小型数据库的方法-iOS [英] Approach for small database - iOS

问题描述

我正在构建一个需要我存储很多东西的应用程序.

i am building an app that requires me to store a number of things.

我有一个由4到5个BOOL变量组成的数据对象，可能有800-1000个我需要保留的对象.

I have a data object consisting of 4 to 5 BOOL variables, there could be 800 - 1000 such objects which i will need to persist.

由于NSUserdefaults显然不是一种选择，我很困惑应该如何编程，应该使用sql数据库还是Core数据.

Am confused how should i program this, should i go for an sql database or Core data, since NSUserdefaults is not an option obviously.

推荐答案

您可以按照@adobels的建议轻松地将它们存储在plist中.您的类会将BOOL存储在NSNumber中，而您的类实现了NSCoding:

You can easily store them in a plist as @adobels suggested. Your Class would store the BOOLs in a NSNumber and your class implements NSCoding:

- (void)encodeWithCoder:(NSCoder *)coder {
        [coder encodeObject:member1ToStore forKey:@"yourFirstBoolKey"];
}
- (id)initWithCoder:(NSCoder *)coder ...

如果您的类的所有实例都在NSArray(或类似的Cocoa集合)中，则只需将其归档并取消归档即可，例如

If all the instances of your class are in an NSArray (or similar Cocoa Collection) you then simply archive and unarchive to a file like

[NSKeyedArchiver archiveRootObject:yourCollectionOfClasses toFile:archivePath]
[NSKeyedUnarchiver unarchiveObjectWithFile:[[self archiveURL] path]];

请参见在苹果开发人员处的文档和<一个href ="https://stackoverflow.com/questions/8727508/ios-persistent-storage-strategy?answertab=active#tab-top">这个好答案

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