Question

所以我正在做这个项目，在确定的时间，手机将自动进入静音模式（没有声音），这里有人建议我使用WakefulBroadcastReciever。我试着在这里查找一些关于它如何工作的旧主题，并尝试在我的代码上实现它，但无论我做什么，它都不会在确定的时间开始。有人能帮我吗？以下是代码，其中hourStart和minuteStart由用户先前确定：

public void alarm(){

    Calendar cur_cal = new GregorianCalendar();
    cur_cal.setTimeInMillis(System.currentTimeMillis());//set the current time and date for this calendar
    Calendar cal = new GregorianCalendar();
    cal.add(Calendar.DAY_OF_YEAR, cur_cal.get(Calendar.DAY_OF_YEAR));
    cal.set(Calendar.HOUR_OF_DAY, hourStart);
    cal.set(Calendar.MINUTE, minuteStart);
    Log.d("calendartimeValue", String.valueOf(cal.getTimeInMillis()));
    cal.set(Calendar.SECOND, cur_cal.get(Calendar.SECOND));
    cal.set(Calendar.MILLISECOND, cur_cal.get(Calendar.MILLISECOND));
    cal.set(Calendar.DATE, cur_cal.get(Calendar.DATE));
    cal.set(Calendar.MONTH, cur_cal.get(Calendar.MONTH));

    Intent intent = new Intent(this, SoundWakefulReceiver.class);
    intent.setAction("SOUND_ACTION");

    PendingIntent pintent = PendingIntent.getService(this, 0, intent, 0);

    AlarmManager alarm = (AlarmManager)getSystemService(Context.ALARM_SERVICE);
    alarm.set(AlarmManager.RTC_WAKEUP, cal.getTimeInMillis(), pintent);
}



public class SoundWakefulReceiver extends WakefulBroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
    Intent service = new Intent(context, SoundService.class);
    Log.d("receiver", "receiver here !!");
    startWakefulService(context, service);
}
}



public class SoundService extends IntentService {

public SoundService(String name) {
    super(name);
}

@Override
protected void onHandleIntent(Intent intent) {
    AudioManager amanager;
    Log.d("service","service started!!");
    amanager = (AudioManager)getSystemService(AUDIO_SERVICE);
    amanager.setStreamMute(AudioManager.STREAM_SYSTEM, true);
    SoundWakefulReceiver.completeWakefulIntent(intent);
}
}

p.s：我已经在清单上声明了“SOUND_ACTION”并启用了用户权限来修改声音。

Answer 1

您应在清单中指定WAKE_LOCK权限才能使用WakefulBroadcastReceiver

无法触发WakefulBroadcastReciever

1 个答案: