I am using this code to set a Alarm everyday for 8 oclock the next day.
I am setting this alarm in an activity that can be opened based upon the user.
//Setting alarm to fire off NEW_GAME intent every 24 hours.
String alarm = Context.ALARM_SERVICE;
Calendar calendar = Calendar.getInstance();
calendar.set(Calendar.HOUR_OF_DAY, 8);
calendar.set(Calendar.MINUTE, 0);
calendar.set(Calendar.SECOND,0);
calendar.set(Calendar.MILLISECOND, 0);
Log.i("Test", "Current time: " + System.currentTimeMillis() );
Log.i("Test", "Calendar time: " + calendar.getTimeInMillis() );
int currentDate = calendar.get(Calendar.DATE);
calendar.set(Calendar.DATE, currentDate+1);
Log.i("Test", "Calendar time with a day added: " + calendar.getTimeInMillis() );
AlarmManager am = (AlarmManager)getActivity().getSystemService(alarm);
Intent intent = new Intent("NEW_ITEM");
PendingIntent sender = PendingIntent.getBroadcast(getActivity(), 0, intent, 0);
am.setRepeating(AlarmManager.RTC_WAKEUP,calendar.getTimeInMillis() , AlarmManager.INTERVAL_DAY, sender);
My only question is..Lets say at 10:00 o clock today am. i open the activity that alarm is set for tomorrow..Lets say i open the activity again at 12:00 am mid-night, will the alarm set earlier that day be overr written by the current alarm being set?
If you use the same request number (second parameter) while creating the PendingIntent object
PendingIntent sender = PendingIntent.getBroadcast(getActivity(), 0, intent, 0);
then it will overwrite the current PendingIntent and hence will replace the current Alarm.
It will also depend on what you pass as the last parameter to it. Possible values given in the constants section here.
Related
I am try to set an alarm to trigger a service every 12 months.
so I tried the following:
Calendar calendar = Calendar.getInstance();
calendar.set(calendar.MONTH, calendar.get(Calendar.MONTH) + 12);
Log.e("calendar", "= " + Calendar.MONTH + " " + calendar.get(Calendar.MONTH) + 10);
long sdl = calendar.getTimeInMillis();
Intent myIntent = new Intent(mContext,
AlarmAlertBroadcastReciever.class);
PendingIntent pendingIntent = PendingIntent.getBroadcast(mContext, 0, myIntent, PendingIntent.FLAG_UPDATE_CURRENT);
AlarmManager alarmManager = (AlarmManager) mContext
.getSystemService(Context.ALARM_SERVICE);
alarmManager.set(AlarmManager.RTC_WAKEUP, sdl, pendingIntent);
The above is not triggering every 12 months, I tried every 10 months it triggered? How?
If you want something to be triggered every twelve month then add a year to Calendar instance. Something like this -
calendar.add(calendar.YEAR, 1);
Also, if you really want to stick with adding months this is the solution -
calendar.add(calendar.MONTH, 12);
Note - I am using add() not set().
Hope it helps.
Can you plese help me understand why my alarm won't fire :
I am trying to register a pending intent in oder to fire the alarm at 12:22 (current hour now) but the problem is that the alarm won't fire . I tried substituting the miliseconds from calendar.getTimeInMilies() with a hard-encoded time : 10 000 milies (10 seconds);
Not even that it had worked .
AlarmManager alarm_manager =(AlarmManager)this.getSystemService(Context.ALARM_SERVICE);
calendar = Calendar.getInstance();
Intent intent = new Intent(MainActivity.this , AlarmManagerHelper.class);
PendingIntent register =PendingIntent.getActivity(getBaseContext(), 0, intent,0);
calendar.set(Calendar.YEAR,2014);
calendar.set(Calendar.MONTH, 10);
calendar.set(Calendar.DAY_OF_MONTH, 2);
calendar.set(Calendar.HOUR_OF_DAY,12);
calendar.set(Calendar.MINUTE,22);
calendar.set(Calendar.SECOND, 0);
calendar.set(Calendar.AM_PM, Calendar.AM);
alarm_manager.set(AlarmManager.RTC_WAKEUP,calendar.getTimeInMillis(), register);
SimpleDateFormat formatter = new SimpleDateFormat("dd/MM/yyyy hh:mm:ss");
Log.d(TAG ,"Time format is :" +formatter.format(calendar.getTime()));
I also have the following permission set in the Manifest
android:name="android.permission.WAKE_LOCK"
And the output :
Time format is :02/11/2014 12:22:00
Try to use getBroadcast method instead of getActivity:
PendingIntent register =PendingIntent.getBroadcast(MainActivity.this, 0, intent,0);
Hope this helps.
