我试图在布局中有多个RecyclerViews,但是我收到以下错误：“LayoutManager已经附加到RecyclerView”
@Override
public View onCreateView(LayoutInflater inflater,ViewGroup container,Bundle savedInstanceState) {
// Inflate the layout for this fragment
View view = inflater.inflate(R.layout.fragment_squad,container,false);
Activity parentActivity = getActivity();
final ObservableScrollView scrollView = (ObservableScrollView) view.findViewById(R.id.squad_scrollview);
final RecyclerView gkRecyclerView = (RecyclerView) view.findViewById(R.id.gk_recycler);
final RecyclerView coachRecyclerView = (RecyclerView) view.findViewById(R.id.coach_recycler);
coachRecyclerView.setAdapter(new SquadRecyclerAdapter(parentActivity,getSquadDummyData(0)));
coachRecyclerView.setLayoutManager(new MyLinearLayoutManager(parentActivity,LinearLayoutManager.VERTICAL,false));
coachRecyclerView.setHasFixedSize(false);
gkRecyclerView.setAdapter(new SquadRecyclerAdapter(parentActivity,getSquadDummyData(1)));
gkRecyclerView.setLayoutManager(new MyLinearLayoutManager(parentActivity,false));
gkRecyclerView.setHasFixedSize(false);
scrollView.setTouchInterceptionViewGroup((ViewGroup) parentActivity.findViewById(R.id.container));
if (parentActivity instanceof ObservableScrollViewCallbacks) {
scrollView.setScrollViewCallbacks((ObservableScrollViewCallbacks) parentActivity);
}
return view;
}
XML布局代码是：
<com.github.ksoichiro.android.observablescrollview.ObservableScrollView xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/squad_scrollview"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_margin="@dimen/margin_medium"
>
<LinearLayout
android:id="@+id/squad_container"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@drawable/seasons_scrollview"
android:divider="@drawable/nav_bar_divider"
android:elevation="@dimen/card_elevation"
android:orientation="vertical"
android:showDividers="middle">
<LinearLayout
android:id="@+id/coach_group"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:paddingBottom="@dimen/margin_small"
android:paddingLeft="@dimen/margin_standard"
android:paddingRight="@dimen/margin_standard"
android:paddingTop="@dimen/margin_small">
<TextView
android:id="@+id/squad_coach_header"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Coach"
android:textSize="@dimen/text_size_standard" />
<android.support.v7.widget.RecyclerView
android:id="@+id/coach_recycler"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:paddingTop="@dimen/margin_small"
android:paddingBottom="@dimen/margin_small"
android:scrollbars="none">
</android.support.v7.widget.RecyclerView>
</LinearLayout>
<LinearLayout
android:id="@+id/gk_group"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:paddingBottom="@dimen/margin_small"
android:paddingLeft="@dimen/margin_standard"
android:paddingRight="@dimen/margin_standard"
android:paddingTop="@dimen/margin_small">
<TextView
android:id="@+id/squad_gk_header"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Goalkeepers"
android:textSize="@dimen/text_size_standard" />
<android.support.v7.widget.RecyclerView
android:id="@+id/gk_recycler"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:paddingTop="@dimen/margin_small"
android:paddingBottom="@dimen/margin_small"
android:scrollbars="none">
</android.support.v7.widget.RecyclerView>
</LinearLayout>
<LinearLayout
android:id="@+id/def_group"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:paddingBottom="@dimen/margin_small"
android:paddingLeft="@dimen/margin_standard"
android:paddingRight="@dimen/margin_standard"
android:paddingTop="@dimen/margin_small">
<TextView
android:id="@+id/squad_def_header"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Defense"
android:textSize="@dimen/text_size_standard" />
</LinearLayout>
<LinearLayout
android:id="@+id/mid_group"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:paddingBottom="@dimen/margin_small"
android:paddingLeft="@dimen/margin_standard"
android:paddingRight="@dimen/margin_standard"
android:paddingTop="@dimen/margin_small">
<TextView
android:id="@+id/squad_mid_header"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Midfielders"
android:textSize="@dimen/text_size_standard" />
</LinearLayout>
<LinearLayout
android:id="@+id/for_group"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:paddingBottom="@dimen/margin_small"
android:paddingLeft="@dimen/margin_standard"
android:paddingRight="@dimen/margin_standard"
android:paddingTop="@dimen/margin_small">
<TextView
android:id="@+id/squad_for_header"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Forwards"
android:textSize="@dimen/text_size_standard" />
</LinearLayout>
</LinearLayout>
</com.github.ksoichiro.android.observablescrollview.ObservableScrollView>
MyLinearLayoutManager是我在线查找的自定义LinearLayoutManager,以解决SDK LinearLayoutManager的封装问题.
有什么办法可以在单个布局中有多个RecyclerViews？看来我每个布局不能附加多个LayoutManagers.
任何帮助将是非常欢迎:)
解决方法
我也有这个问题.我的活动使用Tabs,有三个片段,当我去第三个选项卡,并返回到第一个(或第二),这个错误被抛出.
由于构造函数LinearLayoutManager使用活动作为参数(而不是片段),所以Tab键活动在选项卡更改期间保持活动状态.
从类中删除mLinearLayoutManager中的本地字段,并使用弱引用,我可以摆脱这个问题：
之前：
public class MyFragment1 extends Fragment
private LinearLayoutManager linearLayoutManager;
@Override
public void onCreate(Bundle savedInstanceState) {
linearLayoutManager = new LinearLayoutManager(getActivity());
(...)
}
@Override
public View onCreateView(LayoutInflater inflater,Bundle savedInstanceState) {
(...)
mRecyclerView.setLayoutManager(linearLayoutManager);
}
}
我改为：
public class MyFragment1 extends Fragment {
// private LinearLayoutManager linearLayoutManager;
@Override
public void onCreate(Bundle savedInstanceState) {
// linearLayoutManager = new LinearLayoutManager(getActivity());
(...)
}
@Override
public View onCreateView(LayoutInflater inflater,Bundle savedInstanceState) {
(...)
mRecyclerView.setLayoutManager(
new LinearLayoutManager(getActivity()));
}
}
