EditText挡住输入框问题的解决

contactName.setOnClickListener(new OnClickListener() {

        @Override
        public void onClick(View v) {
            mHandler.postDelayed(new Runnable() {
                @Override
                public void run() {
                    scrool_view.fullScroll(ScrollView.FOCUS_DOWN);
                    contactName.setFocusable(true);
                    contactName.requestFocus();
                    contactName.findFocus(); 
                }
            }, 100);
        }
    });