错误:视图未附加到窗口管理器

Question

我从客户端远程获取以下内容,因此我不知道他们正在使用什么硬件等.

java.lang.IllegalArgumentException: View not attached to window manager
       at android.view.WindowManagerImpl.findViewLocked(WindowManagerImpl.java:355)
       at android.view.WindowManagerImpl.removeView(WindowManagerImpl.java:200)
       at android.view.Window$LocalWindowManager.removeView(Window.java:417)
       at android.app.Dialog.dismissDialog(Dialog.java:279)
       at android.app.Dialog.access$000(Dialog.java:72)
       at android.app.Dialog$1.run(Dialog.java:108)
       at android.app.Dialog.dismiss(Dialog.java:263)
       at com..mysite.android.ActivityGame$1.onFinish(ActivityGame.java:154)
       at android.os.CountDownTimer$1.handleMessage(CountDownTimer.java:118)
       at android.os.Handler.dispatchMessage(Handler.java:99)
       at android.os.Looper.loop(Looper.java:123)
       at android.app.ActivityThread.main(ActivityThread.java:4203)
       at java.lang.reflect.Method.invokeNative(Native Method)
       at java.lang.reflect.Method.invoke(Method.java:521)
       at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:799)
       at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:557)

这是因为ProgressDialog而发生的

    progressDialog = new ProgressDialog( this );
    progressDialog.setMessage(getString(R.string.get_ready));
    progressDialog.setCancelable(false);
    progressDialog.setProgressStyle(ProgressDialog.STYLE_SPINNER);
    progressDialog.setMax(12);
    progressDialog.show();

    new CountDownTimer(3000, 250) {

         @Override
        public void onTick(long millisUntilFinished) {
             //progressDialog.incrementProgressBy(1);
         }

         @Override
        public void onFinish() {
             progressDialog.dismiss(); //********* ERROR HAPPENS HERE *********
             nextQuestion();
         }
    }.start();

活动在清单中看起来像这样.

<activity android:theme="@style/GameTheme" android:name=".ActivityGame" android:screenOrientation="portrait" android:launchMode="singleTask" android:configChanges="keyboardHidden|orientation"></activity>

那么这意味着什么呢？我认为它与被销毁的Activity有关,然后你可以看到我正确设置了configChanges.

Answer 1

尝试:

if (pDialog.isShowing()) {
   pDialog.cancel();
}

在你的被覆盖onDestroy()或onStop()方法.

Answer 2

在您退出后尝试显示对话框时会出现此问题Activity.

我刚刚通过写下以下代码解决了这个问题:

public void onDestroy(){
super.onDestroy();
if(progressDialog!=null)
if(progressDialog.isShowing()){
progressDialog.cancel();
}

}

基本上,您从哪个类开始progressDialog,覆盖onDestroy()方法并以此方式执行.它解决了Activity泄露窗口问题.

Answer 3

当您在活动关闭后调用解雇时，通常会发生这种情况。