如何保存书签数据？ [英] How To Save Data For Bookmarks?

问题描述

我为我的应用程式建立了一个非常简单的书签选单。我只需要保存每个对象3个字符串。

I'm creating a very simple bookmarks menu for my app. I just need to save 3 strings for each object.

我正在考虑使用核心数据，但我不想因为各种原因而与核心数据库连接。因此，我还有什么其他简单的选择？ NSUserDefaults或.plist？

I was thinking of using core data but I don't want this to be connected with my core database for various reasons. Therefore what other easy options do I have? NSUserDefaults or .plist?

我只需要为每个对象保存3个字符串，然后将它们加载到一个表视图中以供查看。

I just need to save the 3 strings for each object then load them into a table view to be viewed.

推荐答案

我建议NSUserDefaults - 当然更容易。我倾向于只使用plist文件作为静态数据，我想要作为开发人员可编辑，但从应用程序想要它是只读的（如嵌入式地图图像上的对象的坐标）。

I'd recommend NSUserDefaults - is certainly easier. I tend to only use plist files for static data that I want to be editable as the developer, but from the application want it to be read-only (such as coordinates for objects on an embedded map image).

在你的描述中，你可能想要存储一个包含NSDictionary的NSArray。

From your description, you would probably want to store an NSArray containing NSDictionary.

// Get the user defaults object
NSUserDefaults *userDefaults = [NSUserDefaults standardUserDefaults];


// Load your bookmarks (editable array)
NSMutableArray *bookmarks = [[NSMutableArray alloc]init];
NSArray *bookmarksLoaded = [userDefaults arrayForKey:@"bookmarks"];
if (bookmarksLoaded != nil) {
    [bookmarks initWithArray:bookmarksLoaded];
} else {
    [bookmarks init];
}

// Add a bookmark
NSMutableDictionary *bookmark = [NSMutableDictionary new];
[bookmark setValue:@"value" forKey:@"name"];
[bookmark setValue:@"value" forKey:@"description"];
[bookmark setValue:@"value" forKey:@"code"];
[bookmarks addObject:bookmark];

// Save your (updated) bookmarks
[userDefaults setObject:bookmarks forKey:@"bookmarks"];
[userDefaults synchronize];

// Memory cleanup
[bookmarks release];

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