Cannot declare variable inside @interface or @protocol

Question

I have an iOS app built since the beginning with an error in it. Since the source was began constructed from the template, its appdelegate.h looks like:

@interfa         


        

Answer 1

Are you trying to define them as public members on a class? Classes in Objective-C are rather different than in other languages you might be familiar with. Outside of the curly braces you can only define methods. If you want to make a publicly-accessible member, define them as properties:

@interface myAppDelegate : NSObject  {
    UIWindow *window;
    myViewController *viewController;
    BOOL _myBool;
    NSString *_myString;
}

@property BOOL       myBool;     // intended to be globally accessible
@property NSString   *myString;  // intended to be globally accessible

@end

Then in your @implementation do something like:

@implementation myAppDelegate
@synthesize myBool = _myBool;
@synthesize myString = _myString;

Then you can access them as myObject.myBool and so on.

If you are just trying to make them into static ("global") data for all instances of the class, then as other posters have said, you want to move the definition into your .m file (and ideally declare them static so they won't cause link issues).