实战需求

SwiftUI 经典组件之表单验证Form组件 干净简单可定制（教程含源码）

本文价值与收获

看完本文后，您将能够作出下面的界面

基础知识

• 使用方法

import FormValidator

// 2
class FormInfo: ObservableObject {
  @Published var firstName: String = ""
  // 3
  lazy var form = {
    FormValidation(validationType: .immediate)
  }()
  // 4
  lazy var firstNameValidation: ValidationContainer = {
    $firstName.nonEmptyValidator(form: form, errorMessage: "First name is not valid")
  }()
}

struct ContentView: View {
  // 5
  @ObservedObject var formInfo = FormInfo()

  var body: some View {
    TextField("First Name", text: $formInfo.firstName)
            .validation(formInfo.firstNameValidation) // 6
  }
}

1. 导入表单