有关iOS应用开发的建议. ApplicationDidEnterBackground

问题描述

我在玩弄一些快速游戏，我正在尝试制作一个简单的游戏.我得到了一些在比赛中会发生变化的变量.在applicationDidEnterBackground中保存这些变量以及在appDelegate中保存所有其他功能的最佳实践是什么.

I´m having some fun with swift and I´m trying to make a simple game. I got a few variables that changes during the game. What´s the best practice for saving those variables if applicationDidEnterBackground and for all those other functions in appDelegate.

我相信是将它们存储在核心数据中，并在应用再次启动时加载它们.

What I believe is to store them in core data and load them when app starts up again.

任何对此主题有经验的人吗?

Anyone with some experience around this theme?

推荐答案

如果您只想存储和管理一些变量，则可以使用NSUserDefaults.

If its just a few variables you want to store and manage you could use NSUserDefaults.

    // Create defaults
    let defaults = NSUserDefaults.standardUserDefaults()

    // Set an int for highScoreKey in our defaults
    defaults.setInteger(10, forKey: "highScoreKey")

    // Sync/Save the defaults we've changed
    defaults.synchronize()

    // Then to retrieve our highScoreKey default we've saved
    // We create an int to store the value that is in our default
    var highScoreInt = defaults.integerForKey("highScoreKey")

    println(highScoreInt)
    // Prints 10

我会在设置好需要的值后立即设置并保存这些值，而不是在applicationDidEnterBackground中.

I'd set and save these values as soon as I have the values I need rather than in applicationDidEnterBackground though.

NSUserDefaults类参考

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