|
|
|
|
|
/*
|
|
|
|
|
|
* 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.
|
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
|
|
// 声明包名
|
|
|
|
|
|
package net.micode.notes.ui;
|
|
|
|
|
|
|
|
|
|
|
|
// 导入所需的Android和自定义类
|
|
|
|
|
|
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;
|
|
|
|
|
|
|
|
|
|
|
|
// 定义一个继承自BroadcastReceiver的类，用于初始化闹钟
|
|
|
|
|
|
public class AlarmInitReceiver extends BroadcastReceiver {
|
|
|
|
|
|
|
|
|
|
|
|
// 定义查询数据库时需要的列
|
|
|
|
|
|
private static final String [] PROJECTION = new String [] {
|
|
|
|
|
|
NoteColumns.ID, // 笔记的ID
|
|
|
|
|
|
NoteColumns.ALERTED_DATE // 笔记的提醒日期
|
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
|
|
// 定义列索引，用于从Cursor中获取数据
|
|
|
|
|
|
private static final int COLUMN_ID = 0; // ID列的索引
|
|
|
|
|
|
private static final int COLUMN_ALERTED_DATE = 1; // 提醒日期列的索引
|
|
|
|
|
|
|
|
|
|
|
|
// 当接收到广播时调用此方法
|
|
|
|
|
|
@Override
|
|
|
|
|
|
public void onReceive(Context context, Intent intent) {
|
|
|
|
|
|
long currentDate = System.currentTimeMillis(); // 获取当前时间
|
|
|
|
|
|
// 从内容提供者中查询需要提醒的笔记，条件是提醒日期大于当前时间且笔记类型为普通笔记
|
|
|
|
|
|
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()) { // 移动到查询结果的第一条记录
|
|
|
|
|
|
do {
|
|
|
|
|
|
long alertDate = c.getLong(COLUMN_ALERTED_DATE); // 获取提醒日期
|
|
|
|
|
|
// 创建一个Intent，用于在提醒时间到达时广播
|
|
|
|
|
|
Intent sender = new Intent(context, AlarmReceiver.class);
|
|
|
|
|
|
// 设置Intent的URI，包含笔记的ID
|
|
|
|
|
|
sender.setData(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, c.getLong(COLUMN_ID)));
|
|
|
|
|
|
// 创建一个PendingIntent，用于AlarmManager在提醒时间到达时启动
|
|
|
|
|
|
PendingIntent pendingIntent = PendingIntent.getBroadcast(context, 0, sender, 0);
|
|
|
|
|
|
// 获取AlarmManager服务
|
|
|
|
|
|
AlarmManager alermManager = (AlarmManager) context
|
|
|
|
|
|
.getSystemService(Context.ALARM_SERVICE);
|
|
|
|
|
|
// 设置闹钟，在提醒时间到达时广播Intent
|
|
|
|
|
|
alermManager.set(AlarmManager.RTC_WAKEUP, alertDate, pendingIntent);
|
|
|
|
|
|
} while (c.moveToNext()); // 处理查询结果中的下一条记录
|
|
|
|
|
|
}
|
|
|
|
|
|
c.close(); // 关闭Cursor
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
