How to start Service using Alarm Manager in Android?

Question

In my application, I am trying to start a service using Alarm manager. When I am clicking a button service should start in a particular time which I am giving. My code for Alarm Manager is given below:

public void onClick(View view)  {     if(view == m_btnActivate)     {         Calendar cur_cal = Calendar.getInstance();         cur_cal.setTimeInMillis(System.currentTimeMillis());         cur_cal.add(Calendar.SECOND, 50);         Log.d("Testing", "Calender Set time:"+cur_cal.getTime());         Intent intent = new Intent(DashboardScreen.this, ServiceClass.class);         Log.d("Testing", "Intent created");         PendingIntent pi = PendingIntent.getService(DashboardScreen.this, 0, intent, 0);         AlarmManager alarm_manager = (AlarmManager)getSystemService(Context.ALARM_SERVICE);         alarm_manager.set(AlarmManager.RTC, cur_cal.getTimeInMillis(), pi);         Log.d("Testing", "alarm manager set");         Toast.makeText(this, "ServiceClass.onCreate()", Toast.LENGTH_LONG).show();     } } 

And bellow is my Service Class:

    public class ServiceClass extends Service{      @Override     public void onCreate() {         // TODO Auto-generated method stub         super.onCreate();         Log.d("Testing", "Service got created");         Toast.makeText(this, "ServiceClass.onCreate()", Toast.LENGTH_LONG).show();     }      @Override     public IBinder onBind(Intent arg0) {         // TODO Auto-generated method stub         return null;     }      @Override     public void onDestroy() {         // TODO Auto-generated method stub         super.onDestroy();     }      @Override     public void onStart(Intent intent, int startId) {         // TODO Auto-generated method stub         super.onStart(intent, startId);         Toast.makeText(this, "ServiceClass.onStart()", Toast.LENGTH_LONG).show();         Log.d("Testing", "Service got started");     }  } 

If the service will start it should print the log messages in the service class. But it is not showing. Can any one help?

Answer 1

This is what I have used, for starting service after 30 seconds from current time,

Intent intent = new Intent(DashboardScreen.this, ServiceClass.class); PendingIntent pintent = PendingIntent.getService(DashboardScreen.this, 0, intent, 0); AlarmManager alarm = (AlarmManager)getSystemService(Context.ALARM_SERVICE); alarm.setRepeating(AlarmManager.RTC_WAKEUP, cal.getTimeInMillis(), 30*1000, pintent); 

Try it, and let me know what happen...

EDIT:

In your manifest.xml file

 <service android:enabled="true" android:name=".ServiceClass" /> 

Answer 2

I know this is an old question, but just to help the people from google, here is how you can keep your service alive.

    Intent ishintent = new Intent(this, HeartBeat.class);     PendingIntent pintent = PendingIntent.getService(this, 0, ishintent, 0);     AlarmManager alarm = (AlarmManager)getSystemService(Context.ALARM_SERVICE);     alarm.cancel(pintent);     alarm.setRepeating(AlarmManager.RTC_WAKEUP, System.currentTimeMillis(),5000, pintent); 

The service is killed and restarted every 5 seconds.