Android Alarm Example

import java.util.Calendar;

import android.app.Activity;
import android.app.AlarmManager;
import android.app.PendingIntent;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;

public class AlarmDemoActivity extends Activity {

private PendingIntent pendingIntent;

/** Called when the activity is first created. */

@Override
public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.main);

Button buttonStart = (Button) findViewById(R.id.startalarm);

Button buttonCancel = (Button) findViewById(R.id.cancelalarm);

buttonStart.setOnClickListener(new Button.OnClickListener() {

@Override
public void onClick(View arg0) {

Intent intent= new Intent(AlarmDemoActivity.this,MyAlarmService.class);
pendingIntent =PendingIntent.getService(AlarmDemoActivity.this,1, intent,1);

AlarmManager manager=(AlarmManager)getSystemService(Context.ALARM_SERVICE);
manager.set(AlarmManager.RTC_WAKEUP, System.currentTimeMillis()+20000, pendingIntent);
//manager.setRepeating(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(), 5*1000, pendingIntent);
}
});

buttonCancel.setOnClickListener(new Button.OnClickListener() {

@Override
public void onClick(View arg0) {

AlarmManager manager=(AlarmManager)getSystemService(Context.ALARM_SERVICE);
manager.cancel(pendingIntent);
}
});

}

}



MyAlarmService.java







import android.app.Service;

import android.content.Intent;

import android.os.IBinder;

import android.widget.Toast;



public class MyAlarmService extends Service {



@Override

public void onCreate() {

// TODO Auto-generated method stub

Toast.makeText(this, "MyAlarmService.onCreate()", Toast.LENGTH_LONG).show();

}



@Override

public IBinder onBind(Intent intent) {

// TODO Auto-generated method stub

Toast.makeText(this, "MyAlarmService.onBind()", Toast.LENGTH_LONG).show();

return null;

}



@Override

public void onDestroy() {

// TODO Auto-generated method stub

super.onDestroy();

Toast.makeText(this, "MyAlarmService.onDestroy()", Toast.LENGTH_LONG).show();

}



@Override

public void onStart(Intent intent, int startId) {

// TODO Auto-generated method stub

super.onStart(intent, startId);

Toast.makeText(this, "MyAlarmService.onStart()", Toast.LENGTH_LONG).show();

}



@Override

public boolean onUnbind(Intent intent) {

// TODO Auto-generated method stub

Toast.makeText(this, "MyAlarmService.onUnbind()", Toast.LENGTH_LONG).show();

return super.onUnbind(intent);

}



}