Google Android - это несложно

Код: Выделить всё

int mTimeSecond, mTimeMinute, mTimeHour;

final Handler timerHandler = new Handler(); 
		Runnable timerRunnable = new Runnable() { 
		    @Override
		    public void run() {
				    	
		    	mTimeSecond = mTimeSecond + 1;
		    	if (mTimeSecond >= 60) {
		    		mTimeSecond = 0; 
		    		mTimeMinute = mTimeMinute + 1;		    	
		    	}
		    	if (mTimeMinute >= 60) {
		    		mTimeMinute = 0;
		    		mTimeHour = mTimeHour + 1;		    	
		    	}
		 
		    	adapter.notifyDataSetChanged();
		    	
		        timerHandler.postDelayed(this, 1000);   
		    }
		}; 
		 
		timerHandler.postDelayed(timerRunnable, 500);