xcode4

问题 Can't get this to work. I downloaded a distribution cert but it stil gives me this problem. Also, organizer says that there aren't any valid identity or profile pairs. 回答1: Verify below steps to create distribution certificate and perform that if you miss anyone. 1) Generate a certificate signing request in keychain. 2) Using that create or revoke a DISTRIBUTION certificate in the portal. after that download and install it and verify key under the name. 3) Register the device in the

问题 I've recently been writing some basic command-line programs (I want to keep my skills sharp over the summer), but printf and scanf have been starting to annoy me. I'm not a wonderful C programmer, and having to get into printf / scanf and their instabilities (or even worse, fgets and their ilk) isn't exactly putting me in a comforting setting (for this reason exactly, I love NSLog , with its comforting default namespace and its automatic NSString and NSObject parsing). Much to my

问题 I have been unable to work out how to edit build settings using the pop-up shown below. I can enter multiple lines in the pop-up by clicking the '+'. My questions are :- What is the checkbox next to the setting used for? Once I have entered one or more settings in the pop-up, how do I make them transfer to the setting I am editing. There isn't a 'Save' button, and clicking off the pop-up closes it but doesn't seem to save the entered data. Thanks 回答1: To delete, check the checkbox and click "

问题 I'm new to developing apps for OSX. I want to write a library that does a specific job in C++ and use it inside my XCode Objective-C/Objective-C++ project. How should I compile and prepare the C++ library so it can be imported into XCode? 回答1: There are Xcode templates for C++ libraries. Just make one of those and copy the library's source into it. 回答2: You need to set Compile Sources As: Objective-C++ in your build settings. 来源： https://stackoverflow.com/questions/8894084/how-to-import-a-c

问题 I'm new in Objective-c. I want to make an HTTPRequest to an API. This works, I get my response in an NSData object. This response is a json response. How can I parse my response to get a dictionary with key: value format? I used this code to get the data: data = [NSURLConnection sendSynchronousRequest: req returningResponse: nil error: nil]; Thanks 回答1: Use NSJSONSerialization (iOS5+) to convert JSON strings to Cocoa objects ( NSDictionary in your case) and vice-versa. PS : If you need to

问题 What are the standard arguments in the main file. I think I have set the wrong standard arguments in the main file, and need to change them back. I think the problem is the nil and nil in the UIApplicationMain arguments. Here is the code I have: #import <UIKit/UIKit.h> int main(int argc, char *argv[]) { NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init]; int retVal = UIApplicationMain(argc, argv, nil, nil); [pool release]; return retVal; } Error code: Attaching to process 1420. 2011

问题 I am a total beginner with Xcode and Objective C, but I have some experience with OOP in C++. I bought this book. I read about how to make a simple app, and skimmed the rest of the book. What I want to do is make an iPhone app people can use to look up math equations such as the quadratic eqauation, pythagorean identity, etc. I plan to include a lot of stuff, and do a lot of things better than other apps I have seen. However, before I pay Apple $99 to be a full fledged iOS developer, I want

问题 When creating a Cocoa Touch Static Library with XCode4, the .a file in the Products groups appear red and building doesnt fix this. Then, when adding this project to another project in the same workspace with Build Phases/Link Binary With Libraries, the build fails at linking. Any pointers? Edit: It looks like a problem with anything I build with XCode4, because no matter what project I build, the content of Products appears in red. 回答1: I experienced the same bug in Xcode 4. Try building the

问题 From what I've read, the iPhone 5 will use a new architecture, armv7s . My project had valid architectures as armv7 , and had Build Active Architecture Only set to true . Since every app in the store right now is built for armv6 and/or armv7 , I can't imagine that it will not run on the new iPhone. So what occurs? Does it just not run as well as it could? I could just use a better explanation of what is occurring, and what would be different once I rebuild and submit with armv7s as a valid

问题 When you selected text in the code window and right-clicked on it, you would get a context menu with an option to "Search in Project" for the selected text. (Xcode 3.x) Anyone knows how I can achieve the same in Xcode 4? Or a keyboard shortcut? Now I select the text and wrestle my fingers in the following combination CMD-C, CMD-CTRL-F, CMD-V, RETURN. Feels a bit like playing the Playstation... Cheers, Niels R. 回答1: There doesn't seem to be a single keyboard shortcut, but one you might find