快速保存键和值对

I need a way to save key and value pairs in swift for my application. I am new to IOS programming, but I know Android and I am looking for something like shared preferences in android, but for swift. By "save," I mean that when the user quits out of the application, the key and value pairs are saved in the local data.

我需要一种方法来保存swift中的键和值对我的应用程序。我是IOS编程的新手，但我知道Android，我正在寻找像android中的共享首选项，但对于swift。通过“保存”，我的意思是当用户退出应用程序时，键和值对将保存在本地数据中。

2 个解决方案

#1

Swift 3.0

Swift 3.0

Saving Data:

保存数据：

   let userDefaults = UserDefaults.standard
   userDefaults.set(yourKey, forKey: "yourKey")
   userDefaults.synchronize()

Reading Data:

阅读数据：

 if let yourVariable: AnyObject = UserDefaults.standard.object(forKey: "yourKey") as AnyObject? { }

#2

What you are looking for is called "Userdefaults" - you can use them like this:

您正在寻找的是“Userdefaults” - 您可以像这样使用它们：

Saving Data:

保存数据：

let userDefaults = NSUserDefaults.standardUserDefaults()
userDefaults.setObject(variable, forKey: "yourKey")
userDefaults.synchronize()

Reading Data:

阅读数据：

if let yourVariable: AnyObject = NSUserDefaults.standardUserDefaults().objectForKey("yourKey") {
....

Here you find more information:

在这里您可以找到更多信息

https://developer.apple.com/library/prerelease/ios/documentation/Cocoa/Reference/Foundation/Classes/NSUserDefaults_Class/index.html

https://developer.apple.com/library/prerelease/ios/documentation/Cocoa/Reference/Foundation/Classes/NSUserDefaults_Class/index.html