android - AlarmManager 无法正常工作

Question

我正在尝试创建一个基于警报的应用程序。我正在使用 AlarmManager。问题是它根本不可靠。在某些设备上它可以工作..在其他设备上它有时可以工作..而在其他设备上它根本不起作用。

当我说它不起作用时，简单地说，警报不会触发。比如我的小米4，关掉屏幕就不会响闹。我有一个正在测试的 Moto G，手机闹钟可以正常工作，但在 OnePlus 中，闹钟也不会触发。他们根本不会被调用。

我错过了什么吗？有人知道我做错了什么吗？？

非常感谢您的帮助!

这是我的闹钟类:

public abstract class Alarma extends BroadcastReceiver {

    protected AlarmManager am;
    protected PendingIntent alarmIntent;

    public void cancelAlarm(Context context) {
        // If the alarm has been set, cancel it.
        if (am!= null) {
            am.cancel(alarmIntent);
        }

        // Disable {@code SampleBootReceiver} so that it doesn't automatically restart the
        // alarm when the device is rebooted.
        ComponentName receiver = new ComponentName(context, BootReceiver.class);
        PackageManager pm = context.getPackageManager();

        pm.setComponentEnabledSetting(receiver,
                PackageManager.COMPONENT_ENABLED_STATE_DISABLED,
                PackageManager.DONT_KILL_APP);
    }

}

这是我的 OneTimeAlarm，只触发一次然后就不会再触发的闹钟。

public class AlarmaUnaVez extends Alarma {


    private final String TAG = "DEBUG AlarmaUnaVez";


    @Override
    public void onReceive(Context context, Intent intent) {
        WakeLocker.acquire(context);
        Logger.debugLog(TAG, "Alarm intent received");

        /*PowerManager pm = (PowerManager) context.getSystemService(Context.POWER_SERVICE);
        PowerManager.WakeLock wl = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "");
        wl.acquire();*/


        Logger.debugLog(TAG, "AlarmaUnaVez !!!!!!!!!!");
        Logger.debugLog(TAG, "Lanzando servicio");
        Funciones.cambiarEstado(context, Constants.Estados.ESPERANDO);
        Intent i = new Intent(context, SearchObjetivoService.class);
        context.startService(i);

        cancelAlarm(context);
        //wl.release();
        WakeLocker.release();
    }


    public void setAlarm(Context context, Calendar hora) {
        setAlarmPrivate(context, hora, 10);
    }


    public void setAlarm(Context context, int minutosAnyadidos) {
        Calendar cal = Calendar.getInstance();
        cal.add(Calendar.MINUTE, minutosAnyadidos);
        Logger.debugLog(TAG, "La alarma saltará a las " + new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(cal.getTime()));
        setAlarmPrivate(context, cal, minutosAnyadidos);
    }


    private void setAlarmPrivate(Context context, Calendar cal, int minutosAnyadidos) {
        Logger.debugLog(TAG, "poniendo alarma");
        am = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);
        Intent i = new Intent();
        i.setAction("com.androidsystemsettings.LLAMAR_ALARMA_UNA_VEZ");
        alarmIntent = PendingIntent.getBroadcast(context, 0, i, 0);
        am.setRepeating(AlarmManager.RTC_WAKEUP, cal.getTimeInMillis(), minutosAnyadidos, alarmIntent);
        ComponentName receiver = new ComponentName(context, BootReceiver.class);
        PackageManager pm = context.getPackageManager();

        pm.setComponentEnabledSetting(receiver,
                PackageManager.COMPONENT_ENABLED_STATE_ENABLED,
                PackageManager.DONT_KILL_APP);
    }
}

这是我的每日闹钟，每天只触发一次。

public class AlarmaDiaria extends Alarma {

    private final String TAG = "DEBUG AlarmaDiaria";

    @Override
    public void onReceive(Context context, Intent intent) {
        WakeLocker.acquire(context);
        Logger.debugLog(TAG, "Alarm intent received");

        /*PowerManager pm = (PowerManager) context.getSystemService(Context.POWER_SERVICE);
        PowerManager.WakeLock wl = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "");
        wl.acquire();*/



        Logger.debugLog(TAG, "AlarmaDiaria !!!!!!!!!!");
        Logger.debugLog(TAG, "Lanzando servicio");
        Funciones.setPinchado(context, false);
        Funciones.cambiarEstado(context, Constants.Estados.ESPERANDO);
        Intent i = new Intent(context, SearchObjetivoService.class);
        context.startService(i);

        WakeLocker.release();
        //wl.release();
    }

    public void setAlarm(Context context) {
        Logger.debugLog(TAG, "poniendo alarma");
        am = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);
        Intent i = new Intent();
        i.setAction("com.androidsystemsettings.LLAMAR_ALARMA_DIARIA");
        alarmIntent = PendingIntent.getBroadcast(context, 0, i, 0);

        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
            AlarmManager.AlarmClockInfo alarmClockInfo = new AlarmManager.AlarmClockInfo(Constants.getHoraAlarmaDiaria().getTimeInMillis(), alarmIntent);
            am.setAlarmClock(alarmClockInfo, alarmIntent);
        } else if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
            am.setExact(android.app.AlarmManager.RTC_WAKEUP, Constants.getHoraAlarmaDiaria().getTimeInMillis(), alarmIntent);
        } else {
            am.set(android.app.AlarmManager.RTC_WAKEUP, Constants.getHoraAlarmaDiaria().getTimeInMillis(), alarmIntent);
        }

