android alarmmanager 中的 setrepeating() 问题？答案

【问题标题】：Issue in setrepeating() in android alarmmanger?android alarmmanager 中的 setrepeating() 问题？
【发布时间】：2017-05-12 06:57:19
【问题描述】：

我已经尝试使用alarmanager 来获取android 中的每日通知...。闹钟会在指定时间开始，但之后每分钟都会重复...我在Mainactivity 的setrepeating() 函数中指定了INTERVAL_DAY，但确实如此似乎不起作用。它包含三个部分 Mainactivity、MyReceiver 和 AlarmService。任何人似乎都可以解决这个问题吗？？

主要活动

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        Calendar calendar = Calendar.getInstance();

// we can set time by open date and time picker dialo

        calendar.set(Calendar.HOUR_OF_DAY, 12);
        calendar.set(Calendar.MINUTE, 10);
        calendar.set(Calendar.SECOND, 0);

        Intent intent1 = new Intent(MainActivity.this, MyReceiver.class);
        PendingIntent pendingIntent = PendingIntent.getBroadcast(MainActivity.this, 0, intent1, PendingIntent.FLAG_CANCEL_CURRENT);
        AlarmManager am = (AlarmManager) getSystemService(this.ALARM_SERVICE);
        Log.e("Tag","calling here");
        am.setRepeating(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(),864000, pendingIntent);

    }
}

我的接收者

public class MyReceiver extends BroadcastReceiver{

    int MID=0;
    @Override
    public void onReceive(Context context, Intent intent) {
        // TODO Auto-generated method stub

        long when = System.currentTimeMillis();
        NotificationManager notificationManager = (NotificationManager) context
                .getSystemService(Context.NOTIFICATION_SERVICE);

        Intent notificationIntent = new Intent(context, MainActivity.class);
        notificationIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);

        PendingIntent pendingIntent = PendingIntent.getActivity(context, 0,
                notificationIntent, PendingIntent.FLAG_CANCEL_CURRENT);


        Uri alarmSound = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);

        NotificationCompat.Builder mNotifyBuilder = new NotificationCompat.Builder(
                context).setSmallIcon(R.drawable.icon)
                .setContentTitle("Alaram Fired")
                .setContentText("Events To be PErformed").setSound(alarmSound)
                .setAutoCancel(true).setWhen(when)
                .setContentIntent(pendingIntent)
                .setVibrate(new long[]{1000, 1000, 1000, 1000, 1000});
        notificationManager.notify(MID, mNotifyBuilder.build());
        MID++;

    }

}

我的警报服务

public class MyAlarmService extends Service
{
    private NotificationManager mManager;
    @Override
    public IBinder onBind(Intent arg0)
    {
        // TODO Auto-generated method stub
        return null;
    }
    @Override
    public void onCreate()
    {
        // TODO Auto-generated method stub
        super.onCreate();
    }
    @SuppressWarnings("static-access")
    @Override
    public void onStart(Intent intent, int startId)
    {
        Log.e("Tag1","alarmservice here");
        super.onStart(intent, startId);
        mManager = (NotificationManager) this.getApplicationContext().getSystemService(this.getApplicationContext().NOTIFICATION_SERVICE);
        Intent intent1 = new Intent(this.getApplicationContext(),MainActivity.class);
        Notification notification = new Notification(R.drawable.icon,"This is a test message!", System.currentTimeMillis());
        intent1.addFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP| Intent.FLAG_ACTIVITY_CLEAR_TOP);
        PendingIntent pendingNotificationIntent = PendingIntent.getActivity( this.getApplicationContext(),0, intent1,PendingIntent.FLAG_CANCEL_CURRENT);
        notification.flags |= Notification.FLAG_AUTO_CANCEL;
       //notification.setLatestEventInfo(this.getApplicationContext(), "Daily Notification Demo", "This is a test message!", pendingNotificationIntent);
        mManager.notify(0, notification);
    }
    @Override
    public void onDestroy()
    {
        // TODO Auto-generated method stub
        super.onDestroy();
    }

}

【问题讨论】：

您在特定的 android 版本或所有 android os 版本上都面临这个问题。??? @user5158017
使用 AlarmManager.INTERVAL_DAY 而不是 86400L，检查两个值。并使用 setInexactRepeating
我在所有 android 版本上都面临这个问题......我尝试过使用 Alarmmanger.INTERVAL_DAY 和 setInexactRepeating 但同样的问题仍然存在！

标签： java android notifications android-service alarmmanager

【解决方案1】：

AlarmManager.setRepeating 在不同的 android 版本上无法正常工作。

试试 setExact。它不会重复，但您可以实现如下所述的重复功能：

更新我的接收器

AlarmManager manager = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);

Intent alarmIntent = new Intent(this, AlarmReceiver.class);
pendingIntent = PendingIntent.getBroadcast(this, 0, alarmIntent, 0);
manager.setExact(AlarmManager.RTC_WAKEUP, (864000 + System.currentTimeMillis()),pendingIntent);

这里我们通过使用 864000 + System.currentTimeMillis(); 计算 nextAlarmTime 再次安排警报；

【讨论】：