How to execute one task every hour?

Question

I have been developing an Android application and I need to execute 1 task every hour. I uses the following code for it:

private static final long ALARM_PERI         


        

Answer 1

Try by modifying your code by changing your setRepeating() method like this

manager.setRepeating(AlarmManager.ELAPSED_REALTIME_WAKEUP,SystemClock.elapsedRealtime(), SystemClock.elapsedRealtime()+(60*60*1000), receiver);

OR

Test this it is repeating for every minute

manager.setRepeating(AlarmManager.ELAPSED_REALTIME_WAKEUP,Calendar.getInstance().getTimeInMillis(), Calendar.getInstance().getTimeInMillis()+(1*60*1000), receiver);

Answer 2

Instead of Alram-Manager I recommended you to use Android-TimerTask

The TimerTask class represents a task to run at a specified time. The task may be run once or repeatedly. Its perfect suits for your requirements.

Answer 3

Have you added receiver tag in application tag in manifest.xml
<receiver android:name=".AlarmReceiver" android:process=":remote"/>

Answer 4

According to your code, ALARM_PERIOD is 1000L, as repeating interval. So I doubt the alarm will set of in every 1000 milliseconds.

if you are setting repeating interval for every hour, it should be 3600000L. And take note that if the phone is restarted, your alarm manager will no longer work unless you start again.

Here is the my Code:

private void setAlarmManager() {
    Intent intent = new Intent(this, AlarmReceiver.class);
    PendingIntent sender = PendingIntent.getBroadcast(this, 2, intent, 0);
    AlarmManager am = (AlarmManager) getSystemService(ALARM_SERVICE);
    long l = new Date().getTime();
    if (l < new Date().getTime()) {
        l += 86400000; // start at next 24 hour
    }
    am.setRepeating(AlarmManager.RTC_WAKEUP, l, 86400000, sender); // 86400000
}