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POandroid AlarmManager not waking phone up
 

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    <p>I want an activity to be displayed at a certain time. For this, I am using AlarmManager. It works fine when the device is awake, but it doesn't wake it up if it's asleep.</p> <p>My code for setting the alarm:</p> <pre><code>Calendar alarmTime = Calendar.getInstance(); alarmTime.set(Calendar.HOUR_OF_DAY, alarm.hour); alarmTime.set(Calendar.MINUTE, alarm.minute); alarmTime.set(Calendar.SECOND, 0); if (alarmTime.before(now)) alarmTime.add(Calendar.DAY_OF_MONTH, 1); Intent intent = new Intent(ctxt, AlarmReceiver.class); intent.putExtra("alarm", alarm); PendingIntent sender = PendingIntent.getBroadcast(ctxt, alarm.id, intent, PendingIntent.FLAG_UPDATE_CURRENT); alarmManager.set(AlarmManager.RTC_WAKEUP, alarmTime.getTimeInMillis(), sender); </code></pre> <p>My broadcast receiver:</p> <pre><code>@Override public void onReceive(Context context, Intent intent) { try { Bundle bundle = intent.getExtras(); final Alarm alarm = (Alarm) bundle.getSerializable("alarm"); Intent newIntent; if (alarm.type.equals("regular")) { newIntent = new Intent(context, RegularAlarmActivity.class); } else if (alarm.type.equals("password")) { newIntent = new Intent(context, PasswordAlarmActivity.class); } else if (alarm.type.equals("movement")) { newIntent = new Intent(context, MovementAlarmActivity.class); } else { throw new Exception("Unknown alarm type"); } newIntent.putExtra("alarm", alarm); newIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); context.startActivity(newIntent); } catch (Exception e) { Toast.makeText(context, "There was an error somewhere, but we still received an alarm", Toast.LENGTH_SHORT).show(); Log.e("AlarmReceiver", Log.getStackTraceString(e)); } } </code></pre> <p>This code doesn't wake the device on. However, when I turn it back again, they are displayed. I need to make them turn the screen on. Can you help me with this problem?</p>
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