swift3

问题 I am migrating my project from Swift 2.3 to Swift 3. And having difficulty as expected. Here is a function which is being used for OAuth, using OAuthSwift. I have tried to convert class func OAuthSwiftAuthorization(inViewController viewController: UIViewController, withOAuthInfo info:FitnessTracker, successHandler:@escaping MyOAuthNewSuccessHandler, failure: @escaping ((_ error: NSError) -> Void)) { let oauthswift = OAuth2Swift( consumerKey: info.consumerKey, consumerSecret: info

问题 I want to show the status bar on portrait mode only, when I rotate the screen the status bar hides as intended but if I push / show a new View Controller the status bar appears again. I've tried the following without success: Setting View controller-based status bar appearance to NO in the info.plist file Using setNeedsStatusBarAppearanceUpdate() on self and on NavigationController Setting prefersStatusBarHidden: Bool to true Also tried UIApplication.shared.setStatusBarHidden(true, with:

问题 Trying to create a Swift playground on the iPad that will display in full screen. I have tried obtaining the bounds of the screen using UIScreen.main().bounds , but the display just becomes too large for the default playgrounds frame. I know that this is possible because all of the example playgrounds are fullscreen. I just can't figure out how it is being done. Update 1: Here is a photo. I want the white frame to take up the entire screen. 回答1: Each ".playgroundpage" folder has a Manifest

问题 I am attempting to convert my Swift 2 code into the latest syntax(Swift 3). I am receiving the following error: Cannot invoke initializer for type 'UnsafeMutablePointer<CUnsignedChar>' with an argument list of type '(UnsafeMutableRawPointer!) Swift 2 Code: let rawData = UnsafeMutablePointer<CUnsignedChar>(calloc(height * width * 4, Int(sizeof(CUnsignedChar)))) Can someone please help me resolve this conversion syntax issue? 回答1: calloc returns a "raw pointer" (the Swift equivalent of void *

问题 I am attempting to convert my Swift 2 code into the latest syntax(Swift 3). I am receiving the following error: Cannot invoke initializer for type 'UnsafeMutablePointer<CUnsignedChar>' with an argument list of type '(UnsafeMutableRawPointer!) Swift 2 Code: let rawData = UnsafeMutablePointer<CUnsignedChar>(calloc(height * width * 4, Int(sizeof(CUnsignedChar)))) Can someone please help me resolve this conversion syntax issue? 回答1: calloc returns a "raw pointer" (the Swift equivalent of void *

问题 I'm trying to create a twitter app, emulating the real app, using the twitter API. On the timeline view, I have a regular navigation bar, and when a user taps a user profile, the profile view has a transparent bar so that the user's banner image can be displayed. I used the following code to make the navigation bar transparent in the user profile view: self.navigationController?.navigationBar.setBackgroundImage(UIImage(), for: .default) self.navigationController?.navigationBar.shadowImage =

问题 I try to pause voice over and get an exception: UIAccessibilityPostNotification(UIAccessibilityPauseAssistiveTechnologyNotification, UIAccessibilityNotificationVoiceOverIdentifier) 'NSInvalidArgumentException', reason: 'You must pass the identifier of the assistive technology to pause. See UIAccessibilityConstants.h for the list of valid values.' What's wrong? Thanks! 回答1: You must use an UIAccessibility.AssistiveTechnologyIdentifier like: UIAccessibility.post(notification:

问题 I try to pause voice over and get an exception: UIAccessibilityPostNotification(UIAccessibilityPauseAssistiveTechnologyNotification, UIAccessibilityNotificationVoiceOverIdentifier) 'NSInvalidArgumentException', reason: 'You must pass the identifier of the assistive technology to pause. See UIAccessibilityConstants.h for the list of valid values.' What's wrong? Thanks! 回答1: You must use an UIAccessibility.AssistiveTechnologyIdentifier like: UIAccessibility.post(notification:

问题 Here black border shows the Parent UIView of UIImageView and Red border showing UIImageView i'm downloading image from server but the image is going outside of the UIImageView area as shown in the image. I'm doing it programmatically any help would be very much appreciated. I'm adding code block below let bottomView : UIView = UIView(frame: CGRect(x : 10, y: stackView.height, width: view.width * 0.75, height: view.width * 0.75 )) view.addSubview(bottomView) bottomView.layer.borderColor =

问题 I am able to get a response without the :status : accept expression attribute value but with it, I get the following error when I am using the #status in the projectionExpression line (status is a reserved word in DynamoDB so I had to add hashtag there per https://stackoverflow.com/a/45952329/5921575): Error Domain=com.amazonaws.AWSCognitoIdentityErrorDomain Code=0 "(null)" UserInfo={__type=com.amazon.coral.validate#ValidationException, message=Value provided in ExpressionAttributeValues