I have started alarm of 9:00 AM in android on Boot Completed. But fires alarm every minute after it has completed boot.
My Requirement is it should set Alarm after boot but only fires alarm at 9:00 AM.
Here is my code:
public class AlarmUtil {
private PendingIntent alarmIntent;
public static void setAlarm(Context context) {
AlarmManager alarmManager = (AlarmManager) context
.getSystemService(Context.ALARM_SERVICE);
Calendar calendar = Calendar.getInstance();
calendar.set(Calendar.HOUR_OF_DAY, 9);
calendar.set(Calendar.MINUTE, 00);
calendar.set(Calendar.SECOND, 00);
calendar.set(Calendar.AM_PM, Calendar.AM);
//calendar.setTimeInMillis(calendar.getTimeInMillis());
calendar.add(Calendar.SECOND, 1);
Intent intent = new Intent(context, Services.class);
PendingIntent pintent = PendingIntent.getService(context, 123456789,
intent, 0);
alarmManager.setRepeating(AlarmManager.RTC_WAKEUP,
calendar.getTimeInMillis(), 1 * 60 * 1000, pintent);
}
}
public class AlarmBroadcastReciever extends BroadcastReceiver {
#Override
public void onReceive(Context context, Intent intent) {
if (intent.getAction().equals(Intent.ACTION_BOOT_COMPLETED)) {
Toast.makeText(context, "Booted!", Toast.LENGTH_SHORT).show();
AlarmUtil.setAlarm(context);
}
}
}
services (My service Class)
public class Services extends IntentService {
public Services(String name) {
super("services");
// TODO Auto-generated constructor stub
}
public Services() {
super("services");
// TODO Auto-generated constructor stub
}
#Override
public void onCreate() {
super.onCreate();
}
#Override
public int onStartCommand(Intent intent, int flags, int startId) {
MyApp.counter += 1;
Toast.makeText(getApplicationContext(),
"Service started: " + MyApp.counter, Toast.LENGTH_LONG).show();
return START_STICKY;
}
#Override
public IBinder onBind(Intent arg0) {
// TODO Auto-generated method stub
return null;
}
#Override
protected void onHandleIntent(Intent intent) {
Toast.makeText(getApplicationContext(), "handling intent",
Toast.LENGTH_LONG).show();
}
}
where i am lacking. Please help me. Thanks in advance.
alarmManager.setRepeating(AlarmManager.RTC_WAKEUP,
calendar.getTimeInMillis(), 1 * 60 * 1000, pintent);
By calling setRepeating(), you are instructing it to fire the intent on every minute. You probably meant to use set() or setExact() instead.
Additionally, you're setting the alarm for 9:00 on the current date. I'm not exactly sure what your objective is but if you want an alarm for the "next 9:00" (i.e. as an alarm clock) you should probably add a day if the current time is greater than 9:00. From the documentation:
If the stated trigger time is in the past, the alarm will be triggered
immediately.
EDIT: If what you need is to fire this alarm every day at 9:00, then setRepeating() is correct, but the time in milliseconds should be AlarmManager.INTERVAL_DAY. Be mindful of the note about past alarms, though. If you boot your phone, say, at 10:00 AM, and you use your current code, you will get an immediate alarm in addition to the future ones.
And, as #DerGolem pointed out, if you target API level 19 then these alarms will be inexact (and there is no setRepeatingExact()). If you need exact alarms, then you will have to schedule one with setExact(), then the next one when that one fires, and so on.
Hi I have used following code and able to generate alarm at 9 Am each day
alarmMgr = (AlarmManager) this.getSystemService(Context.ALARM_SERVICE);
Intent intent = new Intent(this, AlarmService.class);
PendingIntent pintent = PendingIntent.getService(this, 123456789,
intent, 0);
// Set the alarm to start at 8:30 a.m.
