how to change system alarm setting text dynamic

Question

Hi I'm creating a app to display the count of alarm that comes from services and i've to update that when my screen is lock.

but i am getting a out put but it is not updating can any one help me

this is a code i used for display the text in lock screen

 String message ="New alarm :"+ alarmnew.size()+"\n old alarm :"+alarmold.size();
 Settings.System.putString(this.getContentResolver(),
         Settings.System.NEXT_ALARM_FORMATTED, message);

Answer 1

guys i've finally found the answer to this prob thanks to @dd619 his concept

the concept i used is that first i need to unlock the screen then update display and again lock the screen.

this is my final coding for this app

{
Context context= getApplicationContext();

KeyguardManager _guard = (KeyguardManager) context.getSystemService(Context.KEYGUARD_SERVICE);
KeyguardLock _keyguardLock = _guard.newKeyguardLock("KeyguardLockWrapper");
        //to disable
_keyguardLock.disableKeyguard();


 String message ="New alarm :"+ alarmnew.size()+"\n old alarm :"+alarmold.size();
 Settings.System.putString(this.getContentResolver(),
         Settings.System.NEXT_ALARM_FORMATTED, message);

         //to enable
 _keyguardLock.reenableKeyguard();
}