RecyclerView之EmptyView展示

SwipeRefreshLayout+RecyclerView之EmptyView展示

    在使用RecyclerView的时候,有时是需要在没有数据的时候展示EmptyView的。
类似淘宝上的没有相关订单的提示如图,

记录一下实现这个功能的方法:

创建EmptyView的布局---layout_empty_view.xml




    

    

    


创建EmptyView的 Holder ----EmptyViewHolder.java

public class EmptyViewHolder extends RecyclerView.ViewHolder {
    @BindView(R.id.iv_empty)
    public ImageView img;
    @BindView(R.id.empty_tip_tv)
    public TextView tipTv;
    @BindView(R.id.empty_msg_tv)
    public TextView msgTv;

    public EmptyViewHolder(View itemView) {
        super(itemView);
        ButterKnife.bind(this, itemView);
    }
}

创建Adapter---RecyclerAdapter.java

public class RecyclerAdapter extends RecyclerView.Adapter {
    private Context mContext;
    private List list;
    private String status;
    private static final int EMPTY_VIEW = 1;

    public RecyclerAdapter(Context context, List list, String status) {
        this.mContext = context;
        this.list = list;
        this.status = status;
    }

    @Override
    public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        LayoutInflater inflater = LayoutInflater.from(parent.getContext());
        if (viewType == EMPTY_VIEW) {
            View view = inflater.inflate(R.layout.layout_empty_view, parent, false);
            return new EmptyViewHolder(view);
        } else {
            View view = inflater.inflate(R.layout.activity_wait_goods_parent_item, parent, false);
            return new OtherViewHodler(view);
        }
    }

    @Override
    public void onBindViewHolder(RecyclerView.ViewHolder itemHolder, int position) {
        Log.d("TAG",itemHolder);
        if (itemHolder instanceof OtherViewHodler) {
            OtherViewHodler holder = (OtherViewHodler) itemHolder;
            // 其他操作
        }
    }

    @Override
    public int getItemCount() {
        return list.size() > 0 ? list.size() : 1;
    }

    @Override
    public int getItemViewType(int position) {
        if (list.size() == 0) {
            return EMPTY_VIEW;
        }
        return super.getItemViewType(position);
    }
}

 
 

关键部位就在 getItemViewType(int position) 方法,
该方法默返回0
在该方法中判断数据源的个数,为空的时候返回为空的值,加载不同的ViewHolder

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