CODEWITHSUNDEEP
androidandroid-widgetalarmmanagerandroid-alarms
iTurki
iTurki

Reputation: 16398

Send Intent Each Day Using AlarmManager?

I want the following:

Here is how I did it:

In my AppWidgetProvider subclass:

@Override
public void onEnabled(Context context) {
    super.onEnabled(context);
    Log.d(LOG_TAG, "Widget Provider enabled.  Starting timer");

    //Setting the Calender object to midnight time.
    Calendar calendar = Calendar.getInstance();
    calendar.setTimeInMillis(System.currentTimeMillis());
    calendar.add(Calendar.SECOND, 0);
    calendar.add(Calendar.MINUTE, 0);
    calendar.add(Calendar.HOUR, 0);

    //The fired Intent
    Intent intent = new Intent(CLOCK_WIDGET_UPDATE); //custom intent name
    PendingIntent pendingIntent = PendingIntent.getBroadcast(context, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT);

    AlarmManager alarmManager = (AlarmManager)context.getSystemService(Context.ALARM_SERVICE);  
    alarmManager.setRepeating(AlarmManager.RTC_WAKEUP,
        calendar.getTimeInMillis(), 1000*60*60*24, pendingIntent);
}

Although I think I did it right, this code doesn't work!

To test it, I changed 1000*60*60*24 with 10000 (10 sec) and updated a textView in the widget with random number. The random number never changed.

Any help will be appreciated !

Upvotes: 1

Views: 2041

Answers (2)

iTurki
iTurki

Reputation: 16398

I finally found the problem !

It seems that I need to set the AM_PM value too. When I print the calender using getTime().toLocaleString(), it was set to the next day but 12 hours later (12:00:00 PM).

Calendar calendar = Calendar.getInstance();
calendar.setTimeInMillis(System.currentTimeMillis());
calendar.set(Calendar.SECOND, 0);
calendar.set(Calendar.MINUTE, 0);
calendar.set(Calendar.HOUR, 0);
calendar.set(Calendar.AM_PM, Calendar.AM);
calendar.add(Calendar.DAY_OF_MONTH, 1);

This is a perfect setup for the Calender instance that will set the alarm to the next day at midnight (i.e. the nearest midnight). You just pass it to the setRepeating() method.

Thanks @CommonsWare

Upvotes: 4

CommonsWare
CommonsWare

Reputation: 1006624

First, what you want is not strictly possible. Android is not a RTOS; you may not get control "at midnight EXACTLY"

Second, your Calendar object represents a time in the past (unless it happens to be midnight at the time you are executing that code, in which case it represents the present). Try a start time in the future.

Upvotes: 2

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