Java ArrayList上的IndexOutOfBoundsException

出于某种原因，此方法在我的ArrayList的第一个位置返回viewType=2。这是因为0除以5不产生余数吗？如果我设置&&position！=0而不是1我得到java.lang.IndexOutOfBoundsException:索引0无效，大小为0

理想情况下，我会让我的广告放置viewType=2每隔25个位置出现一次，不包括第一个位置。我该怎么做

编辑

加载行回收适配器：

---

我想你只需要这样做：

private static final int VIEW_TYPE_MARKET_FEED = 0;
private static final int VIEW_TYPE_AD = 1;

...

@Override
public int getItemViewType(int position) {
    int viewType = VIEW_TYPE_MARKET_FEED;
    if (position % 6 == 5) {
        viewType = VIEW_TYPE_AD;
    }
    return viewType;
}

因为您的视图类型不能为2，因为：

另外，在方法public void onBindViewHolderRecyclErrorView.ViewHolder ViewHolder，int position中，更改行：

bindMarketFeedItemView((MarketFeedViewHolder) viewHolder, position);

与：

---

为了删除已插入的添加项。

请放置整个适配器类代码。好的，我将其全部粘贴到了中。我还添加了错误。如果设置了if位置，则错误出现在BindViewHolder而不是getItemViewTypeIf！=1&&position%5==0一切正常，但没有其他组合可以工作。我是否应该将ViewType更改为0和1而不是1和2？好的，无论哪种方式，我仍然获得java.lang.IndexOutOfBoundsException:无效索引0，大小为0实际上崩溃出现在第94行，应该是：final Feed feedDesign=feedItems.getposition；。你的feedItems列表似乎是空的。是的，我看到了这一点，我一直在试图弄清楚为什么会永远。很奇怪，它不应该崩溃。如果删除&&position>0，请检查是否没有项目丢失，因为position-position/6要求在第一个位置没有广告。

    java.lang.IndexOutOfBoundsException: Invalid index 0, size is 0
         at java.util.ArrayList.throwIndexOutOfBoundsException(ArrayList.java:255)
         at java.util.ArrayList.get(ArrayList.java:308)
         at com.elgami.market.MarketFeedRecyclerAdapter.bindMarketFeedItemView(MarketFeedRecyclerAdapter.java:94)
         at com.elgami.market.MarketFeedRecyclerAdapter.onBindViewHolder(MarketFeedRecyclerAdapter.java:79)
         at android.support.v7.widget.RecyclerView$Adapter.onBindViewHolder(RecyclerView.java:5768)
         at android.support.v7.widget.RecyclerView$Adapter.bindViewHolder(RecyclerView.java:5801)
         at android.support.v7.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:5037)
         at android.support.v7.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:4913)
         at android.support.v7.widget.LinearLayoutManager$LayoutState.next(LinearLayoutManager.java:2029)
         at android.support.v7.widget.LinearLayoutManager.layoutChunk(LinearLayoutManager.java:1414)
         at android.support.v7.widget.LinearLayoutManager.fill(LinearLayoutManager.java:1377)
         at android.support.v7.widget.LinearLayoutManager.onLayoutChildren(LinearLayoutManager.java:578)
         at android.support.v7.widget.RecyclerView.dispatchLayoutStep2(RecyclerView.java:3260)
         at android.support.v7.widget.RecyclerView.dispatchLayout(RecyclerView.java:3069)
         at android.support.v7.widget.RecyclerView.onLayout(RecyclerView.java:3518)
         at android.view.View.layout(View.java:16636)
         at android.view.ViewGroup.layout(ViewGroup.java:5437)
         at android.support.v4.widget.SwipeRefreshLayout.onLayout(SwipeRefreshLayout.java:598)
         at android.view.View.layout(View.java:16636)
         at android.view.ViewGroup.layout(ViewGroup.java:5437)
         at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1743)
         at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1586)
         at android.widget.LinearLayout.onLayout(LinearLayout.java:1495)
         at android.view.View.layout(View.java:16636)
         at android.view.ViewGroup.layout(ViewGroup.java:5437)
         at android.widget.RelativeLayout.onLayout(RelativeLayout.java:1079)
         at android.view.View.layout(View.java:16636)
         at android.view.ViewGroup.layout(ViewGroup.java:5437)
         at android.widget.FrameLayout.layoutChildren(FrameLayout.java:336)
         at android.widget.FrameLayout.onLayout(FrameLayout.java:273)
         at android.view.View.layout(View.java:16636)
         at android.view.ViewGroup.layout(ViewGroup.java:5437)
         at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1743)
         at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1586)
         at android.widget.LinearLayout.onLayout(LinearLayout.java:1495)
         at android.view.View.layout(View.java:16636)
         at android.view.ViewGroup.layout(ViewGroup.java:5437)
         at android.widget.FrameLayout.layoutChildren(FrameLayout.java:336)
         at android.widget.FrameLayout.onLayout(FrameLayout.java:273)
         at android.view.View.layout(View.java:16636)
         at android.view.ViewGroup.layout(ViewGroup.java:5437)
         at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1743)
         at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1586)
         at android.widget.LinearLayout.onLayout(LinearLayout.java:1495)
         at android.view.View.layout(View.java:16636)
         at android.view.ViewGroup.layout(ViewGroup.java:5437)
         at android.widget.FrameLayout.layoutChildren(FrameLayout.java:336)
         at android.widget.FrameLayout.onLayout(FrameLayout.java:273)
         at com.android.internal.policy.PhoneWindow$DecorView.onLayout(PhoneWindow.java:2678)
         at android.view.View.layout(View.java:16636)
         at android.view.ViewGroup.layout(ViewGroup.java:5437)
         at android.view.ViewRootImpl.performLayout(ViewRootImpl.java:2171)
         at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1931)
         at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1107)
         at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:6013)
         at android.view.Choreographer$CallbackRecord.run(Choreographer.java:858)
         at android.view.Choreographer.doCallbacks(Choreographer.java:670)
        at android.view.Choreographe

