ProgressDialog giving error, while I am using in onCreate() of activity that is in activity group?

Your problem is that you try to modify the ui from non the ui-thread. Use handlers for such things. Here is a good example.

Can you give a sort example, please. – Pankaj Kumar Mar 9 at 11:00 updated the answer. – Vladimir Ivanov Mar 9 at 11:10 I am not understanding how to implement it.

I tried but not succeed. – Pankaj Kumar Mar 9 at 11:49.

Or you can also try like below replace dismissDialog(CONTACT_DIALOG_ID); with below code runOnUiThread(new Runnable() { @Override public void run() { dismissDialog(CONTACT_DIALOG_ID); } }).

Not working. Error is same. – Pankaj Kumar Mar 9 at 10:59.

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