Android 'Unable to add window — token null is not for an application' exception

Question

I get the following Android exception when I try to open a dialog. Can someone please help me understand what is going on and how can I fix this problem?

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Answer 1

Hello there if you are using adapter there might be a chance.
All you need to know when you used any dialog in adapter,getContext(),context or activity won't work sometime.

Here is the trick I used v.getRootView().getContext() where v is the view object you are referencing.
Eg.

            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub
                new DatePickerDialog(v.getRootView().getContext(), date, myCalendar
                        .get(Calendar.YEAR), myCalendar.get(Calendar.MONTH),
                        myCalendar.get(Calendar.DAY_OF_MONTH)).show();
            }
        });  
If you are getting this problem because of alert dialog.
Refer [here][1] But it is same concept.


  [1]: https://stackoverflow.com/questions/6367771/displaying-alertdialog-inside-a-custom-listadapter-class