为什么在此代码中获取windowManager$BadTokenException？

Question

public class ReviewActivity extends Activity {
     public void onCreate(Bundle savedInstanceState)
    {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.reviewfrag_layout);
         mInflater = (LayoutInflater) ReviewActivity.this.getSystemService( 
                    LAYOUT_INFLATER_SERVICE); 
            ContextThemeWrapper mTheme = new ContextThemeWrapper(this, 
                    R.style.customDialog); 

            mView = mInflater.inflate(R.layout.custom_dialog, null); 
            // mDialog = new Dialog(this,0); // context, theme 

            mDialog = new Dialog(mTheme); 
            mDialog.requestWindowFeature(Window.FEATURE_NO_TITLE); 
            mDialog.setContentView(this.mView); 

               //if i comment below line  code runs otherwise give exception
           mDialog.show();
        }
}

风格：

<style name="customDialog">
    <item name="android:windowBackground">@android:color/transparent</item>
    <item name="android:windowFrame">@null</item>
    <item name="android:windowNoTitle">true</item>
    <item name="android:windowIsFloating">false</item>
    <item name="android:windowIsTranslucent">false</item>
    <item name="android:windowContentOverlay">@android:color/transparent</item>
    <item name="android:backgroundDimEnabled">false</item>

日志消息: 10-10 13:20:01.184: E/AndroidRuntime(1417)：致命异常: main 10-10 13:20:01.184: E/AndroidRuntime(1417)：android.view.WindowManager$BadTokenException:无法添加窗口-- token window无效；您的活动正在运行吗? 10-10 13:20:01.184: E/AndroidRuntime(1417)：at android.view.ViewRootImpl.setView(ViewRootImpl.java:585) 10-10 13:20:01.184: E/AndroidRuntime(1417)：at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:326) 10-10 13:20:01.184: E/AndroidRuntime(1417)：at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:224) 10-10 13:20:01.184：E/AndroidRuntime(1417)：at android.view.WindowManagerImpl$CompatModeWrapper.addView(WindowManagerImpl.java:149) 10-10 13:20:01.184: E/AndroidRuntime(1417)：at android.view.Window$LocalWindowManager.addView(Window.java:547) 10-10 13:20:01.184: E/AndroidRuntime(1417)：at android.app.Dialog.show(Dialog.java:277) 10-10 13:20:01.184: E/AndroidRuntime(1417)：at com.mds。restau.activity.ReviewActivity$1.onClick(ReviewActivity.java:74) 10-10 13:20:01.184: E/AndroidRuntime(1417)：at android.view.View.performClick(View.java:4084) 10-10 13:20:01.184: E/AndroidRuntime(1417)：at android.view.View$PerformClick.run(View.java:16966) 10-10 13:20:01.184: E/AndroidRuntime(1417)：at android.os.Handler.handleCallback(Handler.java:615) 10-10 13:20:01.184: E/AndroidRuntime(1417)：at android.os.Handler.dispatchMessage(Handler.java:92) 10-10 13:20:01.184: E/AndroidRuntime(1417)：at android.os.Looper.loop(Looper.java:137) 10-10 13:20:01.184: E/AndroidRuntime(1417)：at 10-10 13:20:01.184: E/AndroidRuntime(1417 ))：at AndroidRuntime(原生方法) 10-10 13:20:01.184: E/AndroidRuntime(1417)：at java.lang.reflect.Method.invoke(Method.java:511) 10-10 13:20:01.184: E/AndroidRuntime(1417)：at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786) 10-10 13:20:01.184: E/java.lang.reflect.Method.invokeNative(1417)：at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553) 10-10 13:20:01.184: E/AndroidRuntime(1417年)：在dalvik.system.NativeStart.main(原生方法)

Answer 1

这是一个上下文问题。如果要从活动组中打开此活动，请使用以下命令，而不是使用setContentView(R.layout.xxxx)：

LayoutInflater.from(getParent()).inflate(R.layout.XXXX，viewToLoad = View null)；this.setContentView(viewToLoad)；

希望它能起作用