Question

我正在尝试使用SwipeRefreshLayout来刷新片段中的recyclerview上的JSON数据。我试过了，但结果是数据在刷卡刷新之前没有出现，如果我刷新布局，数据就会循环播放。

这是我的代码：

Fragment1.xml

<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.SwipeRefreshLayout
    android:id="@+id/container"
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

        <android.support.v7.widget.RecyclerView
            android:id="@+id/recycler_view"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:scrollbars="vertical" />

</android.support.v4.widget.SwipeRefreshLayout>

Fragment1.java

public class Fragment1 extends Fragment{
    private SwipeRefreshLayout mSwipeRefreshLayout;
    private RecyclerView recyclerView;
    private DataAdapter adapter;
    private View myFragmentView;

    private String TAG = Tab1.class.getSimpleName();
    private ProgressDialog pDialog;
    // URL to get contacts JSON
    private static String url = "http://sayangoppa.com/ibn/jadwal.php";

    List<jsonContent> listcontent=new ArrayList<>();


    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        myFragmentView = inflater.inflate(R.layout.Fragment1, container, false);

        //SwipeRefreshLayout begin
        mSwipeRefreshLayout = (SwipeRefreshLayout) myFragmentView.findViewById(R.id.container);
        mSwipeRefreshLayout.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener(){
            @Override
            public void onRefresh(){
                new GetContacts().execute();
                mSwipeRefreshLayout.setRefreshing(false);
            }
        });
        return myFragmentView;
}

Answer 1

结果是数据在刷卡刷新
之前不会出现

在滑动之前，你永远不会执行Asynctask ...

例如

    mSwipeRefreshLayout.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener(){
        @Override
        public void onRefresh(){
            listcontent.clear(); // prevent repeating data 
            new GetContacts().execute();
            mSwipeRefreshLayout.setRefreshing(false);
        }
    });
    new GetContacts().execute();  // load before refresh 
    return myFragmentView;
}

如果我刷新布局，数据将循环播放。

你的意思是重复？您需要在添加新数据之前致电listcontent.clear()

在刷卡刷新和循环

1 个答案: