Change color of a radio button

Question

I am developing an quiz based app. There will be 1 question and 4 option(radio buttons). If user select any wrong answer then I want to turn that radio button color to Red.

Answer 1

To change RadioButton button colour programmatically, and works on api level < 21, should use AppCompatRadioButton instead of RadioButton:

(otherwise will warn setbuttontintlist requrie api level 21)

import android.support.v7.widget.AppCompatRadioButton;

AppCompatRadioButton radioButton = new AppCompatRadioButton(getActivity());
radioButton.setSupportButtonTintList(
        ContextCompat.getColorStateList(getActivity(),
        R.color.single_choice_state_list));

single_choice_state_list.xml