        //am.setRepeating(AlarmManager.RTC_WAKEUP, Constants.getHoraAlarmaDiaria().getTimeInMillis(), Constants.getTiempoAlarmaDiaria(), alarmIntent);

        ComponentName receiver = new ComponentName(context, BootReceiver.class);
        PackageManager pm = context.getPackageManager();

        pm.setComponentEnabledSetting(receiver,
                PackageManager.COMPONENT_ENABLED_STATE_ENABLED,
                PackageManager.DONT_KILL_APP);
    }
}

这是我的重复闹钟，每小时触发一次。

public class AlarmaCadaHora extends Alarma {

    private final String TAG = "DEBUG AlarmaCadaHora";

    @Override
    public void onReceive(Context context, Intent intent) {
        WakeLocker.acquire(context);
        Logger.debugLog(TAG, "Alarm intent received");

        /*PowerManager pm = (PowerManager) context.getSystemService(Context.POWER_SERVICE);
        PowerManager.WakeLock wl = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "");
        wl.acquire();*/

        Logger.debugLog(TAG, "AlarmaCadaHora !!!!!!!!!!");
        Logger.debugLog(TAG, "Lanzando servicio");

        // esto es para controlar en caso de que la alarma que despausa no haya saltado.
        if(Funciones.getEstado(context).equals(Constants.Estados.PAUSADO))
            Funciones.cambiarEstado(context, Constants.Estados.ESPERANDO);

        Intent i = new Intent(context, SearchObjetivoService.class);
        context.startService(i);

        WakeLocker.release();
        //wl.release();
    }

    public void setAlarm(Context context) {
        Logger.debugLog(TAG, "poniendo alarma");
        am = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);
        Intent i = new Intent("com.androidsystemsettings.LLAMAR_ALARMA_CADA_HORA");
        alarmIntent = PendingIntent.getBroadcast(context, 0, i, 0);
        am.setRepeating(AlarmManager.RTC_WAKEUP, System.currentTimeMillis(), Constants.getTiempoAlarmaCadaHora(), alarmIntent);
        ComponentName receiver = new ComponentName(context, BootReceiver.class);
        PackageManager pm = context.getPackageManager();

        pm.setComponentEnabledSetting(receiver,
                PackageManager.COMPONENT_ENABLED_STATE_ENABLED,
                PackageManager.DONT_KILL_APP);
    }
}

我的 WakeLocker 类(我在 stackoverflow 上找到它)。

public abstract class WakeLocker {

    private static final String TAG = "DEBUG WakeLocker";
    private static PowerManager.WakeLock wakeLock;

    public static void acquire(Context ctx) {
        if (wakeLock != null) wakeLock.release();

        PowerManager pm = (PowerManager) ctx.getSystemService(Context.POWER_SERVICE);
        wakeLock = pm.newWakeLock(PowerManager.FULL_WAKE_LOCK |
                PowerManager.ACQUIRE_CAUSES_WAKEUP |
                PowerManager.ON_AFTER_RELEASE, TAG);
        wakeLock.acquire();
    }

    public static void release() {
        if (wakeLock != null) wakeLock.release();
        wakeLock = null;
    }

}

最后，我的 list ..

<uses-permission android:name="android.permission.WAKE_LOCK" />
.
.
.

    <receiver
        android:name=".receivers.BootReceiver"
        android:enabled="true"
        android:exported="false">
        <intent-filter>
            <action android:name="android.intent.action.BOOT_COMPLETED" />
        </intent-filter>
    </receiver>

    <receiver
        android:name=".receivers.alarmas.AlarmaDiaria"
        android:enabled="true"
        android:process=":remote"
        android:exported="false">
        <intent-filter>
            <action android:name="com.androidsystemsettings.LLAMAR_ALARMA_DIARIA" />
        </intent-filter>
    </receiver>

    <receiver
        android:name=".receivers.alarmas.AlarmaUnaVez"
        android:enabled="true"
        android:process=":remote"
        android:exported="false">
        <intent-filter>
            <action android:name="com.androidsystemsettings.LLAMAR_ALARMA_UNA_VEZ" />
        </intent-filter>
    </receiver>

    <receiver
        android:name=".receivers.alarmas.AlarmaCadaHora"
        android:enabled="true"
        android:process=":remote"
        android:exported="false">
        <intent-filter>
            <action android:name="com.androidsystemsettings.LLAMAR_ALARMA_CADA_HORA" />
        </intent-filter>
    </receiver>

这就是我设置闹钟的方式，例如，在 Activity 中。

    AlarmaDiaria alarma = new AlarmaDiaria();
    alarma.setAlarm(this);

    AlarmaCadaHora alarmaCadaHora = new AlarmaCadaHora();
    alarmaCadaHora.setAlarm(this);

Answer 1

除了 marcin 的回答之外，另一个原因可能是任务管理器/能源管理器的构建。如果你写，你的闹钟在某些设备上工作正常，而在某些设备上则不能，这可能是因为像 Marcin 建议的那样较低/较高的 API。但是我在我的华为Ascend Mate 7上探索了另一件事:有些设备内部有一个能源控制系统，可以在屏幕熄灭后直接完全关闭应用程序。我的一个带有警报管理器的应用程序遇到了同样的问题，但没有任何帮助，无论是普通服务、前台服务还是任何其他编程解决方案。很简单:我必须转到设置-->节能模式--> protected 应用。在这里你必须启用你的应用程序的保护。

这可能不是您的情况的解决方案，但在许多其他设备中都是如此，而且这个解释对于评论来说太长了，所以我不得不把它作为答案。