Android：ListView 和RecyclerView区别

class RecycleBin {
    /**
     * The position of the first view stored in mActiveViews.
     */
    private int mFirstActivePosition;

    /**
     * Views that were on screen at the start of layout. This array is populated at the start of
     * layout, and at the end of layout all view in mActiveViews are moved to mScrapViews.
     * Views in mActiveViews represent a contiguous range of Views, with position of the first
     * view store in mFirstActivePosition.
     */
    private View[] mActiveViews = new View[0];

    /**
     * Unsorted views that can be used by the adapter as a convert view.
     */
    private ArrayList<View>[] mScrapViews;
}

public final class Recycler {
    final ArrayList<ViewHolder> mAttachedScrap = new ArrayList<>();
    final ArrayList<ViewHolder> mCachedViews = new ArrayList<ViewHolder>();
    RecycledViewPool mRecyclerPool;
    private ViewCacheExtension mViewCacheExtension;
}