On showing dialog I get “Can not perform this action after onSaveInstanceState”

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This is common issue.
We solved this issue by overriding show() and handling exception in DialogFragment extended class

public class CustomDialogFragment extends DialogFragment {

    @Override
    public void show(FragmentManager manager, String tag) {
        try {
            FragmentTransaction ft = manager.beginTransaction();
            ft.add(this, tag);
            ft.commit();
        } catch (IllegalStateException e) {
            Log.d("ABSDIALOGFRAG", "Exception", e);
        }
    }
}

Note that applying this method will not alter the internal fields of the DialogFragment.class:

boolean mDismissed;
boolean mShownByMe;

This may lead to unexpected results in some cases. Better use commitAllowingStateLoss() instead of commit()

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