macOS 上的 SwiftUI 选择器答案

【问题标题】：SwiftUI picker on macOSmacOS 上的 SwiftUI 选择器
【发布时间】：2021-01-12 14:56:42
【问题描述】：

我尝试用我的个人知识来学习 SwiftUI。然后我在我的 Mac 上进行测试，但我的第一感觉是 SwiftUI 比 macOS 更面向 iOS。我说的对吗？

现在是技术问题我有一个数组：

var years = ["1900", "1901", "1902", "1903", "1904", "1905", "1906", "1907", "1910",
                "1911", "1912", "1913", "1914", "1915", "1916", "1917", "1918", "1919", "1920",
                "1921", "1922", "1923", "1924", "1925", "1926", "1927", "1928", "1929", "1930",
                "1931", "1932", "1933", "1934", "1935", "1936", "1937", "1938", "1939", "1940",
                "1941", "1942", "1943", "1944", "1945", "1946", "1947", "1948", "1949", "1950"]

我想将这些值放入 SwiftUI 选择器中。

似乎不可能通过循环将这些值放入 Picker 中

 Picker (selection: $toDate, label: Text ("From Date : "), content: {
                    for y in years {
                        
                    }
                })

总是报错：

包含控制流语句的闭包不能与函数一起使用构建器'ViewBuilder'

【问题讨论】：

标签： macos swiftui

【解决方案1】：

检查一下：

var years = ["1900", "1901", "1902", "1903", "1904", "1905", "1906", "1907", "1910",
                "1911", "1912", "1913", "1914", "1915", "1916", "1917", "1918", "1919", "1920",
                "1921", "1922", "1923", "1924", "1925", "1926", "1927", "1928", "1929", "1930",
                "1931", "1932", "1933", "1934", "1935", "1936", "1937", "1938", "1939", "1940",
                "1941", "1942", "1943", "1944", "1945", "1946", "1947", "1948", "1949", "1950"]

@State var toDate =  "1900"

var body: some View {
    Picker("From date:", selection: $toDate) {
        ForEach(years, id:\.self ) { i in
            Text(i)
        }
    }
}

【讨论】：