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POAlarmManager not adding new Alarms, or not triggering receiver
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copied!<p>I'm currently developing an application which makes use of Android's AlarmManager. I'm trying to add a new alarm to the AlarmManager, but after several hours of trying various things and checking various threads on SO, I'm still at a brick wall. Are there any problems with my code?</p> <hr> <p><strong>Main Activity - saveAlarm() function</strong></p> <pre><code>/** * Saves the current alarm. Adds to the database if it doesn't already exist, or updates if it does. * Also sets alert with AlarmManager. */ public void saveAlarm() { // Create Database instance DbHandler db = new DbHandler(getApplicationContext()); if(alarm.getId() == -1) { // Saving a new alarm db.open(); alarm.setId(db.addAlarm(alarm)); db.close(); } else { db.open(); db.updateAlarm(alarm); db.close(); } // Create the wakeup intent Intent intent = new Intent(this, AlarmReceiver.class); intent.putExtra("alarm_id", alarm.getId()); // Create the Pending Intent PendingIntent sender = PendingIntent.getBroadcast(this, AlarmPlayer.REQUEST_ALARM + alarm.getId(), intent, PendingIntent.FLAG_UPDATE_CURRENT); // Debug Calendar now = Calendar.getInstance(); long dTime = alarm.getNextAlarmTime().getTimeInMillis() - now.getTimeInMillis(); Log.d(TAG, "Setting alarm for " + (dTime / 1000) + " seconds time"); // Add to Android Alarm Manager AlarmManager am = (AlarmManager) getSystemService(ALARM_SERVICE); am.set(AlarmManager.RTC_WAKEUP, alarm.getNextAlarmTime().getTimeInMillis(), sender); } </code></pre> <p>I've verified that the correct time is being passed into <em>am.set</em> (see the debug section above it).</p> <hr> <p><strong>AlarmReceiver.class</strong></p> <pre><code>/** * This class listens out for broadcasts from AlarmManager * and launches the AlarmPlayer activity accordingly. * @author Michael * */ public class AlarmReceiver extends BroadcastReceiver { @Override public void onReceive(Context c, Intent intent) { Log.d("RSS Alarm", "Waking up alarm"); // Launch the AlarmPlayer activity Intent i = new Intent(c, AlarmPlayer.class); i.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); c.startActivity(i); } } </code></pre> <hr> <p>I also have <code><receiver android:process=":remote" android:name="AlarmReceiver" /></code> set up in AndroidManifest.xml. I have no idea what's causing this problem, but it's happening nonetheless. Any help would be greatly appreciated, many thanks in advance.</p> <hr> <p><strong>Edit 1</strong> Changing the timezone to UTC doesn't seem to solve anything, my calendar seems to default to UTC regardless. Current code:</p> <pre><code>// Debug Calendar now = Calendar.getInstance(TimeZone.getTimeZone("UTC")); long dTime = alarm.getNextAlarmTime().getTimeInMillis() - now.getTimeInMillis(); Log.d(TAG, "Setting alarm for " + (dTime / 1000) + " seconds time"); // Add to Android Alarm Manager AlarmManager am = (AlarmManager) getSystemService(ALARM_SERVICE); Log.d(TAG, "Timezone offset is " + TimeZone.getDefault().getRawOffset()); Log.d(TAG, "UTC time is currently " + Calendar.getInstance(TimeZone.getTimeZone("UTC")).getTimeInMillis() / 1000); am.set(AlarmManager.RTC_WAKEUP, (alarm.getNextAlarmTime().getTimeInMillis() - TimeZone.getDefault().getRawOffset()), sender); </code></pre>

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