iOS_带下划线的Label

1. 在Supporting Files下面,右键 New File, 选择 Other 里面的PCH File
2. 点击相应的TARGETS --->Build Setting ,搜索Prefix Header
3. 将Precompile Prefix Header 勾选为YES
4. 将左上角 项目的名字拷贝一下,  双击Prefix Header一栏, 填入:【项目的名字/Beyond.pch】

#import <Availability.h>

#ifndef __IPHONE_3_0
#warning "This project uses features only available in iOS SDK 3.0 and later."
#endif

#ifdef __OBJC__

#import <UIKit/UIKit.h>
#import <Foundation/Foundation.h>

#endif

导入了libxml2.dylib，但是却提示libxml/XXX.h file not found，那是因为路径无法找到这个libxml2.dylib框架

工程-->targets-->Build Settings，查找：“Header search paths”

在Header search paths 输入：${SDK_DIR}/usr/include/libxml2

【4】【将整个LinkLabel拖进项目中】

【5】【控制器里的使用示例代码】

#import "CXAHyperlinkLabel.h"#import "NSString+CXAHyperlinkParser.h"@interface BeyondCtrl (){CXAHyperlinkLabel *_label;}@end

- (void)viewDidLoad {[super viewDidLoad];_label = (CXAHyperlinkLabel *)self.lastView;NSArray *URLs;NSArray *URLRanges;NSAttributedString *as = [self attributedString:&URLs URLRanges:&URLRanges];//    _label = [[CXAHyperlinkLabel alloc] initWithFrame:CGRectZero];_label.numberOfLines = 0;_label.backgroundColor = [UIColor clearColor];_label.attributedText = as;[_label setURLs:URLs forRanges:URLRanges];_label.URLClickHandler = ^(CXAHyperlinkLabel *label, NSURL *URL, NSRange range, NSArray *textRects){[[[UIAlertView alloc] initWithTitle:@"URLClickHandler" message:[NSString stringWithFormat:NSLocalizedString(@"Click on the URL %@", nil), [URL absoluteString]] delegate:nil cancelButtonTitle:NSLocalizedString(@"Dismiss", nil) otherButtonTitles:nil] show];};_label.URLLongPressHandler = ^(CXAHyperlinkLabel *label, NSURL *URL, NSRange range, NSArray *textRects){[[[UIActionSheet alloc] initWithTitle:[NSString stringWithFormat:@"URLLongPressHandler for URL: %@", [URL absoluteString]] delegate:nil cancelButtonTitle:NSLocalizedString(@"Cancel", nil) destructiveButtonTitle:nil otherButtonTitles:nil] showInView:self.view];};}#pragma mark - privates- (NSAttributedString *)attributedString:(NSArray *__autoreleasing *)outURLsURLRanges:(NSArray *__autoreleasing *)outURLRanges{NSString *HTMLText = @"An inline link may display a modified version of the content; for instance, instead of an image, a <a href='/wiki/Thumbnail' title='Thumbnail'>thumbnail</a>, <a href='/wiki/Image_resolution' title='Image resolution'>low resolution</a> <a href='/wiki/Preview_(computing)' title='Preview (computing)'>preview</a>, <a href='/wiki/Cropping_(image)' title='Cropping (image)'>cropped</a> section, or <a href='/wiki/Magnification' title='Magnification'>magnified</a> section may be shown. The full content will then usually be available on demand, as is the case with <a href='/wiki/Desktop_publishing' title='Desktop publishing'>print publishing</a> software – e.g. with an external link. This allows for smaller file sizes and quicker response to changes when the full linked content is not needed, as is the case when rearranging a <a href='/wiki/Page_layout' title='Page layout'>page layout</a>.";NSArray *URLs;NSArray *URLRanges;UIColor *color = [UIColor blackColor];UIFont *font = [UIFont fontWithName:@"Baskerville" size:19.];NSMutableParagraphStyle *mps = [[NSMutableParagraphStyle alloc] init];mps.lineSpacing = ceilf(font.pointSize * .5);NSShadow *shadow = [[NSShadow alloc] init];shadow.shadowColor = [UIColor whiteColor];shadow.shadowOffset = CGSizeMake(0, 1);NSString *str = [NSString stringWithHTMLText:HTMLText baseURL:[NSURL URLWithString:@"http://en.wikipedia.org/"] URLs:&URLs URLRanges:&URLRanges];NSMutableAttributedString *mas = [[NSMutableAttributedString alloc] initWithString:str attributes:@{NSForegroundColorAttributeName : color,NSFontAttributeName            : font,NSParagraphStyleAttributeName  : mps,NSShadowAttributeName          : shadow,}];[URLRanges enumerateObjectsUsingBlock:^(id obj, NSUInteger idx, BOOL *stop){[mas addAttributes:@{NSForegroundColorAttributeName : [UIColor blueColor],NSUnderlineStyleAttributeName  : @(NSUnderlineStyleSingle)} range:[obj rangeValue]];}];*outURLs = URLs;*outURLRanges = URLRanges;return [mas copy];}

【6】【设置Label的UserInteraction为YES】