xcode

问题 Few days ago we had problem with our release build for IOS. We were getting Module AppRegistry is not a registered callable module error. In Debug configuration everything went well. 回答1: After some time we found out that when you run your code in develop configuration your index.js is created and provisioned to device via localhost connection. But when you're in release, you use react-native-xcode.sh script as a build step in xcode. This script creates index.js for you. BIG problem is that

问题 I'm signing app using "Automatically manage signing". If I change "Build Configuration" to "Release" mode, What provisioning profile used for build an app? Release(Production) or Development? Is there anyway to check what provisioning profile (Development or Production) used for building app after app running? When I testing remote push notification, I set build configuration to "Release", could not receive any notification from server using production .p12 file. But when I downloaded app

问题 I have set my UIView background colour to a CAGradient layer which works well. I am trying to change this gradient within the application when it is running. If i close and reload the app the new gradient is applied but i want this to work during run time. CAGradientLayer *gradient = [CAGradientLayer layer]; gradient.frame = self.backGroundView.bounds; gradient.colors = [NSArray arrayWithObjects:(id)[[UIColor whiteColor] CGColor], color.CGColor, nil]; [self.backGroundView.layer insertSublayer

问题 I have made an UIView extension to set my NSLayout anchors. Everything works just fine. But how can I modify my extension if I wanted to add an NSLayoutConstraint so I could animate the constraints afterward? Here is my current extension: extension UIView { func anchor(top: NSLayoutYAxisAnchor?, leading: NSLayoutXAxisAnchor?, bottom: NSLayoutYAxisAnchor?, trailing: NSLayoutXAxisAnchor?, padding: UIEdgeInsets = .zero, size: CGSize = .zero) { //translate the view's autoresizing mask into Auto

问题 It's possible to sort an array like this: MutableArray = [NSMutableArray arrayWithObjects:@"5",@"1",@"7,@"9",@"4", nil]; to (start big ends small): MutableArray = [NSMutableArray arrayWithObjects:@"9",@"7",@"5,@"4",@"1", nil]; Is it also possible to sort two arrays: MutableArray = [NSMutableArray arrayWithObjects:@"5",@"1",@"7",@"9",@"4", nil]; MutableArray = [NSMutableArray arrayWithObjects:@"Andy",@"Mike",@"Bob",@"Amy",@"Alex", nil]; to (from big to small, but Andy got 5 point, Mike got 1

问题 I have finally created a tableview that will be populated with a certain amount of options for the user to click. Ideally, I would like the user to click a row, which will display a image on a second controller depending on the choice the user makes. For instance, "photo1" would display 1 picture on Controller B, while "photo 2" would display a different picture on Controller B. What code can I implement into my existing table view code to send to the second controller? import UIKit class

问题 I have finally created a tableview that will be populated with a certain amount of options for the user to click. Ideally, I would like the user to click a row, which will display a image on a second controller depending on the choice the user makes. For instance, "photo1" would display 1 picture on Controller B, while "photo 2" would display a different picture on Controller B. What code can I implement into my existing table view code to send to the second controller? import UIKit class

问题 I am trying to print a date (e.g. a birthdate) using the following code (swift 4.0, Xcode 10.2): let formatter = DateFormatter() formatter.timeStyle = .short formatter.dateStyle = .short formatter.locale = Locale(identifier: "en_US") formatter.dateFormat = "yyyy/MM/dd HH:mm" let DOB = formatter.date(from: "2019/05/01 22:30") when print(DOB) I got, "2019-05-02 05:30:00 +0000" It looks like none of the Local, .short settings affected the results. What's wrong. How do I get to simply print:

问题 The backbutton in Xcode is super useful for me, especially when I CMD+CLICK to see a declaration, but I always have to use the mouse to click the arrow back button. Is this configurable to hot key? Thanks!!! 回答1: ^⌘← unless I redefined that :P Press "⌘," and go to Key Bindings to see the whole list. You can type "back" in the search box. 回答2: I have a Logitech mouse with physical back/forward buttons. By default these buttons map to ⌘[ and ⌘]. Unfortunately these keystrokes default in Xcode

问题 I have an element I need to animate and I followed this question to transform it as follows. I defined a button that when I click it, the view would move horizontally. However, I need to define certain functions after the transformation (For example, I would need the print statement to be working after the transformation is completed in 5 seconds). But currently, it is printed simultaneously. How can I define functionality to be done after the transformation. @IBAction func mybutton(_ sender: