android - 滑动刷新布局 onRefresh 工作但不显示刷新指示器

Question

我已经在我的一个 ListView 上实现了滑动刷新布局，但是当我滑动时 View 没有向下滑动并且图标不可见。尽管它看起来不起作用，但它确实触发了 OnRefresh 监听器。

此外，我认为值得一提的是，我在 fragment 上使用 ListView，因此我在 fragment Activity 中初始化监听器，如下所示。

Swipe Refresh XML

<android.support.v4.widget.SwipeRefreshLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/swipe_refresh_layout"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <ListView
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:id="@+id/listView"
        android:layout_gravity="center_horizontal"
        android:dividerHeight="1sp"
        android:translationZ="5dp"
        android:background="@color/background_gray"
        android:layout_marginLeft="5dp"
        android:layout_marginRight="5dp"
        android:clickable="true"
        />

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

Fragment Activity

    @Override
public void onViewCreated(View view, @Nullable Bundle savedInstanceState) {

    super.onViewCreated(view, savedInstanceState);

    final SwipeRefreshLayout mSwipeRefreshLayout = (SwipeRefreshLayout) getActivity().findViewById(R.id.swipe_refresh_layout);
    ListView lView = (ListView) getActivity().findViewById(R.id.listView);

    mSwipeRefreshLayout.setColorScheme(android.R.color.holo_blue_bright,
            android.R.color.holo_green_light,
            android.R.color.holo_orange_light,
            android.R.color.holo_red_light);

    mSwipeRefreshLayout.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() {
        @Override
        public void onRefresh() {
            mSwipeRefreshLayout.setRefreshing(true);
            ((MainActivity) getActivity()).refresh();
            new Handler().postDelayed(new Runnable() {
                @Override public void run() {
                    mSwipeRefreshLayout.setRefreshing(false);
                }
            }, 5000);




        }
    });
    lView.setOnScrollListener(new AbsListView.OnScrollListener() {
        @Override
        public void onScrollStateChanged(AbsListView absListView, int i) {

        }

        @Override
        public void onScroll(AbsListView absListView, int firstVisibleItem, int visibleItemCount, int totalItemCount) {
            if (firstVisibleItem == 0)
                mSwipeRefreshLayout.setEnabled(true);
            else

                mSwipeRefreshLayout.setEnabled(false);
        }
    });

}

Answer 1

我解决了，看来这是 SwipeRefreshLayout 的当前错误。只有当 Listview 包裹在 FrameLayout 中时，它才会起作用。

<?xml version="1.0" encoding="utf-8"?>

<android.support.v4.widget.SwipeRefreshLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/swipe_refresh_layout"
    android:layout_width="match_parent"
    android:layout_height="match_parent">
    <FrameLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent">
    <ListView
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:id="@+id/listView"
        android:layout_gravity="center_horizontal"
        android:dividerHeight="1sp"
        android:translationZ="5dp"
        android:background="@color/background_gray"
        android:layout_marginLeft="5dp"
        android:layout_marginRight="5dp"
        android:clickable="true"
        />
    </FrameLayout>

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