zjq-branch
yysong 2 years ago
parent 1991329201
commit 8c96c67459

@ -1,158 +0,0 @@
/*
* Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
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);
}
Intent intent = getIntent();
try {
mNoteId = Long.valueOf(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();
}
}
private boolean isScreenOn() {
PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
return pm.isScreenOn();
}
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 e) {
// TODO Auto-generated catch block
e.printStackTrace();
} 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);
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);
}
public void onClick(DialogInterface dialog, int which) {
switch (which) {
case DialogInterface.BUTTON_NEGATIVE:
Intent intent = new Intent(this, NoteEditActivity.class);
intent.setAction(Intent.ACTION_VIEW);
intent.putExtra(Intent.EXTRA_UID, mNoteId);
startActivity(intent);
break;
default:
break;
}
}
public void onDismiss(DialogInterface dialog) {
stopAlarmSound();
finish();
}
private void stopAlarmSound() {
if (mPlayer != null) {
mPlayer.stop();
mPlayer.release();
mPlayer = null;
}
}
}

@ -1,65 +0,0 @@
/*
* Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
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
};
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();
}
}
}

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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

@ -1,491 +0,0 @@
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mDateupdateDateControl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());
}
}
}

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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
}

@ -17,6 +17,7 @@
package net.micode.notes.data; package net.micode.notes.data;
import android.content.Context; import android.content.Context;
import android.database.Cursor; import android.database.Cursor;
import android.provider.ContactsContract.CommonDataKinds.Phone; import android.provider.ContactsContract.CommonDataKinds.Phone;
import android.provider.ContactsContract.Data; import android.provider.ContactsContract.Data;
@ -24,29 +25,35 @@ import android.telephony.PhoneNumberUtils;
import android.util.Log; import android.util.Log;
import java.util.HashMap; import java.util.HashMap;
//change
public class Contact { public class Contact { //联系人
private static HashMap<String, String> sContactCache; private static HashMap<String, String> sContactCache;
private static final String TAG = "Contact"; private static final String TAG = "Contact";
private static final String CALLER_ID_SELECTION = "PHONE_NUMBERS_EQUAL(" + Phone.NUMBER // 定义字符串CALLER_ID_SELECTION
private static final String CALLER_ID_SELECTION = "PHONE_NUMBERS_EQUAL("
+ Phone.NUMBER
+ ",?) AND " + Data.MIMETYPE + "='" + Phone.CONTENT_ITEM_TYPE + "'" + ",?) AND " + Data.MIMETYPE + "='" + Phone.CONTENT_ITEM_TYPE + "'"
+ " AND " + Data.RAW_CONTACT_ID + " IN " + " AND " + Data.RAW_CONTACT_ID + " IN "
+ "(SELECT raw_contact_id " + "(SELECT raw_contact_id "
+ " FROM phone_lookup" + " FROM phone_lookup"
+ " WHERE min_match = '+')"; + " WHERE min_match = '+')";
// 获取联系人
public static String getContact(Context context, String phoneNumber) { public static String getContact(Context context, String phoneNumber) {
if(sContactCache == null) { if(sContactCache == null) {
sContactCache = new HashMap<String, String>(); sContactCache = new HashMap<String, String>();
} }
// 查找HashMap中是否已有phoneNumber信息
if(sContactCache.containsKey(phoneNumber)) { if(sContactCache.containsKey(phoneNumber)) {
return sContactCache.get(phoneNumber); return sContactCache.get(phoneNumber);
} }
String selection = CALLER_ID_SELECTION.replace("+", String selection = CALLER_ID_SELECTION.replace("+",
PhoneNumberUtils.toCallerIDMinMatch(phoneNumber)); PhoneNumberUtils.toCallerIDMinMatch(phoneNumber));
// 查找数据库中phoneNumber的信息
Cursor cursor = context.getContentResolver().query( Cursor cursor = context.getContentResolver().query(
Data.CONTENT_URI, Data.CONTENT_URI,
new String [] { Phone.DISPLAY_NAME }, new String [] { Phone.DISPLAY_NAME },
@ -54,17 +61,22 @@ public class Contact {
new String[] { phoneNumber }, new String[] { phoneNumber },
null); null);
// 判定查询结果
// moveToFirst()返回第一条
