一只萌萌小番薯
给楼主之前写的代码,将RecycleView 重写成如下:public class RecyclerViewEmptySupport extends RecyclerView { private View emptyView; final private AdapterDataObserver observer = new AdapterDataObserver() { @Override public void onChanged() { checkIfEmpty(); } @Override public void onItemRangeInserted(int positionStart, int itemCount) { checkIfEmpty(); } @Override public void onItemRangeRemoved(int positionStart, int itemCount) { checkIfEmpty(); } }; public RecyclerViewEmptySupport(Context context) { super(context); } public RecyclerViewEmptySupport(Context context, AttributeSet attrs) { super(context, attrs); } public RecyclerViewEmptySupport(Context context, AttributeSet attrs, int defStyle) { super(context, attrs, defStyle); } @Override public void setAdapter(Adapter adapter) { final Adapter oldAdapter = getAdapter(); if (oldAdapter != null) { oldAdapter.unregisterAdapterDataObserver(observer); } super.setAdapter(adapter); if (adapter != null) { adapter.registerAdapterDataObserver(observer); } checkIfEmpty(); } public void setEmptyView(View emptyView) { this.emptyView = emptyView; checkIfEmpty(); } void checkIfEmpty() { if (emptyView != null && getAdapter() != null) { final boolean emptyViewVisible = getAdapter().getItemCount() == 0; emptyView.setVisibility(emptyViewVisible ? VISIBLE : GONE); setVisibility(emptyViewVisible ? GONE : VISIBLE); } }}外部调用的时候执行mRecyclerView.setEmptyView(mEmptyView);即可。