|
|
/*
|
|
|
* 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;
|
|
|
|
|
|
// 导入Android系统服务相关
|
|
|
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;
|
|
|
|
|
|
// 导入项目数据模型和常量
|
|
|
import net.micode.notes.data.Notes;
|
|
|
import net.micode.notes.data.Notes.NoteColumns;
|
|
|
|
|
|
/**
|
|
|
* 闹钟初始化广播接收器 - 用于在系统启动或时间变更时重新设置所有未触发的便签提醒
|
|
|
* 继承自BroadcastReceiver，监听系统广播事件
|
|
|
*/
|
|
|
public class AlarmInitReceiver extends BroadcastReceiver {
|
|
|
|
|
|
// 数据库查询投影列（需要查询的字段）
|
|
|
private static final String [] PROJECTION = new String [] {
|
|
|
NoteColumns.ID, // 便签ID列
|
|
|
NoteColumns.ALERTED_DATE // 提醒时间列
|
|
|
};
|
|
|
|
|
|
// 列索引常量
|
|
|
private static final int COLUMN_ID = 0; // ID列的索引
|
|
|
private static final int COLUMN_ALERTED_DATE = 1; // 提醒时间列的索引
|
|
|
|
|
|
@Override
|
|
|
public void onReceive(Context context, Intent intent) {
|
|
|
long currentDate = System.currentTimeMillis(); // 获取当前系统时间
|
|
|
|
|
|
// 查询内容提供者获取需要设置提醒的便签
|
|
|
Cursor c = context.getContentResolver().query(
|
|
|
Notes.CONTENT_NOTE_URI, // 便签内容URI
|
|
|
PROJECTION, // 需要查询的列
|
|
|
NoteColumns.ALERTED_DATE + ">? AND " + NoteColumns.TYPE + "=" + Notes.TYPE_NOTE, // 筛选条件：提醒时间未过期且类型为普通便签
|
|
|
new String[] { String.valueOf(currentDate) }, // 当前时间作为筛选参数
|
|
|
null); // 排序方式（无）
|
|
|
|
|
|
if (c != null) {
|
|
|
if (c.moveToFirst()) { // 游标移动到第一条记录
|
|
|
do {
|
|
|
long alertDate = c.getLong(COLUMN_ALERTED_DATE); // 获取提醒时间
|
|
|
|
|
|
// 创建发送给AlarmReceiver的Intent
|
|
|
Intent sender = new Intent(context, AlarmReceiver.class);
|
|
|
// 设置数据URI：Note内容URI + 当前便签ID
|
|
|
sender.setData(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, c.getLong(COLUMN_ID)));
|
|
|
|
|
|
// 创建PendingIntent（延迟触发的广播）
|
|
|
PendingIntent pendingIntent = PendingIntent.getBroadcast(context, 0, sender, 0);
|
|
|
|
|
|
// 获取系统闹钟服务
|
|
|
AlarmManager alarmManager = (AlarmManager) context
|
|
|
.getSystemService(Context.ALARM_SERVICE);
|
|
|
// 设置精确闹钟（RTC_WAKEUP会在指定时间唤醒设备）
|
|
|
alarmManager.set(AlarmManager.RTC_WAKEUP, alertDate, pendingIntent);
|
|
|
} while (c.moveToNext()); // 循环处理下一条记录
|
|
|
}
|
|
|
c.close(); // 关闭游标释放资源
|
|
|
}
|
|
|
}
|
|
|
} |
