IOS--OHAttributedLabel

OHAttributedLabel 富文本标签

https://github.com/AliSoftware/OHAttributedLabel

以下是我渲染出来的效果

OHAttributedLabel

This class allows you to use a UILabel with NSAttributedStrings, in order to display styled text with various style (mixed fonts, color, size, ...) in a unique label. It is a subclass of UILabel which adds an attributedTextproperty. Use this property, instead of the text property, to set and get the NSAttributedString to display.

这个类允许你让UILabel使用富文本,显示出极具动感而独特的文本标签.它继承至UILabel并添加了一个attributedText属性.

Note: This class is compatible with iOS4.3+ and has been developped before the release of the iOS6 SDK (before Apple added support for NSAttributedLabel in the UILabel class itself). It can still be used with the iOS6 SDK (the attributedText property hopefully match the one chosen by Apple) if you need support for eariler iOS versions or for the additional features it provides.

注意:这个类兼容iOS4.3+,在iOS6 SDK出来之前就已经出现了(iOS6 SDK出来后使得UILabel支持了NSAttributedLabel).如果你想兼容早期版本,你还是可以使用这个类.

This class also support hyperlinks and URLs. It can automatically detect links in your text, color them and make them touchable; you can also add "custom links" in your text by attaching an URL to a range of your text and thus make it touchable, and even then catch the event of a touch on a link to act as you wish to.

这个类支持高亮链接地址,他可以自动检测你的文本中的链接地址,并使得他们可以触发触摸事件.你也可以给你的文本添加触摸事件.

NSAttributedString and NSTextChecking additions

In addition to this OHAttributedLabel class, you will also find a category of NS(Mutable)AttributedString to ease creation and manipulation of common attributes of NSAttributedString (to easily change the font, style, color, ... of a range of the string). See the header file NSAttributedString+Attributes.h for a list of those comodity methods.

除了OHAttributedLabel这个类,你还会发现有NS(Mutable)AttributedString的category,让你更加便利的创建富文本的相关属性.

Example:

// Build an NSAttributedString easily from a NSString
NSMutableAttributedString* attrStr = [NSMutableAttributedString attributedStringWithString:txt];
// Change font, text color, paragraph style
[attrStr setFont:[UIFont fontWithName:@"Helvetica" size:18]];
[attrStr setTextColor:[UIColor grayColor]];OHParagraphStyle* paragraphStyle = [OHParagraphStyle defaultParagraphStyle];
paragraphStyle.textAlignment = kCTJustifiedTextAlignment;
paragraphStyle.lineBreakMode = kCTLineBreakByWordWrapping;
paragraphStyle.firstLineHeadIndent = 30.f; // indentation for first line
paragraphStyle.lineSpacing = 3.f; // increase space between lines by 3 points
[attrStr setParagraphStyle:paragraphStyle];// Change the color and bold of only one part of the string
[attrStr setTextColor:[UIColor redColor] range:NSMakeRange(10,3)];
[attrStr setTextBold:YES range:NSMakeRange(10,8)];// Add a link to a given portion of the string
[attrStr setLink:someNSURL range:NSMakeRange(8,20)];

There is also a category for NSTextCheckingResult that adds the extendedURL property. This property returns the same value as the URL value for standard link cases, and return a formatted Maps URL forNSTextCheckingTypeAddress link types, that will open Google Maps in iOS version before 6.0 and the Apple's Maps application in iOS 6.0 and later.

NSTextCheckingResult这个类也有个category,我添加了extendedURL属性.这个属性返回与标准链接中的URL同样的值,并返回了一个格式化过的NSTextCheckingTypeAddress链接类型.

OHASMarkupParsers and simple markup to build your attributed strings easily

The library also comes with very simple tag parsers to help you build NSAttributedStrings easily using very simple tags.

这个库允许你使用tag注释的方式来帮助你快速的使用富文本.

the class OHASBasicHTMLParser can parse simple HTML tags like <b> and <u> to make bold and underlined text, change the font color using <font color='…'>, etc

the class OHASBasicMarkupParser can parse simple markup like *bold text*, _underlined text_ and change the font color using markup like {red|some red text} or {#ff6600|Yeah}.

// Example 1: parse HTML in attributed string
basicMarkupLabel.attributedText = [OHASBasicHTMLParser attributedStringByProcessingMarkupInAttributedString:basicMarkupLabel.attributedText];// Example 2: parse basic markup in string
NSAttributedString* as = [OHASBasicMarkupParser attributedStringByProcessingMarkupInString:@"Hello *you*!"];// Example 3: //process markup in-place in a mutable attributed string
NSMutableAttributedString* mas = [NSMutableAttributedString attributedStringWithString:@"Hello *you*!"];
[OHASBasicMarkupParser processMarkupInAttributedString:mas];

Note that OHASBasicHTMLParser is intended to be a very simple tool only to help you build attributed string easier: this is not intended to be a real and complete HTML interpreter, and will never be. For improvements of this feature, like adding other tags or markup languages, refer to issue #88)

注意,OHASBasicHTMLParser 只是一个帮助你简单创建富文本的工具,他可不是一个真正的HTML标签解析器.

