Intent myAlarm = new Intent(context, AlarmReceiver.class);
PendingIntent recurringAlarm = PendingIntent.getBroadcast(context.getApplicationContext(), 0, myAlarm, PendingIntent.FLAG_CANCEL_CURRENT);
AlarmManager alarms = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);
Calendar updateTime = Calendar.getInstance();
alarms.setRepeating(AlarmManager.RTC_WAKEUP, updateTime.getTimeInMillis(), AlarmManager.INTERVAL_DAY / 3, recurringAlarm);
Say this piece of code is executed more than once. This results in that many alarms being created (I find this info from dumpsys where it says X# wakes - X# alarms).
I've been told that setting the same request code and same intent cannot start the alarm the second time.
Related
In my app, I need to start a service at 2:00pm daily. Right now I wrote the code to trigger the alarm once, this code is ran every time I open the app:
AlarmManager alarmMgr = (AlarmManager)getSystemService(Context.ALARM_SERVICE);
Intent intent = new Intent(this, DownloadReceiver.class);
PendingIntent pIntent = PendingIntent.getBroadcast(this, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT);
alarmMgr.cancel(pIntent);
Calendar cal= Calendar.getInstance();
cal.setTimeInMillis(System.currentTimeMillis());
cal.set(Calendar.HOUR_OF_DAY,refreshhour);
cal.set(Calendar.MINUTE,refreshmin);
cal.set(Calendar.SECOND, 0);
// if the scheduler date is passed, move scheduler time to tomorrow
if (System.currentTimeMillis() > cal.getTimeInMillis()) {
cal.add(Calendar.DAY_OF_YEAR, 1);
}
if(android.os.Build.VERSION.SDK_INT>=23) {
alarmMgr.setAndAllowWhileIdle(AlarmManager.RTC_WAKEUP,
cal.getTimeInMillis(), pIntent);
}
else{
alarmMgr.setInexactRepeating(AlarmManager.RTC_WAKEUP, cal.getTimeInMillis(),
AlarmManager.INTERVAL_DAY, pIntent);
}
Q1. I used setAndAllowWhileIdle() for sdk above 23 in case the device is in Doze mode. I cannot find any option in this function that I can set the alarm to repeat every day.
Q2. I also have questions about setInexactRepeating() , normally it is set to repeat every day by setting the parameter INTERVAL_DAY , but in the docs, it says
As of API 19, all repeating alarms will be inexact and subject to
batching with other alarms regardless of their stated repeat interval.
Does this mean INTERVAL_DAY does not work anymore, so how can I set the alarm daily without rerunning this function and reset alarmManager?
Try below code will solve your problem-
AlarmManager alarmMgr = (AlarmManager)getSystemService(Context.ALARM_SERVICE);
boolean flag = (PendingIntent.getBroadcast(this, 0,
new Intent("totime.action.string"),
PendingIntent.FLAG_NO_CREATE) != null);
if(!flag)
{
Calendar calendar = Calendar.getInstance();
calendar.set(Calendar.HOUR_OF_DAY, 14);
calendar.set(Calendar.MINUTE, 0);
calendar.set(Calendar.SECOND, 0);
Intent intent = new Intent("totime.action.string");
PendingIntent pendingIntent = PendingIntent.getBroadcast(this, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT);
AlarmManager alarmManager = (AlarmManager) Data_Graph.this.getSystemService(Context.ALARM_SERVICE);
alarmManager.setRepeating(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(),(24*60*60*1000), pendingIntent);
}
I have an AlarmService that is initialized when the devicve boots, starts at 6 am, ends at 6 pm and repeats hourly.
How do I make sure that it starts again after I cancel it at 6 pm?
This is my BootReceiver:
if (intent.getAction().equals("android.intent.action.BOOT_COMPLETED")) {
// assign RefreshService class
Intent alarmIntent = new Intent(context, RefreshService.class);
PendingIntent alarmPendingIntent = PendingIntent.getBroadcast(context, alarmManagerRequestCode, alarmIntent, 0);
// set the alarm
// it starts at 6 am and repeats once an hour
// elapsed_realtime is used to save ressources
AlarmManager alarmManager = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);
alarmManager.setInexactRepeating(AlarmManager.ELAPSED_REALTIME, firstRefresh,
AlarmManager.INTERVAL_HOUR,
alarmPendingIntent);
}
So it is initialized when the device boots and starts at 6 am (firstRefresh) and repeats hourly.
