java.lang.ClassCastException：android.view.ViewGroup $ LayoutParams不能轉換爲android.widget.LinearLayout $ LayoutParams android 4.1.2

我只在android 4.1.2的某些設備上有這個例外。所以，我想知道它有什麼問題。這裏是堆棧跟蹤 - 從我的代碼誰都行，唯一的SDK - 例外發生在SDK，所以沒有行被遺漏：

java.lang.ClassCastException: android.view.ViewGroup$LayoutParams cannot be cast to 
android.widget.LinearLayout$LayoutParams 
    at android.widget.LinearLayout.measureHorizontal(LinearLayout.java:996) 
    at android.widget.LinearLayout.onMeasure(LinearLayout.java:576) 
    at android.view.View.measure(View.java:15563) 
    at android.widget.RelativeLayout.measureChildHorizontal(RelativeLayout.java:617) 
    at android.widget.RelativeLayout.onMeasure(RelativeLayout.java:399) 
    at android.view.View.measure(View.java:15563) 
    at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5112) 
    at android.widget.FrameLayout.onMeasure(FrameLayout.java:310) 
    at android.view.View.measure(View.java:15563) 
    at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5112) 
    at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1396) 
    at android.widget.LinearLayout.measureVertical(LinearLayout.java:681) 
    at android.widget.LinearLayout.onMeasure(LinearLayout.java:574) 
    at android.view.View.measure(View.java:15563) 
    at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5112) 
    at android.widget.FrameLayout.onMeasure(FrameLayout.java:310) 
    at com.android.internal.policy.impl.PhoneWindow$DecorView.onMeasure(PhoneWindow.java:2423) 
    at android.view.View.measure(View.java:15563) 
    at android.view.ViewRootImpl.performMeasure(ViewRootImpl.java:2003) 
    at android.view.ViewRootImpl.measureHierarchy(ViewRootImpl.java:1242) 
    at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1417) 
    at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1135) 
    at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:4653) 
    at android.view.Choreographer$CallbackRecord.run(Choreographer.java:725) 
    at android.view.Choreographer.doCallbacks(Choreographer.java:555) 
    at android.view.Choreographer.doFrame(Choreographer.java:525) 
    at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:711) 
    at android.os.Handler.handleCallback(Handler.java:615) 
    at android.os.Handler.dispatchMessage(Handler.java:92) 
    at android.os.Looper.loop(Looper.java:137) 
    at android.app.ActivityThread.main(ActivityThread.java:4944) 
    at java.lang.reflect.Method.invokeNative(Native Method) 
    at java.lang.reflect.Method.invoke(Method.java:511) 
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1038) 
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:805) 
    at dalvik.system.NativeStart.main(Native Method)

來源

2014-10-28 Evgenii Kanivets

變化'進口android.widget.LinearLayout.LayoutParams;''到進口android.widget.ViewGroup.LayoutParams;' – 2014-10-28 06:58:31

認罪se顯示一些代碼 – 2014-10-28 06:58:39

看來，您爲視圖動態設置的參數與父類預期的params類型不匹配 – TacB0sS 2014-10-28 06:59:22

在你的代碼導入import android.widget.LinearLayout.LayoutParams而不是android.view.ViewGroup.LayoutParams;

所以刪除import android.widget.LinearLayout.LayoutParams;

，並添加import android.view.ViewGroup.LayoutParams;

來源

2014-10-28 07:03:55

我認爲你是對的，我試圖以這種方式更改我的代碼，但無法檢查，因爲我沒有Android 4.1.2上的設備。所以，我只是接受你的答案。 – 2014-10-28 09:02:17

java.lang.ClassCastException：android.view.ViewGroup $ LayoutParams不能轉換爲android.widget.LinearLayout $ LayoutParams android 4.1.2

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