block - e.printStackTrace(); - } - } - - private void showActionDialog() { - AlertDialog.Builder dialog = new AlertDialog.Builder(this); - //AlertDialog的构造方法全部是Protected的 - //所以不能直接通过new一个AlertDialog来创建出一个AlertDialog。 - //要创建一个AlertDialog，就要用到AlertDialog.Builder中的create()方法 - //如这里的dialog就是新建了一个AlertDialog - dialog.setTitle(R.string.app_name); - //为对话框设置标题 - dialog.setMessage(mSnippet); - //为对话框设置内容 - dialog.setPositiveButton(R.string.notealert_ok, this); - //给对话框添加"Yes"按钮 - if (isScreenOn()) { - dialog.setNegativeButton(R.string.notealert_enter, this); - }//对话框添加"No"按钮 - dialog.show().setOnDismissListener(this); - } - - public void onClick(DialogInterface dialog, int which) { - switch (which) { - //用which来选择click后下一步的操作 - case DialogInterface.BUTTON_NEGATIVE: - //这是取消操作 - Intent intent = new Intent(this, NoteEditActivity.class); - //实现两个类间的数据传输 - intent.setAction(Intent.ACTION_VIEW); - //设置动作属性 - intent.putExtra(Intent.EXTRA_UID, mNoteId); - //实现key-value对 - //EXTRA_UID为key；mNoteId为键 - startActivity(intent); - //开始动作 - break; - default: - //这是确定操作 - break; - } - } - - public void onDismiss(DialogInterface dialog) { - //忽略 - stopAlarmSound(); - //停止闹钟声音 - finish(); - //完成该动作 - } - - private void stopAlarmSound() { - if (mPlayer != null) { - mPlayer.stop(); - //停止播放 - mPlayer.release(); - //释放MediaPlayer对象 - mPlayer = null; - } - } -} -``` - -## 2、AlarmInitReceiver.java - -```java -package net.micode.notes.ui; - -import android.app.AlarmManager; -import android.app.PendingIntent; -import android.content.BroadcastReceiver; -import android.content.ContentUris; -import android.content.Context; -import android.content.Intent; -import android.database.Cursor; - -import net.micode.notes.data.Notes; -import net.micode.notes.data.Notes.NoteColumns; - - -public class AlarmInitReceiver extends BroadcastReceiver { - - private static final String [] PROJECTION = new String [] { - NoteColumns.ID, - NoteColumns.ALERTED_DATE - }; - //对数据库的操作，调用标签ID和闹钟时间 - private static final int COLUMN_ID = 0; - private static final int COLUMN_ALERTED_DATE = 1; - - @Override - public void onReceive(Context context, Intent intent) { - long currentDate = System.currentTimeMillis(); - //System.currentTimeMillis()产生一个当前的毫秒 - //这个毫秒其实就是自1970年1月1日0时起的毫秒数 - Cursor c = context.getContentResolver().query(Notes.CONTENT_NOTE_URI, - PROJECTION, - NoteColumns.ALERTED_DATE + ">? AND " + NoteColumns.TYPE + "=" + Notes.TYPE_NOTE, - new String[] { String.valueOf(currentDate) }, - //将long变量currentDate转化为字符串 - null); - //Cursor在这里的作用是通过查找数据库中的标签内容，找到和当前系统时间相等的标签 - - if (c != null) { - if (c.moveToFirst()) { - do { - long alertDate = c.getLong(COLUMN_ALERTED_DATE); - Intent sender = new Intent(context, AlarmReceiver.class); - sender.setData(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, c.getLong(COLUMN_ID))); - PendingIntent pendingIntent = PendingIntent.getBroadcast(context, 0, sender, 0); - AlarmManager alermManager = (AlarmManager) context - .getSystemService(Context.ALARM_SERVICE); - alermManager.set(AlarmManager.RTC_WAKEUP, alertDate, pendingIntent); - } while (c.moveToNext()); - } - c.close(); - } - //然而通过网上查找资料发现，对于闹钟机制的启动，通常需要上面的几个步骤 - //如新建Intent、PendingIntent以及AlarmManager等 - //这里就是根据数据库里的闹钟时间创建一个闹钟机制 - } -} -``` - -## 3、AlarmReceiver.java - -```java -package net.micode.notes.ui; - -import android.content.BroadcastReceiver; -import android.content.Context; -import android.content.Intent; - -public class AlarmReceiver extends BroadcastReceiver { - @Override - public void onReceive(Context context, Intent intent) { - intent.setClass(context, AlarmAlertActivity.class); - //启动AlarmAlertActivity - intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); - //activity要存在于activity的栈中，而非activity的途径启动activity时必然不存在一个activity的栈 - //所以要新起一个栈装入启动的activity - context.startActivity(intent); - } -} -//这是实现alarm这个功能最接近用户层的包，基于上面的两个包， -//作用还需要深究但是对于setClass和addFlags的 - -``` - -## 4、DateTimePicker.java - -```java -package net.micode.notes.ui; - -import java.text.DateFormatSymbols; -import java.util.Calendar; - -import net.micode.notes.R; - - -import android.content.Context; -import android.text.format.DateFormat; -import android.view.View; -import android.widget.FrameLayout; -import android.widget.NumberPicker; - -public class DateTimePicker extends FrameLayout { - //FrameLayout是布局模板之一 - //所有的子元素全部在屏幕的右上方 - private static final boolean DEFAULT_ENABLE_STATE = true; - - private static final int HOURS_IN_HALF_DAY = 12; - private static final int HOURS_IN_ALL_DAY = 24; - private static final int DAYS_IN_ALL_WEEK = 7; - private static final int DATE_SPINNER_MIN_VAL = 0; - private static final int DATE_SPINNER_MAX_VAL = DAYS_IN_ALL_WEEK - 1; - private static final int HOUR_SPINNER_MIN_VAL_24_HOUR_VIEW = 0; - private static final int HOUR_SPINNER_MAX_VAL_24_HOUR_VIEW = 23; - private static final int HOUR_SPINNER_MIN_VAL_12_HOUR_VIEW = 1; - private static final int HOUR_SPINNER_MAX_VAL_12_HOUR_VIEW = 12; - private static final int MINUT_SPINNER_MIN_VAL = 0; - private static final int MINUT_SPINNER_MAX_VAL = 59; - private static final int AMPM_SPINNER_MIN_VAL = 0; - private static final int AMPM_SPINNER_MAX_VAL = 1; - //初始化控件 - private final NumberPicker mDateSpinner; - private final NumberPicker mHourSpinner; - private final NumberPicker mMinuteSpinner; - private final NumberPicker mAmPmSpinner; - //NumberPicker是数字选择器 - //这里定义的四个变量全部是在设置闹钟时需要选择的变量（如日期、时、分、上午或者下午） - private Calendar mDate; - //定义了Calendar类型的变量mDate，用于操作时间 - private String[] mDateDisplayValues = new String[DAYS_IN_ALL_WEEK]; - - private boolean mIsAm; - - private boolean mIs24HourView; - - private boolean mIsEnabled = DEFAULT_ENABLE_STATE; - - private boolean mInitialising; - - private OnDateTimeChangedListener mOnDateTimeChangedListener; - - private NumberPicker.OnValueChangeListener mOnDateChangedListener = new NumberPicker.OnValueChangeListener() { - @Override - public void onValueChange(NumberPicker picker, int oldVal, int newVal) { - mDate.add(Calendar.DAY_OF_YEAR, newVal - oldVal); - updateDateControl(); - onDateTimeChanged(); - } - };//OnValueChangeListener，这是时间改变监听器，这里主要是对日期的监听 - //将现在日期的值传递给mDate；updateDateControl是同步操作 - - private NumberPicker.OnValueChangeListener mOnHourChangedListener = new NumberPicker.OnValueChangeListener() { - //这里是对 小时（Hour） 的监听 - @Override - public void onValueChange(NumberPicker picker, int oldVal, int newVal) { - boolean isDateChanged = false; - Calendar cal = Calendar.getInstance(); - //声明一个Calendar的变量cal，便于后续的操作 - if (!mIs24HourView) { - if (!mIsAm && oldVal == HOURS_IN_HALF_DAY - 1 && newVal == HOURS_IN_HALF_DAY) { - cal.setTimeInMillis(mDate.getTimeInMillis()); - cal.add(Calendar.DAY_OF_YEAR, 1); - isDateChanged = true; - //这里是对于12小时制时，晚上11点和12点交替时对日期的更改 - } else if (mIsAm && oldVal == HOURS_IN_HALF_DAY && newVal == HOURS_IN_HALF_DAY - 1) { - cal.setTimeInMillis(mDate.getTimeInMillis()); - cal.add(Calendar.DAY_OF_YEAR, -1); - isDateChanged = true; - } - //这里是对于12小时制时，凌晨11点和12点交替时对日期的更改 - if (oldVal == HOURS_IN_HALF_DAY - 1 && newVal == HOURS_IN_HALF_DAY || - oldVal == HOURS_IN_HALF_DAY && newVal == HOURS_IN_HALF_DAY - 1) { - mIsAm = !mIsAm; - updateAmPmControl(); - }//这里是对于12小时制时，中午11点和12点交替时对AM和PM的更改 - } else { - if (oldVal == HOURS_IN_ALL_DAY - 1 && newVal == 0) { - cal.setTimeInMillis(mDate.getTimeInMillis()); - cal.add(Calendar.DAY_OF_YEAR, 1); - isDateChanged = true; - //这里是对于24小时制时，晚上11点和12点交替时对日期的更改 - } else if (oldVal == 0 && newVal == HOURS_IN_ALL_DAY - 1) { - cal.setTimeInMillis(mDate.getTimeInMillis()); - cal.add(Calendar.DAY_OF_YEAR, -1); - isDateChanged = true; - } - } //这里是对于12小时制时，凌晨11点和12点交替时对日期的更改 - int newHour = mHourSpinner.getValue() % HOURS_IN_HALF_DAY + (mIsAm ? 