尝试使用数组创建随机图像生成器

Question

我是 xcode 和 swiftui 的新手，我正在尝试使用我在内容视图中创建的一些花卉图像数组来创建一个随机图像生成器。我希望它看起来像你点击一个按钮，随机弹出一朵花。我不介意图像是否重复。提前致谢！这是我目前所拥有的：

[import SwiftUI

struct ContentView: View {

    var flowers = ["carnation", "daffodil", "iris", "lily", "orchid", "peony", "poppy", "rose", "sunflower", "tulip"]


    var body: some View {
        Text("sunflower")
    }
}

struct ContentView_Previews: PreviewProvider {
    static var previews: some View {
        ContentView()
    }
}


]

Answer 1

您可以在 String Array 上使用 randomElement，但我的建议是将数组转换为枚举。

struct ContentView: View {
  private enum Flower: String, CaseIterable {
    case carnation
    case daffodil
    case iris
    case lily
    case orchid
    case peony
    case poppy
    case rose
    case sunflower
    case tulip

    static var random: Flower {
      allCases.randomElement()!
    }
  }

  @State private var flower: Flower = .random

  var body: some View {
    Button(
      action: { self.flower = .random }
    ) {
      Image(flower.rawValue).renderingMode(.original)
    }
  }
}

struct ContentView: View {
  private static let flowerNames = [
    "carnation",
    "daffodil",
    "iris",
    "lily",
    "orchid",
    "peony",
    "poppy",
    "rose",
    "sunflower",
    "tulip"
  ]

  private static var randomFlowerName: String {
    flowerNames.randomElement()!
  }

  @State private var flowerName = randomFlowerName

  var body: some View {
    Button(
      action: { self.flowerName = Self.randomFlowerName }
    ) {
      Image(flowerName).renderingMode(.original)
    }
  }
}

尝试使用数组创建随机图像生成器

Trying to create a random image generator using an array

geocoding