focus on second edittext only if first is non-empty android

Question

Currently I have two edit-text,suppose I want to make validation for empty edittext check.What is better way for runtime validation.

My code is;

Answer 1

Try this :

EDIT :

        final EditText ev1,ev2,ev3,ev4,ev5,ev6;

        ev1 = (EditText) findViewById(R.id.editText1);
        ev2 = (EditText) findViewById(R.id.editText2);
        ev3 = (EditText) findViewById(R.id.editText3);
        ev4 = (EditText) findViewById(R.id.editText4);
        ev5 = (EditText) findViewById(R.id.editText5);
        ev6 = (EditText) findViewById(R.id.editText6);

        setValidateAction(ev2);
        setValidateAction(ev3);
        setValidateAction(ev4);
        setValidateAction(ev5);
        setValidateAction(ev6);

Declare this method :

public void setValidateAction(final EditText edit_action) {
        edit_action.setOnFocusChangeListener(new OnFocusChangeListener() {
            public void onFocusChange(View v, boolean hasFocus) {
                if(hasFocus && ev1.getText().length()==0){    
                    ev1.requestFocus();               
                }
            }
        });
}            

Thanks.