Android ScrollView setting focus on top

ScrollViewTop.java

Instead of: 
    ScrollView main = (ScrollView) findViewById(R.id.main); 
    main.scrollTo(0,0); 

I used: 
    final ScrollView main = (ScrollView) findViewById(R.id.main); 
    main.post(new Runnable() { 
        public void run() { 
            main.scrollTo(0,0); 
        } 
    });