在两个iOS应用程序之间传递自定义对象 [英] Passing custom objects between two iOS Apps

问题描述

我需要一些帮助。我的帐户下有两个应用程序。

I need some help on something. I have two apps under my account.

我需要将自定义对象从App A传递到App B.如何使用应用程序组执行此操作？

I need to pass a custom object from App A to App B. How can I do this using app groups ?

我看到使用URL方案是一种古老的方式。

I saw that using URL schemes is a old a way of doing it.

那么两个应用程序传递数据的最新方法是什么？

So what is the newest way of passing data two apps ?

推荐答案

在您的应用程序中（保存对象）

1. 在功能下，单击+到添加应用程序组
   

1. Under capabilities, Click "+" to add an App Group

在对象类中，您需要扩展所需的类分享到 NSObject 和 NSCoding

In your Object Class, you need to extend the class you want to share to NSObject and NSCoding

class Person : NSObject, NSCoding {
    var nom: String
    var prenom: String

    required init(name: String, prenom: String) {
       self.nom = name
       self.prenom = prenom
    }

    required init(coder decoder: NSCoder) {
        self.nom = decoder.decodeObject(forKey: "name") as? String ?? ""
        self.prenom = decoder.decodeObject(forKey: "prenom") as? String ?? ""
    }
    func encode(with coder: NSCoder) {
        coder.encode(nom, forKey: "nom")
        coder.encode(prenom, forKey: "prenom")
    }
}

从应用A保存数据

Save Data from your App A

override func viewDidLoad() {
    super.viewDidLoad()
    // Do any additional setup after loading the view, typically from a nib.
    let person = Person(name: "Ugo", prenom: "Marinelli")
    saveData(person: person)
}

func saveData(person : Person){
    //Map Class to recognize it
    NSKeyedArchiver.setClassName("Person", for: Person.self)

    //Encode the object
    let personEncoded = NSKeyedArchiver.archivedData(withRootObject: person)

    //Push the object to the App Group
    UserDefaults(suiteName: "group.tag.testAppGroup")!.set(personEncoded, forKey: "FirstLaunch")
}

在您的应用程序B中（获取对象）

1. 添加与App A相同的应用程序组（见1.1）

1. Add the same app group as the App A (see 1.1)

在View控制器中你想获得App A对象：

In the View controller you want to get the App A object :

override func viewDidLoad() {
    super.viewDidLoad()
    // Do any additional setup after loading the view, typically from a nib.

    //Class Mapping
    NSKeyedUnarchiver.setClass(Person.self, forClassName: "Person")

    //Get The encoded data from App Group
    let personEncoded  = UserDefaults(suiteName: "group.tag.testAppGroup")!.object(forKey: "FirstLaunch") as! NSData

    //Decode to get our Person object
    let personDecoded = NSKeyedUnarchiver.unarchiveObject(with: personEncoded as Data) as? Person

    print(personDecoded?.prenom)
}

请注意，您需要在两个文件中实现Person类，最佳做法是使用您的模型创建自己的框架

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