xcode 存储 iPad/iPhone 应用程序数据的最佳方式
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/3491631/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
Best Ways to Store iPad/iPhone Application Data
提问by
I'm developing an iPad application and I'm not sure what's the best way to store application data. So far I've been using a .plist that stores hundreds of strings for a puzzle game and that works great, but if my app is to be any good, it's going to have to store tens of thousands of strings (representing pre-made puzzles).
我正在开发 iPad 应用程序，但不确定存储应用程序数据的最佳方式是什么。到目前为止，我一直在使用一个 .plist 来存储数百个用于拼图游戏的字符串并且效果很好，但是如果我的应用程序要好用，它将不得不存储数万个字符串（代表预制拼图）。
I've read that it's a bad idea to use .plist for large files, so what is the best way to store lots of information (read only) for an iPhone/iPad app? [Can you also point me to a solid tutorial on how to store it? ]
我已经读到将 .plist 用于大文件是一个坏主意，那么为 iPhone/iPad 应用程序存储大量信息（只读）的最佳方法是什么？[你能不能给我一个关于如何存储它的可靠教程？]
[I don't need to load all the strings into my application at any one given time, only around 50 per each round of the game].
[我不需要在任何给定时间将所有字符串加载到我的应用程序中，每轮游戏只需大约 50 个]。
回答by Grimless
You have a few options off the top of my head: You can use a database or you can create an archive. Personally, I would use the archive approach, but a database in sqlite or CoreData will work just as well (and may even be faster).
我脑子里有几个选项：您可以使用数据库，也可以创建存档。就我个人而言，我会使用归档方法，但 SQLite 或 CoreData 中的数据库也能正常工作（甚至可能更快）。
To create an archive, your classes need to subscribe to the NSCoding protocol, implementing the two methods - (id) initWithCoder:(NSKeyedUnarchiver*)aDecoderand - (void) encodeWithCoder:(NSKeyedArchiver*)aCoder. These are used by calling [aCoder encodeObject: myString forKey: @"theKeyIWantToUse"];and [self setMyString: [aDecoder decodeObjectForKey: @"theKeyIWantToUse"]];
要创建存档，您的类需要订阅 NSCoding 协议，实现两个方法- (id) initWithCoder:(NSKeyedUnarchiver*)aDecoder和- (void) encodeWithCoder:(NSKeyedArchiver*)aCoder. 这些由调用[aCoder encodeObject: myString forKey: @"theKeyIWantToUse"];和使用[self setMyString: [aDecoder decodeObjectForKey: @"theKeyIWantToUse"]];
Reading and writing data from an archive is very easy and relatively fast thanks to Apple's polish on the coding system.
由于 Apple 对编码系统的完善，从存档中读取和写入数据非常容易且相对较快。
Again, alternatively, you can build a CoreData backend that will manage object storage and retrieval in a database. This abstracts where data is stored and how it is accessed, which is very useful. Hope that helps!
同样，或者，您可以构建一个 CoreData 后端来管理数据库中的对象存储和检索。这抽象了数据的存储位置和访问方式，这非常有用。希望有帮助！
回答by vakio
You should use an sqlite database. Here is one of many tutorials:
您应该使用 sqlite 数据库。这是许多教程之一：
