How to use

getButtonDrawable

method

in

android.widget.RadioButton

/**
 * <b>Note, that on pre {@link android.os.Build.VERSION_CODES#LOLLIPOP LOLLIPOP} Android versions
 * this method will return an instance of {@link TintDrawable TintDrawable} if tint has been applied
 * via {@link #setButtonTintList(ColorStateList)}.</b>
 * <p>
 * The original wrapped drawable can be obtained via {@link TintDrawable#getDrawable()}.
 */
@Nullable
@Override
public Drawable getButtonDrawable() {
  return super.getButtonDrawable();
}

/**
 * <b>Note, that on pre {@link android.os.Build.VERSION_CODES#LOLLIPOP LOLLIPOP} Android versions
 * this method will return an instance of {@link TintDrawable TintDrawable} if tint has been applied
 * via {@link #setButtonTintList(ColorStateList)}.</b>
 * <p>
 * The original wrapped drawable can be obtained via {@link TintDrawable#getDrawable()}.
 */
@Nullable
@Override
public Drawable getButtonDrawable() {
  return super.getButtonDrawable();
}