if (cursor != null && cursor.moveToFirst()) { if (cursor != null && cursor.moveToFirst()) {
try { try {
// 找到相关信息
String name = cursor.getString(0); String name = cursor.getString(0);
sContactCache.put(phoneNumber, name); sContactCache.put(phoneNumber, name);
return name; return name;
// 异常
} catch (IndexOutOfBoundsException e) { } catch (IndexOutOfBoundsException e) {
Log.e(TAG, " Cursor get string error " + e.toString()); Log.e(TAG, " Cursor get string error " + e.toString());
return null; return null;
} finally { } finally {
cursor.close(); cursor.close();
} }
// 未找到相关信息
} else { } else {
Log.d(TAG, "No contact matched with number:" + phoneNumber); Log.d(TAG, "No contact matched with number:" + phoneNumber);
return null; return null;

@ -16,10 +16,14 @@
package net.micode.notes.data; package net.micode.notes.data;
import android.content.ContentUris;
import android.net.Uri; import android.net.Uri;
// Notes 类中定义了很多常量这些常量大多是int型和string型
public class Notes { public class Notes {
public static final String AUTHORITY = "micode_notes"; public static final String AUTHORITY = "micode_notes";
public static final String TAG = "Notes"; public static final String TAG = "Notes";
//以下三个常量对NoteColumns.TYPE的值进行设置时会用到
public static final int TYPE_NOTE = 0; public static final int TYPE_NOTE = 0;
public static final int TYPE_FOLDER = 1; public static final int TYPE_FOLDER = 1;
public static final int TYPE_SYSTEM = 2; public static final int TYPE_SYSTEM = 2;
@ -35,12 +39,24 @@ public class Notes {
public static final int ID_CALL_RECORD_FOLDER = -2; public static final int ID_CALL_RECORD_FOLDER = -2;
public static final int ID_TRASH_FOLER = -3; public static final int ID_TRASH_FOLER = -3;
public static final String INTENT_EXTRA_ALERT_DATE = "net.micode.notes.alert_date"; public static final String INTENT_EXTRA_ALERT_DATE =
public static final String INTENT_EXTRA_BACKGROUND_ID = "net.micode.notes.background_color_id";
public static final String INTENT_EXTRA_WIDGET_ID = "net.micode.notes.widget_id"; "net.micode.notes.alert_date";
public static final String INTENT_EXTRA_WIDGET_TYPE = "net.micode.notes.widget_type"; public static final String INTENT_EXTRA_BACKGROUND_ID =
public static final String INTENT_EXTRA_FOLDER_ID = "net.micode.notes.folder_id";
public static final String INTENT_EXTRA_CALL_DATE = "net.micode.notes.call_date"; "net.micode.notes.background_color_id";
public static final String INTENT_EXTRA_WIDGET_ID =
"net.micode.notes.widget_id";
public static final String INTENT_EXTRA_WIDGET_TYPE =
"net.micode.notes.widget_type";
public static final String INTENT_EXTRA_FOLDER_ID =
"net.micode.notes.folder_id";
public static final String INTENT_EXTRA_CALL_DATE =
"net.micode.notes.call_date";
public static final int TYPE_WIDGET_INVALIDE = -1; public static final int TYPE_WIDGET_INVALIDE = -1;
public static final int TYPE_WIDGET_2X = 0; public static final int TYPE_WIDGET_2X = 0;
@ -54,13 +70,20 @@ public class Notes {
/** /**
* Uri to query all notes and folders * Uri to query all notes and folders
*/ */
public static final Uri CONTENT_NOTE_URI = Uri.parse("content://" + AUTHORITY + "/note"); public static final Uri CONTENT_NOTE_URI = Uri.parse("content://" +
AUTHORITY + "/note");//定义查询便签和文件夹的指针。
// public static final Uri my_URI = ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI , 10);
/** /**
* Uri to query data * Uri to query data
*/ */
public static final Uri CONTENT_DATA_URI = Uri.parse("content://" + AUTHORITY + "/data"); public static final Uri CONTENT_DATA_URI = Uri.parse("content://" +
AUTHORITY + "/data");//定义查找数据的指针。
// 定义NoteColumns的常量,用于后面创建数据库的表头
public interface NoteColumns { public interface NoteColumns {
/** /**
* The unique ID for a row * The unique ID for a row
@ -72,7 +95,7 @@ public class Notes {
* The parent's id for note or folder * The parent's id for note or folder
* <P> Type: INTEGER (long) </P> * <P> Type: INTEGER (long) </P>
*/ */
public static final String PARENT_ID = "parent_id"; public static final String PARENT_ID = "parent_id";//为什么会有parent_id
/** /**
* Created data for note or folder * Created data for note or folder
@ -140,7 +163,7 @@ public class Notes {
* The last sync id * The last sync id
* <P> Type: INTEGER (long) </P> * <P> Type: INTEGER (long) </P>
*/ */
public static final String SYNC_ID = "sync_id"; public static final String SYNC_ID = "sync_id";//同步
