android.view.ViewStub cannot be cast to android.view.ViewGroup
来源:互联网 发布:java 进程同步 编辑:程序博客网 时间:2024/05/23 19:45
12-13 09:44:53.985 22232-22232/com.moreunion.zhenghao E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.moreunion.zhenghao, PID: 22232
android.view.InflateException: Binary XML file line #13: android.view.ViewStub cannot be cast to android.view.ViewGroup
Caused by: java.lang.ClassCastException: android.view.ViewStub cannot be cast to android.view.ViewGroup
at android.view.LayoutInflater.rInflate(LayoutInflater.java:870)
at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:832)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:872)
at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:832)
at android.view.LayoutInflater.inflate(LayoutInflater.java:518)
at android.view.LayoutInflater.inflate(LayoutInflater.java:426)
at com.example.yilibrary.common.CommonRecycleViewHolder.get(CommonRecycleViewHolder.java:38)
at com.example.yilibrary.common.CommonRecycleViewAdapter.onCreateViewHolder(CommonRecycleViewAdapter.java:102)
at com.example.yilibrary.common.CommonRecycleViewAdapter.onCreateViewHolder(CommonRecycleViewAdapter.java:26)
at android.support.v7.widget.RecyclerView$Adapter.createViewHolder(RecyclerView.java:6411)
at android.support.v7.widget.RecyclerView$Recycler.tryGetViewHolderForPositionByDeadline(RecyclerView.java:5597)
at android.support.v7.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:5482)
at android.support.v7.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:5478)
at android.support.v7.widget.LinearLayoutManager$LayoutState.next(LinearLayoutManager.java:2215)
at android.support.v7.widget.LinearLayoutManager.layoutChunk(LinearLayoutManager.java:1542)
at android.support.v7.widget.LinearLayoutManager.fill(LinearLayoutManager.java:1502)
at android.support.v7.widget.LinearLayoutManager.onLayoutChildren(LinearLayoutManager.java:595)
at android.support.v7.widget.RecyclerView.dispatchLayoutStep2(RecyclerView.java:3625)
at android.support.v7.widget.RecyclerView.dispatchLayout(RecyclerView.java:3354)
at android.support.v7.widget.RecyclerView.onLayout(RecyclerView.java:3886)
at android.view.View.layout(View.java:17688)
at android.view.ViewGroup.layout(ViewGroup.java:5631)
at android.widget.FrameLayout.layoutChildren(FrameLayout.java:325)
at android.widget.FrameLayout.onLayout(FrameLayout.java:261)
at android.view.View.layout(View.java:17688)
at android.view.ViewGroup.layout(ViewGroup.java:5631)
at android.support.v4.widget.SwipeRefreshLayout.onLayout(SwipeRefreshLayout.java:614)
at android.view.View.layout(View.java:17688)
at android.view.ViewGroup.layout(ViewGroup.java:5631)
at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1762)
at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1606)
at android.widget.LinearLayout.onLayout(LinearLayout.java:1515)
at android.view.View.layout(View.java:17688)
at android.view.ViewGroup.layout(ViewGroup.java:5631)
at com.example.yilibrary.view.improvement.ImPullLoadMoreRefreshLayout.onLayout(ImPullLoadMoreRefreshLayout.java:602)
at android.view.View.layout(View.java:17688)
at android.view.ViewGroup.layout(ViewGroup.java:5631)
at android.widget.FrameLayout.layoutChildren(FrameLayout.java:325)
at android.widget.FrameLayout.onLayout(FrameLayout.java:261)
at android.view.View.layout(View.java:17688)
at android.view.ViewGroup.layout(ViewGroup.java:5631)
at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1762)
at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1606)
at android.widget.LinearLayout.onLayout(LinearLayout.java:1515)
at android.view.View.layout(View.java:17688)
at android.view.ViewGroup.layout(ViewGroup.java:5631)
at android.widget.FrameLayout.layoutChildren(FrameLayout.java:325)
at android.widget.FrameLayout.onLayout(FrameLayout.java:261)
