TintManager.java 文件源码

public static void tintViewDrawable(View view, Drawable drawable, TintInfo tint) {
    if (view == null || drawable == null) return;
    if (tint.mHasTintList || tint.mHasTintMode) {
        drawable.mutate();
        if (drawable instanceof ColorDrawable) {
            ((ColorDrawable) drawable).setColor(ThemeUtils.replaceColor(view.getContext(), tint.mTintList.getColorForState(view.getDrawableState(), tint.mTintList.getDefaultColor())));
        } else {
            drawable.setColorFilter(createTintFilter(view.getContext(),
                    tint.mHasTintList ? tint.mTintList : null,
                    tint.mHasTintMode ? tint.mTintMode : DEFAULT_MODE,
                    view.getDrawableState()));
        }
    } else {
        drawable.clearColorFilter();
    }

    if (Build.VERSION.SDK_INT <= 23) {
        // On Gingerbread, GradientDrawable does not invalidate itself when it's ColorFilter
        // has changed, so we need to force an invalidation
        drawable.invalidateSelf();
    }
}