To have it stop I would put the following into my RefreshService(lastRefresh is 6 pm in milliseconds):
if (System.currentTimeMillis() >= lastRefresh) {
Intent alarmIntent = new Intent(this, RefreshService.class);
PendingIntent alarmPendingIntent = PendingIntent.getBroadcast(this, BootReceiver.alarmManagerRequestCode, alarmIntent, 0);
AlarmManager alarmManager = (AlarmManager) this.getSystemService(Context.ALARM_SERVICE);
alarmManager.cancel(alarmPendingIntent);
}
Appreciate y'alls help!
Thanks #Opiatefuchs for pointing that out:
The only thing you have to do is setting the alarm after cancelling it and setting the first time it's fired to needed time the next day.
Use calender, AlarmManager and pendingIntent for this-
Calendar calendar = Calendar.getInstance();
calendar.set(Calendar.HOUR_OF_DAY, 5); // For 5 AM or 6 AM
calendar.set(Calendar.MINUTE, 0);
calendar.set(Calendar.SECOND, 0);
PendingIntent pi = PendingIntent.getService(context, 0,
new Intent(context, NewClass.class),PendingIntent.FLAG_UPDATE_CURRENT);
AlarmManager am = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);
am.setRepeating(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(),
AlarmManager.INTERVAL_DAY, pi);
Use setRepeating:
here is the nice example:
https://stackoverflow.com/a/13879448/4617458
I used the following code for setting the alarm for week(Repeating). The following code trigger my service in between 15 to 30 minute. Actually i have configured it for a week
AlarmManager alarm = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);
Intent newIntent = new Intent(context, SyncService.class);
newIntent.putExtra(Constant.TASK_ID,Constant.PROMPT_ID);
PendingIntent pIntent = PendingIntent.getService(context, 0, newIntent, 0);
//
long interval = 7 * AlarmManager.INTERVAL_DAY;
alarm.setInexactRepeating(AlarmManager.RTC, System.currentTimeMillis(), interval, pIntent);
I am starting a service using AlarmManager which wakes up after 5 minutes and does some tasks, but I can't stop the service. How can I do this?
My code for starting the service:
Intent myIntent = new Intent(MainActivity.this, SendDataService.class);
pendingIntent = PendingIntent.getService(MainActivity.this, 0, myIntent, 0);
AlarmManager alarmManager = (AlarmManager)getSystemService(ALARM_SERVICE);
Calendar calendar = Calendar.getInstance();
calendar.setTimeInMillis(System.currentTimeMillis());
// Wake up after 5 minutes
alarmManager.setRepeating(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(), 1000*60*5, pendingIntent);
I set alarm from one class using this code
Intent myIntent = new Intent(ClassOne.this, AlarmService.class);
pendingIntent = PendingIntent.getService(ClassOne.this, 0, myIntent, 0);
AlarmManager alarmManager = (AlarmManager) getSystemService(ALARM_SERVICE);
Calendar calendar = Calendar.getInstance();
calendar.setTimeInMillis(currentDate.getTime());
long when = calendar.getTimeInMillis();
alarmManager.setRepeating(AlarmManager.RTC_WAKEUP, when, (7 * 24 * 60 * 60) * 1000, pendingIntent);
Now I need to cancel the pending alarms from another class. Can I just use this code?
Intent myIntent = new Intent(ClassTwo.this, AlarmService.class);
PendingIntent pendingIntent = PendingIntent.getService(ClassTwo.this, 0, myIntent, 0);
AlarmManager alarmManagerCancel = (AlarmManager) getSystemService(ALARM_SERVICE);
alarmManagerCancel.cancel(pendingIntent);
Or there is a better/proper way to cancel pending alarms?
As long as the PendingIntent are equivalent as the one you used to register the alarm, it doesn't matter where you call cancel() from. Two PendingIntents are equivalent (equals() returns true) if the underlying intents and request codes are the equivalent.