ViewFinderImpl.java 文件源码

@NonNull
private View findViewById(@IdRes final int ID) {
    final View cachedView = mCachedViews.get(ID);
    if (cachedView != null) {
        return cachedView;
    }
    final View view = mItemView.findViewById(ID);
    mCachedViews.put(ID, view);
    return view;
}