at android.view.View.layout(View.java:17688)
at android.view.ViewGroup.layout(ViewGroup.java:5631)
at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1762)
at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1606)
12-13 09:44:53.986 22232-22232/com.moreunion.zhenghao E/AndroidRuntime: at android.widget.LinearLayout.onLayout(LinearLayout.java:1515)
at android.view.View.layout(View.java:17688)
at android.view.ViewGroup.layout(ViewGroup.java:5631)
at android.widget.FrameLayout.layoutChildren(FrameLayout.java:325)
at android.widget.FrameLayout.onLayout(FrameLayout.java:261)
at android.view.View.layout(View.java:17688)
at android.view.ViewGroup.layout(ViewGroup.java:5631)
at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1762)
at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1606)
at android.widget.LinearLayout.onLayout(LinearLayout.java:1515)
at android.view.View.layout(View.java:17688)
at android.view.ViewGroup.layout(ViewGroup.java:5631)
at android.widget.FrameLayout.layoutChildren(FrameLayout.java:325)
at android.widget.FrameLayout.onLayout(FrameLayout.java:261)
at android.view.View.layout(View.java:17688)
at android.view.ViewGroup.layout(ViewGroup.java:5631)
at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1762)
at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1606)
at android.widget.LinearLayout.onLayout(LinearLayout.java:1515)
at android.view.View.layout(View.java:17688)
at android.view.ViewGroup.layout(ViewGroup.java:5631)
at cn.bingoogolapple.swipebacklayout.BGASwipeBackLayout.onLayout(BGASwipeBackLayout.java:888)
at android.view.View.layout(View.java:17688)
at android.view.ViewGroup.layout(ViewGroup.java:5631)
at android.widget.FrameLayout.layoutChildren(FrameLayout.java:325)
at android.widget.FrameLayout.onLayout(FrameLayout.java:261)
at com.android.internal.policy.DecorView.onLayout(DecorView.java:774)
at android.view.View.layout(View.java:17688)
at android.view.ViewGroup.layout(ViewGroup.java:5631)
at android.view.ViewRootImpl.performLayout(ViewRootImpl.java:2513)
at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:2228)
at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1366)
at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:6768)
at android.view.Choreographer$CallbackRecord.run(Choreographer.java:926)
at android.view.Choreographer.doCallbacks(Choreographer.java:735)
at android.view.Choreographer.doFrame(Choreographer.java:667)
at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:912)
at android.os.Handler.handleCallback(Handler.java:761)
at android.os.Handler.dispatchMessage(Handler.java:98)
at android.os.Looper.loop(Looper.java:156)
at android.app.ActivityThread.main(ActivityThread.java:6523)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:942)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:832)
解决方案方案:
为了使用ViewStub,你所有需要做的是指定android:id特性,便于以后inflate,指定android:layout特性,引用布局文件。ViewStub还允许你使用第三个特性,android:inflatedId,你可以使用它来重写包含的布局文件中的根元素的id。最后,在ViewStub上设定的layout_*参数将会应用到包含的布局文件的顶部。这里有个例子:
<ViewStub
android:id="@+id/stub_import"
android:inflatedId="@+id/panel_import"
android:layout="@layout/progress_overlay"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_gravity="bottom" />
当你准备inflate ViewStub时,调用inflate()方法即可。你还可以设定ViewStub的Visibility为VISIBLE或INVISIBLE,也会触发inflate。注意的是,使用inflate()方法能返回布局文件的根View:
((ViewStub) findViewById(R.id.stub_import)).setVisibility(View.VISIBLE);
// or
View importPanel = ((ViewStub) findViewById(R.id.stub_import)).inflate();
有一点需要记住的是:当ViewStub inflate后,这个ViewStub就从View层次中移除了。因此,没有必要保留一个对ViewStub的引用(如在类的字段里)。
ViewStub是快捷编程与高效编程之间的产物。与其手动的inflate View并在运行时添加到View层次上,不如简单的使用ViewStub。它相当“廉价”且易于使用。ViewStub唯一的缺点是现在不支持<merge />标签。
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