Calendar calendar = Calendar.getInstance();
calendar.setTimeInMillis(System.currentTimeMillis());
calendar.set(Calendar.HOUR_OF_DAY, 9);
calendar.set(Calendar.MINUTE, 00);
alarmMgr.setRepeating(AlarmManager.RTC_WAKEUP,
calendar.getTimeInMillis(), 1000 * 60 * 1 * 60 * 24, pintent);
you need to replace "1 * 60 * 1000" with AlarmManager.INTERVAL_DAY to set it daily
Related
I want to reboot device on particular time so i am using alarm manager for that.below is the code of my activity.
public class MainActivity extends AppCompatActivity {
private static int timeHour = Calendar.getInstance().get(Calendar.HOUR_OF_DAY);
private static int timeMinute = Calendar.getInstance().get(Calendar.MINUTE);
AlarmManager alarmManager;
private PendingIntent pendingIntent;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
alarmManager = (AlarmManager) getSystemService(ALARM_SERVICE);
Intent myIntent = new Intent(MainActivity.this, AlarmReceiver.class);
pendingIntent = PendingIntent.getBroadcast(MainActivity.this, 0, myIntent, 0);
Calendar calendar = Calendar.getInstance();
calendar.setTimeInMillis(System.currentTimeMillis());
calendar.set(Calendar.HOUR_OF_DAY, 11);
calendar.set(Calendar.MINUTE, 02);
alarmManager.cancel(pendingIntent);
// if(Calendar.getInstance().after(calendar)){
// // Move to tomorrow
// calendar.add(Calendar.DATE, 1);
// }
alarmManager.setRepeating(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(),AlarmManager.INTERVAL_DAY, pendingIntent);
//
// alarmManager.setInexactRepeating(AlarmManager.ELAPSED_REALTIME_WAKEUP,
// SystemClock.elapsedRealtime() + AlarmManager.INTERVAL_DAY,
// AlarmManager.INTERVAL_DAY, pendingIntent);
}
}
and this is my receiver
public class AlarmReceiver extends BroadcastReceiver {
public static void rebootDevice() {
try {
Process process = Runtime.getRuntime().exec("su");
DataOutputStream os = new DataOutputStream(process.getOutputStream());
os.writeBytes("reboot \n");
} catch (Throwable t) {
t.printStackTrace();
}
}
#Override
public void onReceive(Context context, Intent intent) {
Toast.makeText(context, "Triggered", Toast.LENGTH_SHORT).show();
Log.d("Gajanand", "onReceive: Triggered");
rebootDevice();
}
}
Yes code is working fine but not on the exact date.for example if i run the same code now. alarm not triggers if i change the date it triggers. i am not getting what is the problem with code and there is 10 seconds delay in triggering alarm. any help
There are two problems with your code:
Calendar calendar = Calendar.getInstance();
calendar.setTimeInMillis(System.currentTimeMillis());
calendar.set(Calendar.HOUR_OF_DAY, 11);
calendar.set(Calendar.MINUTE, 02);
Here you're setting HOUR_OF_DAY and MINUTE but the SECOND field still has its initial value, so the alarm won't be triggered exactly on the minute
(unless you called calendar.setTimeInMillis(System.currentTimeMillis()) exactly on the minute, which is quite unlikely).
Should be something like this:
Calendar calendar = Calendar.getInstance();
calendar.setTimeInMillis(System.currentTimeMillis());
calendar.set(Calendar.HOUR_OF_DAY, 11);
calendar.set(Calendar.MINUTE, 2);
calendar.set(Calendar.SECOND, 0); // setting seconds to 0
setRepeating() is inexact and doesn't work with Doze.
For exact trigger times you should use exact alarms, check this answer for an example.
This is from the documentation
Note: as of API 19, all repeating alarms are inexact. If your
application needs precise delivery times then it must use one-time
exact alarms, rescheduling each time as described above. Legacy applications
whose {#code targetSdkVersion} is earlier than API 19 will continue to have all
of their alarms, including repeating alarms, treated as exact.
Repeating alarms are always inexact so that they wont consume much battery. They may be fired a bit later than the expected time. If you want your alarm to exact, don't make it repeating. Set it again once you receive the alarm
I am making a notification application and for that i am using scheduled alarms for running the notifications using Broadcast receiver class and i am prompting user to select from daily or hourly notifications and i am defining both alarms in the same receiver under the same function and it is working fine but the problems comes when i restart my device,when i restart it both the alarms (daily and hourly) are getting triggered when i am only setting one for example if i set an alarm for 11:20 A.M and restart my device the hourly one and this 11:20 one both are getting triggered,i want that when i restart my device only the alarm which was selected before the device boot only gets triggered.
