如何将uiviewcontroller数据传递给swiftui小部件类 [英] How to pass uiviewcontroller data to swiftui widget class

问题描述

如何将uiviewcontroller数据传递给swiftui小部件类，我无法使用应用程序组来完成它，现在也写了，我正在使用userdefaults发送但无法做到

How to pass uiviewcontroller data to swiftui widget class i am unable to do it with app groups also write now i am sending it with userdefaults but unable to do it

if let userDefaults = UserDefaults(suiteName: "group.com.soup.ios.app") {
            UserDefaults.standard.set(self.dat ?? "", forKey: "date")
            UserDefaults.standard.set(self.textData.text ?? "", forKey: "text")
        }


if let userDefaults = UserDefaults(suiteName: "group.com.soup.ios.app") {

            let text = UserDefaults.standard.object(forKey: "text") as? String
            
            Text(text ?? "Add Data").lineLimit(2)
                .truncationMode(.middle)
            
            
            }

推荐答案

此解决方案很快出现了5.

要在目标之间传递数据，您需要:

In order to pass data between targets, you need to:

1. 创建您的sharedDefaults结构
2. 声明您的全局数据变量
3. 使用支持变量从target \ viewcontroller更改变量的数据.

首先创建一个新的.swift文件.继续使用inspector> file>目标成员资格，然后选择要通信的目标.

First of all create a new .swift file. Go on inspector>file>target membership and select the targets you want to comunicate.

SharedDefaults帮助器

//This goes in your new swift file
let sharedUserdefaults = UserDefaults(suiteName: SharedDefault.suitName)

struct SharedDefault {
    static let suitName = "group.com.soup.ios.app"
    
    struct Keys{
        static let Key = "text"
        
        
    }
}

全局数据变量

//This goes in your new swift file
//This is an array of strings change the type by changing what's after "data:"
 var data: [String] {
    get {
     return sharedUserdefaults?.stringArray(forKey: Key) as? [String] ?? [String]()
    } set {
        
    }
}

因此，上面是一个get/set变量，该变量存储和接收您从小部件和父应用程序保存/获取的数据.

So what's above is a get/set variable which stores and receives the data you save/get from your widget and your parent app.

实际保存/检索内容
现在要在您的应用程序或目标中使用这些东西，您必须

Actually saving/retrieving stuff
Now to use this stuff either in your app or target, you have to

1. 声明支持变量:

    var myData: [String] = [] //This is not required but if you need to display contents in real time I'd suggest you use this. 

    var currentData = data //Helper variable to pass data to the sharedVariable

 override func viewDidLoad() {
        super.viewDidLoad()
    myData.append(contentsOf: data)
}

1. 保存内容:

//Update both data and current data
  myData.append("ok")
  currentData.append("ok")
  sharedUserdefaults?.set(currentData, forKey: SharedDefault.Keys.Key)
            

1. 删除内容:

//Update both data and current data
  mydata.remove(at: 0)
  currentData.remove(at: 0)
  sharedUserdefaults?.set(currentData, forKey: SharedDefault.Keys.Key)

就是这样！

这篇关于如何将uiviewcontroller数据传递给swiftui小部件类的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！