public abstract class LoadingRowRecyclerAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {

    public static final int ROW_VIEW_TYPE_LOADING = 72398; // obscure number
    private boolean mContainsLoadingRow;

    protected abstract int getContentDataSize();

    protected abstract int getViewType(int position);

    @Override
    public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        switch (viewType) {
            case ROW_VIEW_TYPE_LOADING:
                return new LoadingViewHolder(LayoutInflater.from(parent.getContext()).inflate(R.layout.loading_row, parent, false));
        }

        throw new IllegalArgumentException("viewType is not ROW_VIEW_TYPE_LOADING. You must handle all other values of viewType (defined by getViewType) before calling super.");
    }

    @Override
    public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) {
        // empty
    }

    @Override
    public final int getItemCount() {
        return mContainsLoadingRow ? (getContentDataSize() + 1) : getContentDataSize();
    }

    @Override
    public int getItemViewType(int position) {
        return (position == getContentDataSize()) ? ROW_VIEW_TYPE_LOADING : getViewType(position);
    }

    /**
     * Sets a boolean which is used by getItemCount and in turn getItemViewType to determine which view type the row should be (loading view vs. other view).
     * Should only be called when there is more results to load in an upcoming api request (determined by calling fragment).
     */
    public void toggleLoadingRowOn() {
        mContainsLoadingRow = true;
    }

    /**
     * Checks to see if a loading row exists by checking an instance boolean and removes the row / clears the boolean.
     * This helps to 'replace' a loading row with a different row.
     */
    public void toggleLoadingRowOff() {
        if (mContainsLoadingRow) {
            mContainsLoadingRow = false;

            // removes the loading row explicitly instead of allowing it to be 'pushed' down when new user suggestion rows are added.
            // this is only required to maintain consistency with the rest of the app.
            int position = getContentDataSize();
            if (position >= 0) {
                notifyItemRemoved(position);
            }
        }
    }

    protected class LoadingViewHolder extends RecyclerView.ViewHolder {

        public LoadingViewHolder(View v) {
            super(v);
        }
    }
}

public abstract class EndlessRecyclerOnScrollListener extends RecyclerView.OnScrollListener {

    private static final int VISIBLE_THRESHOLD = 5; // The minimum amount of items to have below your current scroll position before loading more
    private LinearLayoutManager mLinearLayoutManager;

    public abstract void onLoadMore();

    public EndlessRecyclerOnScrollListener(LinearLayoutManager linearLayoutManager) {
        this.mLinearLayoutManager = linearLayoutManager;
    }

    @Override
    public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
        super.onScrolled(recyclerView, dx, dy);

        int totalItemCount = mLinearLayoutManager.getItemCount();
        int firstVisibleItem = mLinearLayoutManager.findFirstVisibleItemPosition();
        int visibleItemCount = recyclerView.getChildCount();

        int lastItemVisible = firstVisibleItem + visibleItemCount;

