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@ -28,37 +28,62 @@ import net.micode.notes.data.Notes;
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import net.micode.notes.data.Notes.NoteColumns;
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/**
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* 闹钟初始化广播接收器,用于设置未来提醒的笔记闹钟
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*/
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public class AlarmInitReceiver extends BroadcastReceiver {
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// 查询笔记时需要的列名数组
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private static final String [] PROJECTION = new String [] {
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NoteColumns.ID,
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NoteColumns.ALERTED_DATE
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NoteColumns.ID, // 笔记ID列
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NoteColumns.ALERTED_DATE // 提醒日期列
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};
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private static final int COLUMN_ID = 0;
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private static final int COLUMN_ALERTED_DATE = 1;
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// 列索引常量
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private static final int COLUMN_ID = 0; // ID列的索引
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private static final int COLUMN_ALERTED_DATE = 1; // 提醒日期列的索引
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/**
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* 接收广播时触发的方法
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* @param context 上下文对象
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* @param intent 接收到的意图
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*/
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@Override
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public void onReceive(Context context, Intent intent) {
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// 获取当前系统时间
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long currentDate = System.currentTimeMillis();
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Cursor c = context.getContentResolver().query(Notes.CONTENT_NOTE_URI,
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PROJECTION,
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NoteColumns.ALERTED_DATE + ">? AND " + NoteColumns.TYPE + "=" + Notes.TYPE_NOTE,
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new String[] { String.valueOf(currentDate) },
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null);
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// 查询内容提供器获取需要设置提醒的笔记
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Cursor c = context.getContentResolver().query(
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Notes.CONTENT_NOTE_URI, // 笔记内容URI
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PROJECTION, // 要查询的列
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NoteColumns.ALERTED_DATE + ">? AND " + NoteColumns.TYPE + "=" + Notes.TYPE_NOTE, // 查询条件:提醒日期大于当前时间且类型为普通笔记
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new String[] { String.valueOf(currentDate) }, // 查询参数
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null); // 排序方式
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if (c != null) {
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// 如果有查询结果
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if (c.moveToFirst()) {
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do {
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// 获取提醒日期
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long alertDate = c.getLong(COLUMN_ALERTED_DATE);
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// 创建闹钟接收器Intent
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Intent sender = new Intent(context, AlarmReceiver.class);
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// 设置Intent的数据URI(包含笔记ID)
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sender.setData(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, c.getLong(COLUMN_ID)));
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// 创建PendingIntent
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PendingIntent pendingIntent = PendingIntent.getBroadcast(context, 0, sender, 0);
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AlarmManager alermManager = (AlarmManager) context
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// 获取AlarmManager服务
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AlarmManager alarmManager = (AlarmManager) context
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.getSystemService(Context.ALARM_SERVICE);
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alermManager.set(AlarmManager.RTC_WAKEUP, alertDate, pendingIntent);
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} while (c.moveToNext());
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// 设置闹钟,在指定时间触发
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alarmManager.set(AlarmManager.RTC_WAKEUP, alertDate, pendingIntent);
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} while (c.moveToNext()); // 处理下一条记录
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}
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// 关闭Cursor
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c.close();
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}
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}
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