I began an iPhone project the other day with a silly development code name, and now I want to change the name of the project since it’s nearly finished. But I’m not sure how to do this with Xcode, trying the obvious of changing the application’s name in the info.plist file, causes the signing process … Read more
Want to improve this post? Provide detailed answers to this question, including citations and an explanation of why your answer is correct. without enough detail may be edited or deleted. Is there any way to tinker with the iPhone SDK on a Windows machine? Are there plans for an iPhone SDK version for Windows? The … Read more
When you tap a row in a UITableView, the row is highlighted and selected. Is it possible to disable this so tapping a row does nothing? 4 42
How can I check if a string (NSString) contains another smaller string? I was hoping for something like: NSString *string = @”hello bla bla”; NSLog(@”%d”,[string containsSubstring:@”hello”]); But the closest I could find was: if ([string rangeOfString:@”hello”] == 0) { NSLog(@”sub string doesnt exist”); } else { NSLog(@”exists”); } Anyway, is that the best way to … Read more
I’m trying to link a UILabel with an IBOutlet created in my class. My application is crashing with the following error. What does this mean? How can I fix it? *** Terminating app due to uncaught exception ‘NSUnknownKeyException’, reason: ‘[<UIViewController 0x6e36ae0> setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key XXX.’ 7 75
I’m getting the following warning by the ARC compiler: “performSelector may cause a leak because its selector is unknown”. Here’s what I’m doing: [_controller performSelector:NSSelectorFromString(@”someMethod”)]; Why do I get this warning? I understand the compiler can’t check if the selector exists or not, but why would that cause a leak? And how can I change … Read more
What I want to do seems pretty simple, but I can’t find any answers on the web. I have an NSMutableArray of objects, and let’s say they are ‘Person’ objects. I want to sort the NSMutableArray by Person.birthDate which is an NSDate. I think it has something to do with this method: NSArray *sortedArray = … Read more
I would like to check to see if I have an Internet connection on iOS using the Cocoa Touch libraries or on macOS using the Cocoa libraries. I came up with a way to do this using an NSURL. The way I did it seems a bit unreliable (because even Google could one day be … Read more
I’m new to iOS and Objective-C and the whole MVC paradigm and I’m stuck with the following: I have a view that acts as a data entry form and I want to give the user the option to select multiple products. The products are listed on another view with a UITableViewController and I have enabled … Read more
What setting do I need to put in my info.plist to enable HTTP mode as per the following error message? Transport security has blocked a cleartext HTTP (http://) resource load since it is insecure. Temporary exceptions can be configured via your app’s Info.plist file. Assume that my domain is example.com. 2 29 Use NSAppTransportSecurity: You … Read more
