小编Clé*_*gip的帖子

当我使用我的应用程序时，有时会出现一个错误，它似乎是随机的（或者我没有弄清楚确切的时间......），然后我的所有列表都是空的（就像 CoreData 中没有任何内容一样）。但是如果我关闭我的应用程序并重新打开它，列表就会出现没有任何问题......

我搜索了关于这个问题的堆栈溢出，但对我来说什么都不清楚......

错误 ：

CoreData: warning:       'CDDetail' (0x2815e8790) from NSManagedObjectModel (0x2841bb8e0) claims 'CDDetail'.
2020-11-13 19:16:48.329773+0100 OrientationEPS[33705:3479327] [error] error: +[CDDetail entity] Failed to find a unique match for an NSEntityDescription to a managed object subclass
CoreData: error: +[CDDetail entity] Failed to find a unique match for an NSEntityDescription to a managed object subclass

加载持久容器：

class OriEPS {

lazy var persistentContainer: NSPersistentContainer = {
        let container = NSPersistentContainer(name: "OrientationEPS")
        container.loadPersistentStores { description, error in
            if let error = error { …

我试图让我的用户在 ActionSheet 中选择拍照或从库中选择

在 Iphone 上运行良好，但在 iPad 上不行

在 Ipad 上：ActionSheet 位于屏幕顶部，并且不可读...

我在 StackOverflow 上读到的有关此问题的所有问题都在谈论崩溃（这不是我的情况）或早于 SwiftUI

我的代码：

     struct AjoutView: View {
    @State private var image : Image?
    @State private var shouldPresentImagePicker = false
    @State private var shouldPresentActionScheet = false
    @State private var shouldPresentCamera = false
    
    var body: some View {
     VStack{
      ...
     }
        .sheet(isPresented: $shouldPresentImagePicker, onDismiss: loadImage) {
            SUImagePickerView(sourceType: self.shouldPresentCamera ? .camera : .photoLibrary, image: self.$image, isPresented: self.$shouldPresentImagePicker, dispId: disp.id)
                }
        .actionSheet(isPresented: $shouldPresentActionScheet) { () -> ActionSheet in
                    ActionSheet(title: Text("Ajouter …

当我打开带有文本字段的工作表，并将焦点放在文本字段上时，会出现键盘并显示此消息：

 2021-02-06 22:29:35.817858+0100 OrientationEPS[4026:269878] [LayoutConstraints] Unable to simultaneously satisfy constraints.
Probably at least one of the constraints in the following list is one you don't want. 
Try this: 
    (1) look at each constraint and try to figure out which you don't expect; 
    (2) find the code that added the unwanted constraint or constraints and fix it. 
(Note: If you're seeing NSAutoresizingMaskLayoutConstraints that you don't understand, refer to the documentation for the UIView property translatesAutoresizingMaskIntoConstraints) 
(

    "<NSAutoresizingMaskLayoutConstraint:0x6000030b3250 h=--& v=--& _UIButtonBarButton:0x7fea6492cf40.height == …

我正在尝试在画布上使用 ToolPicker，但这里有：

我想要（按钮 + 和文本、形状...）：

如何将文本、形状添加到画布上的 ToolPicker 中？

struct MyCanvas: UIViewRepresentable {
        var canvasView: PKCanvasView
        let picker = PKToolPicker.init()
        
        func makeUIView(context: Context) -> PKCanvasView {
            self.canvasView.tool = PKInkingTool(.pen, color: .black, width: 15)
            self.canvasView.isOpaque = false
            self.canvasView.backgroundColor = UIColor.clear
            self.canvasView.becomeFirstResponder()
    
           let imageView = UIImageView(image: UIImage(named: "badmintoncourt"))
            let subView = self.canvasView.subviews[0]
                subView.addSubview(imageView)
                subView.sendSubviewToBack(imageView)
            return canvasView
        }
        
        func updateUIView(_ uiView: PKCanvasView, context: Context) {
            picker.addObserver(canvasView)
            picker.setVisible(true, forFirstResponder: uiView)
            DispatchQueue.main.async {
                uiView.becomeFirstResponder()
            }
        }
    }

如何将项目设置为禁用（不可点击）但在我的 tabView 中可见？

TabView(selection: $selectedTab) {
            Settings()
                .tabItem {
                    Image(systemName: "gearshape.fill")
                    Text("Settings")
                }.tag(1)
                 .disabled(true) // Not Working