0 : HOURS_IN_HALF_DAY); - //通过数字选择器对newHour的赋值 - mDate.set(Calendar.HOUR_OF_DAY, newHour); - //通过set函数将新的Hour值传给mDate - onDateTimeChanged(); - if (isDateChanged) { - setCurrentYear(cal.get(Calendar.YEAR)); - setCurrentMonth(cal.get(Calendar.MONTH)); - setCurrentDay(cal.get(Calendar.DAY_OF_MONTH)); - } - } - }; - - private NumberPicker.OnValueChangeListener mOnMinuteChangedListener = new NumberPicker.OnValueChangeListener() { - @Override - //这里是对 分钟（Minute）改变的监听 - public void onValueChange(NumberPicker picker, int oldVal, int newVal) { - int minValue = mMinuteSpinner.getMinValue(); - int maxValue = mMinuteSpinner.getMaxValue(); - int offset = 0; - //设置offset，作为小时改变的一个记录数据 - if (oldVal == maxValue && newVal == minValue) { - offset += 1; - } else if (oldVal == minValue && newVal == maxValue) { - offset -= 1; - } - //如果原值为59，新值为0，则offset加1 - //如果原值为0，新值为59，则offset减1 - if (offset != 0) { - mDate.add(Calendar.HOUR_OF_DAY, offset); - mHourSpinner.setValue(getCurrentHour()); - updateDateControl(); - int newHour = getCurrentHourOfDay(); - if (newHour >= HOURS_IN_HALF_DAY) { - mIsAm = false; - updateAmPmControl(); - } else { - mIsAm = true; - updateAmPmControl(); - } - } - mDate.set(Calendar.MINUTE, newVal); - onDateTimeChanged(); - } - }; - - private NumberPicker.OnValueChangeListener mOnAmPmChangedListener = new NumberPicker.OnValueChangeListener() { - //对AM和PM的监听 - @Override - public void onValueChange(NumberPicker picker, int oldVal, int newVal) { - mIsAm = !mIsAm; - if (mIsAm) { - mDate.add(Calendar.HOUR_OF_DAY, -HOURS_IN_HALF_DAY); - } else { - mDate.add(Calendar.HOUR_OF_DAY, HOURS_IN_HALF_DAY); - } - updateAmPmControl(); - onDateTimeChanged(); - } - }; - - public interface OnDateTimeChangedListener { - void onDateTimeChanged(DateTimePicker view, int year, int month, - int dayOfMonth, int hourOfDay, int minute); - } - - public DateTimePicker(Context context) { - this(context, System.currentTimeMillis()); - }//通过对数据库的访问，获取当前的系统时间 - - public DateTimePicker(Context context, long date) { - this(context, date, DateFormat.is24HourFormat(context)); - }//上面函数的得到的是一个天文数字（1970至今的秒数），需要DateFormat将其变得有意义 - - public DateTimePicker(Context context, long date, boolean is24HourView) { - super(context); - //获取系统时间 - mDate = Calendar.getInstance(); - mInitialising = true; - mIsAm = getCurrentHourOfDay() >= HOURS_IN_HALF_DAY; - inflate(context, R.layout.datetime_picker, this); - //如果当前Activity里用到别的layout，比如对话框layout - //还要设置这个layout上的其他组件的内容，就必须用inflate()方法先将对话框的layout找出来 - //然后再用findViewById()找到它上面的其它组件 - mDateSpinner = (NumberPicker) findViewById(R.id.date); - mDateSpinner.setMinValue(DATE_SPINNER_MIN_VAL); - mDateSpinner.setMaxValue(DATE_SPINNER_MAX_VAL); - mDateSpinner.setOnValueChangedListener(mOnDateChangedListener); - - mHourSpinner = (NumberPicker) findViewById(R.id.hour); - mHourSpinner.setOnValueChangedListener(mOnHourChangedListener); - mMinuteSpinner = (NumberPicker) findViewById(R.id.minute); - mMinuteSpinner.setMinValue(MINUT_SPINNER_MIN_VAL); - mMinuteSpinner.setMaxValue(MINUT_SPINNER_MAX_VAL); - mMinuteSpinner.setOnLongPressUpdateInterval(100); - mMinuteSpinner.setOnValueChangedListener(mOnMinuteChangedListener); - - String[] stringsForAmPm = new DateFormatSymbols().getAmPmStrings(); - mAmPmSpinner = (NumberPicker) findViewById(R.id.amPm); - mAmPmSpinner.setMinValue(AMPM_SPINNER_MIN_VAL); - mAmPmSpinner.setMaxValue(AMPM_SPINNER_MAX_VAL); - mAmPmSpinner.setDisplayedValues(stringsForAmPm); - mAmPmSpinner.setOnValueChangedListener(mOnAmPmChangedListener); - - // update controls to initial state - updateDateControl(); - updateHourControl(); - updateAmPmControl(); - - set24HourView(is24HourView); - - // set to current time - setCurrentDate(date); - - setEnabled(isEnabled()); - - // set the content descriptions - mInitialising = false; - } - - @Override - public void setEnabled(boolean enabled) { - if (mIsEnabled == enabled) { - return; - } - super.setEnabled(enabled); - mDateSpinner.setEnabled(enabled); - mMinuteSpinner.setEnabled(enabled); - mHourSpinner.setEnabled(enabled); - mAmPmSpinner.setEnabled(enabled); - mIsEnabled = enabled; - } - //存在疑问！！！！！！！！！！！！！setEnabled的作用 - //下面的代码通过原程序的注释已经比较清晰，另外可以通过函数名来判断 - //下面的各函数主要是对上面代码引用到的各函数功能的实现 - @Override - public boolean isEnabled() { - return mIsEnabled; - } - - /** - * Get the current date in millis - * - * @return the current date in millis - */ - public long getCurrentDateInTimeMillis() { - return mDate.getTimeInMillis(); - }//实现函数——得到当前的秒数 - - /** - * Set the current date - * - * @param date The current date in millis - */ - public void setCurrentDate(long date) { - Calendar cal = Calendar.getInstance(); - cal.setTimeInMillis(date); - setCurrentDate(cal.get(Calendar.YEAR), cal.get(Calendar.MONTH), cal.get(Calendar.DAY_OF_MONTH), - cal.get(Calendar.HOUR_OF_DAY), cal.get(Calendar.MINUTE)); - }//实现函数功能——设置当前的时间，参数是date - - /** - * Set the current date - * - * @param year The current year - * @param month The current month - * @param dayOfMonth The current dayOfMonth - * @param hourOfDay The current hourOfDay - * @param minute The current minute - */ - public void setCurrentDate(int year, int month, - int dayOfMonth, int hourOfDay, int minute) { - setCurrentYear(year); - setCurrentMonth(month); - setCurrentDay(dayOfMonth); - setCurrentHour(hourOfDay); - setCurrentMinute(minute); - }//实现函数功能——设置当前的时间，参数是各详细的变量 - - /** - * Get current year - * - * @return The current year - */ - //下面是得到year、month、day等值 - public int getCurrentYear() { - return mDate.get(Calendar.YEAR); - } - - /** - * Set current year - * - * @param year The current year - */ - public void setCurrentYear(int year) { - if (!mInitialising && year == getCurrentYear()) { - return; - } - mDate.set(Calendar.YEAR, year); - updateDateControl(); - onDateTimeChanged(); - } - - /** - * Get current month in the year - * - * @return The current month in the year - */ - public int getCurrentMonth() { - return mDate.get(Calendar.MONTH); - } - - /** - * Set current month in the year - * - * @param month The month in the year - */ - public void setCurrentMonth(int month) { - if (!mInitialising && month == getCurrentMonth()) { - return; - } - mDate.set(Calendar.MONTH, month); - updateDateControl(); - onDateTimeChanged(); - } - - /** - * Get current day of the month - * - * @return The day of the month - */ - public int getCurrentDay() { - return mDate.get(Calendar.DAY_OF_MONTH); - } - - /** - * Set current day of the month - * - * @param dayOfMonth The day of the month - */ - public void setCurrentDay(int dayOfMonth) { - if (!mInitialising && dayOfMonth == getCurrentDay()) { - return; - } - mDate.set(Calendar.DAY_OF_MONTH, dayOfMonth); - updateDateControl(); - onDateTimeChanged(); - } - - /** - * Get current hour in 24 hour mode, in the range (0~23) - * @return The current hour in 24 hour mode - */ - public int getCurrentHourOfDay() { - return mDate.get(Calendar.HOUR_OF_DAY); - } - - private int getCurrentHour() { - if (mIs24HourView){ - return getCurrentHourOfDay(); - } else { - int hour = getCurrentHourOfDay(); - if (hour > HOURS_IN_HALF_DAY) { - return hour - HOURS_IN_HALF_DAY; - } else { - return hour == 0 ? HOURS_IN_HALF_DAY : hour; - } - } - } - - /** - * Set current hour in 24 hour mode, in the range (0~23) - * - * @param hourOfDay - */ - public void setCurrentHour(int hourOfDay) { - if (!mInitialising && hourOfDay == getCurrentHourOfDay()) { - return; - } - mDate.set(Calendar.HOUR_OF_DAY, hourOfDay); - if (!mIs24HourView) { - if (hourOfDay >= HOURS_IN_HALF_DAY) { - mIsAm = false; - if (hourOfDay > HOURS_IN_HALF_DAY) { - hourOfDay -= HOURS_IN_HALF_DAY; - } - } else { - mIsAm = true; - if (hourOfDay == 0) { - hourOfDay = HOURS_IN_HALF_DAY; - } - } - updateAmPmControl(); - } - mHourSpinner.setValue(hourOfDay); - onDateTimeChanged(); - } - - /** - * Get currentMinute - * - * @return The Current Minute - */ - public int getCurrentMinute() { - return mDate.get(Calendar.MINUTE); - } - - /** - * Set current minute - */ - public void setCurrentMinute(int minute) { - if (!mInitialising && minute == getCurrentMinute()) { - return; - } - mMinuteSpinner.setValue(minute); - mDate.set(Calendar.MINUTE, minute); - onDateTimeChanged(); - } - - /** - * @return true if this is in 24 hour view else false. - */ - public boolean is24HourView () { - return mIs24HourView; - } - - /** - * Set whether in 24 hour or AM/PM mode. - * - * @param is24HourView True for 24 hour mode. False for AM/PM mode. - */ - public void set24HourView(boolean is24HourView) { - if (mIs24HourView == is24HourView) { - return; - } - mIs24HourView = is24HourView; - mAmPmSpinner.setVisibility(is24HourView ? View.GONE : View.VISIBLE); - int hour = getCurrentHourOfDay(); - updateHourControl(); - setCurrentHour(hour); - updateAmPmControl(); - } - - private void updateDateControl() { - Calendar cal = Calendar.getInstance(); - cal.setTimeInMillis(mDate.getTimeInMillis()); - cal.add(Calendar.DAY_OF_YEAR, -DAYS_IN_ALL_WEEK / 2 - 1); - mDateSpinner.setDisplayedValues(null); - for (int i = 0; i < DAYS_IN_ALL_WEEK; ++i) { - cal.add(Calendar.DAY_OF_YEAR, 1); - mDateDisplayValues[i] = (String) DateFormat.format("MM.dd EEEE", cal); - } - mDateSpinner.setDisplayedValues(mDateDisplayValues); - mDateSpinner.setValue(DAYS_IN_ALL_WEEK / 2); - mDateSpinner.invalidate(); - }// 对于星期几的算法 - - private void updateAmPmControl() { - if (mIs24HourView) { - mAmPmSpinner.setVisibility(View.GONE); - } else { - int index = mIsAm ? Calendar.AM : Calendar.PM; - mAmPmSpinner.setValue(index); - mAmPmSpinner.setVisibility(View.VISIBLE); - }// 对于上下午操作的算法 - } - - private void updateHourControl() { - if (mIs24HourView) { - mHourSpinner.setMinValue(HOUR_SPINNER_MIN_VAL_24_HOUR_VIEW); - mHourSpinner.setMaxValue(HOUR_SPINNER_MAX_VAL_24_HOUR_VIEW); - } else { - mHourSpinner.setMinValue(HOUR_SPINNER_MIN_VAL_12_HOUR_VIEW); - mHourSpinner.setMaxValue(HOUR_SPINNER_MAX_VAL_12_HOUR_VIEW); - }// 对与小时的算法 - } - - /** - * Set the callback that indicates the 'Set' button has been pressed. - * @param callback the callback, if null will do nothing - */ - public void setOnDateTimeChangedListener(OnDateTimeChangedListener callback) { - mOnDateTimeChangedListener = callback; - } - - private void onDateTimeChanged() { - if (mOnDateTimeChangedListener != null) { - mOnDateTimeChangedListener.onDateTimeChanged(this, getCurrentYear(), - getCurrentMonth(), getCurrentDay(), getCurrentHourOfDay(), getCurrentMinute()); - } - } -} -``` - -## 5、DateTimePickerDialog.java - -```java -package net.micode.notes.ui; - -import java.util.Calendar; - -import net.micode.notes.R; -import net.micode.notes.ui.DateTimePicker; -import net.micode.notes.ui.DateTimePicker.OnDateTimeChangedListener; - -import android.app.AlertDialog; -import android.content.Context; -import android.content.DialogInterface; -import android.content.DialogInterface.OnClickListener; -import android.text.format.DateFormat; -import android.text.format.DateUtils; - -public class DateTimePickerDialog extends AlertDialog implements OnClickListener { - - private Calendar mDate = Calendar.getInstance(); - //创建一个Calendar类型的变量 mDate，方便时间的操作 - private boolean mIs24HourView; - private OnDateTimeSetListener mOnDateTimeSetListener; - //声明一个时间日期滚动选择控件 mOnDateTimeSetListener - private DateTimePicker mDateTimePicker; - //DateTimePicker控件，控件一般用于让用户可以从日期列表中选择单个值。 - //运行时，单击控件边上的下拉箭头，会显示为两个部分：一个下拉列表，一个用于选择日期的 - - public interface OnDateTimeSetListener { - void OnDateTimeSet(AlertDialog dialog, long date); - } - - public DateTimePickerDialog(Context context, long date) { - //对该界面对话框的实例化 - super(context); - //对数据库的操作 - mDateTimePicker = new DateTimePicker(context); - setView(mDateTimePicker); - //添加一个子视图 - mDateTimePicker.setOnDateTimeChangedListener(new OnDateTimeChangedListener() { - public void onDateTimeChanged(DateTimePicker view, int year, int month, - int dayOfMonth, int hourOfDay, int minute) { - mDate.set(Calendar.YEAR, year); - mDate.set(Calendar.MONTH, month); - mDate.set(Calendar.DAY_OF_MONTH, dayOfMonth); - mDate.set(Calendar.HOUR_OF_DAY, hourOfDay); - mDate.set(Calendar.MINUTE, minute); - //将视图中的各选项设置为系统当前时间 - updateTitle(mDate.getTimeInMillis()); - } - }); - mDate.setTimeInMillis(date); - //得到系统时间 - mDate.set(Calendar.SECOND, 0); - //将秒数设置为0 - mDateTimePicker.setCurrentDate(mDate.getTimeInMillis()); - setButton(context.getString(R.string.datetime_dialog_ok), this); - setButton2(context.getString(R.string.datetime_dialog_cancel), (OnClickListener)null); - //设置按钮 - set24HourView(DateFormat.is24HourFormat(this.getContext())); - //时间标准化打印 - updateTitle(mDate.getTimeInMillis()); - } - - public void set24HourView(boolean is24HourView) { - mIs24HourView = is24HourView; - } - - public void setOnDateTimeSetListener(OnDateTimeSetListener callBack) { - mOnDateTimeSetListener = callBack; - }//将时间日期滚动选择控件实例化 - - private void updateTitle(long date) { - int flag = - DateUtils.FORMAT_SHOW_YEAR | - DateUtils.FORMAT_SHOW_DATE | - DateUtils.FORMAT_SHOW_TIME; - flag |= mIs24HourView ? DateUtils.FORMAT_24HOUR : DateUtils.FORMAT_24HOUR; - setTitle(DateUtils.formatDateTime(this.getContext(), date, flag)); - }//android开发中常见日期管理工具类（API）——DateUtils：按照上下午显示时间 - - public void onClick(DialogInterface arg0, int arg1) { - if (mOnDateTimeSetListener != null) { - mOnDateTimeSetListener.OnDateTimeSet(this, mDate.getTimeInMillis()); - } - }//第一个参数arg0是接收到点击事件的对话框 - //第二个参数arg1是该对话框上的按钮 - -} -``` - -## 6、DropdownMenu.java - -```java -package net.micode.notes.ui; - -import android.content.Context; -import android.view.Menu; -import android.view.MenuItem; -import android.view.View; -import android.view.View.OnClickListener; -import android.widget.Button; -import android.widget.PopupMenu; -import android.widget.PopupMenu.OnMenuItemClickListener; - -import