/** /**
* Sign to indicate local modified or not * Sign to indicate local modified or not
@ -165,8 +188,9 @@ public class Notes {
* <P> Type : INTEGER (long) </P> * <P> Type : INTEGER (long) </P>
*/ */
public static final String VERSION = "version"; public static final String VERSION = "version";
} }//这些常量主要是定义便签的属性的。
// 定义DataColumns的常量,用于后面创建数据库的表头
public interface DataColumns { public interface DataColumns {
/** /**
* The unique ID for a row * The unique ID for a row
@ -206,41 +230,45 @@ public class Notes {
/** /**
* Generic data column, the meaning is {@link #MIMETYPE} specific, used for * Generic data column, the meaning is {@link #MIMETYPE} specific,
used for
* integer data type * integer data type
* <P> Type: INTEGER </P> * <P> Type: INTEGER </P>
*/ */
public static final String DATA1 = "data1"; public static final String DATA1 = "data1";
/** /**
* Generic data column, the meaning is {@link #MIMETYPE} specific, used for * Generic data column, the meaning is {@link #MIMETYPE} specific,
used for
* integer data type * integer data type
* <P> Type: INTEGER </P> * <P> Type: INTEGER </P>
*/ */
public static final String DATA2 = "data2"; public static final String DATA2 = "data2";
/** /**
* Generic data column, the meaning is {@link #MIMETYPE} specific, used for * Generic data column, the meaning is {@link #MIMETYPE} specific,
used for
* TEXT data type * TEXT data type
* <P> Type: TEXT </P> * <P> Type: TEXT </P>
*/ */
public static final String DATA3 = "data3"; public static final String DATA3 = "data3";
/** /**
* Generic data column, the meaning is {@link #MIMETYPE} specific, used for * Generic data column, the meaning is {@link #MIMETYPE} specific,
used for
* TEXT data type * TEXT data type
* <P> Type: TEXT </P> * <P> Type: TEXT </P>
*/ */
public static final String DATA4 = "data4"; public static final String DATA4 = "data4";
/** /**
* Generic data column, the meaning is {@link #MIMETYPE} specific, used for * Generic data column, the meaning is {@link #MIMETYPE} specific,
used for
* TEXT data type * TEXT data type
* <P> Type: TEXT </P> * <P> Type: TEXT </P>
*/ */
public static final String DATA5 = "data5"; public static final String DATA5 = "data5";
} }//主要是定义存储便签内容数据的
public static final class TextNote implements DataColumns { public static final class TextNote implements DataColumns {
/** /**
* Mode to indicate the text in check list mode or not * Mode to indicate the text in check list mode or not
@ -250,12 +278,18 @@ public class Notes {
public static final int MODE_CHECK_LIST = 1; public static final int MODE_CHECK_LIST = 1;
public static final String CONTENT_TYPE = "vnd.android.cursor.dir/text_note"; public static final String CONTENT_TYPE =
public static final String CONTENT_ITEM_TYPE = "vnd.android.cursor.item/text_note"; "vnd.android.cursor.dir/text_note";
public static final Uri CONTENT_URI = Uri.parse("content://" + AUTHORITY + "/text_note"); public static final String CONTENT_ITEM_TYPE =
}
"vnd.android.cursor.item/text_note";
public static final Uri CONTENT_URI = Uri.parse("content://" +
AUTHORITY + "/text_note");
}//文本内容的数据结构
public static final class CallNote implements DataColumns { public static final class CallNote implements DataColumns {
/** /**
@ -270,10 +304,16 @@ public class Notes {
*/ */
public static final String PHONE_NUMBER = DATA3; public static final String PHONE_NUMBER = DATA3;
public static final String CONTENT_TYPE = "vnd.android.cursor.dir/call_note"; public static final String CONTENT_TYPE =
public static final String CONTENT_ITEM_TYPE = "vnd.android.cursor.item/call_note"; "vnd.android.cursor.dir/call_note";
public static final Uri CONTENT_URI = Uri.parse("content://" + AUTHORITY + "/call_note"); public static final String CONTENT_ITEM_TYPE =
}
"vnd.android.cursor.item/call_note";
public static final Uri CONTENT_URI = Uri.parse("content://" +
AUTHORITY + "/call_note");
}//电话内容的数据结构
} }

@ -16,23 +16,23 @@
package net.micode.notes.data; package net.micode.notes.data;
import android.content.ContentValues; import android.content.ContentValues;//就是用于保存一些数据string boolean byte double float int long short ...)信息,这些信息可以被数据库操作时使用。
import android.content.Context; import android.content.Context;//加载和访问资源。android中主要是这两个功能但是这里具体不清楚
import android.database.sqlite.SQLiteDatabase; import android.database.sqlite.SQLiteDatabase;//主要提供了对应于添加、删除、更新、查询的操作方法: insert()、delete()、update()和query()。配合content.values
import android.database.sqlite.SQLiteOpenHelper; import android.database.sqlite.SQLiteOpenHelper;//用来管理数据的创建和版本更新
import android.util.Log; import android.util.Log;
import net.micode.notes.data.Notes.DataColumns; import net.micode.notes.data.Notes.DataColumns;
import net.micode.notes.data.Notes.DataConstants; import net.micode.notes.data.Notes.DataConstants;
import net.micode.notes.data.Notes.NoteColumns; import net.micode.notes.data.Notes.NoteColumns;
//数据库操作用SQLOpenhelper,对一些note和文件进行数据库的操作比如删除文件后将文件里的note也相应删除
public class NotesDatabaseHelper extends SQLiteOpenHelper { public class NotesDatabaseHelper extends SQLiteOpenHelper {
private static final String DB_NAME = "note.db"; private static final String DB_NAME = "note.db";
private static final int DB_VERSION = 4; private static final int DB_VERSION = 4;
public interface TABLE { public interface TABLE { //接口分成note和data在后面的程序里分别使用过
public static final String NOTE = "note"; public static final String NOTE = "note";
public static final String DATA = "data"; public static final String DATA = "data";
@ -61,7 +61,7 @@ public class NotesDatabaseHelper extends SQLiteOpenHelper {
NoteColumns.ORIGIN_PARENT_ID + " INTEGER NOT NULL DEFAULT 0," + NoteColumns.ORIGIN_PARENT_ID + " INTEGER NOT NULL DEFAULT 0," +
NoteColumns.GTASK_ID + " TEXT NOT NULL DEFAULT ''," + NoteColumns.GTASK_ID + " TEXT NOT NULL DEFAULT ''," +
NoteColumns.VERSION + " INTEGER NOT NULL DEFAULT 0" + NoteColumns.VERSION + " INTEGER NOT NULL DEFAULT 0" +
")"; ")";//数据库中需要存储的项目的名称,就相当于创建一个表格的表头的内容。
private static final String CREATE_DATA_TABLE_SQL = private static final String CREATE_DATA_TABLE_SQL =
"CREATE TABLE " + TABLE.DATA + "(" + "CREATE TABLE " + TABLE.DATA + "(" +
@ -76,11 +76,11 @@ public class NotesDatabaseHelper extends SQLiteOpenHelper {
DataColumns.DATA3 + " TEXT NOT NULL DEFAULT ''," + DataColumns.DATA3 + " TEXT NOT NULL DEFAULT ''," +
DataColumns.DATA4 + " TEXT NOT NULL DEFAULT ''," + DataColumns.DATA4 + " TEXT NOT NULL DEFAULT ''," +
DataColumns.DATA5 + " TEXT NOT NULL DEFAULT ''" + DataColumns.DATA5 + " TEXT NOT NULL DEFAULT ''" +
")"; ")";//和上面的功能一样,主要是存储的项目不同
private static final String CREATE_DATA_NOTE_ID_INDEX_SQL = private static final String CREATE_DATA_NOTE_ID_INDEX_SQL =
"CREATE INDEX IF NOT EXISTS note_id_index ON " + "CREATE INDEX IF NOT EXISTS note_id_index ON " +
TABLE.DATA + "(" + DataColumns.NOTE_ID + ");"; TABLE.DATA + "(" + DataColumns.NOTE_ID + ");";//存储便签编号的一个数据表格
/** /**
* Increase folder's note count when move note to the folder * Increase folder's note count when move note to the folder
@ -92,7 +92,7 @@ public class NotesDatabaseHelper extends SQLiteOpenHelper {
" UPDATE " + TABLE.NOTE + " UPDATE " + TABLE.NOTE +
" SET " + NoteColumns.NOTES_COUNT + "=" + NoteColumns.NOTES_COUNT + " + 1" + " SET " + NoteColumns.NOTES_COUNT + "=" + NoteColumns.NOTES_COUNT + " + 1" +
" WHERE " + NoteColumns.ID + "=new." + NoteColumns.PARENT_ID + ";" + " WHERE " + NoteColumns.ID + "=new." + NoteColumns.PARENT_ID + ";" +
" END"; " END";//在文件夹中移入一个Note之后需要更改的数据的表格。
/** /**
* Decrease folder's note count when move note from folder * Decrease folder's note count when move note from folder
@ -105,7 +105,7 @@ public class NotesDatabaseHelper extends SQLiteOpenHelper {
" SET " + NoteColumns.NOTES_COUNT + "=" + NoteColumns.NOTES_COUNT + "-1" + " SET " + NoteColumns.NOTES_COUNT + "=" + NoteColumns.NOTES_COUNT + "-1" +
" WHERE " + NoteColumns.ID + "=old." + NoteColumns.PARENT_ID + " WHERE " + NoteColumns.ID + "=old." + NoteColumns.PARENT_ID +
" AND " + NoteColumns.NOTES_COUNT + ">0" + ";" + " AND " + NoteColumns.NOTES_COUNT + ">0" + ";" +
" END"; " END";//在文件夹中移出一个Note之后需要更改的数据的表格。
/** /**
* Increase folder's note count when insert new note to the folder * Increase folder's note count when insert new note to the folder
@ -117,7 +117,7 @@ public class NotesDatabaseHelper extends SQLiteOpenHelper {
" UPDATE " + TABLE.NOTE + " UPDATE " + TABLE.NOTE +
" SET " + NoteColumns.NOTES_COUNT + "=" + NoteColumns.NOTES_COUNT + " + 1" + " SET " + NoteColumns.NOTES_COUNT + "=" + NoteColumns.NOTES_COUNT + " + 1" +
" WHERE " + NoteColumns.ID + "=new." + NoteColumns.PARENT_ID + ";" + " WHERE " + NoteColumns.ID + "=new." + NoteColumns.PARENT_ID + ";" +
