Android – 错误 – IllegalArgumentException：添加窗口后无法更改窗口类型

我正在调试一个 Android应用程序(不幸的是由别人写的).该应用程序具有持续1秒的启动活动,然后使用意图转换为登录页面活动.该应用程序运行正常,直到我注意到未在清单文件中设置targetSDKVersion.我把它设置为18.然后当我在模拟器中运行应用程序时,应用程序崩溃,我在logcat中看到以下错误：

10-24 06:14:26.840: E/AndroidRuntime(2457): FATAL EXCEPTION: main
10-24 06:14:26.840: E/AndroidRuntime(2457): java.lang.IllegalArgumentException: Window type can not be changed after the window is added.
10-24 06:14:26.840: E/AndroidRuntime(2457):     at android.os.Parcel.readException(Parcel.java:1435)
10-24 06:14:26.840: E/AndroidRuntime(2457):     at android.os.Parcel.readException(Parcel.java:1385)
10-24 06:14:26.840: E/AndroidRuntime(2457):     at android.view.IWindowSession$Stub$Proxy.relayout(IWindowSession.java:835)
10-24 06:14:26.840: E/AndroidRuntime(2457):     at android.view.ViewRootImpl.relayoutWindow(ViewRootImpl.java:5034)
10-24 06:14:26.840: E/AndroidRuntime(2457):     at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1399)
10-24 06:14:26.840: E/AndroidRuntime(2457):     at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1004)
10-24 06:14:26.840: E/AndroidRuntime(2457):     at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:5481)
10-24 06:14:26.840: E/AndroidRuntime(2457):     at android.view.Choreographer$CallbackRecord.run(Choreographer.java:749)
10-24 06:14:26.840: E/AndroidRuntime(2457):     at android.view.Choreographer.doCallbacks(Choreographer.java:562)
10-24 06:14:26.840: E/AndroidRuntime(2457):     at android.view.Choreographer.doFrame(Choreographer.java:532)
10-24 06:14:26.840: E/AndroidRuntime(2457):     at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:735)
10-24 06:14:26.840: E/AndroidRuntime(2457):     at android.os.Handler.handleCallback(Handler.java:730)
10-24 06:14:26.840: E/AndroidRuntime(2457):     at android.os.Handler.dispatchMessage(Handler.java:92)
10-24 06:14:26.840: E/AndroidRuntime(2457):     at android.os.Looper.loop(Looper.java:137)
10-24 06:14:26.840: E/AndroidRuntime(2457):     at android.app.ActivityThread.main(ActivityThread.java:5103)
10-24 06:14:26.840: E/AndroidRuntime(2457):     at java.lang.reflect.Method.invokeNative(Native Method)
10-24 06:14:26.840: E/AndroidRuntime(2457):     at java.lang.reflect.Method.invoke(Method.java:525)
10-24 06:14:26.840: E/AndroidRuntime(2457):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:737)
10-24 06:14:26.840: E/AndroidRuntime(2457):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
10-24 06:14:26.840: E/AndroidRuntime(2457):     at dalvik.system.NativeStart.main(Native Method)

应用程序在显示启动画面后以及加载登录页面活动之前立即崩溃.以下块显示了splash活动中的相关代码块.

启动活动

private Thread mSplashThread;    
@Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.splash);
    final SplashScreenActivity sPlashScreen = this;   
        mSplashThread =  new Thread(){

@Override
        public void run(){
        try {
            synchronized(this){
                // Wait given period of time or exit on touch
                wait(1000);
            }
        }
        catch(InterruptedException ex){                    
        }

        finish();

        // Run next activity
        Intent intent = new Intent();
        intent.setClass(sPlashScreen, LandingPageActivity.class);
        startActivity(intent);                 
        }
    };
    mSplashThread.start();        
    }

@Override
public boolean onTouchEvent(MotionEvent evt)
{
    if(evt.getAction() == MotionEvent.ACTION_DOWN)
    {
    try{
        synchronized(mSplashThread){
            mSplashThread.notifyAll();
            }
    }
    catch (IllegalArgumentException e){
        Log.v("This is it", e.getCause().getMessage());
    }
}
return true;
}

现在在调试此问题的所有研究中,我找到了检查以下代码段的建议,但我的应用程序中没有这样的内容：

@Override
    public void onAttachedToWindow()
    {  
        this.getWindow().setType(WindowManager.LayoutParams.TYPE_KEYGUARD);
        super.onAttachedToWindow();  
    }

问题得到解决.确实在其中一个空基类中出现了“onAttachedToWindow”.删除该覆盖后它起作用了.正如我在原帖中所提到的,我在另一篇文章中遇到了这个解决方案.这是对 post的引用.

但在我的情况下,此代码不在任何面向用户的活动中.这是我的登录页面继承的空白父活动.希望有人在这篇文章后几个小时保存.