        // once the last visible item is within VISIBLE_THRESHOLD from the bottom, we want to load more
        if ((totalItemCount - lastItemVisible) <= VISIBLE_THRESHOLD) {
            onLoadMore();
        }
    }
}

java.lang.IndexOutOfBoundsException: Invalid index 0, size is 0
   at java.util.ArrayList.throwIndexOutOfBoundsException(ArrayList.java:255)
   at java.util.ArrayList.get(ArrayList.java:308)
   at com.elgami.market.MarketFeedRecyclerAdapter.bindMarketFeedItemView(MarketFeedRecyclerAdapter.java:93)
   at com.elgami.market.MarketFeedRecyclerAdapter.onBindViewHolder(MarketFeedRecyclerAdapter.java:78)
   at android.support.v7.widget.RecyclerView$Adapter.onBindViewHolder(RecyclerView.java:5768)
   at android.support.v7.widget.RecyclerView$Adapter.bindViewHolder(RecyclerView.java:5801)
   at android.support.v7.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:5037)
   at android.support.v7.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:4913)
   at android.support.v7.widget.LinearLayoutManager$LayoutState.next(LinearLayoutManager.java:2029)
   at android.support.v7.widget.LinearLayoutManager.layoutChunk(LinearLayoutManager.java:1414)
   at android.support.v7.widget.LinearLayoutManager.fill(LinearLayoutManager.java:1377)
   at android.support.v7.widget.LinearLayoutManager.onLayoutChildren(LinearLayoutManager.java:578)
   at android.support.v7.widget.RecyclerView.dispatchLayoutStep2(RecyclerView.java:3260)
   at android.support.v7.widget.RecyclerView.dispatchLayout(RecyclerView.java:3069)
   at android.support.v7.widget.RecyclerView.onLayout(RecyclerView.java:3518)
   at android.view.View.layout(View.java:16636)
   at android.view.ViewGroup.layout(ViewGroup.java:5437)
   at android.support.v4.widget.SwipeRefreshLayout.onLayout(SwipeRefreshLayout.java:598)
   at android.view.View.layout(View.java:16636)
   at android.view.ViewGroup.layout(ViewGroup.java:5437)
   at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1743)
   at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1586)
   at android.widget.LinearLayout.onLayout(LinearLayout.java:1495)
   at android.view.View.layout(View.java:16636)
   at android.view.ViewGroup.layout(ViewGroup.java:5437)
   at android.widget.RelativeLayout.onLayout(RelativeLayout.java:1079)
   at android.view.View.layout(View.java:16636)
   at android.view.ViewGroup.layout(ViewGroup.java:5437)
   at android.widget.FrameLayout.layoutChildren(FrameLayout.java:336)
   at android.widget.FrameLayout.onLayout(FrameLayout.java:273)
   at android.view.View.layout(View.java:16636)
   at android.view.ViewGroup.layout(ViewGroup.java:5437)
   at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1743)
   at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1586)
   at android.widget.LinearLayout.onLayout(LinearLayout.java:1495)
   at android.view.View.layout(View.java:16636)
   at android.view.ViewGroup.layout(ViewGroup.java:5437)
   at android.widget.FrameLayout.layoutChildren(FrameLayout.java:336)
   at android.widget.FrameLayout.onLayout(FrameLayout.java:273)
   at android.view.View.layout(View.java:16636)
   at android.view.ViewGroup.layout(ViewGroup.java:5437)
   at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1743)
   at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1586)
   at android.widget.LinearLayout.onLayout(LinearLayout.java:1495)
   at android.view.View.layout(View.java:16636)
   at android.view.ViewGroup.layout(ViewGroup.java:5437)
   at android.widget.FrameLayout.layoutChildren(FrameLayout.java:336)
   at android.widget.FrameLayout.onLayout(FrameLayout.java:273)
   at com.android.internal.policy.PhoneWindow$DecorView.onLayout(PhoneWindow.java:2678)
   at android.view.View.layout(View.java:16636)
   at android.view.ViewGroup.layout(ViewGroup.java:5437)
   at android.view.ViewRootImpl.performLayout(ViewRootImpl.java:2171)
   at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1931)
   at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1107)
   at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:6013)
   at android.view.Choreographer$CallbackRecord.run(Choreographer.java:858)
   at android.view.Choreographer.doCallbacks(Choreographer.java:670)
at android.view.Choreograph

private static final int VIEW_TYPE_MARKET_FEED = 0;
private static final int VIEW_TYPE_AD = 1;

...

@Override
public int getItemViewType(int position) {
    int viewType = VIEW_TYPE_MARKET_FEED;
    if (position % 6 == 5) {
        viewType = VIEW_TYPE_AD;
    }
    return viewType;
}

bindMarketFeedItemView((MarketFeedViewHolder) viewHolder, position);

bindMarketFeedItemView((MarketFeedViewHolder) viewHolder, position - position / 6);