UIAppearance support

The OHAttributedLabel class support the UIAppearance proxy API (available since iOS5). See selectors and properties marked using the UI_APPEARANCE_SELECTOR in the header.

This means that if you are targetting iOS5, you can customize all of your OHAttributedLabel links color and underline style to fit your application design, only in one call at the beginning of your application, instead of having to customize these for each instance.

For example, your could implement this in your application:didFinishLoadingWithOptions: delegate method to make all your OHAttributedLabel instances in your whole app display links in green and without underline instead of the default underlined blue:

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{[ [OHAttributedLabel appearance] setLinkColor:[UIColor colorWithRed:0.0 green:0.4 blue:0.0 alpha:1.0] ];[ [OHAttributedLabel appearance] setLinkUnderlineStyle:kCTUnderlineStyleNone ];return YES;
}

使用教程:

请在ARC下使用,不要ARC与MRC混用造成内存泄露!

源码地址 http://pan.baidu.com/s/1pJnY8BL

#import "OHAttributedLabel.h"
#import "OHParagraphStyle.h"
#import "OHTouchesGestureRecognizer.h"

    // 注册字体REGISTER_FONT(bundleFont(@"xinDiXiaoWanzi.ttf"), @"新蒂小丸子体");REGISTER_FONT(bundleFont(@"huaKangShaoNv.ttf"), @"华康少女字体");// 创建富文本stringNSMutableAttributedString* attrStr = \[NSMutableAttributedString attributedStringWithString:\@"还记得吗,窗外那被月光染亮的海洋\你还记得吗,是爱让彼此把夜点亮\为何后来我们用沉默取代依赖 曾经朗朗星空,渐渐阴霾\心碎离开,转身回到最初荒凉里等待 为了寂寞,是否找个人填心中空白\我们变成了世上,最熟悉的陌生人 今后各自曲折,各自悲哀\只怪我们爱得那么汹涌,爱得那么深 于是梦醒了搁浅了沉默了挥手了\却回不了神,如果当初在交会时能忍住了 激动的灵魂"];// 设置富文本基本属性[attrStr setFont:[UIFont fontWithName:CUSTOM_FONT(@"华康少女字体", 0) size:12]];[attrStr setTextColor:[UIColor whiteColor]];[attrStr setTextColor:[UIColor redColor] range:NSMakeRange(9,4)];[attrStr setTextIsUnderlined:YES range:NSMakeRange(9, 4)];[attrStr setTextColor:[UIColor greenColor] range:NSMakeRange(125,30)];[attrStr setFontName:CUSTOM_FONT(@"新蒂小丸子体", 0) size:12 range:NSMakeRange(125,30)];// 设置样式OHParagraphStyle* paragraphStyle = [OHParagraphStyle defaultParagraphStyle];paragraphStyle.textAlignment = kCTTextAlignmentLeft;paragraphStyle.lineBreakMode = kCTLineBreakByWordWrapping;paragraphStyle.firstLineHeadIndent = 0.f; // indentation for first lineparagraphStyle.lineSpacing = 3.f; // increase space between lines by 3 points
    [attrStr setParagraphStyle:paragraphStyle];// 初始化富文本labelOHAttributedLabel *label = \[[OHAttributedLabel alloc] initWithFrame:CGRectMake(0, 0, 300, 200)];label.attributedText = attrStr;label.center = self.view.center;// 添加进主视图[self.view addSubview:label];

以下是渲染的效果:

标题展示图片的代码

    // 注册字体REGISTER_FONT(bundleFont(@"xinDiXiaoWanzi.ttf"), @"新蒂小丸子体");REGISTER_FONT(bundleFont(@"huaKangShaoNv.ttf"), @"华康少女字体");// 创建富文本stringNSMutableAttributedString* attrStr = \[NSMutableAttributedString attributedStringWithString:\@"游贤明\合抱之木，生于毫末；九层之合，起于垒土；千里之行，始于足下。 "];// 设置富文本基本属性[attrStr setFont:[UIFont fontWithName:CUSTOM_FONT(@"华康少女字体", 0) size:12]];[attrStr setTextColor:[UIColor whiteColor]];[attrStr setTextColor:[UIColor redColor] range:NSMakeRange(0,3)];[attrStr setFontName:CUSTOM_FONT(@"新蒂小丸子体", 0) size:26 range:NSMakeRange(0,3)];// 设置样式OHParagraphStyle* paragraphStyle = [OHParagraphStyle defaultParagraphStyle];paragraphStyle.textAlignment = kCTTextAlignmentLeft;paragraphStyle.lineBreakMode = kCTLineBreakByWordWrapping;paragraphStyle.firstLineHeadIndent = 0.f; // indentation for first lineparagraphStyle.lineSpacing = 3.f; // increase space between lines by 3 points
    [attrStr setParagraphStyle:paragraphStyle];// 初始化富文本labelOHAttributedLabel *label = \[[OHAttributedLabel alloc] initWithFrame:CGRectMake(0, 0, 300, 200)];label.attributedText = attrStr;label.center = self.view.center;// 添加进主视图[self.view addSubview:label];

