当我将RecyclerView放入NestedScrollView时,然后onBindViewHolder调用所有行,比如说我有一个大小为30的列表,那么即使没有滚动,也会同时为所有30行调用onBindViewHolder
RecyclerView list;
LinearLayoutManager layoutManager = new LinearLayoutManager(getContext());
list.setLayoutManager(layoutManager);
layoutManager.setAutoMeasureEnabled(true);
list.setNestedScrollingEnabled(false);
list.addItemDecoration(new VerticalSpaceItemDecoration(5));
list.setAdapter(adapter);
我的xml是
<android.support.v4.widget.NestedScrollView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:fillViewport="true"
android:scrollbars="none"
app:layout_behavior="@string/appbar_scrolling_view_behavior">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@color/grey">
<android.support.v7.widget.RecyclerView
android:id="@+id/recycler_views"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_below="@+id/info"
android:layout_marginBottom="5dp"
android:layout_marginLeft="5dp"
android:layout_marginRight="5dp"
android:textAlignment="center"
android:visibility="visible"
/>
但如果我删除NestedScrollView它正常工作.
解决方法
高度问题引起的问题.
1)编辑NestedScrollView& RecyclerView如下：
<android.support.v4.widget.NestedScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fillViewport="true"
......
app:layout_behavior="@string/appbar_scrolling_view_behavior">
.......
<android.support.v7.widget.RecyclerView
android:id="@+id/recycler_views"
android:layout_width="match_parent"
android:layout_height="wrap_content"
.....
/>
2)确保你编译了’com.android.support:recyclerview-v7:23.2.1′
