public void start(){
    	 new Thread(new Runnable() {

             public void run() {
                while(true){
             	   try {
             		   Log.d("", "123");

 					Thread.sleep(1000);
 				} catch (InterruptedException e) {
 					// TODO Auto-generated catch block
 					e.printStackTrace();
 				}
                }
                             }
         });

    }