" END"; " END";//在文件夹中插入一个Note之后需要更改的数据的表格。
/** /**
* Decrease folder's note count when delete note from the folder * Decrease folder's note count when delete note from the folder
@ -130,7 +130,7 @@ public class NotesDatabaseHelper extends SQLiteOpenHelper {
" SET " + NoteColumns.NOTES_COUNT + "=" + NoteColumns.NOTES_COUNT + "-1" + " SET " + NoteColumns.NOTES_COUNT + "=" + NoteColumns.NOTES_COUNT + "-1" +
" WHERE " + NoteColumns.ID + "=old." + NoteColumns.PARENT_ID + " WHERE " + NoteColumns.ID + "=old." + NoteColumns.PARENT_ID +
" AND " + NoteColumns.NOTES_COUNT + ">0;" + " AND " + NoteColumns.NOTES_COUNT + ">0;" +
" END"; " END";//在文件夹中删除一个Note之后需要更改的数据的表格。
/** /**
* Update note's content when insert data with type {@link DataConstants#NOTE} * Update note's content when insert data with type {@link DataConstants#NOTE}
@ -143,7 +143,7 @@ public class NotesDatabaseHelper extends SQLiteOpenHelper {
" UPDATE " + TABLE.NOTE + " UPDATE " + TABLE.NOTE +
" SET " + NoteColumns.SNIPPET + "=new." + DataColumns.CONTENT + " SET " + NoteColumns.SNIPPET + "=new." + DataColumns.CONTENT +
" WHERE " + NoteColumns.ID + "=new." + DataColumns.NOTE_ID + ";" + " WHERE " + NoteColumns.ID + "=new." + DataColumns.NOTE_ID + ";" +
" END"; " END";//在文件夹中对一个Note导入新的数据之后需要更改的数据的表格。
/** /**
* Update note's content when data with {@link DataConstants#NOTE} type has changed * Update note's content when data with {@link DataConstants#NOTE} type has changed
@ -156,7 +156,7 @@ public class NotesDatabaseHelper extends SQLiteOpenHelper {
" UPDATE " + TABLE.NOTE + " UPDATE " + TABLE.NOTE +
" SET " + NoteColumns.SNIPPET + "=new." + DataColumns.CONTENT + " SET " + NoteColumns.SNIPPET + "=new." + DataColumns.CONTENT +
" WHERE " + NoteColumns.ID + "=new." + DataColumns.NOTE_ID + ";" + " WHERE " + NoteColumns.ID + "=new." + DataColumns.NOTE_ID + ";" +
" END"; " END";//Note数据被修改后需要更改的数据的表格。
/** /**
* Update note's content when data with {@link DataConstants#NOTE} type has deleted * Update note's content when data with {@link DataConstants#NOTE} type has deleted
@ -169,7 +169,7 @@ public class NotesDatabaseHelper extends SQLiteOpenHelper {
" UPDATE " + TABLE.NOTE + " UPDATE " + TABLE.NOTE +
" SET " + NoteColumns.SNIPPET + "=''" + " SET " + NoteColumns.SNIPPET + "=''" +
" WHERE " + NoteColumns.ID + "=old." + DataColumns.NOTE_ID + ";" + " WHERE " + NoteColumns.ID + "=old." + DataColumns.NOTE_ID + ";" +
" END"; " END";//Note数据被删除后需要更改的数据的表格。
/** /**
* Delete datas belong to note which has been deleted * Delete datas belong to note which has been deleted
@ -180,7 +180,7 @@ public class NotesDatabaseHelper extends SQLiteOpenHelper {
" BEGIN" + " BEGIN" +
" DELETE FROM " + TABLE.DATA + " DELETE FROM " + TABLE.DATA +
" WHERE " + DataColumns.NOTE_ID + "=old." + NoteColumns.ID + ";" + " WHERE " + DataColumns.NOTE_ID + "=old." + NoteColumns.ID + ";" +
" END"; " END";//删除已删除的便签的数据后需要更改的数据的表格。
/** /**
* Delete notes belong to folder which has been deleted * Delete notes belong to folder which has been deleted
@ -191,7 +191,7 @@ public class NotesDatabaseHelper extends SQLiteOpenHelper {
" BEGIN" + " BEGIN" +
" DELETE FROM " + TABLE.NOTE + " DELETE FROM " + TABLE.NOTE +
" WHERE " + NoteColumns.PARENT_ID + "=old." + NoteColumns.ID + ";" + " WHERE " + NoteColumns.PARENT_ID + "=old." + NoteColumns.ID + ";" +
" END"; " END";//删除已删除的文件夹的便签后需要更改的数据的表格。
/** /**
* Move notes belong to folder which has been moved to trash folder * Move notes belong to folder which has been moved to trash folder
@ -204,18 +204,18 @@ public class NotesDatabaseHelper extends SQLiteOpenHelper {
" UPDATE " + TABLE.NOTE + " UPDATE " + TABLE.NOTE +
" SET " + NoteColumns.PARENT_ID + "=" + Notes.ID_TRASH_FOLER + " SET " + NoteColumns.PARENT_ID + "=" + Notes.ID_TRASH_FOLER +
" WHERE " + NoteColumns.PARENT_ID + "=old." + NoteColumns.ID + ";" + " WHERE " + NoteColumns.PARENT_ID + "=old." + NoteColumns.ID + ";" +
" END"; " END";//还原垃圾桶中便签后需要更改的数据的表格。
public NotesDatabaseHelper(Context context) { public NotesDatabaseHelper(Context context) {
super(context, DB_NAME, null, DB_VERSION); super(context, DB_NAME, null, DB_VERSION);
} }//构造函数,传入数据库的名称和版本
public void createNoteTable(SQLiteDatabase db) { public void createNoteTable(SQLiteDatabase db) {
