我正在调试一个 android 应用程序(不幸的是,它是由其他人编写的)。该应用程序有一个持续 1 秒的启动活动,然后使用意图转换到登录页面活动。该应用程序运行良好,直到我注意到未在清单文件中设置 targetSDKVersion。我将它设置为 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)
应用程序在显示初始屏幕后和登录页面活动加载之前立即崩溃。以下块显示来自启动活动的相关代码块。
飞溅活动
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,在我调试此问题的所有研究中,我发现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();
}