xcode4.3

问题 Prior to Xcode 4.3, if you wanted to use a method before you declared its implementation, you were required to forward declare the method (as with a C function prototype). This would usually be done in a class continuation (AKA class extension, private category). There's a good example in this question: Private Methods in Objective-C, in Xcode 4.3 I no longer need to declare them in my implementation file ?. As of 4.3, this is no longer required; DRYers rejoice. But can this magic be turned

问题 Does anybody know why home button is missing for iPad simulator only? 回答1: See http://openradar.appspot.com/11017007 for the real answer: "Engineer who removed the bezel from scaled iOS Sim not thanked enough, probably" 回答2: Its a simple redesign to make more space for the simulator screen. You can trigger the home button from the menu Hardware > Home Or using the shortcut: ⇧ ⌘ H . 回答3: I don't think this is an enhancement at all. This is by far a notorious bug and a bad one. I know that home

问题 What are the numbers in the Stretching box in the View sub-box Interface Builder's Attributes Inspector? (as a side question - I suppose a respectable company such as Apple would have actually released documentation for its tools, as opposed to letting developers just guess everything; so, where's this documentation?...) 回答1: This blog post Karol seems to explain it pretty well. - http://macoscope.com/blog/stretchable-images-using-interface-builder/ Stretching properties are pretty simple (I

问题 I accidentally replace one of the .h file in Xcode.Thus the current .h file is empty. Is there anyway i can retrieve it back as it is alot of work. please kindly provide me with a solution. Thank you. 回答1: If your project is under Git , and you committed your last version to Git , you can revert to last version. Else, if you have Time Capsule and you enabled it, you can revert to older time of the document. Last, if you have none of the above and you have no luck with Cmd + Z , then you have

问题 The package Apple provides to install the command line tools with Xcode 4.3 is corrupted, and I seem to need it because I'm developing some command line tools. Has anybody found an alternative Command Line package for Xcode 4.3 from Apple that works or an workaround for the subject? 回答1: Xcode includes a new "Downloads" preference pane to install optional components such as command line tools, and previous iOS Simulators. 回答2: So, I found a way to do this correctly. The problem is really in

问题 I have implement Zxing Barcode Scanner in ipad using PhoneGap 1.7.0 and Zxing Barcode Scanner from https://github.com/phonegap/phonegap-plugins/tree/master/iOS/BarcodeScanner. But the orientation is portrait only. I want to change it to landscape by modify this code if ([previewLayer isOrientationSupported]) { [previewLayer setOrientation:AVCaptureVideoOrientationPortrait]; } and this code too if (interfaceOrientation == UIInterfaceOrientationPortrait) return YES; in CDVBarcodeScanner.mm and

问题 I need to compare a string from an url using NSutf8stringencoding in order to return 1 or 0, but it always returns 0 even if the string has value 1. NSString *strURL = [NSString stringWithFormat:@"http://localhost/signup/login.php?username=%@&password=%@",username.text,password.text]; // to execute php code NSData *dataURL = [NSData dataWithContentsOfURL:[NSURL URLWithString:strURL]]; // to receive the returend value NSString *strResult = [[NSString alloc] initWithData:dataURL encoding

问题 I'm running into an issue where a project has multiple developers working on the same storyboard file. As developers add controllers to their own version of the storyboard, the files need to be merged. As I look at a storyboard in plain text format during merge, I can't make sense of what changes I should accept and in which order. Is there some sort of tutorial or a guideline on how to do merge changes from versions of the same storyboard? How do you manage changes to the same storyboard

问题 I've just updated my Xcode from 4.2 to 4.3.3 and i keep coming across a problem is it possible to add a navigation controller in a single view application because when i try to embed one into the controller nothing happens. I would like to have two view controllers connected by a button to the second controller and a navigation bar back to the first view controller. I can't think of any other way to connect the view controllers please help me any-ideas. 回答1: If you don't want to add a

问题 Is there a way to install iPhone Simulator 4.2 in Xcode 4.3 for Lion? I only can find how to install it in Xcode 4.2, but not Xcode 4.3 for Lion. 回答1: I have found a way to install iPhone simulator 4.2 to Xcode 4.3: Follow the instructions by Parth Bhatt, but install the simulator in a temporary folder ('Developer' folder doesn't exists in Xcode 4.3). Once installed, go to <tmp_dir>/Platforms/iPhoneSimulator.platform/Developer/SDKs , and you'll find a file named "iPhoneSimulator4.2.sdk". Open