android.widget.FrameLayout.layoutChildren

Question

我目前在 Fabric 中遇到了大量关于同一崩溃的许多不同实例的崩溃。IE FrameLayout.java 第 275 行，FrameLayout.java 第 405 行，FrameLayout.java 第 531 行。没有明确的迹象表明这次崩溃发生时发生了什么。特别是没有对我的任何代码的行引用。有没有人经历过这样的事情，有没有人知道是什么导致了这种情况，有没有人知道问题的解决方案？谢谢！

    **FrameLayout.java line 531
    android.widget.FrameLayout.layoutChildren**

    Fatal Exception: java.lang.NullPointerException: Attempt to invoke 
    virtual method 'int android.view.View.getVisibility()' on a null object 
    reference
           at android.widget.FrameLayout.layoutChildren(FrameLayout.java:275)
           at android.widget.FrameLayout.onLayout(FrameLayout.java:261)
           at android.view.View.layout(View.java:19039)
           at android.view.ViewGroup.layout(ViewGroup.java:5935)
           at 
   android.widget.LinearLayout.setChildFrame(LinearLayout.java:1741)
           at 
    android.widget.LinearLayout.layoutVertical(LinearLayout.java:1585)
           at android.widget.LinearLayout.onLayout(LinearLayout.java:1494)
           at android.view.View.layout(View.java:19039)
           at android.view.ViewGroup.layout(ViewGroup.java:5935)
           at android.widget.FrameLayout.layoutChildren(FrameLayout.java:323)
           at android.widget.FrameLayout.onLayout(FrameLayout.java:261)
          at 
com.android.internal.policy.DecorView.onLayout(DecorView.java:954)
       at android.view.View.layout(View.java:19039)
       at android.view.ViewGroup.layout(ViewGroup.java:5935)
       at android.view.ViewRootImpl.performLayout(ViewRootImpl.java:2711)
       at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:2426)
       at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1569)
       at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:7296)
       at android.view.Choreographer$CallbackRecord.run(Choreographer.java:930)
       at android.view.Choreographer.doCallbacks(Choreographer.java:705)
       at android.view.Choreographer.doFrame(Choreographer.java:640)
       at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:916)
       at android.os.Handler.handleCallback(Handler.java:751)
       at android.os.Handler.dispatchMessage(Handler.java:95)
       at android.os.Looper.loop(Looper.java:154)
       at android.app.ActivityThread.main(ActivityThread.java:6823)
       at java.lang.reflect.Method.invoke(Method.java)
       at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1563)
       at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1451) 

Answer 1

1. 我认为你的布局有错误。
2. 当您使用错误的 id 时会发生此类错误
3. 检查所有视图 ID 并在 java 文件中匹配它们（尝试重命名它们）