Fatal Exception: android.view.WindowManager$BadTokenException Unable to add window -- token is not valid; is your activity running?

Question

I know this question is discussed several time but believe me i never got any answer working. In my Main Activity i have used few Dialog to inform user about some operations but i get this specific error mostly (specifically 96%) on Xiaomi devices. `

Fatal Exception: android.view.WindowManager$BadTokenException
Unable to add window -- token android.os.BinderProxy@f839de9 is not valid; is your activity running?
android.view.ViewRootImpl.setView (ViewRootImpl.java:697)
android.view.WindowManagerGlobal.addView (WindowManagerGlobal.java:347)
android.view.WindowManagerImpl.addView (WindowManagerImpl.java:94)
android.widget.Toast$TN.handleShow (Toast.java:463)
android.widget.Toast$TN$2.handleMessage (Toast.java:346)
android.os.Handler.dispatchMessage (Handler.java:102)
android.os.Looper.loop (Looper.java:163)
android.app.ActivityThread.main (ActivityThread.java:6377)
java.lang.reflect.Method.invoke (Method.java)
com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run (ZygoteInit.java:904)

com.android.internal.os.ZygoteInit.main (ZygoteInit.java:794) I covered each Dialog Show method like

if (!MainActivityNew.this.isFinishing())
dialogDownload.show();

` But still i am getting this error in release mode mostly on Xiaomi Devices With Android Version 7, Please help me i stuck on this problem from past one month.

Here is some data from firebase Crashlytics

Devices 100% Xiaomi Operating systems 100% Android 7 Device states 4% background

thanks Rajshree, but i have already mentioned i have used isFinishing() method as stated in above answer. — Santosh Patange
– Santosh Patange, Commented Jul 26, 2018 at 6:42
From where you are firing the showToast method? is it from Actiivty or AsyncTask or any other background thread? — Mohammed Rampurawala
– Mohammed Rampurawala, Commented Jul 26, 2018 at 7:05
@SantoshPatange have you managed to handle it? I have a similar problem but for Motorola E4 and Android 7.1.1 — Mike
– Mike, Commented Sep 4, 2018 at 8:26

Sujeet Kumar Mehta · Accepted Answer · 2018-09-21 06:31:46Z

24

This problem is not because of Dialog but with Toast. Mainly this Toast issue is in android 7.1 version where the context become null. There is a solution created by this gentleman Solution . I have tested and this is working very well. You can try this.

 if (android.os.Build.VERSION.SDK_INT == 25) {
                ToastCompat.makeText(context, message, Toast.LENGTH_SHORT)
                        .setBadTokenListener(toast -> {
                            Log.e("failed toast", message);
                        }).show();
            } else {
                Toast.makeText(context, message, Toast.LENGTH_SHORT).show();
            }

answered Sep 21, 2018 at 6:31

Sujeet Kumar Mehta

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3 Comments

Alpesh Gujarati Over a year ago

I am having the same issue in android 7.1 .. in my case it is popupwindow. i am trying to display spinner as dropdown inside popupwindow. which causes crash on android 7.1 only. spinner as dialog is working fine. but i need dropdown. can anyone help me out please.

Leszek Over a year ago

Hello @AlpeshGujarati - identical problem here: a Spinner inside a PopupWindow crashes, actually not only on Android 7.1, but on 7.1 and everything below (I've tested API versions 23,24,25 --> all crash, everything >=26 works fine) No solution yet...

Leszek Over a year ago

Actually android:spinnerMode="dialog" helps!

Mehedi Hasan Sarik · Accepted Answer · 2018-07-26 06:58:21Z

-3

Use Asynctask or Handler like:

Use private Handler mHandler = new Handler() {
@Override
public void handleMessage(Message message) {
switch (message.what) {
  case DISPLAY_DLG:
    if (!isFinishing()) {
    dialogDownload.show();
    }
    break;
  }
 }
};

answered Jul 26, 2018 at 6:58

Mehedi Hasan Sarik

12 bronze badges

1 Comment

Mike Over a year ago

Like author stated - he checks whether activity isFinishing right now

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