userinteract stop untill activityIndicator stops
<p>I am parsing an xml, and showing the parsed data into Tableview.
Untill the data is fully parsed, i show a activityIndicator ,to user.
As the data gets loaded, i make activityIndicator stop.
The problem is, if user hits back button before the xml gets parsed, my app gets crashed.</p>

<p>What should i do prevent user to go back,untill table view come up with fully parsed data. or 
if user hits back before the xml gets parsed,my app shouldnt be crashed.</p>

<p>w8ing for reply</p>

<p>thanks and hv a nice day</p>