db.execSQL(CREATE_NOTE_TABLE_SQL); db.execSQL(CREATE_NOTE_TABLE_SQL);
reCreateNoteTableTriggers(db); reCreateNoteTableTriggers(db);
createSystemFolder(db); createSystemFolder(db);
Log.d(TAG, "note table has been created"); Log.d(TAG, "note table has been created");
} }//创建表格(用来存储标签属性)
private void reCreateNoteTableTriggers(SQLiteDatabase db) { private void reCreateNoteTableTriggers(SQLiteDatabase db) {
db.execSQL("DROP TRIGGER IF EXISTS increase_folder_count_on_update"); db.execSQL("DROP TRIGGER IF EXISTS increase_folder_count_on_update");
@ -233,7 +233,8 @@ public class NotesDatabaseHelper extends SQLiteOpenHelper {
db.execSQL(NOTE_INCREASE_FOLDER_COUNT_ON_INSERT_TRIGGER); db.execSQL(NOTE_INCREASE_FOLDER_COUNT_ON_INSERT_TRIGGER);
db.execSQL(FOLDER_DELETE_NOTES_ON_DELETE_TRIGGER); db.execSQL(FOLDER_DELETE_NOTES_ON_DELETE_TRIGGER);
db.execSQL(FOLDER_MOVE_NOTES_ON_TRASH_TRIGGER); db.execSQL(FOLDER_MOVE_NOTES_ON_TRASH_TRIGGER);
} }//execSQL是数据库操作的API主要是更改行为的SQL语句。
//在这里主要是用来重新创建上述定义的表格用的,先删除原来有的数据库的触发器再重新创建新的数据库
private void createSystemFolder(SQLiteDatabase db) { private void createSystemFolder(SQLiteDatabase db) {
ContentValues values = new ContentValues(); ContentValues values = new ContentValues();
@ -268,14 +269,14 @@ public class NotesDatabaseHelper extends SQLiteOpenHelper {
values.put(NoteColumns.ID, Notes.ID_TRASH_FOLER); values.put(NoteColumns.ID, Notes.ID_TRASH_FOLER);
values.put(NoteColumns.TYPE, Notes.TYPE_SYSTEM); values.put(NoteColumns.TYPE, Notes.TYPE_SYSTEM);
db.insert(TABLE.NOTE, null, values); db.insert(TABLE.NOTE, null, values);
} }//创建几个系统文件夹
public void createDataTable(SQLiteDatabase db) { public void createDataTable(SQLiteDatabase db) {
db.execSQL(CREATE_DATA_TABLE_SQL); db.execSQL(CREATE_DATA_TABLE_SQL);
reCreateDataTableTriggers(db); reCreateDataTableTriggers(db);
db.execSQL(CREATE_DATA_NOTE_ID_INDEX_SQL); db.execSQL(CREATE_DATA_NOTE_ID_INDEX_SQL);
Log.d(TAG, "data table has been created"); Log.d(TAG, "data table has been created");
} }//创建表格(用来存储标签内容)
private void reCreateDataTableTriggers(SQLiteDatabase db) { private void reCreateDataTableTriggers(SQLiteDatabase db) {
db.execSQL("DROP TRIGGER IF EXISTS update_note_content_on_insert"); db.execSQL("DROP TRIGGER IF EXISTS update_note_content_on_insert");
@ -285,20 +286,22 @@ public class NotesDatabaseHelper extends SQLiteOpenHelper {
db.execSQL(DATA_UPDATE_NOTE_CONTENT_ON_INSERT_TRIGGER); db.execSQL(DATA_UPDATE_NOTE_CONTENT_ON_INSERT_TRIGGER);
db.execSQL(DATA_UPDATE_NOTE_CONTENT_ON_UPDATE_TRIGGER); db.execSQL(DATA_UPDATE_NOTE_CONTENT_ON_UPDATE_TRIGGER);
db.execSQL(DATA_UPDATE_NOTE_CONTENT_ON_DELETE_TRIGGER); db.execSQL(DATA_UPDATE_NOTE_CONTENT_ON_DELETE_TRIGGER);
} }//同上面的execSQL
static synchronized NotesDatabaseHelper getInstance(Context context) { static synchronized NotesDatabaseHelper getInstance(Context context) {
if (mInstance == null) { if (mInstance == null) {
mInstance = new NotesDatabaseHelper(context); mInstance = new NotesDatabaseHelper(context);
} }
return mInstance; return mInstance;
} }//上网查是为解决同一时刻只能有一个线程执行.
//在写程序库代码时,有时有一个类需要被所有的其它类使用,
//但又要求这个类只能被实例化一次,是个服务类,定义一次,其它类使用同一个这个类的实例
@Override @Override
public void onCreate(SQLiteDatabase db) { public void onCreate(SQLiteDatabase db) {
createNoteTable(db); createNoteTable(db);
createDataTable(db); createDataTable(db);
} }//实现两个表格(上面创建的两个表格)
@Override @Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) { public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
@ -331,14 +334,14 @@ public class NotesDatabaseHelper extends SQLiteOpenHelper {
throw new IllegalStateException("Upgrade notes database to version " + newVersion throw new IllegalStateException("Upgrade notes database to version " + newVersion
+ "fails"); + "fails");
} }
} }//数据库版本的更新(数据库内容的更改)
private void upgradeToV2(SQLiteDatabase db) { private void upgradeToV2(SQLiteDatabase db) {
db.execSQL("DROP TABLE IF EXISTS " + TABLE.NOTE); db.execSQL("DROP TABLE IF EXISTS " + TABLE.NOTE);
db.execSQL("DROP TABLE IF EXISTS " + TABLE.DATA); db.execSQL("DROP TABLE IF EXISTS " + TABLE.DATA);
createNoteTable(db); createNoteTable(db);
createDataTable(db); createDataTable(db);
} }//更新到V2版本
private void upgradeToV3(SQLiteDatabase db) { private void upgradeToV3(SQLiteDatabase db) {
// drop unused triggers // drop unused triggers
