java.lang.IllegalArgumentException：如果查看没有连接到窗口管理器 [英] java.lang.IllegalArgumentException: View not attached to window manager

问题描述

我有开始的AsyncTask，并给出了操作的持续时间进度对话框的活动。该活动被宣布不会被旋转或键盘滑盖重建。

I have an activity that starts AsyncTask and shows progress dialog for the duration of operation. The activity is declared NOT be recreated by rotation or keyboard slide.

    <activity android:name=".MyActivity" 
              android:label="@string/app_name"
              android:configChanges="keyboardHidden|orientation"
              >
        <intent-filter>
        </intent-filter>
    </activity>

在任务完成后，我dissmiss对话框，但在某些手机上（框架：1.5，1.6），这样的错误被抛出：

Once task completed, I dissmiss dialog, but on some phones (framework: 1.5, 1.6) such error is thrown:

java.lang.IllegalArgumentException: View not attached to window manager
    at android.view.WindowManagerImpl.findViewLocked(WindowManagerImpl.java:356)
    at android.view.WindowManagerImpl.removeView(WindowManagerImpl.java:201)
    at android.view.Window$LocalWindowManager.removeView(Window.java:400)
    at android.app.Dialog.dismissDialog(Dialog.java:268)
    at android.app.Dialog.access$000(Dialog.java:69)
    at android.app.Dialog$1.run(Dialog.java:103)
    at android.app.Dialog.dismiss(Dialog.java:252)
    at xxx.onPostExecute(xxx$1.java:xxx)

我的code是：

My code is:

final Dialog dialog = new AlertDialog.Builder(context)
    .setTitle("Processing...")
    .setCancelable(true)
    .create();

final AsyncTask<MyParams, Object, MyResult> task = new AsyncTask<MyParams, Object, MyResult>() {

    @Override
    protected MyResult doInBackground(MyParams... params) {
        // Long operation goes here
    }

    @Override
    protected void onPostExecute(MyResult result) {
        dialog.dismiss();
        onCompletion(result);
    }
};

task.execute(...);

dialog.setOnCancelListener(new OnCancelListener() {
    @Override
    public void onCancel(DialogInterface arg0) {
        task.cancel(false);
    }
});

dialog.show();

这是我看过（<一href="http://bend-ing.blogspot.com/2008/11/properly-handle-progress-dialog-in.html">http://bend-ing.blogspot.com/2008/11/properly-handle-progress-dialog-in.html)而在看到Android的来源，它看起来像唯一可能的情况下获得活动时被破坏的例外是，但正如我刚才所说，我不许基本活动活动消遣。

From what I have read (http://bend-ing.blogspot.com/2008/11/properly-handle-progress-dialog-in.html) and seen in Android sources, it looks like the only possible situation to get that exception is when activity was destroyed. But as I have mentioned, I forbid activity recreation for basic events.

因此​​，任何建议都非常AP preciated。

So any suggestions are very appreciated.

推荐答案

我也收到此错误的有时当我拒绝来自onPostExecute方法对话框，并完成活动。我想有时候活动被完成之前成功对话框驳回。

I too get this error sometimes when I dismiss dialog and finish activity from onPostExecute method. I guess sometimes activity gets finished before dialog successfully dismisses.

简单，对我的作品还没有有效的解决方案。

Simple, yet effective solution that works for me

@Override
protected void onPostExecute(MyResult result) {
    try {
        if ((this.mDialog != null) && this.mDialog.isShowing()) {
            this.mDialog.dismiss();
        }
    } catch (final IllegalArgumentException e) {
        // Handle or log or ignore
    } catch (final Exception e) {
        // Handle or log or ignore
    } finally {
        this.mDialog = null;
    }  
}

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