From 6ef7dc91809e3e292d66098480c5d8668ff0d8f7 Mon Sep 17 00:00:00 2001 From: pom7i43xf <3022186393@qq.com> Date: Sat, 29 Jun 2024 19:22:02 +0800 Subject: [PATCH] Update README.md --- README.md | 2201 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 2201 insertions(+) diff --git a/README.md b/README.md index 6034f5f..5d40a65 100644 --- a/README.md +++ b/README.md @@ -1,2 +1,2203 @@ # gitpractice +// Apache许可证协议 +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; + private String mSnippet; + private static final int SNIPPET_PREW_MAX_LEN = 60; + MediaPlayer mPlayer; + + @Override + protected void onCreate(Bundle savedInstanceState) { + super.onCreate(savedInstanceState); + requestWindowFeature(Window.FEATURE_NO_TITLE); + + final Window win = getWindow(); + win.addFlags(WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED); + + if (!isScreenOn()) { + win.addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON + | WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON + | WindowManager.LayoutParams.FLAG_ALLOW_LOCK_WHILE_SCREEN_ON + | WindowManager.LayoutParams.FLAG_LAYOUT_INSET_DECOR); + } +// 在Activity创建时被调用,它首先设置Activity的特性,然后获取传递过来的Intent,从中获取提醒的ID和摘录信息,并根据提醒的ID判断提醒是否可以在Note数据库中找到,并显示对应的提醒对话框和播放提醒声音。 + + Intent intent = getIntent(); + + try { + mNoteId = Long.parseLong(intent.getData().getPathSegments().get(1)); + mSnippet = DataUtils.getSnippetById(this.getContentResolver(), mNoteId); + mSnippet = mSnippet.length() > SNIPPET_PREW_MAX_LEN ? mSnippet.substring(0, + SNIPPET_PREW_MAX_LEN) + getResources().getString(R.string.notelist_string_info) + : mSnippet; + } catch (IllegalArgumentException e) { + e.printStackTrace(); + return; + } + + mPlayer = new MediaPlayer(); + if (DataUtils.visibleInNoteDatabase(getContentResolver(), mNoteId, Notes.TYPE_NOTE)) { + showActionDialog(); + playAlarmSound(); + } else { + finish(); + } + } +// 以一个try-catch块开始,尝试从意图中提取一个笔记ID,使用笔记ID从内容提供程序中检索与该笔记相关的文本片段,并在文本片段太长时截断它。如果在此过程中抛出IllegalArgumentException异常,则捕获该异常并返回方法。 +//接下来的代码块创建一个新的MediaPlayer对象,并检查与笔记ID关联的笔记是否在笔记数据库中可见。如果可见,则调用名为showActionDialog()的方法,该方法可能显示一个对话框给用户。还调用了playAlarmSound()方法,该方法可能会播放警报声。如果笔记在数据库中不可见,则方法仅完成而不显示对话框或播放声音。 + + private boolean isScreenOn() { + PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE); + return pm.isScreenOn(); + } +// 用于判断屏幕是否打开。 + + private void playAlarmSound() { + Uri url = RingtoneManager.getActualDefaultRingtoneUri(this, RingtoneManager.TYPE_ALARM); + + 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); + mPlayer.prepare(); + mPlayer.setLooping(true); + mPlayer.start(); + } catch (IllegalArgumentException | SecurityException | IllegalStateException | + IOException e) { + e.printStackTrace(); + } + } +// 用于播放提醒声音,首先获取系统默认的闹铃铃声,然后判断当前是否为静音模式,如果是,则设置MediaPlayer的音频流类型为系统当前可影响铃声的流,否则设置为闹钟流类型。最后设置铃声数据源、循环播放并开始播放。 + + private void showActionDialog() { + AlertDialog.Builder dialog = new AlertDialog.Builder(this); + dialog.setTitle(R.string.app_name); + dialog.setMessage(mSnippet); + dialog.setPositiveButton(R.string.notealert_ok, this); + if (isScreenOn()) { + dialog.setNegativeButton(R.string.notealert_enter, this); + } + dialog.show().setOnDismissListener(this); + } +// 用于显示提醒对话框,其中包含提醒的摘录信息和两个按钮(确认和进入)。 + + public void onClick(DialogInterface dialog, int which) { + if (which == DialogInterface.BUTTON_NEGATIVE) { + Intent intent = new Intent(this, NoteEditActivity.class); + intent.setAction(Intent.ACTION_VIEW); + intent.putExtra(Intent.EXTRA_UID, mNoteId); + startActivity(intent); + } + } +// 用于处理对话框中按钮的点击事件,如果是进入按钮,则启动NoteEditActivity并携带提醒的ID,将它作为Extra参数传递给NoteEditActivity以便打开对应的Note。如果是确认按钮,则什么都不做。 + + public void onDismiss(DialogInterface dialog) { + stopAlarmSound(); + finish(); + } +// 用于处理提醒对话框关闭事件,停止播放提醒声音并结束Activity。 + + private void stopAlarmSound() { + if (mPlayer != null) { + mPlayer.stop(); + mPlayer.release(); + mPlayer = null; + } + } +} +// 用于停止播放提醒声音。 + + +// Apache许可证协议 + +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; + + +//这里定义了一个包名为net.micode.notes.ui的Java类AlarmInitReceiver,它继承了BroadcastReceiver类。引入了Android系统提供的AlarmManager、PendingIntent、BroadcastReceiver、ContentUris等类。还引入了笔记相关的数据模型Notes和NoteColumns。 +//PROJECTION是笔记查询时的投影,指定了需要查询的列。COLUMN_ID和COLUMN_ALERTED_DATE则是笔记查询结果中对应的列索引。 +public class AlarmInitReceiver extends BroadcastReceiver { + + private static final String [] PROJECTION = new String [] { + NoteColumns.ID, + NoteColumns.ALERTED_DATE + }; + + 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(); + Cursor c = context.getContentResolver().query(Notes.CONTENT_NOTE_URI, + PROJECTION, + NoteColumns.ALERTED_DATE + ">? AND " + NoteColumns.TYPE + "=" + Notes.TYPE_NOTE, + new String[] { String.valueOf(currentDate) }, + null); + + 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(); + } + } +// onReceive方法是接收广播后执行的方法。在这里,首先获取当前时间戳currentDate,然后通过getContentResolver().query方法查询所有需要提醒的笔记,查询条件是提醒时间大于当前时间戳并且类型是笔记类型。 +} +// Apache许可证协议 + +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); + intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); + context.startActivity(intent); + } +// onReceive方法中,首先获取传入的Intent对象,并通过setClass方法将Intent的目标Activity设置为AlarmAlertActivity。然后通过addFlags方法设置Intent的标志位FLAG_ACTIVITY_NEW_TASK,表示启动一个新的Task来显示Activity。最后通过context.startActivity方法启动Activity。 +} +//这段代码的作用是在系统闹钟触发时,启动AlarmAlertActivity来显示提醒内容。 +// Apache许可证协议 + +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 { + + 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; + + private final NumberPicker mDateSpinner; + private final NumberPicker mHourSpinner; + private final NumberPicker mMinuteSpinner; + private final NumberPicker mAmPmSpinner; + private Calendar mDate; + + 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);// 使用Calendar类的add方法将mDate对象的日期字段(即Calendar.DAY_OF_YEAR)增加newVal - oldVal天,以更新日期。 + updateDateControl();//调用updateDateControl方法,该方法用来更新日期控件的显示。 + onDateTimeChanged();//调用onDateTimeChanged方法,该方法用来通知其他组件该日期时间已经发生了变化。 + } + }; + + private NumberPicker.OnValueChangeListener mOnHourChangedListener = new NumberPicker.OnValueChangeListener() { + @Override + public void onValueChange(NumberPicker picker, int oldVal, int newVal) { + boolean isDateChanged = false; + Calendar cal = Calendar.getInstance(); + 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; + } 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; + } + 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(); + } + } else { + if (oldVal == HOURS_IN_ALL_DAY - 1 && newVal == 0) { + cal.setTimeInMillis(mDate.getTimeInMillis()); + cal.add(Calendar.DAY_OF_YEAR, 1); + isDateChanged = true; + } else if (oldVal == 0 && newVal == HOURS_IN_ALL_DAY - 1) { + cal.setTimeInMillis(mDate.getTimeInMillis()); + cal.add(Calendar.DAY_OF_YEAR, -1); + isDateChanged = true; + } + } +// 根据24小时制或12小时制以及上下午状态等情况,计算新的时间并更新到mDate字段中。 + int newHour = mHourSpinner.getValue() % HOURS_IN_HALF_DAY + (mIsAm ? 0 : HOURS_IN_HALF_DAY); + mDate.set(Calendar.HOUR_OF_DAY, newHour); + onDateTimeChanged(); +// 调用onDateTimeChanged方法,该方法用来通知其他组件该日期时间已经发生了变化。 + if (isDateChanged) { + setCurrentYear(cal.get(Calendar.YEAR)); + setCurrentMonth(cal.get(Calendar.MONTH)); + setCurrentDay(cal.get(Calendar.DAY_OF_MONTH)); + } +// 如果日期发生了变化,则调用setCurrentYear和setCurrentMonth方法更新年份和月份控件的显示。 + } + }; +// 这段代码定义了一个监听器对象,用于监听小时NumberPicker控件的值变化事件。 + + private NumberPicker.OnValueChangeListener mOnMinuteChangedListener = new NumberPicker.OnValueChangeListener() { + @Override + public void onValueChange(NumberPicker picker, int oldVal, int newVal) { + int minValue = mMinuteSpinner.getMinValue(); + int maxValue = mMinuteSpinner.getMaxValue(); + int offset = 0; + if (oldVal == maxValue && newVal == minValue) { + offset += 1; + } else if (oldVal == minValue && newVal == maxValue) { + offset -= 1; + } +// 当监听器被触发时,它首先根据 NumberPicker 的旧值和新值计算出一个 offset。如果旧值是最大值且新值是最小值,则将 offset 增加1。如果旧值是最小值且新值是最大值,则将 offset 减少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(); + } + } +// 如果 offset 不为0,则监听器会更新 mDate 变量,将 offset 添加到小时数中,将小时选择器的值设置为当前小时,调用 updateDateControl() 更新日期控件,并根据新的小时数更新 AM/PM 控件。 + mDate.set(Calendar.MINUTE, newVal); + onDateTimeChanged(); +// 更新 mDate 变量后,监听器将分钟值设置为新值,并调用 onDateTimeChanged() 通知任何监听器日期和时间已更新。 + } + }; +// 定义了一个私有字段 mOnMinuteChangedListener,它是 NumberPicker.OnValueChangeListener 的一个实例。当表示分钟的 NumberPicker 的值发生变化时,此监听器将被触发。 + + private NumberPicker.OnValueChangeListener mOnAmPmChangedListener = new NumberPicker.OnValueChangeListener() { + @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(); + } +// 当监听器被触发时,它将 mIsAm 变量取反,表示用户选择了 AM 还是 PM。如果 mIsAm 是 true,则说明用户选择了 AM,此时监听器将 mDate 变量减去半天的小时数。如果 mIsAm 是 false,则说明用户选择了 PM,此时监听器将 mDate 变量加上半天的小时数。然后,监听器会调用 updateAmPmControl() 更新 AM/PM 控件,并调用 onDateTimeChanged() 通知任何监听器日期和时间已更新。 + }; +// 定义了一个私有字段 mOnAmPmChangedListener,它是 NumberPicker.OnValueChangeListener 的一个实例。当表示 AM/PM 的 NumberPicker 的值发生变化时,此监听器将被触发。 + + public interface OnDateTimeChangedListener { + void onDateTimeChanged(DateTimePicker view, int year, int month, + int dayOfMonth, int hourOfDay, int minute); +// 该接口有一个抽象方法 onDateTimeChanged(),它在日期或时间发生变化时被调用。该方法接收 6 个参数:view 表示当前 DateTimePicker 实例,year 表示年份,month 表示月份(从 0 开始),dayOfMonth 表示月中的某一天,hourOfDay 表示小时数(24 小时制),minute 表示分钟数。 + } +//定义了一个接口 OnDateTimeChangedListener,它用于监听日期和时间的变化。当日期或时间发生变化时,可以调用该接口的 onDateTimeChanged() 方法通知任何实现该接口的监听器。通过实现该接口并在需要的地方注册监听器,可以在日期或时间发生变化时执行自定义操作,例如更新 UI 或执行某些计算。 + + public DateTimePicker(Context context) { + this(context, System.currentTimeMillis()); + } + + public DateTimePicker(Context context, long date) { + this(context, date, DateFormat.is24HourFormat(context)); + } + + public DateTimePicker(Context context, long date, boolean is24HourView) { + super(context); + + mDate = Calendar.getInstance(); + mInitialising = true; + mIsAm = getCurrentHourOfDay() >= HOURS_IN_HALF_DAY; + inflate(context, R.layout.datetime_picker, this); +// 首先调用了父类 ViewGroup 的构造函数 super(context) 来初始化 DateTimePicker 实例。然后,代码使用 Calendar.getInstance() 获取一个 Calendar 对象,该对象表示当前日期和时间。变量 mIsAm 被初始化为当前小时数是否大于等于 12,以确定当前用户选择的是 AM 还是 PM。 + + mDateSpinner = (NumberPicker) findViewById(R.id.date); + mDateSpinner.setMinValue(DATE_SPINNER_MIN_VAL); + mDateSpinner.setMaxValue(DATE_SPINNER_MAX_VAL); + mDateSpinner.setOnValueChangedListener(mOnDateChangedListener); +// 获取了布局文件中 ID 为 date 的 NumberPicker 控件,并将其赋值给 mDateSpinner 变量。然后,使用 setMinValue() 和 setMaxValue() 方法将 mDateSpinner 的最小值和最大值分别设置为 DATE_SPINNER_MIN_VAL 和 DATE_SPINNER_MAX_VAL。使用 setOnValueChangedListener() 方法将 mDateSpinner 的值更改监听器设置为 mOnDateChangedListener。这意味着当 mDateSpinner 的值更改时,将会调用 mOnDateChangedListener 中的方法来处理这个事件。 + + 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); +// 获取了布局文件中 ID 为 hour 和 minute 的 NumberPicker 控件,并将它们分别赋值给 mHourSpinner 和 mMinuteSpinner 变量。然后,使用 setOnValueChangedListener() 方法将 mHourSpinner 和 mMinuteSpinner 控件的值更改监听器分别设置为 mOnHourChangedListener 和 mOnMinuteChangedListener。 +// 接下来,使用 setMinValue() 和 setMaxValue() 方法将 mMinuteSpinner 的最小值和最大值分别设置为 MINUT_SPINNER_MIN_VAL 和 MINUT_SPINNER_MAX_VAL,以限制分钟选择器的范围。 +// 最后,使用 setOnLongPressUpdateInterval() 方法将 mMinuteSpinner 的长按更新间隔设置为 100 毫秒。这意味着当用户长按 mMinuteSpinner 中的增加或减少按钮时,它将以每 100 毫秒的速度连续增加或减少 mMinuteSpinner 的值。 +// 通过设置 NumberPicker 的值更改监听器和其他属性,代码实现了一个可以选择小时和分钟的控件,并将它们分别绑定到 mHourSpinner 和 mMinuteSpinner 变量上,以便在之后的操作中使用。 + + String[] stringsForAmPm = new DateFormatSymbols().getAmPmStrings();//获取了当前设备的日期格式符号,并使用 getAmPmStrings() 方法从中获取 AM/PM 格式符号的字符串数组,并将其赋值给 stringsForAmPm 变量。 + mAmPmSpinner = (NumberPicker) findViewById(R.id.amPm); + mAmPmSpinner.setMinValue(AMPM_SPINNER_MIN_VAL); + mAmPmSpinner.setMaxValue(AMPM_SPINNER_MAX_VAL); +// 获取了布局文件中 ID 为 amPm 的 NumberPicker 控件,并将其赋值给 mAmPmSpinner 变量。使用 setMinValue() 和 setMaxValue() 方法将 mAmPmSpinner 的最小值和最大值分别设置为 AMPM_SPINNER_MIN_VAL 和 AMPM_SPINNER_MAX_VAL,以限制 AM/PM 选择器的范围。 + mAmPmSpinner.setDisplayedValues(stringsForAmPm);//使用 setDisplayedValues() 方法将 stringsForAmPm 数组设置为 mAmPmSpinner 的显示值。这意味着 AM/PM 选择器将显示 stringsForAmPm 数组中的字符串,而不是默认的数字值。 + mAmPmSpinner.setOnValueChangedListener(mOnAmPmChangedListener);//使用 setOnValueChangedListener() 方法将 mAmPmSpinner 的值更改监听器设置为 mOnAmPmChangedListener。这意味着当用户更改 AM/PM 选择器的值时,将调用 mOnAmPmChangedListener 中的方法来处理这个事件。 + + // update controls to initial state + updateDateControl(); + updateHourControl(); + updateAmPmControl(); + + set24HourView(is24HourView); +// 代码调用了 updateDateControl()、updateHourControl() 和 updateAmPmControl() 方法,以便将控件显示为当前日期和时间的值。然后,代码调用了 set24HourView() 方法将选择器的时间格式设置为 24 小时制或 12 小时制。 + + // set to current time + setCurrentDate(date); + + setEnabled(isEnabled()); + + // set the content descriptions + mInitialising = false; +// 调用了 setCurrentDate() 方法将选择器的日期和时间设置为指定的日期和时间,调用 setEnabled() 方法将选择器的可用状态设置为指定的值,并将 mInitialising 标志设置为 false,以便通知选择器已完成初始化。 + } + + @Override + public void setEnabled(boolean enabled) { + if (mIsEnabled == enabled) { + return; + } +// 当调用 setEnabled() 方法时,如果传入的参数 enabled 与当前的 mIsEnabled 变量的值相同,说明选择器的可用状态没有发生变化,直接返回即可。 + super.setEnabled(enabled); + mDateSpinner.setEnabled(enabled); + mMinuteSpinner.setEnabled(enabled); + mHourSpinner.setEnabled(enabled); + mAmPmSpinner.setEnabled(enabled); + mIsEnabled = enabled; +// 代码首先调用父类的 setEnabled() 方法,将整个时间选择器的可用状态设置为传入的参数 enabled。然后,分别调用 mDateSpinner、mMinuteSpinner、mHourSpinner 和 mAmPmSpinner 的 setEnabled() 方法,将它们的可用状态也设置为传入的参数 enabled。 +//最后,将 mIsEnabled 变量的值设置为传入的参数 enabled,以便在下一次调用 setEnabled() 方法时使用。 + } +// 重写 setEnabled() 方法,代码实现了一个可以同时设置整个时间选择器的可用状态的功能。 + + @Override + public boolean isEnabled() { + return mIsEnabled; + } + + /** + * Get the current date in millis + * + * @return the current date in millis + */ + public long getCurrentDateInTimeMillis() { + return mDate.getTimeInMillis(); + } + + /** + * 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)); + } + + /** + * 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); + } + + /** + * Get current year + * + * @return The current year + */ + 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); +// 当传入的参数 is24HourView 与当前的 mIs24HourView 变量的值相同时,方法直接返回。否则,将 mIs24HourView 变量的值设置为传入的参数 is24HourView,表示时间选择器的显示格式已经更改。 + int hour = getCurrentHourOfDay(); + updateHourControl(); + setCurrentHour(hour); + updateAmPmControl(); +// 获取当前的小时数并调用 updateHourControl() 方法更新小时选择器,以保持小时选择器的一致性。接着,使用 setCurrentHour() 方法将当前的小时数设置回时间选择器,并调用 updateAmPmControl() 方法更新 AM/PM 选择器。 + } +//通过设置 AM/PM 选择器的可见性和更新时间选择器的小时控件和 AM/PM 控件,代码实现了一个可以切换时间选择器显示格式的功能。 + + 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(); + } +// 用于更新日期选择器的显示值。它首先获取当前日期并将其设置为日历实例 cal 的时间。然后,cal 被设置为一周的第一天,以确保日期选择器显示一周的日期。 +//接下来,使用 setDisplayedValues() 方法将日期选择器的显示值设置为 null,以便重新生成新的日期显示值。然后,使用循环从 cal 中获取每一天的日期,并将其格式化为 MM.dd EEEE 的格式,并将其存储在一个字符串数组中。最后,使用 setDisplayedValues() 方法将新的日期显示值设置为 mDateSpinner,并将当前选择的日期值设置为一周的中间值,以保持日期选择器的一致性。 + + private void updateAmPmControl() { + if (mIs24HourView) { + mAmPmSpinner.setVisibility(View.GONE); + } else { + int index = mIsAm ? Calendar.AM : Calendar.PM; + mAmPmSpinner.setValue(index); + mAmPmSpinner.setVisibility(View.VISIBLE); + } + } +// 用于更新 AM/PM 选择器的显示值。如果时间选择器为 24 小时格式,则将 AM/PM 选择器隐藏;否则,根据当前是否为 AM,将 AM/PM 选择器的值设置为 Calendar.AM 或 Calendar.PM,并将其可见性设置为 View.VISIBLE。 + + 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); + } + } +// 用于更新小时选择器的显示值。如果时间选择器为 24 小时格式,则将小时选择器的最小值和最大值分别设置为 HOUR_SPINNER_MIN_VAL_24_HOUR_VIEW 和 HOUR_SPINNER_MAX_VAL_24_HOUR_VIEW;否则,将小时选择器的最小值和最大值分别设置为 HOUR_SPINNER_MIN_VAL_12_HOUR_VIEW 和 HOUR_SPINNER_MAX_VAL_12_HOUR_VIEW。 + + /** + * 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()); + } + } +} + +// Apache许可证协议 + +package net.micode.notes.ui; + +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; + +import net.micode.notes.R; +import net.micode.notes.ui.DateTimePicker.OnDateTimeChangedListener; + +import java.util.Calendar; + +public class DateTimePickerDialog extends AlertDialog implements OnClickListener { + + private Calendar mDate = Calendar.getInstance(); + private boolean mIs24HourView; + private OnDateTimeSetListener mOnDateTimeSetListener; + private DateTimePicker mDateTimePicker; + + public interface OnDateTimeSetListener { + void OnDateTimeSet(AlertDialog dialog, long date); + } +// 实现了一个 OnDateTimeSetListener 接口,该接口定义了一个 OnDateTimeSet() 方法,用于在用户选择日期时间后通知调用者。 + + public DateTimePickerDialog(Context context, long date) { + super(context); + mDateTimePicker = new DateTimePicker(context); + setView(mDateTimePicker); + 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); + updateTitle(mDate.getTimeInMillis()); + } + }); +// 包含了一个 DateTimePicker 控件,用于让用户选择日期和时间。通过 mDateTimePicker.setOnDateTimeChangedListener() 方法,当用户选择日期和时间时,将更新 mDate 的值,并使用 updateTitle() 方法更新对话框的标题。 + mDate.setTimeInMillis(date); + mDate.set(Calendar.SECOND, 0); + mDateTimePicker.setCurrentDate(mDate.getTimeInMillis()); + setButton(context.getString(R.string.datetime_dialog_ok), this); + setButton2(context.getString(R.string.datetime_dialog_cancel), (OnClickListener)null); + set24HourView(DateFormat.is24HourFormat(this.getContext())); + updateTitle(mDate.getTimeInMillis()); + } + + public void set24HourView(boolean is24HourView) { + mIs24HourView = is24HourView; + } +//set24HourView() 方法,用于设置日期时间选择器是否为 24 小时格式。默认情况下,该值将由系统的设置决定。 + + public void setOnDateTimeSetListener(OnDateTimeSetListener callBack) { + mOnDateTimeSetListener = callBack; + } + + 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)); + } + + public void onClick(DialogInterface arg0, int arg1) { + if (mOnDateTimeSetListener != null) { + mOnDateTimeSetListener.OnDateTimeSet(this, mDate.getTimeInMillis()); + } + } +// 重写了 onClick() 方法,以便在用户点击“确定”按钮后,将用户选择的日期时间作为参数传递到 OnDateTimeSet() 方法中,从而通知调用者。 + +} +// Apache许可证协议 +package net.micode.notes.ui; + +import android.content.Context; +import android.view.Menu; +import android.view.MenuItem; +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; + private Menu mMenu; +// 一个 Button 控件,用于显示菜单的标题,以及一个 PopupMenu 对象,用于显示菜单项。在构造函数中,该类接受一个菜单资源 ID,并使用 mPopupMenu.getMenuInflater().inflate() 方法从 XML 资源中加载菜单项,然后将菜单项添加到 mMenu 对象中。 + + public DropdownMenu(Context context, Button button, int menuId) { + mButton = button; + mButton.setBackgroundResource(R.drawable.dropdown_icon); + mPopupMenu = new PopupMenu(context, mButton); + mMenu = mPopupMenu.getMenu(); + mPopupMenu.getMenuInflater().inflate(menuId, mMenu); + mButton.setOnClickListener(v -> mPopupMenu.show()); +// 重写了 setOnClickListener() 方法,以便在用户点击 Button 控件时显示下拉菜单。 + } +// 在 Button 控件上注册一个单击事件监听器,并在该监听器中实现下拉菜单的显示逻辑。 + + public void setOnDropdownMenuItemClickListener(OnMenuItemClickListener listener) { + if (mPopupMenu != null) { + mPopupMenu.setOnMenuItemClickListener(listener); + } + } +// setOnDropdownMenuItemClickListener() 方法,用于设置菜单项的点击监听器。通过这个方法,应用程序可以在用户选择菜单项时执行相应的操作。 + + public MenuItem findItem(int id) { + return mMenu.findItem(id); + }//findItem() 方法用于查找指定 ID 的菜单项 + + public void setTitle(CharSequence title) { + mButton.setText(title); + }//用于设置菜单的标题。 +} +// Apache许可证协议 + +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 { + public static final String [] PROJECTION = { + NoteColumns.ID, + NoteColumns.SNIPPET + }; + + public static final int ID_COLUMN = 0; + public static final int NAME_COLUMN = 1; + + public FoldersListAdapter(Context context, Cursor c) { + super(context, c); + } + + @Override + public View newView(Context context, Cursor cursor, ViewGroup parent) { + return new FolderListItem(context); + } +// 用于创建新的视图,该方法返回一个新的 FolderListItem 对象,它是一个自定义的 LinearLayout,用于显示文件夹列表项的布局。 + + @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); + } + } +// 用于绑定视图和数据,该方法会将数据从 Cursor 对象中读取出来,并将其绑定到 FolderListItem 视图中。 + + 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); + } +// 获取文件夹列表中某个位置的文件夹名称。 + + private class FolderListItem extends LinearLayout { + private TextView mName; + + public FolderListItem(Context context) { + super(context); + inflate(context, R.layout.folder_list_item, this); + mName = (TextView) findViewById(R.id.tv_folder_name); + } + + public void bind(String name) { + mName.setText(name); + } + } +// FolderListItem 类是一个自定义的 LinearLayout,用于显示文件夹列表项的布局。它包含一个 TextView 控件,用于显示文件夹名称。 + +} +//这段代码是一个自定义的 CursorAdapter 类 FoldersListAdapter,用于在 Android 应用程序中显示一个文件夹列表。 +// Apache许可证协议 + +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 { + private class HeadViewHolder { + public TextView tvModified; + + public ImageView ivAlertIcon; + + public TextView tvAlertDate; + + public ImageView ibSetBgColor; + } +// HeadViewHolder类定义了一组视图,用于在列表或网格中显示信息。这些视图包括一个TextView用于显示修改信息,一个ImageView用于显示警报图标,另一个TextView用于显示警报日期,还有一个ImageView用于选择背景颜色。 + + 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); + } + + 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); + } +// sBgSelectorBtnsMap是一个HashMap,将用于选择背景颜色的ImageView视图的资源ID映射到整数值,这些整数值在ResourceParser类中定义。同样,sBgSelectorSelectionMap将整数值映射到所选ImageView视图的资源ID。 + + 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); + } + + 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); + } +// sFontSizeBtnsMap将用于选择字体大小的LinearLayout视图的资源ID映射到整数值,而sFontSelectorSelectionMap将整数值映射到所选ImageView视图的资源ID。 + + private static final String TAG = "NoteEditActivity"; + + private HeadViewHolder mNoteHeaderHolder; + + private View mHeadViewPanel; + + private View mNoteBgColorSelector; + + private View mFontSizeSelector; + + private EditText mNoteEditor; + + private View mNoteEditorPanel; + + private WorkingNote mWorkingNote; + + private SharedPreferences mSharedPrefs; + private int mFontSizeId; + + 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; + + private String mUserQuery; + private Pattern mPattern; + + @Override + protected void onCreate(Bundle savedInstanceState) { + super.onCreate(savedInstanceState); + this.setContentView(R.layout.note_edit); + + 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"); + } + } + + private boolean initActivityState(Intent intent) { + /** + * If the user specified the {@link Intent#ACTION_VIEW} but not provided with id, + * then jump to the NotesListActivity + */ +// 果用户指定了 Intent.ACTION_VIEW 动作但没有提供ID,则跳转到 NotesListActivity + mWorkingNote = null;//在方法中,首先将mWorkingNote设置为null。然后,根据传入的Intent的动作(action)进行选择。 + if (TextUtils.equals(Intent.ACTION_VIEW, intent.getAction())) { +// Intent中获取笔记ID + long noteId = intent.getLongExtra(Intent.EXTRA_UID, 0); + // 将用户查询字符串设置为空 + mUserQuery = ""; + // 如果Intent包含了搜索结果的额外数据,则从额外数据中获取笔记ID,并将用户查询字符串设置为搜索管理器中的用户查询字符串 + + /** + * Starting from the searched result + */ + if (intent.hasExtra(SearchManager.EXTRA_DATA_KEY)) { + noteId = Long.parseLong(intent.getStringExtra(SearchManager.EXTRA_DATA_KEY)); + mUserQuery = intent.getStringExtra(SearchManager.USER_QUERY); + } + + // 如果笔记在笔记数据库中不存在,则跳转到 NotesListActivity 并显示错误信息的Toast,最后结束 Activity 并返回 false + if (!DataUtils.visibleInNoteDatabase(getContentResolver(), noteId, Notes.TYPE_NOTE)) { + Intent jump = new Intent(this, NotesListActivity.class); + startActivity(jump); + showToast(R.string.error_note_not_exist); + finish(); + return false; + } else { + // 加载笔记 + mWorkingNote = WorkingNote.load(this, noteId); + if (mWorkingNote == null) { + Log.e(TAG, "load note failed with note id" + noteId); + finish(); + return false; + } + } +// 如果该Intent的动作(action)为Intent.ACTION_VIEW,则从该Intent中获取笔记的ID(noteId)。如果该Intent还包含了一个搜索结果(Search)的额外数据(extra data key),则将noteId从额外数据中获取,并将用户查询字符串(mUserQuery)设置为搜索管理器中的用户查询字符串(SearchManager.USER_QUERY)。如果noteId在笔记数据库中不存在,则将Activity转到NotesListActivity,并显示一个错误信息的Toast,最后结束Activity并返回false。如果noteId在笔记数据库中存在,则加载该笔记的工作副本(mWorkingNote),如果加载失败,则结束Activity并返回false。 + 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())) { + // New note 如果用户指定了 Intent.ACTION_INSERT_OR_EDIT 动作,则获取笔记ID,如果笔记ID存在,则加载笔记,否则,创建一个新的笔记 + 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_INVALID); + int bgResId = intent.getIntExtra(Notes.INTENT_EXTRA_BACKGROUND_ID, + ResourceParser.getDefaultBgId(this)); + + // 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; + } + } else { + mWorkingNote = WorkingNote.createEmptyNote(this, folderId, widgetId, + widgetType, bgResId); + mWorkingNote.convertToCallNote(phoneNumber, callDate); + } + } else { + mWorkingNote = WorkingNote.createEmptyNote(this, folderId, widgetId, widgetType, + bgResId); + } + + 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() { + // 使用mFontSizeId设置笔记编辑器的文本外观。 + mNoteEditor.setTextAppearance(this, TextAppearanceResources + .getTexAppearanceResource(mFontSizeId)); + // 如果mWorkingNote的CheckListMode为TextNote.MODE_CHECK_LIST,则将编辑器转换为列表模式。 + if (mWorkingNote.getCheckListMode() == TextNote.MODE_CHECK_LIST) { + switchToListMode(mWorkingNote.getContent()); + } else { + // 如果mWorkingNote的CheckListMode不是TextNote.MODE_CHECK_LIST,则在编辑器中显示笔记内容,并使用mUserQuery高亮显示查询结果。 + mNoteEditor.setText(getHighlightQueryResult(mWorkingNote.getContent(), mUserQuery)); + mNoteEditor.setSelection(mNoteEditor.getText().length()); + } + // 隐藏背景选择器中所有不在sBgSelectorSelectionMap中的ID的视图。 + for (Integer id : sBgSelectorSelectionMap.keySet()) { + findViewById(sBgSelectorSelectionMap.get(id)).setVisibility(View.GONE); + } + // 设置mHeadViewPanel和mNoteEditorPanel的背景颜色为mWorkingNote的标题背景ID和背景颜色ID。 + mHeadViewPanel.setBackgroundResource(mWorkingNote.getTitleBgResId()); + mNoteEditorPanel.setBackgroundResource(mWorkingNote.getBgColorResId()); + + // 在标题栏中显示修改日期。 + 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(); + } + + private void showAlertHeader() { + // 如果mWorkingNote具有闹钟提醒,则检查当前时间是否超过提醒时间,如果超过,则在标题栏中显示“note_alert_expired”文本;否则,在标题栏中显示相对时间。 + if (mWorkingNote.hasClockAlert()) { + long time = System.currentTimeMillis(); + if (time > mWorkingNote.getAlertDate()) { + mNoteHeaderHolder.tvAlertDate.setText(R.string.note_alert_expired); + } else { + mNoteHeaderHolder.tvAlertDate.setText(DateUtils.getRelativeTimeSpanString( + mWorkingNote.getAlertDate(), time, DateUtils.MINUTE_IN_MILLIS)); + } + // 将标题栏中的提醒日期文本和提醒图标设置为可见。 + mNoteHeaderHolder.tvAlertDate.setVisibility(View.VISIBLE); + mNoteHeaderHolder.ivAlertIcon.setVisibility(View.VISIBLE); + } else { + // 如果mWorkingNote没有闹钟提醒,则将标题栏中的提醒日期文本和提醒图标设置为不可见。 + 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(); + } + outState.putLong(Intent.EXTRA_UID, mWorkingNote.getNoteId()); + Log.d(TAG, "Save working note id: " + mWorkingNote.getNoteId() + " onSaveInstanceState"); + } + + @Override + public boolean dispatchTouchEvent(MotionEvent ev) { + // 如果笔记背景颜色选择器可见,并且触摸事件不在笔记背景颜色选择器范围内,则隐藏笔记背景颜色选择器并返回true。 + if (mNoteBgColorSelector.getVisibility() == View.VISIBLE + && !inRangeOfView(mNoteBgColorSelector, ev)) { + mNoteBgColorSelector.setVisibility(View.GONE); + return true; + } + // 如果字体大小选择器可见,并且触摸事件不在字体大小选择器范围内,则隐藏字体大小选择器并返回true。 + + if (mFontSizeSelector.getVisibility() == View.VISIBLE + && !inRangeOfView(mFontSizeSelector, ev)) { + mFontSizeSelector.setVisibility(View.GONE); + return true; + } + // 返回父类的dispatchTouchEvent方法。 + return super.dispatchTouchEvent(ev); + } + + private boolean inRangeOfView(View view, MotionEvent ev) { + // 获取视图在屏幕上的位置。 + int[] location = new int[2]; + view.getLocationOnScreen(location); + int x = location[0]; + int y = location[1]; + // 如果触摸事件的x坐标小于视图的x坐标、大于视图的宽度和x坐标之和、y坐标小于视图的y坐标、或大于视图的高度和y坐标之和,则返回false,否则返回true。 + if (ev.getX() < x + || ev.getX() > (x + view.getWidth()) + || ev.getY() < y + || ev.getY() > (y + view.getHeight())) { + 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); + } + + mFontSizeSelector = findViewById(R.id.font_size_selector); + for (int id : sFontSizeBtnsMap.keySet()) { + View view = findViewById(id); + view.setOnClickListener(this); + } + 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(); + }//onPause()方法在活动即将暂停时被调用。如果有任何更改,它会保存当前笔记,并清除任何设置状态。 + + 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, "Unsupported widget type"); + return; + } + + intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS, new int[]{ + mWorkingNote.getWidgetId() + }); + + sendBroadcast(intent); + setResult(RESULT_OK, intent); + }//updateWidget()方法更新与当前笔记相关联的小部件。它创建一个意图,并根据笔记的小部件类型设置相应的小部件提供程序类。然后它发送一个广播,带有小部件ID以更新小部件。 + + + 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); + } + }//onClick()方法处理UI中各种按钮的点击事件。当单击相应的按钮时,它会显示颜色选择器或字体大小选择器。它还根据所选选项更新笔记的字体大小或背景颜色。 + + @Override + public void onBackPressed() { + if (clearSettingState()) { + return; + } + + saveNote(); + super.onBackPressed(); + }//onBackPressed()方法在按下返回按钮时被调用。它检查当前是否有任何设置状态处于活动状态,并清除它。然后它保存当前笔记并调用超类实现。 + + 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; + }//clearSettingState()方法检查当前是否有任何设置状态处于活动状态,并清除它。 + + public void onBackgroundColorChanged() { + findViewById(sBgSelectorSelectionMap.get(mWorkingNote.getBgColorId())).setVisibility( + View.VISIBLE); + mNoteEditorPanel.setBackgroundResource(mWorkingNote.getBgColorResId()); + mHeadViewPanel.setBackgroundResource(mWorkingNote.getTitleBgResId()); + }//onBackgroundColorChanged()方法在选择新的背景颜色时被调用。它更新笔记的背景颜色,并更新颜色选择器的颜色。 + + @Override + 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); + } 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; + }//onFontSizeChanged()方法在选择新的字体大小时被调用。它更新笔记的字体大小,并更新字体大小选择器的值。 + + @Override + public boolean onOptionsItemSelected(MenuItem item) { + switch (item.getItemId()) { + case R.id.menu_new_note: + createNewNote(); + break; + case R.id.menu_delete: + AlertDialog.Builder builder = new AlertDialog.Builder(this); + builder.setTitle(getString(R.string.alert_title_delete)); + builder.setIcon(android.R.drawable.ic_dialog_alert); + builder.setMessage(getString(R.string.alert_message_delete_note)); + builder.setPositiveButton(android.R.string.ok, + new DialogInterface.OnClickListener() { + public void onClick(DialogInterface dialog, int which) { + deleteCurrentNote(); + finish(); + } + }); + builder.setNegativeButton(android.R.string.cancel, null); + builder.show(); + break; + case R.id.menu_font_size: + mFontSizeSelector.setVisibility(View.VISIBLE); + findViewById(sFontSelectorSelectionMap.get(mFontSizeId)).setVisibility(View.VISIBLE); + break; + case R.id.menu_list_mode: + mWorkingNote.setCheckListMode(mWorkingNote.getCheckListMode() == 0 ? + TextNote.MODE_CHECK_LIST : 0); + break; + case R.id.menu_share: + getWorkingText(); + sendTo(this, mWorkingNote.getContent()); + break; + case R.id.menu_send_to_desktop: + sendToDesktop(); + break; + case R.id.menu_alert: + setReminder(); + break; + case R.id.menu_delete_remind: + mWorkingNote.setAlertDate(0, false); + break; + default: + break; + } + return true; + } + + private void setReminder() { + DateTimePickerDialog d = new DateTimePickerDialog(this, System.currentTimeMillis()); + d.setOnDateTimeSetListener(new OnDateTimeSetListener() { + public void OnDateTimeSet(AlertDialog dialog, long date) { + mWorkingNote.setAlertDate(date, true); + } + }); + d.show(); + } + + /** + * Share note to apps that support {@link Intent#ACTION_SEND} action + * and {@text/plain} type + */ + private void sendTo(Context context, String info) { + Intent intent = new Intent(Intent.ACTION_SEND); + intent.putExtra(Intent.EXTRA_TEXT, info); + intent.setType("text/plain"); + context.startActivity(intent); + }//sendTo(Context context, String info)方法创建一个新的意图,并使用Intent.EXTRA_TEXT将信息作为文本传递。它的目的是启动共享对话框,让用户分享笔记的内容。 + + + private void createNewNote() { + + // 首先,保存当前正在编辑的笔记 + saveNote(); + + // 为了安全起见,启动一个新的NoteEditActivity + finish(); + // 创建一个新的笔记 + Intent intent = new Intent(this, NoteEditActivity.class); + // 设置Intent.ACTION_INSERT_OR_EDIT和Notes.INTENT_EXTRA_FOLDER_ID,指示NoteEditActivity启动以插入或编辑笔记,并指定所选文件夹的ID。 + intent.setAction(Intent.ACTION_INSERT_OR_EDIT); + // 设置Intent.EXTRA_TITLE,指示NoteEditActivity启动以编辑笔记。 + intent.putExtra(Notes.INTENT_EXTRA_FOLDER_ID, mWorkingNote.getFolderId()); + // 启动NoteEditActivity + startActivity(intent); + }//createNewNote()方法保存当前正在编辑的笔记,然后启动一个新的NoteEditActivity以创建一个新的笔记。通过设置Intent.ACTION_INSERT_OR_EDIT和Notes.INTENT_EXTRA_FOLDER_ID,该方法指示NoteEditActivity启动以插入或编辑笔记,并指定所选文件夹的ID。 + + private void deleteCurrentNote() { + if (mWorkingNote.existInDatabase()) { + HashSet ids = new HashSet<>(); + long id = mWorkingNote.getNoteId(); + if (id != Notes.ID_ROOT_FOLDER) { + ids.add(id); + } else { + Log.d(TAG, "Wrong note id, should not happen"); + } + if (!DataUtils.batchDeleteNotes(getContentResolver(), ids)) { + Log.e(TAG, "Delete Note error"); + } + } + mWorkingNote.markDeleted(true); + }//deleteCurrentNote()方法删除当前笔记。如果该笔记已存储在数据库中,则将其从数据库中删除。如果应用程序处于同步模式下,则将其移动到垃圾文件夹中,而不是永久删除。无论是删除还是移动,该方法都会将当前笔记标记为已删除。 + + 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()) { + saveNote(); + } + if (mWorkingNote.getNoteId() > 0) { + Intent intent = new Intent(this, AlarmReceiver.class); + intent.setData(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, mWorkingNote.getNoteId())); + PendingIntent pendingIntent = PendingIntent.getBroadcast(this, 0, intent, 0); + AlarmManager alarmManager = ((AlarmManager) getSystemService(ALARM_SERVICE)); + showAlertHeader(); + if (!set) { + alarmManager.cancel(pendingIntent); + } else { + alarmManager.set(AlarmManager.RTC_WAKEUP, date, pendingIntent); + } + } 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, "Clock alert setting error"); + showToast(R.string.error_note_empty_for_clock); + } + } + + public void onWidgetChanged() { + updateWidget(); + } +// onWidgetChanged()方法会在小部件更改时被调用。它会调用updateWidget()方法来更新小部件。 + + public void onEditTextDelete(int index, String text) { + int childCount = mEditTextList.getChildCount(); + if (childCount == 1) { + return; + } + + for (int i = index + 1; i < childCount; i++) { + ((NoteEditText) mEditTextList.getChildAt(i).findViewById(R.id.et_edit_text)) + .setIndex(i - 1); + } + + mEditTextList.removeViewAt(index); + NoteEditText edit; + 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); + } + int length = edit.length(); + edit.append(text); + edit.requestFocus(); + edit.setSelection(length); + } +// onEditTextDelete(int index, String text)方法会在删除NoteEditText视图时被调用。该方法首先检查是否只有一个NoteEditText视图存在,如果是则直接返回。然后,该方法会将所有后续视图的索引递减1。接下来,该方法会删除指定索引处的NoteEditText视图,并将其文本追加到前一个视图的文本中,以便将文本合并到一个视图中。最后,该方法将焦点设置在前一个视图中,并将光标移动到文本末尾。 + + public void onEditTextEnter(int index, String text) { + // 不应该发生,检查调试 + if (index > mEditTextList.getChildCount()) { + Log.e(TAG, "Index out of mEditTextList boundrary, should not happen"); + } + + View view = getListItem(text, index); + mEditTextList.addView(view, index); + NoteEditText edit = (NoteEditText) view.findViewById(R.id.et_edit_text); + edit.requestFocus(); + edit.setSelection(0); + for (int i = index + 1; i < mEditTextList.getChildCount(); i++) { + ((NoteEditText) mEditTextList.getChildAt(i).findViewById(R.id.et_edit_text)) + .setIndex(i); + } + } + + private void switchToListMode(String text) { + mEditTextList.removeAllViews(); + String[] items = text.split("\n"); + int index = 0; + for (String item : items) { + if (!TextUtils.isEmpty(item)) { + mEditTextList.addView(getListItem(item, index)); + index++; + } + } + mEditTextList.addView(getListItem("", index)); + mEditTextList.getChildAt(index).findViewById(R.id.et_edit_text).requestFocus(); + + mNoteEditor.setVisibility(View.GONE); + mEditTextList.setVisibility(View.VISIBLE); + } +// switchToListMode(String text)方法用于切换到清单模式。该方法首先清除所有视图,然后将文本根据换行符分隔为多个条目,并将每个条目添加到mEditTextList中。同时,该方法会添加一个新的空条目,以便用户可以在列表末尾添加新的条目。最后,该方法会将焦点设置在最后一个条目上,并将编辑器视图隐藏,将列表视图显示。 + + private Spannable getHighlightQueryResult(String fullText, String userQuery) { + SpannableString spannable = new SpannableString(fullText == null ? "" : fullText); + if (!TextUtils.isEmpty(userQuery)) { + mPattern = Pattern.compile(userQuery); + Matcher m = mPattern.matcher(fullText); + 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); + start = m.end(); + } + } + return spannable; + } +// getHighlightQueryResult(String fullText, String userQuery)方法用于标记在搜索查询中匹配的文本。该方法将返回一个Spannable对象,其中查询匹配的文本会被高亮显示。 + + private View getListItem(String item, int index) { + View view = LayoutInflater.from(this).inflate(R.layout.note_edit_list_item, null); + final NoteEditText edit = (NoteEditText) view.findViewById(R.id.et_edit_text); + edit.setTextAppearance(this, TextAppearanceResources.getTexAppearanceResource(mFontSizeId)); + 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); + } + } + }); + + if (item.startsWith(TAG_CHECKED)) { + 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)) { + 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)); + return view; + } +// getListItem(String item, int index)方法用于获取一个清单视图。该方法将从R.layout.note_edit_list_item文件中充气视图。在充气视图之后,该方法会将文本添加到NoteEditText视图中,并将复选框设置为选中或未选中状态。如果条目已选中,则文本将具有删除线。最后,该方法将返回该视图。 + + public void onTextChange(int index, boolean hasText) { + if (index >= mEditTextList.getChildCount()) { + Log.e(TAG, "Wrong index, should not happen"); + return; + } + 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); + } + } +// onTextChange(int index, boolean hasText)方法用于在清单视图中标记是否有文本。如果hasText为true,则将显示复选框;否则,将隐藏复选框。 + + public void onCheckListModeChanged(int oldMode, int newMode) { + if (newMode == TextNote.MODE_CHECK_LIST) { + switchToListMode(mNoteEditor.getText().toString()); + } else { + if (!getWorkingText()) { + mWorkingNote.setWorkingText(mWorkingNote.getContent().replace(TAG_UNCHECKED + " ", + "")); + } + mNoteEditor.setText(getHighlightQueryResult(mWorkingNote.getContent(), mUserQuery)); + mEditTextList.setVisibility(View.GONE); + mNoteEditor.setVisibility(View.VISIBLE); + } + } +// onCheckListModeChanged(int oldMode, int newMode)方法用于在清单模式和文本编辑模式之间切换。如果新模式为清单模式,则将文本转换为清单视图;否则,将清单视图转换为文本编辑视图。 + + private boolean getWorkingText() { + boolean hasChecked = false; + if (mWorkingNote.getCheckListMode() == TextNote.MODE_CHECK_LIST) { + StringBuilder sb = new StringBuilder(); + for (int i = 0; i < mEditTextList.getChildCount(); i++) { + View view = mEditTextList.getChildAt(i); + NoteEditText edit = (NoteEditText) view.findViewById(R.id.et_edit_text); + if (!TextUtils.isEmpty(edit.getText())) { + if (((CheckBox) view.findViewById(R.id.cb_edit_item)).isChecked()) { + sb.append(TAG_CHECKED).append(" ").append(edit.getText()).append("\n"); + hasChecked = true; + } else { + sb.append(TAG_UNCHECKED).append(" ").append(edit.getText()).append("\n"); + } + } + } + mWorkingNote.setWorkingText(sb.toString()); + } else { + mWorkingNote.setWorkingText(mNoteEditor.getText().toString()); + } + return hasChecked; + } +// getWorkingText()方法用于获取当前工作文本。如果当前模式为清单模式,则将所有条目合并为一个字符串,并添加检查框状态。否则,将返回当前编辑器文本。 + + private boolean saveNote() { + getWorkingText(); + boolean saved = mWorkingNote.saveNote(); + 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 + */ + setResult(RESULT_OK); + } + return saved; + } + + 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(); + } + + if (mWorkingNote.getNoteId() > 0) { + Intent sender = new Intent(); + Intent shortcutIntent = new Intent(this, NoteEditActivity.class); + shortcutIntent.setAction(Intent.ACTION_VIEW); + 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); + sender.setAction("com.android.launcher.action.INSTALL_SHORTCUT"); + showToast(R.string.info_note_enter_desktop); + sendBroadcast(sender); + } 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); + } + } + + 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; + } + + private void showToast(int resId) { + showToast(resId, Toast.LENGTH_SHORT); + } + + private void showToast(int resId, int duration) { + Toast.makeText(this, resId, duration).show(); + } +}// Apache许可证协议 + +package net.micode.notes.ui; + +import android.content.Context; +import android.graphics.Rect; +import android.text.Layout; +import android.text.Selection; +import android.text.Spanned; +import android.text.TextUtils; +import android.text.style.URLSpan; +import android.util.AttributeSet; +import android.util.Log; +import android.view.ContextMenu; +import android.view.KeyEvent; +import android.view.MenuItem; +import android.view.MenuItem.OnMenuItemClickListener; +import android.view.MotionEvent; +import android.widget.EditText; + +import net.micode.notes.R; + +import java.util.HashMap; +import java.util.Map; + +public class NoteEditText extends EditText { + private static final String TAG = "NoteEditText"; + private int mIndex; + private int mSelectionStartBeforeDelete; + + private static final String SCHEME_TEL = "tel:" ; + private static final String SCHEME_HTTP = "http:" ; + private static final String SCHEME_EMAIL = "mailto:" ; + + private static final Map sSchemaActionResMap = new HashMap(); + static { + sSchemaActionResMap.put(SCHEME_TEL, R.string.note_link_tel); + sSchemaActionResMap.put(SCHEME_HTTP, R.string.note_link_web); + sSchemaActionResMap.put(SCHEME_EMAIL, R.string.note_link_email); + } + + /** + * Call by the {@link NoteEditActivity} to delete or add edit text + */ + public interface OnTextViewChangeListener { + /** + * Delete current edit text when {@link KeyEvent#KEYCODE_DEL} happens + * and the text is null + */ + void onEditTextDelete(int index, String text); + + /** + * Add edit text after current edit text when {@link KeyEvent#KEYCODE_ENTER} + * happen + */ + void onEditTextEnter(int index, String text); + + /** + * Hide or show item option when text change + */ + void onTextChange(int index, boolean hasText); + } + + private OnTextViewChangeListener mOnTextViewChangeListener; + + public NoteEditText(Context context) { + super(context, null); + mIndex = 0; + } + + public void setIndex(int index) { + mIndex = index; + }//用于设置控件在父容器中的位置索引 + + public void setOnTextViewChangeListener(OnTextViewChangeListener listener) { + mOnTextViewChangeListener = listener; + }//用于设置文本变化的监听器 + + public NoteEditText(Context context, AttributeSet attrs) { + super(context, attrs, android.R.attr.editTextStyle); + } + + public NoteEditText(Context context, AttributeSet attrs, int defStyle) { + super(context, attrs, defStyle); + } + + @Override + public boolean onTouchEvent(MotionEvent event) { + switch (event.getAction()) { + case MotionEvent.ACTION_DOWN: + + int x = (int) event.getX(); + int y = (int) event.getY(); + x -= getTotalPaddingLeft(); + y -= getTotalPaddingTop(); + x += getScrollX(); + y += getScrollY(); + + Layout layout = getLayout(); + int line = layout.getLineForVertical(y); + int off = layout.getOffsetForHorizontal(line, x); + Selection.setSelection(getText(), off); + break; + }//实现了点击控件后,将光标移动到点击位置的功能 + + return super.onTouchEvent(event); + } + + @Override + public boolean onKeyDown(int keyCode, KeyEvent event) { + switch (keyCode) { + case KeyEvent.KEYCODE_ENTER: + if (mOnTextViewChangeListener != null) { + return false; + } + break; + case KeyEvent.KEYCODE_DEL: + mSelectionStartBeforeDelete = getSelectionStart(); + break; + default: + break; + } + return super.onKeyDown(keyCode, event); + } + + @Override + public boolean onKeyUp(int keyCode, KeyEvent event) { + switch(keyCode) { + case KeyEvent.KEYCODE_DEL: + if (mOnTextViewChangeListener != null) { + if (0 == mSelectionStartBeforeDelete && mIndex != 0) { + mOnTextViewChangeListener.onEditTextDelete(mIndex, getText().toString()); + return true; + } + } else { + Log.d(TAG, "OnTextViewChangeListener was not seted"); + } + break; + case KeyEvent.KEYCODE_ENTER: + if (mOnTextViewChangeListener != null) { + int selectionStart = getSelectionStart(); + String text = getText().subSequence(selectionStart, length()).toString(); + setText(getText().subSequence(0, selectionStart)); + mOnTextViewChangeListener.onEditTextEnter(mIndex + 1, text); + } else { + Log.d(TAG, "OnTextViewChangeListener was not seted"); + } + break; + default: + break; + } + return super.onKeyUp(keyCode, event); + } +// onKeyDown和onKeyUp方法实现了按下和松开键盘按键时的响应。 + + @Override + protected void onFocusChanged(boolean focused, int direction, Rect previouslyFocusedRect) { + if (mOnTextViewChangeListener != null) { + mOnTextViewChangeListener.onTextChange(mIndex, focused || !TextUtils.isEmpty(getText())); + } + super.onFocusChanged(focused, direction, previouslyFocusedRect); + }//控件获得或失去焦点时触发,将焦点状态通知给监听器。 + + @Override + protected void onCreateContextMenu(ContextMenu menu) { + if (getText() instanceof Spanned) { + int selStart = getSelectionStart(); + int selEnd = getSelectionEnd(); + + int min = Math.min(selStart, selEnd); + int max = Math.max(selStart, selEnd); + + final URLSpan[] urls = ((Spanned) getText()).getSpans(min, max, URLSpan.class); + if (urls.length == 1) { + int defaultResId = 0; + for(String schema: sSchemaActionResMap.keySet()) { + if(urls[0].getURL().indexOf(schema) >= 0) { + defaultResId = sSchemaActionResMap.get(schema); + break; + } + } + + if (defaultResId == 0) { + defaultResId = R.string.note_link_other; + } + + menu.add(0, 0, 0, defaultResId).setOnMenuItemClickListener( + new OnMenuItemClickListener() { + public boolean onMenuItemClick(MenuItem item) { + // goto a new intent + urls[0].onClick(NoteEditText.this); + return true; + } + }); + } + } + super.onCreateContextMenu(menu); + } +// 创建上下文菜单,当用户长按控件中的链接时,根据链接的协议类型创建不同的菜单项,点击菜单项后跳转到相应的链接。 +} + +// Apache许可证协议 + +package net.micode.notes.ui; + +import android.content.Context; +import android.graphics.Rect; +import android.text.Layout; +import android.text.Selection; +import android.text.Spanned; +import android.text.TextUtils; +import android.text.style.URLSpan; +import android.util.AttributeSet; +import android.util.Log; +import android.view.ContextMenu; +import android.view.KeyEvent; +import android.view.MenuItem; +import android.view.MenuItem.OnMenuItemClickListener; +import android.view.MotionEvent; +import android.widget.EditText; + +import net.micode.notes.R; + +import java.util.HashMap; +import java.util.Map; + +public class NoteEditText extends EditText { + private static final String TAG = "NoteEditText"; + private int mIndex; + private int mSelectionStartBeforeDelete; + + private static final String SCHEME_TEL = "tel:" ; + private static final String SCHEME_HTTP = "http:" ; + private static final String SCHEME_EMAIL = "mailto:" ; + + private static final Map sSchemaActionResMap = new HashMap(); + static { + sSchemaActionResMap.put(SCHEME_TEL, R.string.note_link_tel); + sSchemaActionResMap.put(SCHEME_HTTP, R.string.note_link_web); + sSchemaActionResMap.put(SCHEME_EMAIL, R.string.note_link_email); + } + + /** + * Call by the {@link NoteEditActivity} to delete or add edit text + */ + public interface OnTextViewChangeListener { + /** + * Delete current edit text when {@link KeyEvent#KEYCODE_DEL} happens + * and the text is null + */ + void onEditTextDelete(int index, String text); + + /** + * Add edit text after current edit text when {@link KeyEvent#KEYCODE_ENTER} + * happen + */ + void onEditTextEnter(int index, String text); + + /** + * Hide or show item option when text change + */ + void onTextChange(int index, boolean hasText); + } + + private OnTextViewChangeListener mOnTextViewChangeListener; + + public NoteEditText(Context context) { + super(context, null); + mIndex = 0; + } + + public void setIndex(int index) { + mIndex = index; + }//用于设置控件在父容器中的位置索引 + + public void setOnTextViewChangeListener(OnTextViewChangeListener listener) { + mOnTextViewChangeListener = listener; + }//用于设置文本变化的监听器 + + public NoteEditText(Context context, AttributeSet attrs) { + super(context, attrs, android.R.attr.editTextStyle); + } + + public NoteEditText(Context context, AttributeSet attrs, int defStyle) { + super(context, attrs, defStyle); + } + + @Override + public boolean onTouchEvent(MotionEvent event) { + switch (event.getAction()) { + case MotionEvent.ACTION_DOWN: + + int x = (int) event.getX(); + int y = (int) event.getY(); + x -= getTotalPaddingLeft(); + y -= getTotalPaddingTop(); + x += getScrollX(); + y += getScrollY(); + + Layout layout = getLayout(); + int line = layout.getLineForVertical(y); + int off = layout.getOffsetForHorizontal(line, x); + Selection.setSelection(getText(), off); + break; + }//实现了点击控件后,将光标移动到点击位置的功能 + + return super.onTouchEvent(event); + } + + @Override + public boolean onKeyDown(int keyCode, KeyEvent event) { + switch (keyCode) { + case KeyEvent.KEYCODE_ENTER: + if (mOnTextViewChangeListener != null) { + return false; + } + break; + case KeyEvent.KEYCODE_DEL: + mSelectionStartBeforeDelete = getSelectionStart(); + break; + default: + break; + } + return super.onKeyDown(keyCode, event); + } + + @Override + public boolean onKeyUp(int keyCode, KeyEvent event) { + switch(keyCode) { + case KeyEvent.KEYCODE_DEL: + if (mOnTextViewChangeListener != null) { + if (0 == mSelectionStartBeforeDelete && mIndex != 0) { + mOnTextViewChangeListener.onEditTextDelete(mIndex, getText().toString()); + return true; + } + } else { + Log.d(TAG, "OnTextViewChangeListener was not seted"); + } + break; + case KeyEvent.KEYCODE_ENTER: + if (mOnTextViewChangeListener != null) { + int selectionStart = getSelectionStart(); + String text = getText().subSequence(selectionStart, length()).toString(); + setText(getText().subSequence(0, selectionStart)); + mOnTextViewChangeListener.onEditTextEnter(mIndex + 1, text); + } else { + Log.d(TAG, "OnTextViewChangeListener was not seted"); + } + break; + default: + break; + } + return super.onKeyUp(keyCode, event); + } +// onKeyDown和onKeyUp方法实现了按下和松开键盘按键时的响应。 + + @Override + protected void onFocusChanged(boolean focused, int direction, Rect previouslyFocusedRect) { + if (mOnTextViewChangeListener != null) { + mOnTextViewChangeListener.onTextChange(mIndex, focused || !TextUtils.isEmpty(getText())); + } + super.onFocusChanged(focused, direction, previouslyFocusedRect); + }//控件获得或失去焦点时触发,将焦点状态通知给监听器。 + + @Override + protected void onCreateContextMenu(ContextMenu menu) { + if (getText() instanceof Spanned) { + int selStart = getSelectionStart(); + int selEnd = getSelectionEnd(); + + int min = Math.min(selStart, selEnd); + int max = Math.max(selStart, selEnd); + + final URLSpan[] urls = ((Spanned) getText()).getSpans(min, max, URLSpan.class); + if (urls.length == 1) { + int defaultResId = 0; + for(String schema: sSchemaActionResMap.keySet()) { + if(urls[0].getURL().indexOf(schema) >= 0) { + defaultResId = sSchemaActionResMap.get(schema); + break; + } + } + + if (defaultResId == 0) { + defaultResId = R.string.note_link_other; + } + + menu.add(0, 0, 0, defaultResId).setOnMenuItemClickListener( + new OnMenuItemClickListener() { + public boolean onMenuItemClick(MenuItem item) { + // goto a new intent + urls[0].onClick(NoteEditText.this); + return true; + } + }); + } + } + super.onCreateContextMenu(menu); + } +// 创建上下文菜单,当用户长按控件中的链接时,根据链接的协议类型创建不同的菜单项,点击菜单项后跳转到相应的链接。 +}