net.micode.notes.R; - -public class DropdownMenu { - private Button mButton; - private PopupMenu mPopupMenu; - //声明一个下拉菜单 - private Menu mMenu; - - public DropdownMenu(Context context, Button button, int menuId) { - mButton = button; - mButton.setBackgroundResource(R.drawable.dropdown_icon); - //设置这个view的背景 - mPopupMenu = new PopupMenu(context, mButton); - mMenu = mPopupMenu.getMenu(); - mPopupMenu.getMenuInflater().inflate(menuId, mMenu); - //MenuInflater是用来实例化Menu目录下的Menu布局文件 - //根据ID来确认menu的内容选项 - mButton.setOnClickListener(new OnClickListener() { - public void onClick(View v) { - mPopupMenu.show(); - } - }); - } - - public void setOnDropdownMenuItemClickListener(OnMenuItemClickListener listener) { - if (mPopupMenu != null) { - mPopupMenu.setOnMenuItemClickListener(listener); - }//设置菜单的监听 - } - - public MenuItem findItem(int id) { - return mMenu.findItem(id); - }//对于菜单选项的初始化，根据索引搜索菜单需要的选项 - - public void setTitle(CharSequence title) { - mButton.setText(title); - }//布局文件，设置标题 -} -``` - -## 7、FoldersListAdapter.java - -```java -package net.micode.notes.ui; - -import android.content.Context; -import android.database.Cursor; -import android.view.View; -import android.view.ViewGroup; -import android.widget.CursorAdapter; -import android.widget.LinearLayout; -import android.widget.TextView; - -import net.micode.notes.R; -import net.micode.notes.data.Notes; -import net.micode.notes.data.Notes.NoteColumns; - - -public class FoldersListAdapter extends CursorAdapter { - //CursorAdapter是Cursor和ListView的接口 - //FoldersListAdapter继承了CursorAdapter的类 - //主要作用是便签数据库和用户的交互 - //这里就是用folder（文件夹）的形式展现给用户 - public static final String [] PROJECTION = { - NoteColumns.ID, - NoteColumns.SNIPPET - };//调用数据库中便签的ID和片段 - - public static final int ID_COLUMN = 0; - public static final int NAME_COLUMN = 1; - - public FoldersListAdapter(Context context, Cursor c) { - super(context, c); - // TODO Auto-generated constructor stub - }//数据库操作 - - @Override - public View newView(Context context, Cursor cursor, ViewGroup parent) { - //ViewGroup是容器 - return new FolderListItem(context); - }//创建一个文件夹，对于各文件夹中子标签的初始化 - - @Override - public void bindView(View view, Context context, Cursor cursor) { - if (view instanceof FolderListItem) { - String folderName = (cursor.getLong(ID_COLUMN) == Notes.ID_ROOT_FOLDER) ? context - .getString(R.string.menu_move_parent_folder) : cursor.getString(NAME_COLUMN); - ((FolderListItem) view).bind(folderName); - } - }//将各个布局文件绑定起来 - - public String getFolderName(Context context, int position) { - Cursor cursor = (Cursor) getItem(position); - return (cursor.getLong(ID_COLUMN) == Notes.ID_ROOT_FOLDER) ? context - .getString(R.string.menu_move_parent_folder) : cursor.getString(NAME_COLUMN); - }//根据数据库中标签的ID得到标签的各项内容 - - private class FolderListItem extends LinearLayout { - private TextView mName; - - public FolderListItem(Context context) { - super(context); - //操作数据库 - inflate(context, R.layout.folder_list_item, this); - //根据布局文件的名字等信息将其找出来 - mName = (TextView) findViewById(R.id.tv_folder_name); - } - - public void bind(String name) { - mName.setText(name); - } - } - -} -``` - -## 8、NoteEditActivity.java - -```java -package net.micode.notes.ui; - -import android.app.Activity; -import android.app.AlarmManager; -import android.app.AlertDialog; -import android.app.PendingIntent; -import android.app.SearchManager; -import android.appwidget.AppWidgetManager; -import android.content.ContentUris; -import android.content.Context; -import android.content.DialogInterface; -import android.content.Intent; -import android.content.SharedPreferences; -import android.graphics.Paint; -import android.os.Bundle; -import android.preference.PreferenceManager; -import android.text.Spannable; -import android.text.SpannableString; -import android.text.TextUtils; -import android.text.format.DateUtils; -import android.text.style.BackgroundColorSpan; -import android.util.Log; -import android.view.LayoutInflater; -import android.view.Menu; -import android.view.MenuItem; -import android.view.MotionEvent; -import android.view.View; -import android.view.View.OnClickListener; -import android.view.WindowManager; -import android.widget.CheckBox; -import android.widget.CompoundButton; -import android.widget.CompoundButton.OnCheckedChangeListener; -import android.widget.EditText; -import android.widget.ImageView; -import android.widget.LinearLayout; -import android.widget.TextView; -import android.widget.Toast; - -import net.micode.notes.R; -import net.micode.notes.data.Notes; -import net.micode.notes.data.Notes.TextNote; -import net.micode.notes.model.WorkingNote; -import net.micode.notes.model.WorkingNote.NoteSettingChangedListener; -import net.micode.notes.tool.DataUtils; -import net.micode.notes.tool.ResourceParser; -import net.micode.notes.tool.ResourceParser.TextAppearanceResources; -import net.micode.notes.ui.DateTimePickerDialog.OnDateTimeSetListener; -import net.micode.notes.ui.NoteEditText.OnTextViewChangeListener; -import net.micode.notes.widget.NoteWidgetProvider_2x; -import net.micode.notes.widget.NoteWidgetProvider_4x; - -import java.util.HashMap; -import java.util.HashSet; -import java.util.Map; -import java.util.regex.Matcher; -import java.util.regex.Pattern; - - -public class NoteEditActivity extends Activity implements OnClickListener, - NoteSettingChangedListener, OnTextViewChangeListener { - //该类主要是针对标签的编辑 - //继承了系统内部许多和监听有关的类 - private class HeadViewHolder { - public TextView tvModified; - - public ImageView ivAlertIcon; - - public TextView tvAlertDate; - - public ImageView ibSetBgColor; - } - //使用Map实现数据存储 - private static final Map sBgSelectorBtnsMap = new HashMap(); - static { - sBgSelectorBtnsMap.put(R.id.iv_bg_yellow, ResourceParser.YELLOW); - sBgSelectorBtnsMap.put(R.id.iv_bg_red, ResourceParser.RED); - sBgSelectorBtnsMap.put(R.id.iv_bg_blue, ResourceParser.BLUE); - sBgSelectorBtnsMap.put(R.id.iv_bg_green, ResourceParser.GREEN); - sBgSelectorBtnsMap.put(R.id.iv_bg_white, ResourceParser.WHITE); - //put函数是将指定值和指定键相连 - } - - private static final Map sBgSelectorSelectionMap = new HashMap(); - static { - sBgSelectorSelectionMap.put(ResourceParser.YELLOW, R.id.iv_bg_yellow_select); - sBgSelectorSelectionMap.put(ResourceParser.RED, R.id.iv_bg_red_select); - sBgSelectorSelectionMap.put(ResourceParser.BLUE, R.id.iv_bg_blue_select); - sBgSelectorSelectionMap.put(ResourceParser.GREEN, R.id.iv_bg_green_select); - sBgSelectorSelectionMap.put(ResourceParser.WHITE, R.id.iv_bg_white_select); - //put函数是将指定值和指定键相连 - } - - private static final Map sFontSizeBtnsMap = new HashMap(); - static { - sFontSizeBtnsMap.put(R.id.ll_font_large, ResourceParser.TEXT_LARGE); - sFontSizeBtnsMap.put(R.id.ll_font_small, ResourceParser.TEXT_SMALL); - sFontSizeBtnsMap.put(R.id.ll_font_normal, ResourceParser.TEXT_MEDIUM); - sFontSizeBtnsMap.put(R.id.ll_font_super, ResourceParser.TEXT_SUPER); - //put函数是将指定值和指定键相连 - } - - private static final Map sFontSelectorSelectionMap = new HashMap(); - static { - sFontSelectorSelectionMap.put(ResourceParser.TEXT_LARGE, R.id.iv_large_select); - sFontSelectorSelectionMap.put(ResourceParser.TEXT_SMALL, R.id.iv_small_select); - sFontSelectorSelectionMap.put(ResourceParser.TEXT_MEDIUM, R.id.iv_medium_select); - sFontSelectorSelectionMap.put(ResourceParser.TEXT_SUPER, R.id.iv_super_select); - //put函数是将指定值和指定键相连 - } - - private static final String TAG = "NoteEditActivity"; - - private HeadViewHolder mNoteHeaderHolder; - - private View mHeadViewPanel; - //私有化一个界面操作mHeadViewPanel，对表头的操作 - private View mNoteBgColorSelector; - //私有化一个界面操作mNoteBgColorSelector，对背景颜色的操作 - private View mFontSizeSelector; - //私有化一个界面操作mFontSizeSelector，对标签字体的操作 - private EditText mNoteEditor; - //声明编辑控件，对文本操作 - private View mNoteEditorPanel; - //私有化一个界面操作mNoteEditorPanel，文本编辑的控制板 - //private WorkingNote mWorkingNote; - public WorkingNote mWorkingNote; - //对模板WorkingNote的初始化 - private SharedPreferences mSharedPrefs; - //私有化SharedPreferences的数据存储方式 - //它的本质是基于XML文件存储key-value键值对数据 - private int mFontSizeId; - //用于操作字体的大小 - private static final String PREFERENCE_FONT_SIZE = "pref_font_size"; - - private static final int SHORTCUT_ICON_TITLE_MAX_LEN = 10; - - public static final String TAG_CHECKED = String.valueOf('\u221A'); - public static final String TAG_UNCHECKED = String.valueOf('\u25A1'); - - private LinearLayout mEditTextList; - //线性布局 - private String mUserQuery; - private Pattern mPattern; - - @Override - protected void onCreate(Bundle savedInstanceState) { - super.onCreate(savedInstanceState); - this.setContentView(R.layout.note_edit); - //对数据库的访问操作 - if (savedInstanceState == null && !initActivityState(getIntent())) { - finish(); - return; - } - initResources(); - } - - /** - * Current activity may be killed when the memory is low. Once it is killed, for another time - * user load this activity, we should restore the former state - */ - @Override - protected void onRestoreInstanceState(Bundle savedInstanceState) { - super.onRestoreInstanceState(savedInstanceState); - if (savedInstanceState != null && savedInstanceState.containsKey(Intent.EXTRA_UID)) { - Intent intent = new Intent(Intent.ACTION_VIEW); - intent.putExtra(Intent.EXTRA_UID, savedInstanceState.getLong(Intent.EXTRA_UID)); - if (!initActivityState(intent)) { - finish(); - return; - } - Log.d(TAG, "Restoring from killed activity"); - }//为防止内存不足时程序的终止，在这里有一个保存现场的函数 - } - - private boolean initActivityState(Intent intent) { - /** - * If the user specified the {@link Intent#ACTION_VIEW} but not provided with id, - * then jump to the NotesListActivity - */ - mWorkingNote = null; - if (TextUtils.equals(Intent.ACTION_VIEW, intent.getAction())) { - long noteId = intent.getLongExtra(Intent.EXTRA_UID, 0); - mUserQuery = ""; - //如果用户实例化标签时，系统并未给出标签ID - /** - * Starting from the searched result - */ - //根据键值查找ID - if (intent.hasExtra(SearchManager.EXTRA_DATA_KEY)) { - noteId = Long.parseLong(intent.getStringExtra(SearchManager.EXTRA_DATA_KEY)); - mUserQuery = intent.getStringExtra(SearchManager.USER_QUERY); - } - //如果ID在数据库中未找到 - if (!DataUtils.visibleInNoteDatabase(getContentResolver(), noteId, Notes.TYPE_NOTE)) { - Intent jump = new Intent(this, NotesListActivity.class); - startActivity(jump); - //程序将跳转到上面声明的intent——jump - showToast(R.string.error_note_not_exist); - finish(); - return false; - } - //ID在数据库中找到 - else { - mWorkingNote = WorkingNote.load(this, noteId); - if (mWorkingNote == null) { - Log.e(TAG, "load note failed with note id" + noteId); - //打印出红色的错误信息 - finish(); - return false; - } - } - //setSoftInputMode——软键盘输入模式 - getWindow().setSoftInputMode( - WindowManager.LayoutParams.SOFT_INPUT_STATE_HIDDEN - | WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE); - } else if(TextUtils.equals(Intent.ACTION_INSERT_OR_EDIT, intent.getAction())) { - // intent.getAction() - // 大多用于broadcast发送广播时给机制（intent）设置一个action，就是一个字符串 - // 用户可以通过receive（接受）intent，通过 getAction得到的字符串，来决定做什么 - long folderId = intent.getLongExtra(Notes.INTENT_EXTRA_FOLDER_ID, 0); - int widgetId = intent.getIntExtra(Notes.INTENT_EXTRA_WIDGET_ID, - AppWidgetManager.INVALID_APPWIDGET_ID); - int widgetType = intent.getIntExtra(Notes.INTENT_EXTRA_WIDGET_TYPE, - Notes.TYPE_WIDGET_INVALIDE); - int bgResId = intent.getIntExtra(Notes.INTENT_EXTRA_BACKGROUND_ID, - ResourceParser.getDefaultBgId(this)); - // intent.getInt（Long、String）Extra是对各变量的语法分析 - // Parse call-record note - String phoneNumber = intent.getStringExtra(Intent.EXTRA_PHONE_NUMBER); - long callDate = intent.getLongExtra(Notes.INTENT_EXTRA_CALL_DATE, 0); - if (callDate != 0 && phoneNumber != null) { - if (TextUtils.isEmpty(phoneNumber)) { - Log.w(TAG, "The call record number is null"); - } - long noteId = 0; - if ((noteId = DataUtils.getNoteIdByPhoneNumberAndCallDate(getContentResolver(), - phoneNumber, callDate)) > 0) { - mWorkingNote = WorkingNote.load(this, noteId); - if (mWorkingNote == null) { - Log.e(TAG, "load call note failed with note id" + noteId); - finish(); - return false; - } - //将电话号码与手机的号码簿相关 - } else { - mWorkingNote = WorkingNote.createEmptyNote(this, folderId, widgetId, - widgetType, bgResId); - mWorkingNote.convertToCallNote(phoneNumber, callDate); - // - } - } else { - mWorkingNote = WorkingNote.createEmptyNote(this, folderId, widgetId, widgetType, - bgResId); - }//创建一个新的WorkingNote - - getWindow().setSoftInputMode( - WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE - | WindowManager.LayoutParams.SOFT_INPUT_STATE_VISIBLE); - } else { - Log.e(TAG, "Intent not specified action, should not support"); - finish(); - return false; - } - mWorkingNote.setOnSettingStatusChangedListener(this); - return true; - } - - @Override - protected void onResume() { - super.onResume(); - initNoteScreen(); - } - - private void initNoteScreen() { - //对界面的初始化操作 - mNoteEditor.setTextAppearance(this, TextAppearanceResources - .getTexAppearanceResource(mFontSizeId)); - //设置外观 - if (mWorkingNote.getCheckListMode() == TextNote.MODE_CHECK_LIST) { - switchToListMode(mWorkingNote.getContent()); - } else { - mNoteEditor.setText(getHighlightQueryResult(mWorkingNote.getContent(), mUserQuery)); - mNoteEditor.setSelection(mNoteEditor.getText().length()); - } - for (Integer id : sBgSelectorSelectionMap.keySet()) { - findViewById(sBgSelectorSelectionMap.get(id)).setVisibility(View.GONE); - } - mHeadViewPanel.setBackgroundResource(mWorkingNote.getTitleBgResId()); - mNoteEditorPanel.setBackgroundResource(mWorkingNote.getBgColorResId()); - - mNoteHeaderHolder.tvModified.setText(DateUtils.formatDateTime(this, - mWorkingNote.getModifiedDate(), DateUtils.FORMAT_SHOW_DATE - | DateUtils.FORMAT_NUMERIC_DATE | DateUtils.FORMAT_SHOW_TIME - | DateUtils.FORMAT_SHOW_YEAR)); - - /** - * TODO: Add the menu for setting alert. Currently disable it because the DateTimePicker - * is not ready - */ - showAlertHeader(); - } - //设置闹钟的显示 - private void showAlertHeader() { - if (mWorkingNote.hasClockAlert()) { - long time = System.currentTimeMillis(); - if (time > mWorkingNote.getAlertDate()) { - mNoteHeaderHolder.tvAlertDate.setText(R.string.note_alert_expired); - } - //如果系统时间大于了闹钟设置的时间，那么闹钟失效 - else { - mNoteHeaderHolder.tvAlertDate.setText(DateUtils.getRelativeTimeSpanString( - mWorkingNote.getAlertDate(), time, DateUtils.MINUTE_IN_MILLIS)); - } - mNoteHeaderHolder.tvAlertDate.setVisibility(View.VISIBLE); - mNoteHeaderHolder.ivAlertIcon.setVisibility(View.VISIBLE); - //显示闹钟开启的图标 - } else { - mNoteHeaderHolder.tvAlertDate.setVisibility(View.GONE); - mNoteHeaderHolder.ivAlertIcon.setVisibility(View.GONE); - }; - } - - @Override - protected void onNewIntent(Intent intent) { - super.onNewIntent(intent); - initActivityState(intent); - } - - @Override - protected void onSaveInstanceState(Bundle outState) { - super.onSaveInstanceState(outState); - /** - * For new note without note id, we should firstly save it to - * generate a id. If the editing note is not worth saving, there - * is no id which is equivalent to create new note - */ - if (!mWorkingNote.existInDatabase()) { - saveNote(); - } - //在创建一个新的标签时，先在数据库中匹配 - //如果不存在，那么先在数据库中存储 - outState.putLong(Intent.EXTRA_UID, mWorkingNote.getNoteId()); - Log.d(TAG, "Save working note id: " + mWorkingNote.getNoteId() + " onSaveInstanceState"); - } - - @Override - //MotionEvent是对屏幕触控的传递机制 - public boolean dispatchTouchEvent(MotionEvent ev) { - if (mNoteBgColorSelector.getVisibility() == View.VISIBLE - && !inRangeOfView(mNoteBgColorSelector, ev)) { - mNoteBgColorSelector.setVisibility(View.GONE); - return true; - }//颜色选择器在屏幕上可见 - - if (mFontSizeSelector.getVisibility() == View.VISIBLE - && !inRangeOfView(mFontSizeSelector, ev)) { - mFontSizeSelector.setVisibility(View.GONE); - return true; - }//字体大小选择器在屏幕上可见 - return super.dispatchTouchEvent(ev); - } - //对屏幕触控的坐标进行操作 - private boolean inRangeOfView(View view, MotionEvent ev) { - int []location = new int[2]; - view.getLocationOnScreen(location); - int x = location[0]; - int y = location[1]; - if (ev.getX() < x - || ev.getX() > (x + view.getWidth()) - || ev.getY() < y - || ev.getY() > (y + view.getHeight())) - //如果触控的位置超出了给定的范围，返回false - { - return false; - } - return true; - } - - private void initResources() { - mHeadViewPanel = findViewById(R.id.note_title); - mNoteHeaderHolder = new HeadViewHolder(); - mNoteHeaderHolder.tvModified = (TextView) findViewById(R.id.tv_modified_date); - mNoteHeaderHolder.ivAlertIcon = (ImageView) findViewById(R.id.iv_alert_icon); - mNoteHeaderHolder.tvAlertDate = (TextView) findViewById(R.id.tv_alert_date); - mNoteHeaderHolder.ibSetBgColor = (ImageView) findViewById(R.id.btn_set_bg_color); - mNoteHeaderHolder.ibSetBgColor.setOnClickListener(this); - mNoteEditor = (EditText) findViewById(R.id.note_edit_view); - mNoteEditorPanel = findViewById(R.id.sv_note_edit); - mNoteBgColorSelector = findViewById(R.id.note_bg_color_selector); - for (int id : sBgSelectorBtnsMap.keySet()) { - ImageView iv = (ImageView) findViewById(id); - iv.setOnClickListener(this); - }//对标签各项属性内容的初始化 - - mFontSizeSelector = findViewById(R.id.font_size_selector); - for (int id : sFontSizeBtnsMap.keySet()) { - View view = findViewById(id); - view.setOnClickListener(this); - };//对字体大小的选择 - mSharedPrefs = PreferenceManager.getDefaultSharedPreferences(this); - mFontSizeId = mSharedPrefs.getInt(PREFERENCE_FONT_SIZE, ResourceParser.BG_DEFAULT_FONT_SIZE); - /** - * HACKME: Fix bug of store the resource id in shared preference. - * The id may larger than the length of resources, in this case, - * return the {@link ResourceParser#BG_DEFAULT_FONT_SIZE} - */ - if(mFontSizeId >= TextAppearanceResources.getResourcesSize()) { - mFontSizeId = ResourceParser.BG_DEFAULT_FONT_SIZE; - } - mEditTextList = (LinearLayout) findViewById(R.id.note_edit_list); - } - - @Override - protected void onPause() { - super.onPause(); - if(saveNote()) { - Log.d(TAG, "Note data was saved with length:" + mWorkingNote.getContent().length()); - } - clearSettingState(); - } - //和桌面小工具的同步 - private void updateWidget() { - Intent intent = new Intent(AppWidgetManager.ACTION_APPWIDGET_UPDATE); - if (mWorkingNote.getWidgetType() == Notes.TYPE_WIDGET_2X) { - intent.setClass(this, NoteWidgetProvider_2x.class); - } else if (mWorkingNote.getWidgetType() == Notes.TYPE_WIDGET_4X) { - intent.setClass(this, NoteWidgetProvider_4x.class); - } else { - Log.e(TAG, "Unspported widget type"); - return; - } - - intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS, new int[] { - mWorkingNote.getWidgetId() - }); - - sendBroadcast(intent); - setResult(RESULT_OK, intent); - } - - public void onClick(View v) { - int id = v.getId(); - if (id == R.id.btn_set_bg_color) { - mNoteBgColorSelector.setVisibility(View.VISIBLE); - findViewById(sBgSelectorSelectionMap.get(mWorkingNote.getBgColorId())).setVisibility( - - View.VISIBLE); - } else if (sBgSelectorBtnsMap.containsKey(id)) { - findViewById(sBgSelectorSelectionMap.get(mWorkingNote.getBgColorId())).setVisibility( - View.GONE); - mWorkingNote.setBgColorId(sBgSelectorBtnsMap.get(id)); - mNoteBgColorSelector.setVisibility(View.GONE); - } else if (sFontSizeBtnsMap.containsKey(id)) { - findViewById(sFontSelectorSelectionMap.get(mFontSizeId)).setVisibility(View.GONE); - mFontSizeId = sFontSizeBtnsMap.get(id); - mSharedPrefs.edit().putInt(PREFERENCE_FONT_SIZE, mFontSizeId).commit(); - findViewById(sFontSelectorSelectionMap.get(mFontSizeId)).setVisibility(View.VISIBLE); - if (mWorkingNote.getCheckListMode() == TextNote.MODE_CHECK_LIST) { - getWorkingText(); - switchToListMode(mWorkingNote.getContent()); - } else { - mNoteEditor.setTextAppearance(this, - TextAppearanceResources.getTexAppearanceResource(mFontSizeId)); - } - mFontSizeSelector.setVisibility(View.GONE); - } - }//************************存在问题 - - @Override - public void onBackPressed() { - if(clearSettingState()) { - return; - } - - saveNote(); - super.onBackPressed(); - } - - private boolean clearSettingState() { - if (mNoteBgColorSelector.getVisibility() == View.VISIBLE) { - mNoteBgColorSelector.setVisibility(View.GONE); - return true; - } else if (mFontSizeSelector.getVisibility() == View.VISIBLE) { - mFontSizeSelector.setVisibility(View.GONE); - return true; - } - return false; - } - - public void onBackgroundColorChanged() { - findViewById(sBgSelectorSelectionMap.get(mWorkingNote.getBgColorId())).setVisibility( - View.VISIBLE); - mNoteEditorPanel.setBackgroundResource(mWorkingNote.getBgColorResId()); - mHeadViewPanel.setBackgroundResource(mWorkingNote.getTitleBgResId()); - } - - @Override - //对选择菜单的准备 - public boolean onPrepareOptionsMenu(Menu menu) { - if (isFinishing()) { - return true; - } - clearSettingState(); - menu.clear(); - if (mWorkingNote.getFolderId() == Notes.ID_CALL_RECORD_FOLDER) { - getMenuInflater().inflate(R.menu.call_note_edit, menu); - // MenuInflater是用来实例化Menu目录下的Menu布局文件的 - } else { - getMenuInflater().inflate(R.menu.note_edit, menu); - } - if (mWorkingNote.getCheckListMode() == TextNote.MODE_CHECK_LIST) { - menu.findItem(R.id.menu_list_mode).setTitle(R.string.menu_normal_mode); - } else { - menu.findItem(R.id.menu_list_mode).setTitle(R.string.menu_list_mode); - } - if (mWorkingNote.hasClockAlert()) { - menu.findItem(R.id.menu_alert).setVisible(false); - } else { - menu.findItem(R.id.menu_delete_remind).setVisible(false); - } - return true; - } - - @Override - /* - * 函数功能：动态改变菜单选项内容 - * 函数实现：如下注释 - */ - public boolean onOptionsItemSelected(MenuItem item) { - switch (item.getItemId()) { - //根据菜单的id来编剧相关项目 - case