Android 使用AlarmManager设置定时任务

最近在做的项目里面需要定时操作的任务,开始的方案是企图在后台跑一个service然后不停的判断时间来时间.写着写着知道了安卓系统自带有定时的功能,顿时感觉自己的方法low爆了. 还是一边研究一边把步骤记录下来吧.

Alarm类型

RTC_WAKEUP 指定的时间激活PendingIntent并唤醒设备
RTC 指定的时间激活PendingIntent
ELAPSED_REALTIME 一段时间之后激活PendingIntent
ELAPSED_REALTIME_WAKEUP 一段时间之后激活PendingIntent并唤醒设备

设置BroadcastReceiver

public class ScheduleReceiver  extends BroadcastReceiver {
    @Override
    public void onReceive(Context context, Intent intent) {
        Log.d("ErikaNote", "TestReceiver is called");
    }
}

AndroidMenifest.xml添加

    <receiver android:name=".receiver.ScheduleReceiver">
        <intent-filter>
            <action android:name="com.ai.android.intents.testbc" />
        </intent-filter>
    </receiver>
...
</application>

设置Alarm

Calendar cal = CommonUtils.getTimeAfterInSecs(10);
Intent intent =  new Intent(DevActivity.this, ScheduleReceiver.class);
PendingIntent pendingIntent = PendingIntent.getBroadcast(DevActivity.this, 1, intent, PendingIntent.FLAG_ONE_SHOT);
AlarmManager alarmManager = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
alarmManager.set(AlarmManager.RTC,
        cal.getTimeInMillis(),
        pendingIntent);