xcode11

问题 I installed the Xcode-11-beta along with macOS 10.15 beta. At first I can play with SwiftUI preview normally. But after I tried to move the Xcode-beta from the ~/Downloads directory where I initially installed it, to /Applications , the preview can't work. Here is the error: So I moved it back to ~/Downloads , hoping things will go well as before. But it gives the same error. After this, I reinstalled it and I still got this error. Can anyone help me fix it? The content of diagnostics report

问题 Demonstration of whitespace problem When I nest a NavigationView within a NavigationView, an enormous amount of whitespace separates the back button and the new navigation bar title. Is there something I'm doing wrong in terms of setting up my SwiftUI views? import SwiftUI struct Dashboard: View { @EnvironmentObject var user: User let courses = Course.exampleCourses() var body: some View { NavigationView { List(courses) { course in NavigationLink(destination: CourseView(course: course)) {

问题 Demonstration of whitespace problem When I nest a NavigationView within a NavigationView, an enormous amount of whitespace separates the back button and the new navigation bar title. Is there something I'm doing wrong in terms of setting up my SwiftUI views? import SwiftUI struct Dashboard: View { @EnvironmentObject var user: User let courses = Course.exampleCourses() var body: some View { NavigationView { List(courses) { course in NavigationLink(destination: CourseView(course: course)) {

问题 I have a stepper control in the main list view as well as in the detail view. the code is exactly the same. However the stepper in main view is working perfectly, but the subview is stopping after 1 increment (as it looks like the upper bound is set.) The funny thing is it was working some time ago, after improvements, i am not able to trace what exactly changed it s behaviour. Here is the code. struct QuestionCardTest: View { @Binding var question : SurveyQuestion var body: some View {

问题 I have a stepper control in the main list view as well as in the detail view. the code is exactly the same. However the stepper in main view is working perfectly, but the subview is stopping after 1 increment (as it looks like the upper bound is set.) The funny thing is it was working some time ago, after improvements, i am not able to trace what exactly changed it s behaviour. Here is the code. struct QuestionCardTest: View { @Binding var question : SurveyQuestion var body: some View {

问题 I'm moving my Carthage libraries to Swift Package Manager. If my Swift Package has dependencies to other Swift Packages, do I have to explicitly link those libraries into the project like I do with Carthage, or are the nested dependencies embedded in the Swift Package? 来源： https://stackoverflow.com/questions/57659938/explicitly-manage-swift-package-nested-dependencies-required

问题 how can I add a border with a cornerRadius to an Image. I get a deprecation warning saying that i should use a RoundedRectange Shape, but i don't know how to use that exactly Beta 4: Image(uiImage: ...) .border(Color.black, width: 2, cornerRadius: 10) 回答1: SwiftUI 1.0 Using cornerRadius & overlay Modifiers Here is another way in which we can use a cornerRadius modifier (which clips the view) and then overlay a stroke with a color. VStack(spacing: 40) { Text("Image Border").font(.largeTitle)

问题 how can I add a border with a cornerRadius to an Image. I get a deprecation warning saying that i should use a RoundedRectange Shape, but i don't know how to use that exactly Beta 4: Image(uiImage: ...) .border(Color.black, width: 2, cornerRadius: 10) 回答1: SwiftUI 1.0 Using cornerRadius & overlay Modifiers Here is another way in which we can use a cornerRadius modifier (which clips the view) and then overlay a stroke with a color. VStack(spacing: 40) { Text("Image Border").font(.largeTitle)

问题 I am trying to use core data within my mac app with SwiftUI using Xcode 11. I have checked "Using Core Data" when creating the project. I also have created the entity (called VisitedCases) and used editor to create NSManagedObject Subclass files. I also have set the Codegen to Manual/none. Here is the code in the generated NSManagedObject files: VisitedCases+CoreDataProperties.swift extension VisitedCases { @nonobjc public class func fetchRequest() -> NSFetchRequest<VisitedCases> { return

问题 I have a framework target in Xcode 11.x to build a Dynamic framework with statically linking some 3rd party libraries using pod file. platform :ios, '9.0' #use_frameworks! target 'Framework' do pod 'DeviceUtil', '~> 2.0' end Now I have a requirement to build a Static framework, and for this I changed the "Mach-O' type to Static Library in 'Framework's' target build settings and able to create Static framework. The generated framework shows all architectures correctly (for architecture i386):