无法使用应用程序组访问NSUserDefaults [英] Cannot access NSUserDefaults using app groups one to another

问题描述

我正在开发一个应用程序和一个小部件，小部件需要从app获取数据。我已经使用以下代码在NSUserDefaults上进行读写。我还使用 $（PRODUCT_BUNDLE_IDENTIFIER）.widget 表示小部件， $（PRODUCT_BUNDLE_IDENTIFIER）指的是这个帖子。但是widget无法从app或NSUserDefaults获取数据。我怎样才能使它工作？

I'm working on an app and a widget that the widget needs to get data from app. I've used the following codes to read and write on NSUserDefaults. And also I used $(PRODUCT_BUNDLE_IDENTIFIER).widget for widget and $(PRODUCT_BUNDLE_IDENTIFIER) referring to this post. But widget cannot get the data from app or NSUserDefaults. How can I make it work?

func addTask(name: String?){
        let key = "keyString"
        tasks.append(name!)
        let defaults = NSUserDefaults(suiteName: "group.Mins")
        defaults?.setObject(tasks, forKey: key)
        defaults?.synchronize()

    }

///////

let defaults = NSUserDefaults(suiteName: "group.Mins")
    let key = "keyString"

    if let testArray : AnyObject = defaults?.objectForKey(key) {
        let readArray : [String] = testArray as! [String]
        timeTable = readArray
        timeTable = timeTable.sort(<)
        print("GOT IT")
        print("timetable: \(timeTable)")
    }

推荐答案

阅读并保存您需要以下相同的NSUserDefaults集合：

To read and save from the same set of NSUserDefaults you need to the the following:

1. 在主应用程序中，在项目导航器中选择您的项目。


2. 选择主应用程序目标并选择功能选项卡。


3. 启用应用程序组（这将与开发人员门户通信，因为它生成一组权利，以及相关的App Id等。）


4. 创建一个新容器。根据帮助，它必须以group。开头，所以给它命名为group.myapp.test。


5. 选择Today Extension目标并重复此切换过程在应用程序组。不要创建新组，而是选择这个新创建的组来表示今日延期是该组的成员。

1. In your main app, select your project in the project navigator.
2. Select your main app target and choose the capabilities tab.
3. Switch on App Groups (this will communicate with the developer portal, as it is generating a set of entitlements, and relevant App Id and so forth).
4. Create a new container. According to the help, it must start with "group.", so give it a name like "group.myapp.test".
5. Select your Today Extension target and repeat this process of switching on app groups. Don’t create a new one, rather select this newly created group to signify that the Today Extension is a member of the group.

写入您的NSUserDefaults：

Write to your NSUserDefaults:

// In this example I´m setting FirstLaunch value to true 
NSUserDefaults(suiteName: "group.myapp.test")!.setBool(true, forKey: "FirstLaunch")

Read来自NSUserDefaults：

Read from NSUserDefaults:

// Getting the value from FirstLaunch
let firstLaunch = NSUserDefaults(suiteName: "group.myapp.test")!.boolForKey("FirstLaunch")

if !firstLaunch  {
   ...
}

Swift 3.0：

写

UserDefaults(suiteName: "group.myapp.test")!.set(true, forKey: "FirstLaunch")

阅读

UserDefaults(suiteName: "group.myapp.test")!.bool(forKey: "FirstLaunch")

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