本文介绍了AlarmManager.setExact()在错误的时间开始?的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

问题描述

我安排的PendingIntent,以在5秒内被发送,但23秒开始。 API = 19(AlarmManager.setExact(...)):

  16 10-23:43:44.638 11903-11903 /? D / MainActivity:周五10月23日十六时43分44秒GMT + 05:00 2015年:计划在5000毫秒
10-23 16:44:07.728 11903-11903 /? D / MainActivity:周五10月23日16时44分07秒GMT + 05:00 2015:解雇私人的PendingIntent的PendingIntent;
    私人诠释SCHEDULE_REQUEST_ code = 1;
    私有静态最后弦乐SCHEDULER_ACTION =android.intent.action.FOTA_SCHEDULE_CHECK;    私人无效日志(字符串消息){
        StringBuilder的SB =新的StringBuilder();
        (。新的日期()的toString())sb.append;
        sb.append(:);
        sb.append(消息);
        sb.append(\\ n);        Log.d(的getClass()getSimpleName(),sb.toString());
        tv.append(sb.toString());        tv.append(\\ n);
    }    私人广播接收器schedulerReceiver =新的广播接收器(){
        @覆盖
        公共无效的onReceive(上下文的背景下,意图意图){
            日志(炒鱿鱼);
        }
    };    私人无效时间表(){
        registerReceiver(schedulerReceiver,新的IntentFilter(SCHEDULER_ACTION));        意图scheduleIntent =新意图(SCHEDULER_ACTION);
        的PendingIntent = PendingIntent.getBroadcast(这一点,SCHEDULE_REQUEST_ code,scheduleIntent,0);        AlarmManager alarmManager =(AlarmManager)this.getSystemService(Context.ALARM_SERVICE);        //第一次调用(一次,确切)
        INT延迟= 5 * 1000; // 5S
        日志(预定+延迟+毫秒);
        alarmManager.setExact(AlarmManager.RTC,System.currentTimeMillis的()+延迟的PendingIntent);
    }    @覆盖
    保护无效的onDestroy(){
        super.onDestroy();        取消调度();
    }    私人无效取消调度(){
        AlarmManager alarmManager =(AlarmManager)getSystemService(Context.ALARM_SERVICE);
        alarmManager.cancel(的PendingIntent);        的PendingIntent = NULL;        unregisterReceiver(schedulerReceiver);
    }


解决方案

我心中已经得到了同样的问题,但的PendingIntent 5秒后开始,而不是2,因为我尝试设置。

  alarmManager.setExact(AlarmManager.RTC_WAKEUP,System.currentTimeMillis的()+ 2 * 1000,pIntent);

如果我设置在5秒多, alarmManager 开始完全吻合。我不知道是什么inexatly时间我会在生产环境中得到的,所以我选1纪录如短的时间间隔。

所以,用我的应用程序 postDelayed()而不是 AlarmManager 在很短的时间间隔,而 AlarmManager 长。

code样品:

 如果(延迟== 0){
    意向意图=新意图(背景下,SoundService.class);
    intent.putExtra(SoundService.SOUND,声音);
    context.startService(意向);
}否则如果(延迟< = 60){
    (新的处理程序())。postDelayed(新的Runnable(){
        @覆盖
        公共无效的run(){
            意向意图=新意图(背景下,SoundService.class);
            intent.putExtra(SoundService.SOUND,声音);
            context.startService(意向);
        }
    },延迟* 1000);
}否则如果(延迟→60){
    最终诠释SDK_INT = Build.VERSION.SDK_INT;
    意向意图=新意图(背景下,AlarmBroadcastReceiver.class);
    intent.setAction(action_play:+声音);
    intent.putExtra(SoundService.SOUND,声音);
    的PendingIntent pIntent = PendingIntent.getBroadcast(上下文,0,意图,0);
    AlarmManager alarmManager =(AlarmManager)context.getSystemService(Context.ALARM_SERVICE);
    长运行时间= System.currentTimeMillis的()+延迟* 1000;
    如果(SDK_INT< Build.VERSION_ codeS.KITKAT){
        alarmManager.set(AlarmManager.RTC_WAKEUP,运行时pIntent);
    }否则如果((SDK_INT> = Build.VERSION_ codeS.KITKAT)及及(SDK_INT< Build.VERSION_ codeS.M)){
        alarmManager.setExact(AlarmManager.RTC_WAKEUP,运行时pIntent);
    }否则如果(SDK_INT> = Build.VERSION_ codeS.M){
        alarmManager.setExactAndAllowWhileIdle(AlarmManager.RTC_WAKEUP,运行时pIntent);
    }
}

其中, SoundService - 服务与完善的功能发挥,
延迟 - 播放前的延迟,以秒为单位,
AlarmBroadcastReceiver -

 公共类AlarmBroadcastReceiver扩展广播接收器{
最后弦乐LOG_TAG = this.getClass()的getName()。@覆盖
公共无效的onReceive(上下文CTX,意图意图){
    如果(intent.getAction()startsWith(action_play:)){
        意图playIntent =新意图(CTX,SoundService.class);
        playIntent.putExtra(SoundService.SOUND,intent.getStringExtra(SoundService.SOUND));
        ctx.startService(playIntent);
    }
}

