xcode：运行模拟器时出现AppDelegate错误

Question

I'm new to xcode and I'm trying to create an app which uses an sqlite database to display some data but I get this line of code highlighted in AppDelegate.h when running the simulator.

@autoreleasepool {
    return UIApplicationMain(argc, argv, nil, NSStringFromClass([AppDelegate class]));
}

I tried a few solutions from similar questions but I couldn't fix it. any suggestions?

Answer 1

That's just a top level error you see when there is another problem. Check the console for a more detailed error message.

Alternatively, you can set Xcode to break on exceptions, which will probably help you isolate the source of the error.

http://blog.manbolo.com/2012/01/23/xcode-tips-1-break-on-exceptions