My receiver class:-
public class alarmreceiver extends BroadcastReceiver {
int id=0;
#Override
public void onReceive(Context context, Intent intent) {
Toast.makeText(context, "Alarm running", Toast.LENGTH_SHORT).show();
start(context,id);
}
static void start(Context context,int id) {
Intent intent = new Intent(context, notification_receiver.class);
PendingIntent pendingintent = PendingIntent.getBroadcast(context, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT);
AlarmManager alarmManager = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);
if (id==1) {
Calendar calendar = Calendar.getInstance();
calendar.set(Calendar.HOUR, 11);
calendar.set(Calendar.MINUTE, 9);
calendar.set(Calendar.AM_PM, Calendar.AM);
alarmManager.setInexactRepeating(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(), AlarmManager.INTERVAL_DAY, pendingintent);
}
else
if (id==2) {
alarmManager.setRepeating(AlarmManager.ELAPSED_REALTIME_WAKEUP,
SystemClock.elapsedRealtime(), 60 * 1000
, pendingintent);
}
}
I am calling this function under button click listener like this:-
For daily notifications:-
alarmreceiver.start(getApplicationContext(),1);
For hourly notifications:-
alarmreceiver.start(getApplicationContext(),2);
This code:
alarmManager.setRepeating(AlarmManager.ELAPSED_REALTIME_WAKEUP,
SystemClock.elapsedRealtime(), 60 * 1000, pendingintent);
sets a repeating alarm that goes off every minute, not every hour!
Also, this code sets an alarm that goes off right now and again every minute. The second argument to setRepeating() is the time of first alarm. You've passed SystemClock.elapsedRealtime() which basically means "now".
I have a TimerTask object timerTask. My code is running but when service gets started initially, my timer task runs instantly before the specified time i.e. 3:30 PM, though I want it to run on 3:30 PM once per day only.
Calendar cal = Calendar.getInstance();
cal.set(Calendar.AM_PM, Calendar.PM);
cal.set(Calendar.HOUR, 3);
cal.set(Calendar.MINUTE, 30);
cal.set(Calendar.SECOND, 0);
Date date = cal.getTime();
timer.schedule(timerTask, date, 1000*60*60*24); // once per day
As other community users suggested, don't use Timertask, android has a
AlarmManager
that you can use.
HOW?
Register the alarm manager with a broadcast receiver, there override the onReceive method (what to do when the alamr is fired)
Set the alarm with the interval daily and the time to be executed.
Here a Snippet as Example:
public class MainActivity extends Activity {
private static final String TAG ="MainActivity";
PendingIntent myPendingIntent;
AlarmManager alarmManager;
BroadcastReceiver myBroadcastReceiver;
Calendar firingCal;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//Register AlarmManager Broadcast receive.
firingCal= Calendar.getInstance();
firingCal.set(Calendar.HOUR, 8); // At the hour you want to fire the alarm
firingCal.set(Calendar.MINUTE, 0); // alarm minute
firingCal.set(Calendar.SECOND, 0); // and alarm second
long intendedTime = firingCal.getTimeInMillis();
registerMyAlarmBroadcast();
alarmManager.set( AlarmManager.RTC_WAKEUP, intendedTime , AlarmManager.INTERVAL_DAY , myPendingIntent );
}
private void registerMyAlarmBroadcast()
{
Log.i(TAG, "Going to register Intent.RegisterAlramBroadcast");
//This is the call back function(BroadcastReceiver) which will be call when your
//alarm time will reached.
myBroadcastReceiver = new BroadcastReceiver()
{
#Override
public void onReceive(Context context, Intent intent)
{
Log.i(TAG,"BroadcastReceiver::OnReceive()");
Toast.makeText(context, "Your Alarm is there", Toast.LENGTH_LONG).show();
}
};
registerReceiver(myBroadcastReceiver, new IntentFilter("com.alarm.example") );
myPendingIntent = PendingIntent.getBroadcast( this, 0, new Intent("com.alarm.example"),0 );
alarmManager = (AlarmManager)(this.getSystemService( Context.ALARM_SERVICE ));
}
private void UnregisterAlarmBroadcast()
{
alarmManager.cancel(myPendingIntent);
getBaseContext().unregisterReceiver(myBroadcastReceiver);
}
#Override
protected void onDestroy() {
unregisterReceiver(myBroadcastReceiver);
super.onDestroy();
}
}
Edit:
if the time can changed dynamically in the App depending on user-inputs, then just change the Calender firingCal variable for adjusting the time.
I have a service, which I want to run each day so check some stuff in my db, and if needed create a notification.