}

I schedule pendingIntent to be sent in 5 seconds, but it starts in 23 seconds. API=19 (AlarmManager.setExact(...)):

10-23 16:43:44.638  11903-11903/? D/MainActivity﹕ Fri Oct 23 16:43:44 GMT+05:00 2015: scheduled in 5000 ms
10-23 16:44:07.728  11903-11903/? D/MainActivity﹕ Fri Oct 23 16:44:07 GMT+05:00 2015: fired

private PendingIntent pendingIntent;
    private int SCHEDULE_REQUEST_CODE = 1;
    private static final String SCHEDULER_ACTION = "android.intent.action.FOTA_SCHEDULE_CHECK";

    private void log(String message) {
        StringBuilder sb = new StringBuilder();
        sb.append(new Date().toString());
        sb.append(": ");
        sb.append(message);
        sb.append("\n");

        Log.d(getClass().getSimpleName(), sb.toString());
        tv.append(sb.toString());

        tv.append("\n");
    }

    private BroadcastReceiver schedulerReceiver = new BroadcastReceiver() {
        @Override
        public void onReceive(Context context, Intent intent) {
            log("fired");
        }
    };

    private void schedule() {
        registerReceiver(schedulerReceiver, new IntentFilter(SCHEDULER_ACTION));

        Intent scheduleIntent = new Intent(SCHEDULER_ACTION);
        pendingIntent = PendingIntent.getBroadcast(this, SCHEDULE_REQUEST_CODE, scheduleIntent, 0);

        AlarmManager alarmManager = (AlarmManager) this.getSystemService(Context.ALARM_SERVICE);

        // first invocation (once, exact)
        int delay = 5 * 1000; // 5s
        log("scheduled in " + delay + " ms");
        alarmManager.setExact(AlarmManager.RTC, System.currentTimeMillis() + delay, pendingIntent);
    }

    @Override
    protected void onDestroy() {
        super.onDestroy();

        unschedule();
    }

    private void unschedule() {
        AlarmManager alarmManager = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
        alarmManager.cancel(pendingIntent);

        pendingIntent = null;

        unregisterReceiver(schedulerReceiver);
    }
解决方案

I'v got the same problem, but pendingIntent start after 5 seconds, not 2 as i try to set.

alarmManager.setExact(AlarmManager.RTC_WAKEUP, System.currentTimeMillis() + 2 * 1000, pIntent);

If i set 5 seconds and more, alarmManager starts exactly. I don't know what inexatly interval i'll get in production environment, so i choose 1 minute as short time interval.

So, my app used postDelayed() instead of AlarmManager for the short time intervals, and AlarmManager for long.

Code sample:

if (delay == 0) {
    Intent intent = new Intent(context, SoundService.class);
    intent.putExtra(SoundService.SOUND, sound);
    context.startService(intent);
} else if (delay <= 60) {
    (new Handler()).postDelayed(new Runnable() {
        @Override
        public void run() {
            Intent intent = new Intent(context, SoundService.class);
            intent.putExtra(SoundService.SOUND, sound);
            context.startService(intent);
        }
    }, delay * 1000);
} else if (delay > 60) {
    final int SDK_INT = Build.VERSION.SDK_INT;
    Intent intent = new Intent(context, AlarmBroadcastReceiver.class);
    intent.setAction("action_play: " + sound);
    intent.putExtra(SoundService.SOUND, sound);
    PendingIntent pIntent = PendingIntent.getBroadcast(context, 0, intent, 0);
    AlarmManager alarmManager = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);
    long runTime = System.currentTimeMillis() + delay * 1000;
    if (SDK_INT < Build.VERSION_CODES.KITKAT) {
        alarmManager.set(AlarmManager.RTC_WAKEUP, runTime, pIntent);
    } else if ((SDK_INT >= Build.VERSION_CODES.KITKAT) && (SDK_INT < Build.VERSION_CODES.M)) {
        alarmManager.setExact(AlarmManager.RTC_WAKEUP, runTime, pIntent);
    } else if (SDK_INT >= Build.VERSION_CODES.M) {
        alarmManager.setExactAndAllowWhileIdle(AlarmManager.RTC_WAKEUP, runTime, pIntent);
    }
}

Where SoundService - Service with sound playing functionality,delay - delay before playing, in seconds,AlarmBroadcastReceiver -

public class AlarmBroadcastReceiver extends BroadcastReceiver {
final String LOG_TAG = this.getClass().getName();

@Override
public void onReceive(Context ctx, Intent intent) {
    if (intent.getAction().startsWith("action_play:")){
        Intent playIntent = new Intent(ctx, SoundService.class);
        playIntent.putExtra(SoundService.SOUND, intent.getStringExtra(SoundService.SOUND));
        ctx.startService(playIntent);
    }
}

}

这篇关于AlarmManager.setExact()在错误的时间开始?的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!

10-10 04:08