MDTintHelper.java 文件源码

public static void setTint(@NonNull RadioButton radioButton,
                           @NonNull ColorStateList colors) {
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
        radioButton.setButtonTintList(colors);
    } else {
        Drawable radioDrawable = ContextCompat.getDrawable(radioButton.getContext(),
                R.drawable.abc_btn_radio_material);
        Drawable d = DrawableCompat.wrap(radioDrawable);
        DrawableCompat.setTintList(d, colors);
        radioButton.setButtonDrawable(d);
    }
}