xcode4.2

问题 I am facing what seems to be a pretty wide spread issue : when I activate code coverage in Xcode (4.2.1) with Lion it shows the following error : Detected an attempt to call a symbol in system libraries that is not present on the iPhone: fopen$UNIX2003 called from function llvm_gcda_start_file I followed the workaround described here and added a file to my test target with a mapping for the fopen function but it won't work for me. With the new C file, I get a lot of Parse and Semantic issues,

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 Here I am stuck in another problem,am working on an iOS Application today and as i run my Application for iPhone 5.0 Simulator got some weird issue on that simulator only. There were two window pop Over alert on my MacBook Screen when i was trying run again and again getting same issue for that simulator only.that pop over alert windows showing below quotation. "iOS Simulator could not find the SDK. The SDK may need to be reinstalled." "The simulated application quit." It seems that this

问题 I have tried to clean out all targets and caches, restart Xcode, reset the simulator, kill all simulator processes and also restart my laptop, but nothing works and the following error still shows: Couldn't register com.yourcompany.myApp with the bootstrap server. Error: unknown error code. This generally means that another instance of this process was already running or is hung in the debugger. 回答1: Many have had this kind of error like here. I restarted my Mac and this error did not

问题 While i finished developing an in-app-purchase application, and after several testing on iPad/Iphone, every thing was fine, the images of table view's cells and its hight was exactly as wrote in code, so i upload the application, when it was processed to the app Store, i download it, the table view cells in both IPhone/IPad were in different sizes much bigger size then that was set while testing,so the image in cells was like stretched!!!!and not clear, i tried to test it then directly via

问题 I'm in the process of learning Objective-C for the iPhone and the biggest hurdle I currently have is that most of the old tutorials aren't based on ios5. In general that's fine because I don't want to use storyboards yet until the adoption of ios5 picks up so the tutorials are fine if I ignore the garbage collection instructions. However, the problem I'm running into is that most tutorials have you start out with a "Navigation-based Application" or a "Window based Application" and these no

问题 I am attempting to create a very basic login screen, using the Storyboard designer in Xcode 4.2. I'd like a grouped table view to contain the login and password fields. There are some other elements on the view, such as a login button, a forgot password link, etc. Additionally, the background should be able to be tapped to dismiss the keyboard, when a input field has focus. Pre-Xcode 4.2, I accomplished this with a UIView that implemented the UITableViewDataSource protocol, generated and

问题 I am just starting to learn Objective-C programming. I'm developing in Xcode 4.2 on Mac OS X version 10.7.2 on an iMac. I am reading the book "Programming in Objective-C" by Stephen Kochan, which contains a simple "Hello World" example: #import <Foundation/Foundation.h> int main (int argc, const char * argv[]) { NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init]; NSLog (@"Hello, World!"); [pool drain]; return 0; } It bombs out with lots of errors when compiling: /Developer/SDKs

问题 i know that this question has been posted a lot of times but the suggested solutions doesn't fit my case, when i try to build and run my app on the simulator, i got this error and it crashes: Couldn't register test.My-App-Name with the bootstrap server. Error: unknown error code. This generally means that another instance of this process was already running or is hung in the debugger. I tried to create a new app with Xcode with the same name but i got the same issue. However, when i try to

问题 I have a question about Cocos2D. I have 2 scenes in my game both have a lot of sprites on the scene. What happened when I replace the one scene and load another? Are all sprites removed automatically or it is taking memories and will be release when I release in dealloc of the scene? I am unable to understand of this thing how the memory manage in this condition, so can any one explain me that thing and one thing more is this is important for us to make the sprite retain when we load it on