java.lang.IllegalArgumentException: View not attached to window manager
- by alex2k8
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>
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)
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();
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.
So any suggestions are very appreciated.
