private void applyTextAppearance(Context context, int resId, final TextView[] targetViews) {
        for (TextView view : targetViews) view.setTextAppearance(context, resId);
    }
Sets the padding to be used for the number pad buttons.

@param padding padding in pixels
android/third_party/time-duration-picker/src/main/java/mobi/upod/timedurationpicker/TimeDurationPicker.java