CcTintManager.java 文件源码

public static DrawableWrapper getDrawableWrapper(Drawable drawable) {
    if (drawable instanceof DrawableWrapper) {
        return (DrawableWrapper) drawable;
    } else {
        Drawable.Callback callback = drawable.getCallback();
        if (callback instanceof Drawable) {
            return getDrawableWrapper((Drawable) callback);
        }
    }

    return null;
}