ClassCastException異常：無法施展的FrameLayout到RelativeLayout的

最近我一直在得到來自谷歌這種怪異的崩潰報告播放：ClassCastException異常：無法施展的FrameLayout到RelativeLayout的

Fatal Exception: java.lang.ClassCastExceptionandroid.widget.FrameLayout$LayoutParams cannot be cast to android.widget.RelativeLayout$LayoutParams

這裏是我的日誌文件：

java.lang.ClassCastException: android.widget.FrameLayout$LayoutParams cannot be cast to android.widget.RelativeLayout$LayoutParams 
    at android.widget.RelativeLayout$DependencyGraph.findRoots(RelativeLayout.java:1722) 
    at android.widget.RelativeLayout$DependencyGraph.getSortedViews(RelativeLayout.java:1667) 
    at android.widget.RelativeLayout.sortChildren(RelativeLayout.java:373) 
    at android.widget.RelativeLayout.onMeasure(RelativeLayout.java:381) 
    at android.view.View.measure(View.java:16525) 
    at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5125) 
    at android.widget.FrameLayout.onMeasure(FrameLayout.java:310) 
    at android.view.View.measure(View.java:16525) 
    at android.widget.RelativeLayout.measureChildHorizontal(RelativeLayout.java:719) 
    at android.widget.RelativeLayout.onMeasure(RelativeLayout.java:455) 
    at android.view.View.measure(View.java:16525) 
    at android.support.v4.widget.DrawerLayout.onMeasure(DrawerLayout.java:940) 
    at android.view.View.measure(View.java:16525) 
    at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5125) 
    at android.widget.FrameLayout.onMeasure(FrameLayout.java:310) 
    at android.view.View.measure(View.java:16525) 
    at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5125) 
    at com.android.internal.widget.ActionBarOverlayLayout.onMeasure(ActionBarOverlayLayout.java:327) 
    at android.view.View.measure(View.java:16525) 
    at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5125) 
    at android.widget.FrameLayout.onMeasure(FrameLayout.java:310) 
    at com.android.internal.policy.impl.PhoneWindow$DecorView.onMeasure(PhoneWindow.java:2291) 
    at android.view.View.measure(View.java:16525) 
    at android.view.ViewRootImpl.performMeasure(ViewRootImpl.java:1955) 
    at android.view.ViewRootImpl.measureHierarchy(ViewRootImpl.java:1152) 
    at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1334) 
    at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1039) 
    at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:5648) 
    at android.view.Choreographer$CallbackRecord.run(Choreographer.java:761) 
    at android.view.Choreographer.doCallbacks(Choreographer.java:574) 
    at android.view.Choreographer.doFrame(Choreographer.java:544) 
    at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:747) 
    at android.os.Handler.handleCallback(Handler.java:733) 
    at android.os.Handler.dispatchMessage(Handler.java:95) 
    at android.os.Looper.loop(Looper.java:136) 
    at android.app.ActivityThread.main(ActivityThread.java:5111) 
    at java.lang.reflect.Method.invokeNative(Method.java) 
    at java.lang.reflect.Method.invoke(Method.java:515) 
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793) 
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:609) 
    at dalvik.system.NativeStart.main(NativeStart.java)

現在我想通了，該代碼在我的應用程序內被調用時導致該問題：

public void setTopAlignment(boolean alignTop){ 

    LayoutParams params = new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT); 
    if(alignTop){ 
     params.gravity = Gravity.TOP; 
     int actionBarHeight = 0; 
     TypedValue tv = new TypedValue(); 
     if (getContext().getTheme().resolveAttribute(android.R.attr.actionBarSize, tv, true)) 
     { 
      actionBarHeight = TypedValue.complexToDimensionPixelSize(tv.data,getContext().getResources().getDisplayMetrics()); 
     } 

     int statusBarHeight = 0; 
     int resourceId = getResources().getIdentifier("status_bar_height", "dimen", "android"); 
     if (resourceId > 0) { 
      statusBarHeight = getResources().getDimensionPixelSize(resourceId); 
     } 

     params.setMargins(0, actionBarHeight + statusBarHeight, 0,0); 
    }else{ 
     params.gravity = Gravity.BOTTOM; 
    } 
    MessageView.this.setLayoutParams(params); 
}

The class Messa geView擴展了FrameLayout。所以出於某種原因，當我的代碼的這部分被調用時，出現ClassCastException異常，是否有任何我正在做的錯誤導致它崩潰？

來源

2015-09-14 user5035668

LayoutParams始終適用於父佈局。 MessageView的容器是什麼？ – Blackbelt

我的MessageView類的容器是FrameLayout。 – user5035668

奇怪的是我無法在我的設備上重現錯誤，而我的設備是Motorola G.無論我多麼努力地嘗試應用程序，都不會因此異常而崩潰。 – user5035668

的LayoutParams PARAMS

您使用FrameLayout.LayoutParams和你的觀點需要RelativeLayout.LayoutParams，作爲容器似乎是RelativeLayout的。

將佈局參數的導入從FrameLayout更改爲RelativeLayout

來源

2015-09-14 12:32:48 user2788843

如果我這樣做，它有一個類似的錯誤說法相反的崩潰：廣東話投的RelativeLayout到的FrameLayout – user5035668

ClassCastException異常：無法施展的FrameLayout到RelativeLayout的

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