I am trying to create the Alarms in my application using AlarmManager.
I am able to set multiple alarms, but if DATE parameter is added to Calender, the alarms are not at all triggered. Following is my code
Intent intent = new Intent(this, OneShotAlarm.class);
/*Pass the task row ID as the Unique ID for Pending Intent*/
PendingIntent pendingIntent = PendingIntent.getBroadcast(this.getApplicationContext(), (int) rowid , intent, PendingIntent.FLAG_ONE_SHOT);
AlarmManager alarmManager = (AlarmManager)getSystemService(ALARM_SERVICE);
Calendar calendar = Calendar.getInstance(TimeZone.getDefault(), Locale.getDefault());
calendar.clear();
calendar.setTimeInMillis(System.currentTimeMillis());
calendar.set(Calendar.HOUR_OF_DAY, mHour);
calendar.set(Calendar.MINUTE, mMinute);
calendar.set(Calendar.SECOND, 0);
calendar.set(Calendar.MILLISECOND, 0);
long timeSet = calendar.getTimeInMillis();
alarmManager.set(AlarmManager.RTC_WAKEUP, timeSet, pendingIntent);
If I add the Date parameters to Calender as
calendar.add(Calendar.DAY_OF_MONTH, mDay);
calendar.add(Calendar.MONTH, mMonth);
calendar.add(Calendar.YEAR, mYear);
The alarms are not triggered. I have to schedule a event at a future date. Please suggest what I am missing. Thanks for the help!!
P.S. I am taking the date and time from Date & Time dialog picker
I have implement AlarmManager many times, Following technique will help you.
calculate your alarm time in milliseconds for example you want to set alarm after 10 minutes then 10*60*1000 millisecond after current time.
Add your calculated time in current millisecond
Example
long currentTime = System.currentTimeMillis();
long fireTime = 10 * 60 * 1000;
Intent ucintent = new Intent(getApplicationContext(),TimeAlarmReceiver.class);
ucintent.putExtra("isAlarm", true);
PendingIntent mTimeSlot = PendingIntent.getBroadcast(getApplicationContext(), (int)fireTime , ucintent, PendingIntent.FLAG_ONE_SHOT);
alarmManager.set(AlarmManager.RTC_WAKEUP,currentTime+ fireTime, mTimeSlot);
Above example works perfect.
Thank You,
Ketan's answer is good but there is an error.
long currentTime = System.currentTimeMillis();
long fireTime = 10 * 60 * 1000;
Intent ucintent = new Intent(getApplicationContext(),TimeAlarmReceiver.class);
ucintent.putExtra("isAlarm", true);
PendingIntent mTimeSlot = PendingIntent.getBroadcast(getApplicationContext(), (int) requestCode, ucintent, PendingIntent.FLAG_ONE_SHOT);
alarmManager.set(AlarmManager.RTC_WAKEUP,currentTime+ fireTime, mTimeSlot);
However you don't want "fireTime" in the PendingIntent. You should have a request code. Which is a code you create to identify your pending intents. It works in Ketan's case because he is always using the same time. But if you change the time, you will end up with two different intents.
see https://developer.android.com/reference/android/app/PendingIntent.html
I am using this code to launch an Alarm.
The alarm is set in an Activity that the user can launch.
//Setting alarm to fire off NEW_GAME intent every 24 hours.
