用于webview的android setLayoutParams产生ERROR

|| 是否可以设置 
mWebView = (WebView) findViewById(R.id.webviewHelp);
        mWebView.setLayoutParams(new ViewGroup.LayoutParams(100, 200));
这里 
 mWebView.setLayoutParams(new Gallery.LayoutParams(70,85));
也经过测试但不起作用:( 在我的活动中？ 我的xml文件如下 （这里我的应用程序需要通过XML创建Webview） 
 <?xml version=\"1.0\" encoding=\"utf-8\"?>
    <RelativeLayout xmlns:android=\"http://schemas.android.com/apk/res/android\"
        android:layout_width=\"fill_parent\"   android:id=\"@+id/rl\"
        android:layout_height=\"360dip\">
    <!--    <WebView android:id=\"@+id/webviewHelp\" android:layout_width=\"fill_parent\"-->
    <!--        android:layout_height=\"fill_parent\" />-->
    <WebView android:id=\"@+id/webviewHelp\" android:layout_width=\"fill_parent\"
            android:layout_height=\"fill_parent\" />
        <Button android:id=\"@+id/My_btn\"
            android:layout_alignParentBottom=\"true\"
            android:layout_alignParentLeft=\"true\" android:gravity=\"center\" android:textSize=\"8px\" android:text=\"Download this mp3 file\"
    android:textColor=\"@color/white\" 
            android:layout_width=\"fill_parent\" android:layout_height=\"33dip\"
            android:visibility=\"invisible\" />
        <Button android:id=\"@+id/My_btn1\"
            android:layout_alignParentBottom=\"true\"
            android:layout_alignParentLeft=\"true\" android:text=\"this is button !\"
            android:layout_width=\"0dip\" android:layout_height=\"0dip\"
            android:visibility=\"invisible\" />
    </RelativeLayout>
而且我收到此错误，并强制关闭应用程序 
06-11 15:42:51.816: DEBUG/AndroidRuntime(323): Shutting down VM
06-11 15:42:51.816: WARN/dalvikvm(323): threadid=3: thread exiting with uncaught exception (group=0x4001aa28)
06-11 15:42:51.816: ERROR/AndroidRuntime(323): Uncaught handler: thread main exiting due to uncaught exception
06-11 15:42:51.835: ERROR/AndroidRuntime(323): java.lang.ClassCastException: android.view.ViewGroup$LayoutParams
06-11 15:42:51.835: ERROR/AndroidRuntime(323):     at android.widget.RelativeLayout$DependencyGraph.findRoots(RelativeLayout.java:1291)
06-11 15:42:51.835: ERROR/AndroidRuntime(323):     at android.widget.RelativeLayout$DependencyGraph.getSortedViews(RelativeLayout.java:1238)
06-11 15:42:51.835: ERROR/AndroidRuntime(323):     at android.widget.RelativeLayout.sortChildren(RelativeLayout.java:279)
06-11 15:42:51.835: ERROR/AndroidRuntime(323):     at android.widget.RelativeLayout.onMeasure(RelativeLayout.java:299)
06-11 15:42:51.835: ERROR/AndroidRuntime(323):     at android.view.View.measure(View.java:7703)
06-11 15:42:51.835: ERROR/AndroidRuntime(323):     at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:2989)
06-11 15:42:51.835: ERROR/AndroidRuntime(323):     at android.widget.FrameLayout.onMeasure(FrameLayout.java:245)
06-11 15:42:51.835: ERROR/AndroidRuntime(323):     at android.view.View.measure(View.java:7703)
06-11 15:42:51.835: ERROR/AndroidRuntime(323):     at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:2989)
06-11 15:42:51.835: ERROR/AndroidRuntime(323):     at android.widget.FrameLayout.onMeasure(FrameLayout.java:245)
06-11 15:42:51.835: ERROR/AndroidRuntime(323):     at android.view.View.measure(View.java:7703)
06-11 15:42:51.835: ERROR/AndroidRuntime(323):     at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:2989)
06-11 15:42:51.835: ERROR/AndroidRuntime(323):     at android.widget.FrameLayout.onMeasure(FrameLayout.java:245)
06-11 15:42:51.835: ERROR/AndroidRuntime(323):     at android.view.View.measure(View.java:7703)
