如何从 IOS 中的 HTML 标签中获取价值？答案

【问题标题】：How can I get value from HTML tag in IOS?如何从 IOS 中的 HTML 标签中获取价值？
【发布时间】：2016-06-17 15:13:22
【问题描述】：

我有来自网络服务的字符串，我需要从 HTML 标记中获取值。

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如何从HTML 字符串中获取Time、location 和details 的值

谢谢

【问题讨论】：

你读过这个文件吗。raywenderlich.com/14172/how-to-parse-html-on-ios
如果您不想使用上述解决方案，也可以使用 NSString 子字符串函数轻松完成。

标签： html ios objective-c

【解决方案1】：

您可以使用substringWithRange。在两个范围之间传递 HTML 标记，您将得到它们之间的字符串。

NSRange r1 = [s rangeOfString:@"<b>Time:</b>"];
NSRange r2 = [s rangeOfString:@"<br />"];
NSRange rSub = NSMakeRange(r1.location + r1.length, r2.location - r1.location - r1.length);
NSString *sub = [s substringWithRange:rSub];

【讨论】：

【解决方案2】：

你可以使用hpple！

如：

#import "TFHpple.h"

NSData  * data      = [NSData dataWithContentsOfFile:@"index.html"];

TFHpple * doc       = [[TFHpple alloc] initWithHTMLData:data];
NSArray * elements  = [doc search:@"//a[@class='sponsor']"];

TFHppleElement * element = [elements objectAtIndex:0];
[e text];                       // The text inside the HTML element (the content of the first text node)
[e tagName];                    // "a"
[e attributes];                 // NSDictionary of href, class, id, etc.
[e objectForKey:@"href"];       // Easy access to single attribute
[e firstChildWithTagName:@"b"]; // The first "b" child node

【讨论】：