@ -353,10 +356,10 @@ public class NotesDatabaseHelper extends SQLiteOpenHelper {
values.put(NoteColumns.ID, Notes.ID_TRASH_FOLER); values.put(NoteColumns.ID, Notes.ID_TRASH_FOLER);
values.put(NoteColumns.TYPE, Notes.TYPE_SYSTEM); values.put(NoteColumns.TYPE, Notes.TYPE_SYSTEM);
db.insert(TABLE.NOTE, null, values); db.insert(TABLE.NOTE, null, values);
} }//更新到V3版本
private void upgradeToV4(SQLiteDatabase db) { private void upgradeToV4(SQLiteDatabase db) {
db.execSQL("ALTER TABLE " + TABLE.NOTE + " ADD COLUMN " + NoteColumns.VERSION db.execSQL("ALTER TABLE " + TABLE.NOTE + " ADD COLUMN " + NoteColumns.VERSION
+ " INTEGER NOT NULL DEFAULT 0"); + " INTEGER NOT NULL DEFAULT 0");
} }//更新到V4版本
} }

@ -16,7 +16,6 @@
package net.micode.notes.data; package net.micode.notes.data;
import android.app.SearchManager; import android.app.SearchManager;
import android.content.ContentProvider; import android.content.ContentProvider;
import android.content.ContentUris; import android.content.ContentUris;
@ -33,9 +32,15 @@ import net.micode.notes.R;
import net.micode.notes.data.Notes.DataColumns; import net.micode.notes.data.Notes.DataColumns;
import net.micode.notes.data.Notes.NoteColumns; import net.micode.notes.data.Notes.NoteColumns;
import net.micode.notes.data.NotesDatabaseHelper.TABLE; import net.micode.notes.data.NotesDatabaseHelper.TABLE;
//为存储和获取数据提供接口。可以在不同的应用程序之间共享数据
//ContentProvider提供的方法
//query查询
//insert插入
//update更新
//delete删除
//getType得到数据类型
public class NotesProvider extends ContentProvider { public class NotesProvider extends ContentProvider {
// UriMatcher用于匹配Uri
private static final UriMatcher mMatcher; private static final UriMatcher mMatcher;
private NotesDatabaseHelper mHelper; private NotesDatabaseHelper mHelper;
@ -51,7 +56,9 @@ public class NotesProvider extends ContentProvider {
private static final int URI_SEARCH_SUGGEST = 6; private static final int URI_SEARCH_SUGGEST = 6;
static { static {
// 创建UriMatcher时调用UriMatcher(UriMatcher.NO_MATCH)表示不匹配任何路径的返回码
mMatcher = new UriMatcher(UriMatcher.NO_MATCH); mMatcher = new UriMatcher(UriMatcher.NO_MATCH);
// 把需要匹配Uri路径全部给注册上
mMatcher.addURI(Notes.AUTHORITY, "note", URI_NOTE); mMatcher.addURI(Notes.AUTHORITY, "note", URI_NOTE);
mMatcher.addURI(Notes.AUTHORITY, "note/#", URI_NOTE_ITEM); mMatcher.addURI(Notes.AUTHORITY, "note/#", URI_NOTE_ITEM);
mMatcher.addURI(Notes.AUTHORITY, "data", URI_DATA); mMatcher.addURI(Notes.AUTHORITY, "data", URI_DATA);
@ -65,6 +72,7 @@ public class NotesProvider extends ContentProvider {
* x'0A' represents the '\n' character in sqlite. For title and content in the search result, * x'0A' represents the '\n' character in sqlite. For title and content in the search result,
* we will trim '\n' and white space in order to show more information. * we will trim '\n' and white space in order to show more information.
*/ */
// 声明 NOTES_SEARCH_PROJECTION
private static final String NOTES_SEARCH_PROJECTION = NoteColumns.ID + "," private static final String NOTES_SEARCH_PROJECTION = NoteColumns.ID + ","
+ NoteColumns.ID + " AS " + SearchManager.SUGGEST_COLUMN_INTENT_EXTRA_DATA + "," + NoteColumns.ID + " AS " + SearchManager.SUGGEST_COLUMN_INTENT_EXTRA_DATA + ","
+ "TRIM(REPLACE(" + NoteColumns.SNIPPET + ", x'0A','')) AS " + SearchManager.SUGGEST_COLUMN_TEXT_1 + "," + "TRIM(REPLACE(" + NoteColumns.SNIPPET + ", x'0A','')) AS " + SearchManager.SUGGEST_COLUMN_TEXT_1 + ","
@ -72,7 +80,7 @@ public class NotesProvider extends ContentProvider {
+ R.drawable.search_result + " AS " + SearchManager.SUGGEST_COLUMN_ICON_1 + "," + R.drawable.search_result + " AS " + SearchManager.SUGGEST_COLUMN_ICON_1 + ","
+ "'" + Intent.ACTION_VIEW + "' AS " + SearchManager.SUGGEST_COLUMN_INTENT_ACTION + "," + "'" + Intent.ACTION_VIEW + "' AS " + SearchManager.SUGGEST_COLUMN_INTENT_ACTION + ","
+ "'" + Notes.TextNote.CONTENT_TYPE + "' AS " + SearchManager.SUGGEST_COLUMN_INTENT_DATA; + "'" + Notes.TextNote.CONTENT_TYPE + "' AS " + SearchManager.SUGGEST_COLUMN_INTENT_DATA;
// 声明NOTES_SNIPPET_SEARCH_QUERY
private static String NOTES_SNIPPET_SEARCH_QUERY = "SELECT " + NOTES_SEARCH_PROJECTION private static String NOTES_SNIPPET_SEARCH_QUERY = "SELECT " + NOTES_SEARCH_PROJECTION
+ " FROM " + TABLE.NOTE + " FROM " + TABLE.NOTE
+ " WHERE " + NoteColumns.SNIPPET + " LIKE ?" + " WHERE " + NoteColumns.SNIPPET + " LIKE ?"
