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

Question

我试过的建议在这里,建议在此情况下,建议在这里,我已经在我的基本活动注释掉onAttachedToWindow().我有两个活动继承自这个类BaseActivity.一个运行,一个不运行.有什么区别？我的目标SDK是19; 将它改为12没有区别.这是我的onCreate for BaseActivity:

    @Override
    protected void onCreate(Bundle savedInstanceState) {
    getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);
    this.getWindow().setType(WindowManager.LayoutParams.TYPE_KEYGUARD);
    requestWindowFeature(Window.FEATURE_NO_TITLE);
    super.onAttachedToWindow();
    super.onCreate(savedInstanceState);

    ....
    }

当导航到第二个活动时,单步执行代码,它会通过onCreate(),onResume(),然后崩溃.

可能是什么问题呢？

堆栈跟踪:

06-26 13:41:57.963  28667-28667/com.assistek.ediary E/AndroidRuntime? FATAL EXCEPTION: main
Process: com.assistek.ediary, PID: 28667
java.lang.IllegalArgumentException: Window type can not be changed after the window is added.
        at android.os.Parcel.readException(Parcel.java:1550)
        at android.os.Parcel.readException(Parcel.java:1499)
        at android.view.IWindowSession$Stub$Proxy.relayout(IWindowSession.java:903)
        at android.view.ViewRootImpl.relayoutWindow(ViewRootImpl.java:5301)
        at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1507)
        at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1061)
        at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:5885)
        at android.view.Choreographer$CallbackRecord.run(Choreographer.java:767)
        at android.view.Choreographer.doCallbacks(Choreographer.java:580)
        at android.view.Choreographer.doFrame(Choreographer.java:550)
        at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:753)
        at android.os.Handler.handleCallback(Handler.java:739)
        at android.os.Handler.dispatchMessage(Handler.java:95)
        at android.os.Looper.loop(Looper.java:135)
        at android.app.ActivityThread.main(ActivityThread.java:5254)
        at java.lang.reflect.Method.invoke(Native Method)
        at java.lang.reflect.Method.invoke(Method.java:372)
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)

编辑:如果我更改为目标API 12并将所有更改都onCreate放入onAttachedToWindow,我可以让这个例外消失,但我希望目标SDK为19.

我的新 onCreate():

@Override
protected void onCreate(Bundle savedInstanceState) {

    requestWindowFeature(Window.FEATURE_NO_TITLE);
    super.onCreate(savedInstanceState);
...
}

我的新 onAttachedToWindow():

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

这仅适用于目标API 12.

当使用WindowManager.LayoutParams.TYPE_KEYGUARD时,答案最小目标必须小于14

Answer 1

尝试将此用于窗口:

requestWindowFeature(Window.FEATURE_NO_TITLE);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
                     WindowManager.LayoutParams.FLAG_FULLSCREEN);
setContentView(R.layout.activity_adjectives);