更加完美的设置:

    // 注册字体REGISTER_FONT(bundleFont(@"xinDiXiaoWanzi.ttf"), @"新蒂小丸子体");REGISTER_FONT(bundleFont(@"huaKangShaoNv.ttf"), @"华康少女字体");// 创建富文本stringNSMutableAttributedString* attrStr = \[NSMutableAttributedString attributedStringWithString:\@"还记得吗,窗外那被月光染亮的海洋\n你还记得吗,是爱让彼此把夜点亮\n为何后来我们用沉默取代依赖,曾经朗朗星空,渐渐阴霾\n心碎离开,转身回到最初荒凉里等待\n为了寂寞,是否找个人填心中空白\n我们变成了世上,最熟悉的陌生人\n今后各自曲折,各自悲哀\n只怪我们爱得那么汹涌,爱得那么深\n于是梦醒了搁浅了沉默了挥手了却回不了神\n如果当初在交会时能忍住了,激动的灵魂"];// 设置富文本基本属性[attrStr setFontName:CUSTOM_FONT(@"华康少女字体", 0) size:12];[attrStr setTextColor:[UIColor whiteColor]];[attrStr setTextColor:[UIColor redColor] range:NSMakeRange(9,7)];// 首字大写以及颜色设置[attrStr setFontName:CUSTOM_FONT(@"华康少女字体", 0) size:23 range:NSMakeRange(0,1)];[attrStr setTextColor:[UIColor yellowColor] range:NSMakeRange(0,1)];// 中间字体重新设定[attrStr setFontName:CUSTOM_FONT(@"新蒂小丸子体", 0) size:17 range:NSMakeRange(92,16)];[attrStr setTextColor:[UIColor cyanColor] range:NSMakeRange(92,16)];// 设置样式OHParagraphStyle* paragraphStyle = [OHParagraphStyle defaultParagraphStyle];paragraphStyle.textAlignment = kCTTextAlignmentCenter;paragraphStyle.paragraphSpacing = 3.f;paragraphStyle.paragraphSpacingBefore = 10.f;paragraphStyle.lineBreakMode = kCTLineBreakByWordWrapping;paragraphStyle.firstLineHeadIndent = 0.f; // indentation for first lineparagraphStyle.lineSpacing = 3.f; // increase space between lines by 3 points
    [attrStr setParagraphStyle:paragraphStyle];// 初始化富文本labelOHAttributedLabel *label = \[[OHAttributedLabel alloc] initWithFrame:CGRectMake(0, 0, 300, 400)];label.attributedText = attrStr;label.center = self.view.center;

用富文本Label来显示文章

    // 注册字体REGISTER_FONT(bundleFont(@"xinDiXiaoWanzi.ttf"), @"新蒂小丸子体");REGISTER_FONT(bundleFont(@"huaKangShaoNv.ttf"), @"华康少女字体");// 创建富文本stringNSMutableAttributedString* attrStr = \[NSMutableAttributedString attributedStringWithString:\@"人啊，再强大，又怎去敌那一抔黄土呢？说到底，这人生也不过就是山一程，水一程。与其把自己锁于跌撞里郁怨寡欢、得失不衡，还不如莞然一笑，迎着阳光，把所有的疼痛与繁复，都一一踏在脚下抛置身后。再以最安然祥和的颜靥，来谢过这一场生。 \n------题记/云微若雨\n是否，在佛堂看僧敲木鱼听梵音钟声，于寺庙拈香诵经濯骨洗心，虔诚脱胎如出家之人，方可让内心，少一份纷扰，多一份恬淡呢？可是，这六界风沙本就是那么的强烈与无常啊，怎去奢求一方安宁？尘世烟火如是冷凛如此淡薄，寄居萧瑟，飘絮染野，人们能做的，想是唯有抚著这颗涩涩的心，捡拾满地残红，浅浅掠过吧。"];// 设置富文本基本属性[attrStr setFontName:CUSTOM_FONT(@"华康少女字体", 0) size:12];[attrStr setTextColor:[UIColor whiteColor]];// 设置段落样式OHParagraphStyle* paragraphStyle = [OHParagraphStyle defaultParagraphStyle];paragraphStyle.textAlignment = kCTTextAlignmentNatural;paragraphStyle.paragraphSpacing = 12.f;paragraphStyle.paragraphSpacingBefore = 10.f;paragraphStyle.lineBreakMode = kCTLineBreakByWordWrapping;paragraphStyle.firstLineHeadIndent = 24.f;  // 段落首字缩进paragraphStyle.lineSpacing = 4.f;           // 段落中两行的行间距
    [attrStr setParagraphStyle:paragraphStyle];// 初始化富文本labelOHAttributedLabel *label = \[[OHAttributedLabel alloc] initWithFrame:CGRectMake(0, 0, 300, 400)];label.attributedText = attrStr;label.center = self.view.center;// 添加进主视图[self.view addSubview:label];

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