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sinaar's questions

Martin Hope
sinaar
Asked: 2024-11-16 02:33:49 +0800 CST
  • 5

我的/Library/Developer/CoreSimulator文件夹有 27 GB，其中/Library/Developer/CoreSimulator/Images占用了 15 GB，/Library/Developer/CoreSimulator/Profiles占用了 12 GB。我可以清除这些文件夹中的任何内容而不破坏任何内容吗？

请记住，这是一个不同的文件夹，~/Library/Developer/CoreSimulator大小仅有 3 GB。

xcode
Martin Hope
sinaar
Asked: 2024-10-20 22:47:13 +0800 CST
  • 5

我正在制作一个 TextField，在输入时，它有一个浮动标签，该标签会切入 TextField 的边框。对于不同的占位符，修剪功能无法按预期工作，例如，如果修剪功能对占位符“名称”正常工作，则对占位符“输入名称”不起作用。此外，第一次在字段中输入时，FocusState 会更改为 false。为什么会发生这种情况？有人可以帮忙修复这些问题吗？

视图代码：

struct RoundedTextField: View {
    @Binding var text: String
    let placeholder: String
    
    init(_ placeholder: String, text: Binding<String>) {
        self.placeholder = placeholder
        self._text = text
    }
    
    @State private var width: CGFloat = .zero
    @State private var labelWidth: CGFloat = .zero
    
    @FocusState private var isFieldFocused
    
    var body: some View {
        ZStack(alignment: .leading) {
            Text(placeholder)
                .foregroundStyle(text.isEmpty ? Color(.placeholderText) : .caribe)
                .padding(.horizontal, 25)
                .offset(y: text.isEmpty ? 0 : -37)
                .scaleEffect(text.isEmpty ? 1 : 0.8, anchor: .leading)
                .overlay {
                    GeometryReader { proxy in
                        Color.clear
                            .onChange(of: text) { _, _ in
                                labelWidth = proxy.size.width
                            }
                    }
                }
            
            TextField("", text: $text)
                .textFieldStyle(RoundedTextFieldStyle(isFieldFocused: isFieldFocused, textIsEmpty: text.isEmpty, width: width, labelWidth: labelWidth))
                .focused($isFieldFocused)
                .overlay {
                    GeometryReader { proxy in
                        Color.clear
                            .onChange(of: text) { _, _ in
                                width = proxy.size.width * (text.isEmpty ? 1 : 0.8)
                            }
                    }
                }
        }
        .animation(.default, value: text)
        .padding()
    }
}

struct RoundedTextFieldStyle: TextFieldStyle {
    var isFieldFocused: Bool
    var textIsEmpty: Bool
    var width: CGFloat
    var labelWidth: CGFloat
    func _body(configuration: TextField<Self._Label>) -> some View {
        configuration
            .padding(.vertical)
            .padding(.horizontal, 25)
            .frame(height: 60)
            .if(textIsEmpty) { view in
                view.background {
                    RoundedRectangle(cornerRadius: 10)
                            .stroke(isFieldFocused ? .caribe : .gray, lineWidth: isFieldFocused ? 2 : 1)
                }
            }
            .if(!textIsEmpty) { view in
                view.background {
                    ZStack {
                        RoundedRectangle(cornerRadius: 10)
                            .trim(from: 0, to: 0.55)
                            .stroke(isFieldFocused ? .caribe : .gray, lineWidth: isFieldFocused ? 2 : 1)
                        
                        RoundedRectangle(cornerRadius: 10)
                            .trim(from: 0.565 + 0.2 * (labelWidth / width), to: 1)
                            .stroke(isFieldFocused ? .caribe : .gray, lineWidth: isFieldFocused ? 2 : 1)
                    }
                }
            }
    }
}

条件修饰符：

extension View {
    @ViewBuilder
    func `if`<Content: View>(_ condition: Bool, transform: (Self)-> Content) -> some View {
        if condition {
            transform(self)
        } else {
            self
        }
    }
}
swift