NSUserDefaults 初始设置 [英] NSUserDefaults intitial setup

问题描述

我在 NSUserDefaults 中保存了一些用户设置.如果用户没有修改这些设置，我希望应用程序使用预设.

I'm saving a few user settings in NSUserDefaults. If these settings have not been modified by the user, I'd like the app to use presets.

我应该如何设置，以便应用程序首先检查设置是否已被修改，如果没有，则设置预设?

How should I set this up so the app first checks if settings have been modified and if not, sets presets?

检查是否 [[NSUserDefaults standardDefaults]objectForKey: @"setting1"] == nil ?如果不是，则设置预设?

Checking if [[NSUserDefaults standardDefaults]objectForKey: @"setting1"] == nil ? Then setting a preset if it is not?

推荐答案

[[NSUserDefaults standardUserDefaults] registerDefaults:dictionary];

https://developer.apple.com/library/mac/#documentation/Cocoa/Reference/Foundation/Classes/NSUserDefaults_Class/Reference/Reference.html#//apple_ref/doc/uid/20000318-CIHDDCDB

从您的 applicationDidFinishLaunchingWithOptions: 方法调用该方法，该方法设置您可能需要的任何默认值.

Call that from your applicationDidFinishLaunchingWithOptions: method that sets up whatever defaults you may need.

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