To run my service each day, I used an alarmManager, which works fine for the first time, but as soon as in starts my services gets in an infinite loop, I know this is because of the alarmManager since it just gets in the loop when the alarmmanager is starting. here is the code of my service:
public class MyService extends Service {
...
public MyService() {
}
#Override
public int onStartCommand(Intent intent, int flags, int startId) {
checkMechanicUseer();
this.stopSelf();
return START_NOT_STICKY;
}
private void checkMechanicUseer() {
...
}
#Override
public void onDestroy() {
super.onDestroy();
final SharedPreferences settings = getSharedPreferences("MYSETTINGS",0);
int time = settings.getInt("time",9);
Calendar calNow = Calendar.getInstance();
Calendar calSet = (Calendar) calNow.clone();
calSet.set(Calendar.HOUR_OF_DAY, 9);
calSet.set(Calendar.MINUTE, 0);
calSet.set(Calendar.SECOND, 0);
calSet.set(Calendar.MILLISECOND, 0); // I want it to trigger at 09:00 am each day
AlarmManager alarm = (AlarmManager)getSystemService(ALARM_SERVICE);
alarm.setRepeating(
alarm.RTC_WAKEUP,
calSet.getTimeInMillis() ,(1000 * 60 ),
PendingIntent.getService(this, 0, new Intent(this, MyService.class), 0)
); // I set the (1000 * 60 ) so I can check it with 1 min interval, so I wont need to wait one day for it ... of course I need to change it to (1000 * 60 * 60 * 24)
Toast.makeText(MyService.this, "Service destroyed",Toast.LENGTH_SHORT).show();
}
#Override
public IBinder onBind(Intent intent) {
// TODO: Return the communication channel to the service.
throw new UnsupportedOperationException("Not yet implemented");
}
}
I guess I need to cancel my alarm some where, and then set another one. but have no idea how or where to do it
Still have the problem if I change the alarm.setRepeat with alarm.set as follow:
alarm.set(
alarm.RTC_WAKEUP,
calSet.getTimeInMillis() + (1000 * 60 ),
PendingIntent.getService(this, 0, new Intent(this, MyService.class), 0)
);
I think that it is because you set the alarm for a past date, first fire at 9 o'clock then you reset the alarm for 9 o'clock but this time is in the past so the alarm is fire immediatly and you have a nice loop.
Check if the time is not in the past, if it is, add a day to your calendar.
Hi I am currently working with AlarmManager. I have written a code given below. As per code the AlarmManager should be triggered after 10 Sec, but here in my code the alarm manager triggers immediately. Please help.
public class MainActivity extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
AlarmManager alarmManager = (AlarmManager)getSystemService(Context.ALARM_SERVICE);
int alarmType = AlarmManager.ELAPSED_REALTIME_WAKEUP;
long timeOrLengthofWait = 10000;
Intent intentToFire = new Intent(this, AlarmReciever.class);
PendingIntent alarmIntent = PendingIntent.getBroadcast(this, 0, intentToFire, 0);
alarmManager.set(alarmType, timeOrLengthofWait, alarmIntent);
}
}
And My AlarmReciever Class
public class AlarmReciever extends BroadcastReceiver {
#Override
public void onReceive(Context context, Intent intent) {
String phoneNumberReciever="5556";
String message="Alarm Triggered";
SmsManager sms = SmsManager.getDefault();
sms.sendTextMessage(phoneNumberReciever, null, message, null, null);
Toast.makeText(context," A message has been sent", Toast.LENGTH_LONG).show();
Log.d("Alarm ", "Alarm Has been triggered and sms send");
}
}
I have Already added required permissions in manifest.
You are using an alarm type of ELAPSED_REALTIME_WAKEUP. That means that the second parameter to set() must be the number of milliseconds from now, where now is expressed as SystemClock.elapsedRealtime().
If your goal is to have this occur 10000 milliseconds from the time you make the set() call, that set() call should be:
alarmManager.set(alarmType, SystemClock.elapsedRealtime()+timeOrLengthofWait, alarmIntent);
If you are creating PendingIntent of an alarm for past time it will be fired immediately. Example - Schedule alarm for today 8AM but executing code around 11AM will fire immediately.
Solution:
cal.add(Calendar.DATE, 1);
long delay = 24 * 60 * 60 * 1000;
alarmManager.setRepeating(AlarmManager.RTC_WAKEUP, cal.getTimeInMillis(), delay,pendingIntent);`
This will fire the event on next day at specified time (i.e 8AM);