ios6

问题 Just as an app utilizes different storyboards for iPad and iPhone, I would like my app to use a different storyboard for the iPhone 5. Since there is no option in the Info.plist to select default storyboard for iPhone 5, how would I programmatically call the storyboard? I do not want to use AutoLayout for this app unless it is absolutely the last resort. I understand how to detect if a user is using an iPhone 5 or other device with the same screen size. I just need to know how to set the

问题 I cannot launch the simulator successfully. Once I launch the IOS Simulator this error appears: "Unable to boot the IOS Simulator." Following the IOS Simulator error, I then get an error from Xcode reading: Unable to run app in Simulator An error was encountered while running (Domain = DTiPhoneSimulatorErrorDomain, Code = 2) UPDATE: This might sound silly but I went to Xcode/preference/Downloads with intentions of seeing a IOS 8.0 Simulator but there was none. Could this be the problem? Am I

问题 I have an app that uses the iPhone's contacts. With iOS 6, the user will be prompted for Contact access on the first try. At this point, the user can hit 'Allow' or 'Don't Allow'. The problem is when the user backgrounds the app, and then navigates to Settings->Privacy->Contacts to toggle the Contact privacy setting for my app. Once it is toggled, I can see on the console that my app: Application 'UIKitApplication:com.myApp' exited abnormally with signal 9: Killed: 9 I can't find any

问题 How the iOS6 decides if the app must be run in letterbox/compatibility mode on iPhone 5? Is this a build settings parameter (like the "Targeted device family")? Or all apps build against the latest SDK MUST support iPhone 5 screen size? Or the app will be run in letterbox mode is there is not a 1136x640 Default.png splashscreen ? Or what else? 回答1: The app will run in letterbox mode if there is no 1136x640 Default.png splashscreen. The image must be called Default-568h@2x.png (if your

问题 How the iOS6 decides if the app must be run in letterbox/compatibility mode on iPhone 5? Is this a build settings parameter (like the "Targeted device family")? Or all apps build against the latest SDK MUST support iPhone 5 screen size? Or the app will be run in letterbox mode is there is not a 1136x640 Default.png splashscreen ? Or what else? 回答1: The app will run in letterbox mode if there is no 1136x640 Default.png splashscreen. The image must be called Default-568h@2x.png (if your

问题 I'm trying to transition my app to the new Facebook SDK 3.1 (with support for iOS6 authentication). I had it working just fine, so I then decided to remove the app from my list of authorized apps on the FB website in order to test that iOS would ask for permission again. Now my first call to [FBRequest requestForMe] causes this error: Response: { "error": { "message": "Error validating access token: Session does not match current stored session. This may be because the user changed the

问题 In iOS6, shouldAutorotateToInterfaceOrientation is deprecated. I tried to use supportedInterfaceOrientations and shouldAutorotate to make app working correctly for autorotation but failed. this ViewController I don’t want to rotate, but it doesn't work. - (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation { return (interfaceOrientation == UIInterfaceOrientationPortrait); } -(BOOL)shouldAutorotate { return NO; } -(NSUInteger)supportedInterfaceOrientations

问题 I want to create a circular progress bar like the following: How can I do that using Objective-C and Cocoa? How I started doing it was creating a UIView and editing the drawRect, but I am bit lost. Any help would be greatly appreciated. Thanks! 回答1: The basic concept is to use the UIBezierPath class to your advantage. You are able to draw arcs, which achieve the effect you're after. I've only had half an hour or so to have a crack at this, but my attempt is below. Very rudimentary, it simply

问题 What is the best way to take advantage of the new auto layout features of iOS 6 while still providing compability with older devices on earlier versions of iOS? 回答1: Autolayout can be enabled or disabled on each .storyboard or .xib file. Just select the particular file and modify the "Use Autolayout" property using the File inspector in Xcode: Using autolayout enabled interface files with the deployment target set to an iOS version prior to 6.0 results in compilation errors, e.g.: Error in

问题 I have a simple program which was working with IOS4 and 5. Now with IOS 6 I'm getting the following error message: 2012-10-05 11:08:16.386 app[1698:19d03] 2012-10-05 09:08:11 +0000 2012-10-05 11:08:18.072 app[1698:19d03] 2012-10-05 09:08:11 +0000 2012-10-05 11:08:19.273 app[1698:19d03] 2012-10-05 09:08:11 +0000 2012-10-05 11:08:19.274 app[1698:19d03] 2012-10-05 09:08:11 +0000 2012-10-05 11:08:19.275 app[1698:19d03] 0 2012-10-05 11:08:25.055 app[1698:19d03] 2011-10-05 09:08:11 +0000 2012-10-05