swift5

问题 I want to use Firebase with Swift 5, but error message appears. Could not build Objective-C module 'Firebase' I tried all resolutions on below pages, but I can't solve it: Error: Could not build Objective-C module 'Firebase' https://github.com/firebase/quickstart-ios/issues/672 import UIKit import Firebase @UIApplicationMain class AppDelegate: UIResponder, UIApplicationDelegate { var window: UIWindow? func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions:

问题 I have a view controller with a table. The view controller has a button that segues to another controller with 4 textfields. There is a name textfield and three others where numbers can be inputed. When a user presses add, an array is appended and the view controller is dismissed while updating the table in the previous view controller. The user is then presented a table with a new cell added. The cell has 4 labels. I am trying to figure out how to set each label in a cell to the 4 textfields

问题 I'm working through Apple's SwiftUI tutorial on building lists and navigation, and I can't seem to find any documentation for this List initializer, or the identified(by:) method of the Array type: struct LandmarkList: View { var body: some View { List(landmarkData.identified(by: \.id)) { landmark in } } } When I right-click on the List initializer and click Jump to Definition in Xcode, it takes me to this initializer which isn't right. When I do the same for the identified(by:) method, it

问题 I want to achieve the following: Whenever someone triggers a CoreData save (ie. NSManagedObjectContextDidSave notification gets sent), I'd like to perform some background calculation based the changed NSManagedObject. Concrete example: Assume in a notes app, I want to asynchronously calculate the total number of words in all notes. The problem currently lies with the fact that NSManagedObject context is explicitly bound to thread and you are discouraged from using NSManagedObject s outside

问题 I want to achieve the following: Whenever someone triggers a CoreData save (ie. NSManagedObjectContextDidSave notification gets sent), I'd like to perform some background calculation based the changed NSManagedObject. Concrete example: Assume in a notes app, I want to asynchronously calculate the total number of words in all notes. The problem currently lies with the fact that NSManagedObject context is explicitly bound to thread and you are discouraged from using NSManagedObject s outside

问题 I want to achieve the following: Whenever someone triggers a CoreData save (ie. NSManagedObjectContextDidSave notification gets sent), I'd like to perform some background calculation based the changed NSManagedObject. Concrete example: Assume in a notes app, I want to asynchronously calculate the total number of words in all notes. The problem currently lies with the fact that NSManagedObject context is explicitly bound to thread and you are discouraged from using NSManagedObject s outside

问题 This question already has answers here : Swift double to string (14 answers) Closed 9 months ago . I'm getting the data from the api response I decoded the data properly then I assigned the values to tableview cell But I'm getting the warning Cast from 'Double' to unrelated type 'String' always fails how can I solve this , So that I can assign the double value to the UILabel and get my result I tried this following code var rate : Double cell.priceOfVehicleLabel.text = details.rate as? String

问题 This question already has answers here : Swift double to string (14 answers) Closed 9 months ago . I'm getting the data from the api response I decoded the data properly then I assigned the values to tableview cell But I'm getting the warning Cast from 'Double' to unrelated type 'String' always fails how can I solve this , So that I can assign the double value to the UILabel and get my result I tried this following code var rate : Double cell.priceOfVehicleLabel.text = details.rate as? String

问题 I want to color the buttons as colors array above. For eg: if a user first selects any button then the color of that button should be orange, and if the user selects another button then it should be green and so on. The user can select upto 7 buttons from the total of 10 buttons and if 7 different buttons are selected, then they should have 7 different color. import SwiftUI struct ColorModel: Identifiable { let value: Color let id = UUID() } let colors = [ ColorModel(value: Color.orange),

问题 I had implement Sign In with the apple button. It's functionality working. But the issue is its title looks like " SIGN_IN_WITH_APPLE " instead of " Sign in with Apple ". here is my code. let authorizationButton = ASAuthorizationAppleIDButton() authorizationButton.cornerRadius = 10 authorizationButton.addTarget(self, action: #selector(handleLogInWithAppleIDButtonPress), for: .touchUpInside) cell.signInStack.addArrangedSubview(authorizationButton) And How it's look 回答1: I tried let button =