Android_RecyclerView&SwipeRefreshLayout_swiperefreshlayout不显示_解决

@作者 : 西野奈留
@博客：http://blog.csdn.net/narunishino
-2016/5/18-

沉重的教训啊！

昨天下午搞了一个下午，然后到现在才解决…..真是郁闷…

具体情况：下拉的时候swiperefreshlayout不显示。

布局文件：.support.v4.widget.SwipeRefreshLayout        android:id="@+id/swipeRefreshLayout"        android:layout_width="match_parent"        android:layout_height="match_parent">        .support.v7.widget.RecyclerView            android:id="@+id/recyclerView"            android:layout_width="match_parent"            android:layout_height="match_parent"          />.support.v4.widget.SwipeRefreshLayout>

上面的布局代码明明没有错啊，为什么swiperefreshlayout就是不显示呢。

原因是：在MainActivity的onCreat中，我只写了以下的代码：

    private void initRecycler() {        RecyclerView recyclerView = (RecyclerView) findViewById(R.id.recyclerView);        if (recyclerView != null) {            recyclerView.setLayoutManager(new LinearLayoutManager(this));            //真是坑....            //recyclerView.setAdapter(new RecyclerAdapter(this));        }    }    private void init() {        final SwipeRefreshLayout swipeRefreshLayout = (SwipeRefreshLayout) findViewById(R.id.swipeRefreshLayout);        if (swipeRefreshLayout != null) {            swipeRefreshLayout.setColorSchemeColors(Color.RED, Color.GREEN, Color.BLUE, Color.YELLOW);            swipeRefreshLayout.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() {                @Override                public void onRefresh() {                    swipeRefreshLayout.postDelayed(new Runnable() {                        @Override                        public void run() {                            swipeRefreshLayout.setRefreshing(false);                        }                    }, 5000);                }            });        }    }

，没有加上adapter….
加了adapter就没事了….我了个去！！！！！！！

啊啊啊啊啊啊啊啊。。。。。。。。。。。。。。。。。。。。。。。。。。。

//RecyclerAdapter.javapublic class RecyclerAdapter extends RecyclerView.Adapter<RecyclerAdapter.MyHolder> {    private Context mContext;    private List mData;    public RecyclerAdapter(Context context) {        mContext = context;        mData = new ArrayList<>();        for (int i = 0; i < 5; i++) {            mData.add(i + "行");        }    }    @Override    public MyHolder onCreateViewHolder(ViewGroup parent, int viewType) {        MyHolder holder = new MyHolder(LayoutInflater.from(mContext).inflate(R.layout.tv_item, parent, false));        return holder;    }    @Override    public void onBindViewHolder(MyHolder holder, int position) {        holder.tv.setText(mData.get(position));    }    @Override    public int getItemCount() {        return mData.size();    }    class MyHolder extends RecyclerView.ViewHolder {        TextView tv;        public MyHolder(View itemView) {            super(itemView);            tv = (TextView) itemView.findViewById(R.id.tvItem);        }    }}

//tv_item.xml<?xml version="1.0" encoding="utf-8"?><TextView xmlns:android="http://schemas.android.com/apk/res/android"    android:id="@+id/tvItem"    android:layout_width="match_parent"    android:layout_height="50dp">TextView>

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