xcode4

问题 In the built-in version editor view of Xcode 4 and 5, when it shows the differences between two revisions, how do you jump from one changes to another? I'm looking for something like the Cmd+Down/Cmd+Up shortcut keys of Araxis Merge. 回答1: If you are already in the Version Editor: In the center gutter between the left and right sides, click a revision highlight (blue area) to select it Use the Up/Down arrow keys to navigate through the changes If you are NOT already in the Version Editor do

问题 I'm trying to get a list of assests urls to download. I'm using NSURLConnection in order to get a JSON file that have this list of urls. in - (void)connection:(NSURLConnection *)connection didWriteData:(long long)bytesWritten totalBytesWritten:(long long)totalBytesWritten I'm getting 122239 as total bytes written. when - (void)connectionDidFinishDownloading:(NSURLConnection *)connection destinationURL:(NSURL *)destinationURL is called I'm trying to read the url data in order to extract the

问题 Although Xcode 4 is advertised being aware of cross-project classes of projects in a shared workspace, I didn't find this working and did some research about the problem. The common solution discussed in many threads around here is, to create a static library and link your projects against it. I therefore followed Jonah's guide (http://blog.carbonfive.com/2011/04/04/using-open-source-static-libraries-in-xcode-4/) and created a static library to share frequently used subclasses of UIView with

问题 I just downloaded xcode 4 recently and have read the xcode transition guide, however, I am still wondering how do I get the same feature for debugger in xcode 4 like in xcode 3.2. When I program in xcode 3.2 and run my application, if my code happened to cause a crash in the program, I could just press command+shift+y and I'll get the debugger mode appearing, which will shows which lines that it crashes. However, I can't seem to get this working for xcode 4. I know that I can look at which

问题 Whenever I build my project, I'm getting the error: Command /Developer/usr/bin/momc failed with exit code 1 I've read posts here about deleting extraneous Data Model versions as a fix, and nothing works. I'm stumped because nothing changes the behavior of my Build: It always fail with the above error code, regardless of whether I actually have CoreData model files or not. What I did to cause this error: Switched to a versioning model What I tried: Removing new version of Data model Removing

问题 Every time Xcode crashes it points to this line on main.m int retVal = UIApplicationMain(argc, argv, nil, @"AppController"); I know Xcode 4 debugging stinks compared to 3.x, but how do I make it point to the line where the crash happened. Please don't: Tell me to enable NSZombieEnabled; Tell me to add an exception breakpoint to break for all exceptions on Catch or on Throw. Tell me Xcode 4.x is better than 3.x for debugging. All this stuff is useless or barely useless and Xcode continues to

问题 i've implemented this OpenCV build into my iphone project: http://aptogo.co.uk/2011/09/opencv-framework-for-ios/ It builds successfully and i know how to capture an image with my camera, grayscale it and show it on an imageview. But what i'd like to do is templatematching with the image that i captured (with the camera) against an template image. I have both images grayscaled, but i just don't get how the 'matchTemplate' works. This is what i have so far: cv::Mat grayFrame, grayImg, output; /

问题 When I build my project (any project, really - I tried creating a new empty project with the same results), it builds fine with GCC 4.2 under either Xcode4 or Xcode 3.2.4. If I build using LLVM 2.0 under Xcode4 or with LLVM 1.5 under Xcode3, I get compile-time build failures, but only when building for the Simulator. The build errors that I get under LLVM are all in headers over which I have no control, such as UIView.h, UIDevice.h, UIApplication.h, UITextView.h and UIWebView.h in UIKit and

问题 I'm trying get set a #define macro when doing a command line build using xcodebuild and having no luck. I've tried -DMYMACRO=1 and MYMACRO=1 everything else I can think of and nothing works. How do you set a #define from the command line? 回答1: Roger, What you are looking for is a way to set GCC_PREPROCESSOR_MACROS via the command line tool xcodebuild. The man page for xcodebuild shows the format for applying these settings, however the SYNOPSIS section only refers to this as "setting=value ..

问题 I am new to Xcode4, how to set malloc_error_break in Xcode4. malloc: *** error for object 0x686a240: double free *** set a breakpoint in malloc_error_break to debug 回答1: If in Xcode 4, go to breakpoint navigator View/Navigators/Show Breakpoint Navigator at the bottom, add a new breakpoint by clicking on the '+' plus sign and choose Add Symbolic Breakpoint that you'll name it.... "malloc_error_break" 回答2: In Xcode 4.5.2 its (From the menu bar): Product, Debug, Create Symbolic Breakpoint 来源：