Objective C, Thread 1 Program Received Signal SIGABRT [duplicate]

Answer 1

thread 1 program recived singal sigabrt

some times NSString value is goes to nill!

it may cause this while initialization of your application!

Answer 2

You have an error in your NIB/XIB file.

It looks like you have previously attached an IBOutlet (textInput) and now the connection is broken. You should double check all connections in Interface Builder.

Answer 3

It's likely that you have set the type of 'File's Owner' incorrectly to UIViewController in your SimpleUIViewController's xib. Please set it to SimpleUIViewController in identity inspector pane.

Answer 4

To fix it, load the XIB in Interface Builder, select the File Inspector tab, and uncheck Use autolayout. Alternatively, you can target iOS 6.0+-only devices and change the minimum target, if you absolutely must have autolayout.

NSLayoutConstraint SIGABRT on iPad

Answer 5

Now I see it! Your crash report says:

Unknown class InterfaceBuilderAppDelegate_iPhone

So, it seems that you set your App Delegate in IB to this class, but this class is not available in your project. Check this. Either you misspelled the class name or you should add the relevant class to your project.

Highly likely, your text field is connected to this app delegate.

Have you connected your text field in Interface Builder to the SimpleUIViewController outlet?

Since it seems from the tutorial that you are not using MainWindow.xib, I would say that your project is missing running the proper delegate. Try making this change in your main:

int retVal = UIApplicationMain(argc, argv, nil, @"SimpleUIAppDelegate");

If my hypothesis is right, that should move your forward.