@ -80,18 +88,24 @@ public class NotesProvider extends ContentProvider {
+ " AND " + NoteColumns.TYPE + "=" + Notes.TYPE_NOTE; + " AND " + NoteColumns.TYPE + "=" + Notes.TYPE_NOTE;
@Override @Override
// Context只有在onCreate()中才被初始化
// 对mHelper进行实例化
public boolean onCreate() { public boolean onCreate() {
mHelper = NotesDatabaseHelper.getInstance(getContext()); mHelper = NotesDatabaseHelper.getInstance(getContext());
return true; return true;
} }
@Override @Override
// 查询uri在数据库中对应的位置
public Cursor query(Uri uri, String[] projection, String selection, String[] selectionArgs, public Cursor query(Uri uri, String[] projection, String selection, String[] selectionArgs,
String sortOrder) { String sortOrder) {
Cursor c = null; Cursor c = null;
// 获取可读数据库
SQLiteDatabase db = mHelper.getReadableDatabase(); SQLiteDatabase db = mHelper.getReadableDatabase();
String id = null; String id = null;
// 匹配查找uri
switch (mMatcher.match(uri)) { switch (mMatcher.match(uri)) {
// 对于不同的匹配值,在数据库中查找相应的条目
case URI_NOTE: case URI_NOTE:
c = db.query(TABLE.NOTE, projection, selection, selectionArgs, null, null, c = db.query(TABLE.NOTE, projection, selection, selectionArgs, null, null,
sortOrder); sortOrder);
@ -113,6 +127,7 @@ public class NotesProvider extends ContentProvider {
case URI_SEARCH: case URI_SEARCH:
case URI_SEARCH_SUGGEST: case URI_SEARCH_SUGGEST:
if (sortOrder != null || projection != null) { if (sortOrder != null || projection != null) {
// 不合法的参数异常
throw new IllegalArgumentException( throw new IllegalArgumentException(
"do not specify sortOrder, selection, selectionArgs, or projection" + "with this query"); "do not specify sortOrder, selection, selectionArgs, or projection" + "with this query");
} }
@ -120,6 +135,8 @@ public class NotesProvider extends ContentProvider {
String searchString = null; String searchString = null;
if (mMatcher.match(uri) == URI_SEARCH_SUGGEST) { if (mMatcher.match(uri) == URI_SEARCH_SUGGEST) {
if (uri.getPathSegments().size() > 1) { if (uri.getPathSegments().size() > 1) {
// getPathSegments()方法得到一个String的List
// 在uri.getPathSegments().get(1)为第2个元素
searchString = uri.getPathSegments().get(1); searchString = uri.getPathSegments().get(1);
} }
} else { } else {
@ -139,6 +156,7 @@ public class NotesProvider extends ContentProvider {
} }
break; break;
default: default:
// 抛出异常
throw new IllegalArgumentException("Unknown URI " + uri); throw new IllegalArgumentException("Unknown URI " + uri);
} }
if (c != null) { if (c != null) {
@ -148,13 +166,17 @@ public class NotesProvider extends ContentProvider {
} }
@Override @Override
// 插入一个uri
public Uri insert(Uri uri, ContentValues values) { public Uri insert(Uri uri, ContentValues values) {
// 获得可写的数据库
SQLiteDatabase db = mHelper.getWritableDatabase(); SQLiteDatabase db = mHelper.getWritableDatabase();
long dataId = 0, noteId = 0, insertedId = 0; long dataId = 0, noteId = 0, insertedId = 0;
switch (mMatcher.match(uri)) { switch (mMatcher.match(uri)) {
// 新增一个条目
case URI_NOTE: case URI_NOTE:
insertedId = noteId = db.insert(TABLE.NOTE, null, values); insertedId = noteId = db.insert(TABLE.NOTE, null, values);
break; break;
// 如果存在查找NOTE_ID
case URI_DATA: case URI_DATA:
if (values.containsKey(DataColumns.NOTE_ID)) { if (values.containsKey(DataColumns.NOTE_ID)) {
noteId = values.getAsLong(DataColumns.NOTE_ID); noteId = values.getAsLong(DataColumns.NOTE_ID);
@ -167,6 +189,7 @@ public class NotesProvider extends ContentProvider {
throw new IllegalArgumentException("Unknown URI " + uri); throw new IllegalArgumentException("Unknown URI " + uri);
} }
// Notify the note uri // Notify the note uri
// notifyChange获得一个ContextResolver对象并且更新里面的内容
if (noteId > 0) { if (noteId > 0) {
getContext().getContentResolver().notifyChange( getContext().getContentResolver().notifyChange(
ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, noteId), null); ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, noteId), null);
@ -178,13 +201,17 @@ public class NotesProvider extends ContentProvider {
ContentUris.withAppendedId(Notes.CONTENT_DATA_URI, dataId), null); ContentUris.withAppendedId(Notes.CONTENT_DATA_URI, dataId), null);
} }
// 返回插入的uri的路径
return ContentUris.withAppendedId(uri, insertedId); return ContentUris.withAppendedId(uri, insertedId);
} }
@Override @Override
// 删除一个uri
public int delete(Uri uri, String selection, String[] selectionArgs) { public int delete(Uri uri, String selection, String[] selectionArgs) {
//Uri代表要操作的数据Android上可用的每种资源 -包括 图像、视频片段、音频资源等都可以用Uri来表示。
int count = 0; int count = 0;
String id = null; String id = null;
// 获得可写的数据库
SQLiteDatabase db = mHelper.getWritableDatabase(); SQLiteDatabase db = mHelper.getWritableDatabase();
boolean deleteData = false; boolean deleteData = false;
switch (mMatcher.match(uri)) { switch (mMatcher.match(uri)) {
@ -228,6 +255,7 @@ public class NotesProvider extends ContentProvider {
} }
@Override @Override
// 更新一个uri
public int update(Uri uri, ContentValues values, String selection, String[] selectionArgs) { public int update(Uri uri, ContentValues values, String selection, String[] selectionArgs) {
int count = 0; int count = 0;
String id = null; String id = null;
@ -267,10 +295,12 @@ public class NotesProvider extends ContentProvider {
return count; return count;
} }
// 将字符串解析成规定格式
private String parseSelection(String selection) { private String parseSelection(String selection) {
return (!TextUtils.isEmpty(selection) ? " AND (" + selection + ')' : ""); return (!TextUtils.isEmpty(selection) ? " AND (" + selection + ')' : "");
} }
//增加一个noteVersion
private void increaseNoteVersion(long id, String selection, String[] selectionArgs) { private void increaseNoteVersion(long id, String selection, String[] selectionArgs) {
StringBuilder sql = new StringBuilder(120); StringBuilder sql = new StringBuilder(120);
sql.append("UPDATE "); sql.append("UPDATE ");
@ -293,6 +323,7 @@ public class NotesProvider extends ContentProvider {
sql.append(selectString); sql.append(selectString);
} }
// execSQL()方法可以执行insert、delete、update和CREATE TABLE之类有更改行为的SQL语句
mHelper.getWritableDatabase().execSQL(sql.toString()); mHelper.getWritableDatabase().execSQL(sql.toString());
} }

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