iPhone - 没有setURL保存URL：forKey：和NSURL [英] iPhone - Save URL without setURL:forKey: and NSURL

问题描述

无论如何使用没有setURL的NSUserDefaults保存URL：forKey：仅适用于iOS 4.0及更高版本？

Is there anyway to save a URL with NSUserDefaults without setURL:forKey: that is only available to iOS 4.0 and later?

我在本地使用fileURLWithPath加载HTML文件，它从一个介绍页面开始，用户可以点击进入任何内容。目前，每次用户重新开始时，都会将默认值加载到intro.htm。我希望能够将他们当前的页面保存到viewdiddissapear上的NSUserDefaults并在下次重新加载它，但除了setURL之外找不到任何解决方案：forKey：。那里的任何人都知道解决方案吗？

I am loading HTML files locally with fileURLWithPath, and it starts at an intro page and the user can click through to whatever. For now, everytime a user starts over it loads back default to intro.htm. I would like to be able to save their current page to NSUserDefaults on viewdiddissapear and reload it next time, but can't find any solutions besides setURL:forKey:. Anyone out there know a solution?

推荐答案

您可以将URL转换为字符串：

You can turn the URL into a string:

[[NSUserDefaults standardUserDefaults]
 setObject:[url absoluteString] forKey:@"url"];

反之亦然：

NSURL *url = [NSURL URLWithString:[[NSUserDefaults standardUserDefaults]
                                   objectForKey:@"url"]];

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