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:
- 创建您的sharedDefaults结构
- 声明您的全局数据变量
- 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
- 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)
}
- 保存内容:
//Update both data and current data
myData.append("ok")
currentData.append("ok")
sharedUserdefaults?.set(currentData, forKey: SharedDefault.Keys.Key)
- 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!
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