在IOS中的应用程序之间共享数据 [英] Sharing data in between apps in IOS

问题描述

我有一项任务是在同一设备中的应用之间共享数据。可能两个应用都可以在同一设备上使用共享数据库。如何在IOS中的两个应用程序之间共享数据。任何人都以任何方式做到了。
请告诉我。谢谢

I have a task to share data between apps in the same device. May be both apps can use a shared database on same device. How to share Data between two apps in IOS. Anybody have done it in any way. Please let me know. Thanks

推荐答案

您可以在具有相同组容器ID的两个应用程序的应用程序项目功能选项卡上打开应用程序组。 group.com.yourCompanyID.sharedDefaults

You can turn on App group on your App Project capabilities tab on both of your apps with the same group container ID. "group.com.yourCompanyID.sharedDefaults"

然后，您可以使用以下网址从您的应用访问同一文件夹：

Then you can access the same folder from your apps using the following url:

let sharedContainerURL = FileManager.default.containerURL(forSecurityApplicationGroupIdentifier: "group.com.yourCompanyID.sharedDefaults")!

因此，如果您想从两个不同的应用程序共享交换机状态，您应该按照以下方式执行：

So if you would like to share a switch state from two different apps you should do it as follow:

import UIKit

class ViewController: UIViewController {
    @IBOutlet weak var sharedSwitch: UISwitch!
    let switchURL = FileManager.default.containerURL(forSecurityApplicationGroupIdentifier: "group.com.yourCompanyID.sharedDefaults")!
        .appendingPathComponent("switchState.plist")
    override func viewDidLoad() {
        super.viewDidLoad()
        print(switchURL.path)
        NotificationCenter.default.addObserver(self, selector: #selector(updateSwitch), name: .UIApplicationDidBecomeActive, object: nil)
    }
    func updateSwitch(_ notofication: Notification) {
        sharedSwitch.isOn = NSKeyedUnarchiver.unarchiveObject(withFile: switchURL.path) as? Bool == true
    }
    @IBAction func switched(_ sender: UISwitch) {
        let success = NSKeyedArchiver.archiveRootObject(sender.isOn, toFile: switchURL.path)
        print(success)
    }
}

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