App Suddenly Closes

Fellow developers. My thanks to you all for your help and suggestions.

My app SafetyKnight has been approved for sale by Apple and I have submitted an inApp Purchase version for approval.

One last 'bug开发者_运维技巧.' When first opening my app, it sometimes quits unexpectedly. Not often. But only rarely sometimes.

Does the MKMap or maybe not strong signal from communications provider cause an app to cut out at start-up?

Any thoughts or suggestions of code I might add to NOT have the app close/crash to enhance the user experience?

Check your app's memory usage during launch and initial view display. The app might be running out of memory if a lot of other Apple processes (or background apps) are running (Mail fetch, music player, etc.). Also make sure you are checking all your error and status return values from your networking code.

From the Organizer, you can access crash reports of any device connected to your computer. Make your application run in debug mode on the device until it crashes and check in debugger where it happens.

Did you handle the low memory notifications in the didReceiveMemoryWarning methods of the relevant UIViewControllers? What is the iOS you are building against?