String alarm = Context.ALARM_SERVICE;
Calendar calendar = Calendar.getInstance();
calendar.set(Calendar.HOUR_OF_DAY, 8);
calendar.set(Calendar.MINUTE, 0);
calendar.set(Calendar.SECOND,0);
calendar.set(Calendar.MILLISECOND, 0);
Log.i("Test", "Current time: " + System.currentTimeMillis() );
Log.i("Test", "Calendar time: " + calendar.getTimeInMillis() );
int currentDate = calendar.get(Calendar.DATE);
calendar.set(Calendar.DATE, currentDate+1);
Log.i("Test", "Calendar time with a day added: " + calendar.getTimeInMillis() );
AlarmManager am = (AlarmManager)getActivity().getSystemService(alarm);
Intent intent = new Intent("NEW_ITEM");
PendingIntent sender = PendingIntent.getBroadcast(getActivity(), 0, intent, 0);
am.setRepeating(AlarmManager.RTC_WAKEUP,calendar.getTimeInMillis() , AlarmManager.INTERVAL_DAY, sender);
I was told i need to supply a uniqu id so that the alarm doesnt over writte each other where getBroadcast() is.
The problem is how do I do this when the user can open the Activity as many times as they want?
Also if I supply a unique ID each time this means it could possibly set 5 of the same ALARMS because of the unique id's.
How or what is the best way to get around this?
you could always just use the unix timestamp of your target time as the unique id. that way, alarms for the exact time WILL override each other, while all other alarms will stay seperate
[EDIT:] Here is some example code:
AlarmManager am = (AlarmManager)getActivity().getSystemService(alarm);
Intent intent = new Intent(String.valueOf(calendar.getTimeInMillis()));
PendingIntent sender = PendingIntent.getBroadcast(getActivity(), 0, intent, 0);
am.setRepeating(AlarmManager.RTC_WAKEUP,calendar.getTimeInMillis() , AlarmManager.INTERVAL_DAY, sender);
I am using this code to create an Alarm in a activity that can be launched by the user.
The Alarm sends an intent that launches a broadcast reciever and then a service.
private void setGameAlerts(){
//Setting alarm to fire off NEW_GAME intent every 24 hours.
String alarm = Context.ALARM_SERVICE;
Calendar calendar = Calendar.getInstance();
calendar.set(Calendar.HOUR_OF_DAY, 8);
calendar.set(Calendar.MINUTE, 0);
calendar.set(Calendar.SECOND,0);
calendar.set(Calendar.MILLISECOND, 0);
AlarmManager am = (AlarmManager)getActivity().getSystemService(alarm);
Intent intent = new Intent("NEW_ITEM");
PendingIntent sender = PendingIntent.getBroadcast(getActivity(), 0, intent, 0);
am.setRepeating(AlarmManager.RTC_WAKEUP,calendar.getTimeInMillis() , AlarmManager.INTERVAL_DAY, sender);
Log.e("RELEASE LIST", "ALARM Set For 1 day from " + calendar.getTimeInMillis());
For some reason EVERYTIME the activity is launched it Automatically sends this intent and the service is launched. is there something wrong with my code that is causing this to happen other than the alarm going off everyday at 8 oclock?
It looks to me like you're setting it for 8am TODAY, not 8am tomorrow. For example, if I run this code:
Calendar calendar = Calendar.getInstance();
calendar.set(Calendar.HOUR_OF_DAY, 8);
calendar.set(Calendar.MINUTE, 0);
calendar.set(Calendar.SECOND,0);
calendar.set(Calendar.MILLISECOND, 0);
Log.i("Test", "Current time: " + System.currentTimeMillis() );
Log.i("Test", "Calendar time: " + calendar.getTimeInMillis() );
calendar.add(Calendar.DATE, 1);
Log.i("Test", "Calendar time with a day added: " + calendar.getTimeInMillis() );
I get the result:
10-06 23:26:50.050: INFO/Test(8890): Current time: 1317968810056
10-06 23:26:50.050: INFO/Test(8890): Calendar time: 1317913200000
10-06 23:26:50.050: INFO/Test(8890): Calendar time with a day added: 1317999600000
The calendar time is a number less than the current time, so therefore that calendar entry is in the past. It might make some sense that Android would immediately send the intent for an event that has past. If you add a day to it, or specify a date in your Calendar object, it should work.
Note that this numerical dates are simply the standard Unix time with milliseconds added on. If you drop the last three digits and put the number into a Unix time converter, you'll be able to check that the numbers you're working with make sense. Eg: use 1317999600 with the Unix time converter and you'll get 10am EST, which is 8am PST (my time zone).
I hope that helps!