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

In my case I was trying to create my dialog like this:

new Dialog(getApplicationContext());

So I had to change for:

new Dialog(this);

And it works fine for me ;)