我有一个非常复杂的UI,需要多个嵌套的列表,以此类推。
目前我有一个外部RecyclerView
,里面有另一个RecyclerView
,实际上是可扩展的Recycler(是这个组件的重构版本)。它是一个三层次的层次结构。
我的问题是没有任何东西被回收。它们不在NestedScrollView
中。它们从创建时就会加载到内存中,onBindViewHolder
永远不会再次触发...结果滚动非常粗糙。
有什么建议来解决这个问题吗?提前感谢。
外部recycler
<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fillViewport="true"
android:background="@color/color_background_expandable_list">
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar">
<android.support.v7.widget.Toolbar
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary"
app:layout_scrollFlags="scroll|enterAlways|snap"
app:popupTheme="@style/ThemeOverlay.AppCompat.Light"
app:contentInsetStart="0dp">
<android.support.v7.widget.RecyclerView
android:id="@+id/rcv_bet_sports"
android:scrollbars="none"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#3D464F" />
</android.support.v7.widget.Toolbar>
</android.support.design.widget.AppBarLayout>
<android.support.v7.widget.RecyclerView
android:id="@+id/rcv_live"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="10dp"
android:layout_marginBottom="10dp"
android:layout_marginRight="5dp"
android:layout_marginLeft="5dp"
android:descendantFocusability="blocksDescendants"
app:layout_behavior="@string/appbar_scrolling_view_behavior" />
</android.support.design.widget.CoordinatorLayout>
可展开的内部循环视图
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<android.support.v7.widget.RecyclerView
android:id="@+id/rcv_live"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</FrameLayout>
更新 这是主要的外部适配器。我重写了GetItemViewId方法。那会影响回收机制吗?
class LivePageAdapter : RecyclerView.Adapter
{
LiveContentPresenter _ContentPresenter;
RecyclerView.RecycledViewPool _SharedPool = new RecyclerView.RecycledViewPool();
public LivePageAdapter(LiveContentPresenter contentPresenter)
{
_ContentPresenter = contentPresenter;
}
public void AddWidget(PageWidgetModel widgetModel)
{
_ContentPresenter.Add(widgetModel);
}
public override int ItemCount => _ContentPresenter.WidgetCount;
public override void OnBindViewHolder(RecyclerView.ViewHolder holder, int position)
{
_ContentPresenter.BindWidgetOnRow((LiveListViewHolder)holder, position);
}
public override RecyclerView.ViewHolder OnCreateViewHolder(ViewGroup parent, int viewType)
{
var type = (WidgetType)viewType;
switch (type)
{
case WidgetType.Carousel:
return null;
case WidgetType.HotRightNow:
return null;
case WidgetType.ExpandableRecycler:
View liveListItem = LayoutInflater.From(parent.Context).Inflate(Resource.Layout.widget_row_live_list, parent, false);
return new LiveListViewHolder(liveListItem, _SharedPool);
default:
return null;
}
}
public override long GetItemId(int position)
{
return _ContentPresenter.WidgetModels[position].GetHashCode();
}
public override void OnViewRecycled(Java.Lang.Object holder)
{
base.OnViewRecycled(holder);
}
public override int GetItemViewType(int position)
{
return _ContentPresenter.GetWidgetType(position);
}
}
@+id/rcv_live
。 - Amjad KhanonViewRecycled()
方法进行调试吗? - Gotiasits