R.id.menu_new_note: - //创建一个新的便签 - createNewNote(); - break; - case R.id.menu_delete: - //删除便签 - AlertDialog.Builder builder = new AlertDialog.Builder(this); - //创建关于删除操作的对话框 - builder.setTitle(getString(R.string.alert_title_delete)); - // 设置标签的标题为alert_title_delete - builder.setIcon(android.R.drawable.ic_dialog_alert); - //设置对话框图标 - builder.setMessage(getString(R.string.alert_message_delete_note)); - //设置对话框内容 - builder.setPositiveButton(android.R.string.ok, - new DialogInterface.OnClickListener() { - //建立按键监听器 - public void onClick(DialogInterface dialog, int which) { - //点击所触发事件 - deleteCurrentNote(); - // 删除单签便签 - finish(); - } - }); - //添加“YES”按钮 - builder.setNegativeButton(android.R.string.cancel, null); - //添加“NO”的按钮 - builder.show(); - //显示对话框 - break; - case R.id.menu_font_size: - //字体大小的编辑 - mFontSizeSelector.setVisibility(View.VISIBLE); - // 将字体选择器置为可见 - findViewById(sFontSelectorSelectionMap.get(mFontSizeId)).setVisibility(View.VISIBLE); - // 通过id找到相应的大小 - break; - case R.id.menu_list_mode: - //选择列表模式 - mWorkingNote.setCheckListMode(mWorkingNote.getCheckListMode() == 0 ? - TextNote.MODE_CHECK_LIST : 0); - break; - case R.id.menu_share: - //菜单共享 - getWorkingText(); - sendTo(this, mWorkingNote.getContent()); - // 用sendto函数将运行文本发送到遍历的本文内 - break; - case R.id.menu_send_to_desktop: - //发送到桌面 - sendToDesktop(); - break; - case R.id.menu_alert: - //创建提醒器 - setReminder(); - break; - case R.id.menu_delete_remind: - //删除日期提醒 - mWorkingNote.setAlertDate(0, false); - break; - default: - break; - } - return true; - } - - /* - * 函数功能：建立事件提醒器 - * 函数实现：如下注释 - */ - private void setReminder() { - DateTimePickerDialog d = new DateTimePickerDialog(this, System.currentTimeMillis()); - // 建立修改时间日期的对话框 - d.setOnDateTimeSetListener(new OnDateTimeSetListener() { - public void OnDateTimeSet(AlertDialog dialog, long date) { - mWorkingNote.setAlertDate(date , true); - //选择提醒的日期 - } - }); - //建立时间日期的监听器 - d.show(); - //显示对话框 - } - - /** - * Share note to apps that support {@link Intent#ACTION_SEND} action - * and {@text/plain} type - */ - /* - * 函数功能：共享便签 - * 函数实现：如下注释 - */ - private void sendTo(Context context, String info) { - Intent intent = new Intent(Intent.ACTION_SEND); - //建立intent链接选项 - intent.putExtra(Intent.EXTRA_TEXT, info); - //将需要传递的便签信息放入text文件中 - intent.setType("text/plain"); - //编辑连接器的类型 - context.startActivity(intent); - //在acti中进行链接 - } - - /* - * 函数功能：创建一个新的便签 - * 函数实现：如下注释 - */ - private void createNewNote() { - // Firstly, save current editing notes - //保存当前便签 - saveNote(); - - // For safety, start a new NoteEditActivity - finish(); - Intent intent = new Intent(this, NoteEditActivity.class); - //设置链接器 - intent.setAction(Intent.ACTION_INSERT_OR_EDIT); - //该活动定义为创建或编辑 - intent.putExtra(Notes.INTENT_EXTRA_FOLDER_ID, mWorkingNote.getFolderId()); - //将运行便签的id添加到INTENT_EXTRA_FOLDER_ID标记中 - startActivity(intent); - //开始activity并链接 - } - - /* - * 函数功能：删除当前便签 - * 函数实现：如下注释 - */ - private void deleteCurrentNote() { - if (mWorkingNote.existInDatabase()) { - //假如当前运行的便签内存有数据 - HashSet ids = new HashSet(); - long id = mWorkingNote.getNoteId(); - if (id != Notes.ID_ROOT_FOLDER) { - ids.add(id); - //如果不是头文件夹建立一个hash表把便签id存起来 - } else { - Log.d(TAG, "Wrong note id, should not happen"); - //否则报错 - } - if (!isSyncMode()) { - //在非同步模式情况下 - //删除操作 - if (!DataUtils.batchDeleteNotes(getContentResolver(), ids)) { - Log.e(TAG, "Delete Note error"); - } - } else { - //同步模式 - //移动至垃圾文件夹的操作 - if (!DataUtils.batchMoveToFolder(getContentResolver(), ids, Notes.ID_TRASH_FOLER)) { - Log.e(TAG, "Move notes to trash folder error, should not happens"); - } - } - } - mWorkingNote.markDeleted(true); - //将这些标签的删除标记置为true - } - - /* - * 函数功能：判断是否为同步模式 - * 函数实现：直接看NotesPreferenceActivity中同步名称是否为空 - */ - private boolean isSyncMode() { - return NotesPreferenceActivity.getSyncAccountName(this).trim().length() > 0; - } - - /* - * 函数功能：设置提醒时间 - * 函数实现：如下注释 - */ - public void onClockAlertChanged(long date, boolean set) { - /** - * User could set clock to an unsaved note, so before setting the - * alert clock, we should save the note first - */ - if (!mWorkingNote.existInDatabase()) { - //首先保存已有的便签 - saveNote(); - } - if (mWorkingNote.getNoteId() > 0) { - Intent intent = new Intent(this, AlarmReceiver.class); - intent.setData(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, mWorkingNote.getNoteId())); - //若有有运行的便签就是建立一个链接器将标签id都存在uri中 - PendingIntent pendingIntent = PendingIntent.getBroadcast(this, 0, intent, 0); - AlarmManager alarmManager = ((AlarmManager) getSystemService(ALARM_SERVICE)); - //设置提醒管理器 - showAlertHeader(); - if(!set) { - alarmManager.cancel(pendingIntent); - } else { - alarmManager.set(AlarmManager.RTC_WAKEUP, date, pendingIntent); - } - //如果用户设置了时间，就通过提醒管理器设置一个监听事项 - } else { - /** - * There is the condition that user has input nothing (the note is - * not worthy saving), we have no note id, remind the user that he - * should input something - */ - //没有运行的便签就报错 - Log.e(TAG, "Clock alert setting error"); - showToast(R.string.error_note_empty_for_clock); - } - } - - /* - * 函数功能：Widget发生改变的所触发的事件 - */ - public void onWidgetChanged() { - updateWidget();//更新Widget - } - - /* - * 函数功能： 删除编辑文本框所触发的事件 - * 函数实现：如下注释 - */ - public void onEditTextDelete(int index, String text) { - int childCount = mEditTextList.getChildCount(); - if (childCount == 1) { - return; - } - //没有编辑框的话直接返回 - for (int i = index + 1; i < childCount; i++) { - ((NoteEditText) mEditTextList.getChildAt(i).findViewById(R.id.et_edit_text)) - .setIndex(i - 1); - //通过id把编辑框存在便签编辑框中 - } - - mEditTextList.removeViewAt(index); - //删除特定位置的视图 - NoteEditText edit = null; - if(index == 0) { - edit = (NoteEditText) mEditTextList.getChildAt(0).findViewById( - R.id.et_edit_text); - } else { - edit = (NoteEditText) mEditTextList.getChildAt(index - 1).findViewById( - R.id.et_edit_text); - } - //通过id把编辑框存在空的NoteEditText中 - int length = edit.length(); - edit.append(text); - edit.requestFocus();//请求优先完成该此 编辑 - edit.setSelection(length);//定位到length位置处的条目 - } - - /* - * 函数功能：进入编辑文本框所触发的事件 - * 函数实现：如下注释 - */ - public void onEditTextEnter(int index, String text) { - /** - * Should not happen, check for debug - */ - if(index > mEditTextList.getChildCount()) { - Log.e(TAG, "Index out of mEditTextList boundrary, should not happen"); - //越界把偶偶 - } - - View view = getListItem(text, index); - mEditTextList.addView(view, index); - //建立一个新的视图并添加到编辑文本框内 - NoteEditText edit = (NoteEditText) view.findViewById(R.id.et_edit_text); - edit.requestFocus();//请求优先操作 - edit.setSelection(0);//定位到起始位置 - for (int i = index + 1; i < mEditTextList.getChildCount(); i++) { - ((NoteEditText) mEditTextList.getChildAt(i).findViewById(R.id.et_edit_text)) - .setIndex(i); - //遍历子文本框并设置对应对下标 - } - } - - /* - * 函数功能：切换至列表模式 - * 函数实现：如下注释 - */ - private void switchToListMode(String text) { - mEditTextList.removeAllViews(); - String[] items = text.split("\n"); - int index = 0; - //清空所有视图，初始化下标 - for (String item : items) { - if(!TextUtils.isEmpty(item)) { - mEditTextList.addView(getListItem(item, index)); - index++; - //遍历所有文本单元并添加到文本框中 - } - } - mEditTextList.addView(getListItem("", index)); - mEditTextList.getChildAt(index).findViewById(R.id.et_edit_text).requestFocus(); - //优先请求此操作 - - mNoteEditor.setVisibility(View.GONE); - //便签编辑器不可见 - mEditTextList.setVisibility(View.VISIBLE); - //将文本编辑框置为可见 - } - - /* - * 函数功能：获取高亮效果的反馈情况 - * 函数实现：如下注释 - */ - private Spannable getHighlightQueryResult(String fullText, String userQuery) { - SpannableString spannable = new SpannableString(fullText == null ? "" : fullText); - //新建一个效果选项 - if (!TextUtils.isEmpty(userQuery)) { - mPattern = Pattern.compile(userQuery); - //将用户的询问进行解析 - Matcher m = mPattern.matcher(fullText); - //建立一个状态机检查Pattern并进行匹配 - int start = 0; - while (m.find(start)) { - spannable.setSpan( - new BackgroundColorSpan(this.getResources().getColor( - R.color.user_query_highlight)), m.start(), m.end(), - Spannable.SPAN_INCLUSIVE_EXCLUSIVE); - //设置背景颜色 - start = m.end(); - //跟新起始位置 - } - } - return spannable; - } - - /* - * 函数功能：获取列表项 - * 函数实现：如下注释 - */ - private View getListItem(String item, int index) { - View view = LayoutInflater.from(this).inflate(R.layout.note_edit_list_item, null); - //创建一个视图 - final NoteEditText edit = (NoteEditText) view.findViewById(R.id.et_edit_text); - edit.setTextAppearance(this, TextAppearanceResources.getTexAppearanceResource(mFontSizeId)); - //创建一个文本编辑框并设置可见性 - CheckBox cb = ((CheckBox) view.findViewById(R.id.cb_edit_item)); - cb.setOnCheckedChangeListener(new OnCheckedChangeListener() { - public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) { - if (isChecked) { - edit.setPaintFlags(edit.getPaintFlags() | Paint.STRIKE_THRU_TEXT_FLAG); - } else { - edit.setPaintFlags(Paint.ANTI_ALIAS_FLAG | Paint.DEV_KERN_TEXT_FLAG); - } - } - }); - //建立一个打钩框并设置监听器 - - if (item.startsWith(TAG_CHECKED)) { - //选择勾选 - cb.setChecked(true); - edit.setPaintFlags(edit.getPaintFlags() | Paint.STRIKE_THRU_TEXT_FLAG); - item = item.substring(TAG_CHECKED.length(), item.length()).trim(); - } else if (item.startsWith(TAG_UNCHECKED)) { - //选择不勾选 - cb.setChecked(false); - edit.setPaintFlags(Paint.ANTI_ALIAS_FLAG | Paint.DEV_KERN_TEXT_FLAG); - item = item.substring(TAG_UNCHECKED.length(), item.length()).trim(); - } - - edit.setOnTextViewChangeListener(this); - edit.setIndex(index); - edit.setText(getHighlightQueryResult(item, mUserQuery)); - //运行编辑框的监听器对该行为作出反应，并设置下标及文本内容 - return view; - } - - /* - * 函数功能：便签内容发生改变所 触发的事件 - * 函数实现：如下注释 - */ - public void onTextChange(int index, boolean hasText) { - if (index >= mEditTextList.getChildCount()) { - Log.e(TAG, "Wrong index, should not happen"); - return; - //越界报错 - } - if(hasText) { - mEditTextList.getChildAt(index).findViewById(R.id.cb_edit_item).setVisibility(View.VISIBLE); - } else { - mEditTextList.getChildAt(index).findViewById(R.id.cb_edit_item).setVisibility(View.GONE); - } - //如果内容不为空则将其子编辑框可见性置为可见，否则不可见 - } - - /* - * 函数功能：检查模式和列表模式的切换 - * 函数实现：如下注释 - */ - public void onCheckListModeChanged(int oldMode, int newMode) { - if (newMode == TextNote.MODE_CHECK_LIST) { - switchToListMode(mNoteEditor.getText().toString()); - //检查模式切换到列表模式 - } else { - if (!getWorkingText()) { - mWorkingNote.setWorkingText(mWorkingNote.getContent().replace(TAG_UNCHECKED + " ", - "")); - } - //若是获取到文本就改变其检查标记 - mNoteEditor.setText(getHighlightQueryResult(mWorkingNote.getContent(), mUserQuery)); - mEditTextList.setVisibility(View.GONE); - mNoteEditor.setVisibility(View.VISIBLE); - //修改文本编辑器的内容和可见性 - } - } - - /* - * 函数功能：设置勾选选项表并返回是否勾选的标记 - * 函数实现：如下注释 - */ - private boolean getWorkingText() { - boolean hasChecked = false; - //初始化check标记 - if (mWorkingNote.getCheckListMode() == TextNote.MODE_CHECK_LIST) { - // 若模式为CHECK_LIST - StringBuilder sb = new StringBuilder(); - //创建可变字符串 - for (int i = 0; i < mEditTextList.getChildCount(); i++) { - View view = mEditTextList.getChildAt(i); - //遍历所有子编辑框的视图 - NoteEditText edit = (NoteEditText) view.findViewById(R.id.et_edit_text); - if (!TextUtils.isEmpty(edit.getText())) { - //若文本不为空 - if (((CheckBox) view.findViewById(R.id.cb_edit_item)).isChecked()) { - //该选项框已打钩 - sb.append(TAG_CHECKED).append(" ").append(edit.getText()).append("\n"); - hasChecked = true; - //扩展字符串为已打钩并把标记置true - } else { - sb.append(TAG_UNCHECKED).append(" ").append(edit.getText()).append("\n"); - //扩展字符串添加未打钩 - } - } - } - mWorkingNote.setWorkingText(sb.toString()); - //利用编辑好的字符串设置运行便签的内容 - } else { - mWorkingNote.setWorkingText(mNoteEditor.getText().toString()); - // 若不是该模式直接用编辑器中的内容设置运行中标签的内容 - } - return hasChecked; - } - - /* - * 函数功能：保存便签 - * 函数实现：如下注释 - */ - private boolean saveNote() { - getWorkingText(); - boolean saved = mWorkingNote.saveNote(); - //运行 getWorkingText()之后保存 - if (saved) { - /** - * There are two modes from List view to edit view, open one note, - * create/edit a node. Opening node requires to the original - * position in the list when back from edit view, while creating a - * new node requires to the top of the list. This code - * {@link #RESULT_OK} is used to identify the create/edit state - */ - //如英文注释所说链接RESULT_OK是为了识别保存的2种情况，一是创建后保存，二是修改后保存 - setResult(RESULT_OK); - } - return saved; - } - - /* - * 函数功能：将便签发送至桌面 - * 函数实现：如下注释 - */ - private void sendToDesktop() { - /** - * Before send message to home, we should make sure that current - * editing note is exists in databases. So, for new note, firstly - * save it - */ - if (!mWorkingNote.existInDatabase()) { - saveNote(); - //若不存在数据也就是新的标签就保存起来先 - } - - if (mWorkingNote.getNoteId() > 0) { - //若是有内容 - Intent sender = new Intent(); - Intent shortcutIntent = new Intent(this, NoteEditActivity.class); - //建立发送到桌面的连接器 - shortcutIntent.setAction(Intent.ACTION_VIEW); - //链接为一个视图 - shortcutIntent.putExtra(Intent.EXTRA_UID, mWorkingNote.getNoteId()); - sender.putExtra(Intent.EXTRA_SHORTCUT_INTENT, shortcutIntent); - sender.putExtra(Intent.EXTRA_SHORTCUT_NAME, - makeShortcutIconTitle(mWorkingNote.getContent())); - sender.putExtra(Intent.EXTRA_SHORTCUT_ICON_RESOURCE, - Intent.ShortcutIconResource.fromContext(this, R.drawable.icon_app)); - sender.putExtra("duplicate", true); - //将便签的相关信息都添加到要发送的文件里 - sender.setAction("com.android.launcher.action.INSTALL_SHORTCUT"); - //设置sneder的行为是发送 - showToast(R.string.info_note_enter_desktop); - sendBroadcast(sender); - //显示到桌面 - } else { - /** - * There is the condition that user has input nothing (the note is - * not worthy saving), we have no note id, remind the user that he - * should input something - */ - Log.e(TAG, "Send to desktop error"); - showToast(R.string.error_note_empty_for_send_to_desktop); - //空便签直接报错 - } - } - - /* - * 函数功能：编辑小图标的标题 - * 函数实现：如下注释 - */ - private String makeShortcutIconTitle(String content) { - content = content.replace(TAG_CHECKED, ""); - content = content.replace(TAG_UNCHECKED, ""); - return content.length() > SHORTCUT_ICON_TITLE_MAX_LEN ? content.substring(0, - SHORTCUT_ICON_TITLE_MAX_LEN) : content; - //直接设置为content中的内容并返回，有勾选和未勾选2种 - } - - /* - * 函数功能：显示提示的视图 - * 函数实现：根据下标显示对应的提示 - */ - private void showToast(int resId) { - showToast(resId, Toast.LENGTH_SHORT); - } - - /* - * 函数功能：持续显示提示的视图 - * 函数实现：根据下标和持续的时间（duration）编辑提示视图并显示 - */ - private void showToast(int resId, int duration) { - Toast.makeText(this, resId, duration).show(); - } -} -``` \ No newline at end of file