06-11 15:42:51.835: ERROR/AndroidRuntime(323):     at android.widget.RelativeLayout.measureChildHorizontal(RelativeLayout.java:569)
06-11 15:42:51.835: ERROR/AndroidRuntime(323):     at android.widget.RelativeLayout.onMeasure(RelativeLayout.java:361)
06-11 15:42:51.835: ERROR/AndroidRuntime(323):     at android.view.View.measure(View.java:7703)
06-11 15:42:51.835: ERROR/AndroidRuntime(323):     at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:2989)
06-11 15:42:51.835: ERROR/AndroidRuntime(323):     at android.widget.FrameLayout.onMeasure(FrameLayout.java:245)
06-11 15:42:51.835: ERROR/AndroidRuntime(323):     at android.view.View.measure(View.java:7703)
06-11 15:42:51.835: ERROR/AndroidRuntime(323):     at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:2989)
06-11 15:42:51.835: ERROR/AndroidRuntime(323):     at android.widget.FrameLayout.onMeasure(FrameLayout.java:245)
06-11 15:42:51.835: ERROR/AndroidRuntime(323):     at android.view.View.measure(View.java:7703)
06-11 15:42:51.835: ERROR/AndroidRuntime(323):     at android.widget.LinearLayout.measureVertical(LinearLayout.java:464)
06-11 15:42:51.835: ERROR/AndroidRuntime(323):     at android.widget.LinearLayout.onMeasure(LinearLayout.java:278)
06-11 15:42:51.835: ERROR/AndroidRuntime(323):     at android.view.View.measure(View.java:7703)
06-11 15:42:51.835: ERROR/AndroidRuntime(323):     at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:2989)
06-11 15:42:51.835: ERROR/AndroidRuntime(323):     at android.widget.FrameLayout.onMeasure(FrameLayout.java:245)
06-11 15:42:51.835: ERROR/AndroidRuntime(323):     at android.view.View.measure(View.java:7703)
06-11 15:42:51.835: ERROR/AndroidRuntime(323):     at android.view.ViewRoot.performTraversals(ViewRoot.java:747)
06-11 15:42:51.835: ERROR/AndroidRuntime(323):     at android.view.ViewRoot.handleMessage(ViewRoot.java:1613)
06-11 15:42:51.835: ERROR/AndroidRuntime(323):     at android.os.Handler.dispatchMessage(Handler.java:99)
06-11 15:42:51.835: ERROR/AndroidRuntime(323):     at android.os.Looper.loop(Looper.java:123)
06-11 15:42:51.835: ERROR/AndroidRuntime(323):     at android.app.ActivityThread.main(ActivityThread.java:4203)
06-11 15:42:51.835: ERROR/AndroidRuntime(323):     at java.lang.reflect.Method.invokeNative(Native Method)
06-11 15:42:51.835: ERROR/AndroidRuntime(323):     at java.lang.reflect.Method.invoke(Method.java:521)
06-11 15:42:51.835: ERROR/AndroidRuntime(323):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:791)
06-11 15:42:51.835: ERROR/AndroidRuntime(323):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:549)
06-11 15:42:51.835: ERROR/AndroidRuntime(323):     at dalvik.system.NativeStart.main(Native Method)
06-11 15:42:51.845: INFO/Process(52): Sending signal. PID: 323 SIG: 3
06-11 15:42:51.845: INFO/dalvikvm(323): threadid=7: reacting to signal 3
06-11 15:42:51.857: ERROR/dalvikvm(323): Unable to open stack trace file \'/data/anr/traces.txt\': Permission denied
06-11 15:42:52.566: DEBUG/dalvikvm(99): GC freed 4505 objects / 251696 bytes in 293ms
我在做什么错？在此先感谢：Pragna     
2020-02-25 2 条评论
分享

没有找到相关结果

    已邀请:

    抵舵

            代替这个： 
       mWebView = (WebView) findViewById(R.id.webviewHelp);    
   mWebView.setLayoutParams(new ViewGroup.LayoutParams(100, 200));
    采用： 
       mWebView = (WebView) findViewById(R.id.webviewHelp);        
   LayoutParamters lp = mWebView.getLayoutParams();    
   lp.width=100;   
   lp.height=200;   
   mWebView.setLayoutParams(lp);
        
    2020-02-25 0 0
    分享
    为什么被折叠? 0 个回复被折叠

    要回复问题请先登录或注册

    或代码 OrCode.com 备案号：粤ICP备15020848号-1
    Escape time: 0.033475160598755