|
|
/*
|
|
|
* 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;
|
|
|
|
|
|
|
|
|
/**
|
|
|
* 闹钟初始化广播接收器
|
|
|
* <p>
|
|
|
* 该广播接收器负责在系统启动时重新注册所有未触发的笔记闹钟。
|
|
|
* 当系统重启后，之前设置的闹钟会丢失，需要通过该接收器重新初始化
|
|
|
* </p>
|
|
|
*/
|
|
|
public class AlarmInitReceiver extends BroadcastReceiver {
|
|
|
/**
|
|
|
* 闹钟数据查询的投影列数组
|
|
|
* <p>
|
|
|
* 定义了从数据库查询笔记闹钟数据时需要获取的列，包括笔记ID和闹钟触发日期
|
|
|
* </p>
|
|
|
*/
|
|
|
private static final String [] PROJECTION = new String [] {
|
|
|
NoteColumns.ID,
|
|
|
NoteColumns.ALERTED_DATE
|
|
|
};
|
|
|
|
|
|
/**
|
|
|
* 查询结果中笔记ID列的索引
|
|
|
*/
|
|
|
private static final int COLUMN_ID = 0;
|
|
|
|
|
|
/**
|
|
|
* 查询结果中闹钟触发日期列的索引
|
|
|
*/
|
|
|
private static final int COLUMN_ALERTED_DATE = 1;
|
|
|
|
|
|
/**
|
|
|
* 接收广播时调用的方法
|
|
|
* <p>
|
|
|
* 当系统发送广播时（通常是系统启动完成），该方法会查询所有设置了未来闹钟的笔记，
|
|
|
* 并使用AlarmManager重新注册这些闹钟
|
|
|
* </p>
|
|
|
* @param context 上下文对象
|
|
|
* @param intent 接收到的广播意图
|
|
|
*/
|
|
|
@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();
|
|
|
}
|
|
|
}
|
|
|
}
|
