My iOS app works in simulator but instantly crashes when I try to open it on my phone

Question

[EDIT] Possible fix: my ipa was unsigned, I bought a Developer's account and will test tomorrow with a signed .ipa. [/EDIT] This is my second app. It's very simple, all it does is send a post request to my server, and display a response. It works perfectly on the iOS simulator on Xcode, but when I push the ipa to my phone, it just crashes. A friend of mine also tested it, and the same happened. Can you please take a look at the code? It's not that long: https://drive.google.com/file/d/0ByoF_XNJWlVyeHJHdHp3LVdTS3c/view?usp=sharing Here's the ipa: https://drive.google.com/file/d/0ByoF_XNJWlVyeGJrNldMb1BPMVE/view

I also can't/don't know how to get a crash report for the app on my phone, so if you need that I'd need help on how to get it too.

Thanks in advance!

Answer 1

It would be helpful if you could paste the crash report, you can connect your device and debug it for the same.

Possibility is : You might have built your app using iOS SDK 8.0 or above and trying to run it on a lower version. Also, to make it compatible with your device you need to avoid using methods that are introduced in iOS8.

Answer 2

Add this before you make post request to check if the internet is connected or not ..

NSURL *scriptUrl = [NSURL URLWithString:@"http://www.google.com"];
NSData *data = [NSData dataWithContentsOfURL:scriptUrl];
if (data){
    [self yourPostMethod];
}

else{
    UIAlertView *alert = [[UIAlertView alloc]initWithTitle:@"Network not Reachable" message:@"Please check your internet connection!" delegate:nil cancelButtonTitle:@"OK" otherButtonTitles:nil, nil];

        [alert show];
}

Answer 3

As you have mentioned you have developed app using Xcode 5.1 and deployment target to 7.1 .
If you want to make sure it should work onlatest versions, you need to update your xcode and set base sdk to latest and deployment target you can set 7.0

Answer 4

购买开发者帐户解决了我的问题。