Alarm Manager Example

Question

I want to implement a schedule function in my project. So I Googled for an Alarm manager program but I can`t find any examples.

Can anyone help me with a basic alarm manager program?

Answer 1

This is working code. It wakes CPU every 10 minutes until the phone turns off.

Add to Manifest.xml:

... <uses-permission android:name="android.permission.WAKE_LOCK"></uses-permission> ... <receiver android:process=":remote" android:name=".Alarm"></receiver> ... 

Code in your class:

package yourPackage; import android.app.AlarmManager; import android.app.PendingIntent; import android.content.BroadcastReceiver; import android.content.Context; import android.content.Intent; import android.os.PowerManager; import android.widget.Toast;  public class Alarm extends BroadcastReceiver  {         @Override     public void onReceive(Context context, Intent intent)      {            PowerManager pm = (PowerManager) context.getSystemService(Context.POWER_SERVICE);         PowerManager.WakeLock wl = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "");         wl.acquire();          // Put here YOUR code.         Toast.makeText(context, "Alarm !!!!!!!!!!", Toast.LENGTH_LONG).show(); // For example          wl.release();     }      public void setAlarm(Context context)     {         AlarmManager am =( AlarmManager)context.getSystemService(Context.ALARM_SERVICE);         Intent i = new Intent(context, Alarm.class);         PendingIntent pi = PendingIntent.getBroadcast(context, 0, i, 0);         am.setRepeating(AlarmManager.RTC_WAKEUP, System.currentTimeMillis(), 1000 * 60 * 10, pi); // Millisec * Second * Minute     }      public void cancelAlarm(Context context)     {         Intent intent = new Intent(context, Alarm.class);         PendingIntent sender = PendingIntent.getBroadcast(context, 0, intent, 0);         AlarmManager alarmManager = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);         alarmManager.cancel(sender);     } } 

Set Alarm from Service:

package yourPackage;  import android.app.Service; import android.content.Context; import android.content.Intent; import android.os.IBinder;  public class YourService extends Service {     Alarm alarm = new Alarm();     public void onCreate()     {         super.onCreate();            }      @Override     public int onStartCommand(Intent intent, int flags, int startId)      {         alarm.setAlarm(this);         return START_STICKY;     }     @Override            public void onStart(Intent intent, int startId)     {         alarm.setAlarm(this);     }      @Override     public IBinder onBind(Intent intent)      {         return null;     } } 

If you want to set alarm repeating at phone boot time:

Add permission and the service to Manifest.xml:

<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED"></uses-permission> ... <receiver android:name=".AutoStart">     <intent-filter>         <action android:name="android.intent.action.BOOT_COMPLETED"></action>     </intent-filter> </receiver> ... <service         android:name=".YourService"         android:enabled="true"         android:process=":your_service" > </service> 

And create a new class:

package yourPackage;  import android.content.BroadcastReceiver; import android.content.Context; import android.content.Intent;  public class AutoStart extends BroadcastReceiver {        Alarm alarm = new Alarm();     @Override     public void onReceive(Context context, Intent intent)     {            if (intent.getAction().equals(Intent.ACTION_BOOT_COMPLETED))         {             alarm.setAlarm(context);         }     } }