In my codes there is two fragment. List page and detail page. There is lot of alphabetic item on list page. And when i clicked some item opening the detail page. But when i press back button, the list doesn't stay same position. It goes to the top. I searched some solution but i think that's not common issue. I couldn't find different answers. Is there anyone to help me?
Everything works fine in my app but when I press the back button (I mean exit app) the app is crashing. And I don't know why? I tried a couple of solutions but nothing works. It's a sounds/ringtones application.
Here my code
And this is my error logs.
How should I resolve this error? Any help would be great. Thanks.