使用UITextView实现图文混排使用UITextView实现图文混排

使用UITextView实现超链接，与自定义表情皮配，还能加载自定义大小的本地图片与网络图片。

源码请点击github地址下载。

用的是系统UITextView控件的linkTextAttributes和attributedText属性实现了此功能，相关API须在>=7.0的系统上运行。由于实现了在文本里加载网络图片，所以导入了SDWebImage第三方文件，若不需要可以删除LXTextView.h文件里的相关代码（#import "UIImageView+WebCache.h"以及- (void)downloadImageWithUrl:(NSString *)urlString withIndex:(NSInteger)index）。
效果图如下：

文章图片
screen.png 注意：

效果图上匹配了一些错误的网址，那没关系，正则表达式不够严谨，这也可以满足一般需求了。
链接需要深按才有效，系统的原因。

使用方法非常简单，集成代码如下：

LXTextView *textView = [[LXTextView alloc] initWithFrame:CGRectMake(10, 10, kScreenWidth - 20, kScreenHeight - 20)]; textView.delegate = self; textView.editable = NO; // 非编辑状态下才可以点击Url] textView.fontFloat = 18.; textView.textString = @"Thiswww.hiphotos.baidu.comis ancel超链接ofa bri_StringWith Attachment:textAttachment]indfdxcsehttps://www.baidu.comrtAttribu tedStriUse [傲慢]this method to release shared invali dateexwwwwssdvdv.hiphotos.baidu.dsccomamptimers, and [吓]isa覆盖核 http://c.hip[大哭]hotos.baidu.com设施nexstore enough application state information[微笑] to re https://c.hiphotos.baidu.cnstore your"; [self.view addSubview:textView];

核心代码如下：

- (void)setTextString:(NSString *)string { NSDictionary *attributeDict = [NSDictionary dictionaryWithObjectsAndKeys: [UIFont systemFontOfSize:self.fontFloat], NSFontAttributeName, [UIColor blackColor], NSForegroundColorAttributeName,nil]; attributedString = [[NSMutableAttributedString alloc] initWithString:string attributes:attributeDict]; //设置行距与换行模式 NSMutableParagraphStyle * paragraphStyle = [[NSMutableParagraphStyle alloc] init]; paragraphStyle.lineSpacing = 5.0; paragraphStyle.lineBreakMode = NSLineBreakByCharWrapping; [attributedString addAttribute:NSParagraphStyleAttributeName value:paragraphStyle range:NSMakeRange(0, string.length)]; NSArray *emojiArr = [LXHelpClass validateEmojiOfText:attributedString.string]; for (int i = 0; i < emojiArr.count; i++) { NSInteger index = [helpClass.keyArr indexOfObject:emojiArr[i]]; NSString *imgName = [helpClass.valueArr objectAtIndex:index]; NSRange range = [attributedString.string rangeOfString:emojiArr[i] options:NSCaseInsensitiveSearch range:NSMakeRange(0, attributedString.string.length)]; //正则表达式匹配的表情 LXTextAttachment *textAttachmentEmoji = [[LXTextAttachment alloc] initWithData:nil ofType:nil]; textAttachmentEmoji.imgSize = CGSizeMake(30 ,30); textAttachmentEmoji.image = [UIImage imageNamed:imgName] ; NSAttributedString *textAttachmentString = [NSAttributedString attributedStringWithAttachment:textAttachmentEmoji]; [attributedString replaceCharactersInRange:range withAttributedString:textAttachmentString]; }//自定义添加的本地图片 LXTextAttachment *textAttachmentImg = [[LXTextAttachment alloc] initWithData:nil ofType:nil]; textAttachmentImg.imgSize = CGSizeMake(270, 160); textAttachmentImg.image = [UIImage imageNamed:@"bird"]; NSAttributedString *textAttachmentString2 = [NSAttributedString attributedStringWithAttachment:textAttachmentImg]; [attributedString insertAttributedString:textAttachmentString2 atIndex:56]; NSArray *linkArr = [LXHelpClass validateLinkOfText:attributedString.string]; for (int i = 0; i < linkArr.count; i++) { NSRange range = NSRangeFromString(linkArr[i]); //正则表达式匹配的链接 NSString *linkStr = [attributedString.string substringWithRange:range]; [attributedString addAttribute:NSLinkAttributeName value:linkStr range:range]; }//自定义的链接 [attributedString addAttribute:NSLinkAttributeName value:@"http://baidu.com" range:[[attributedString string] rangeOfString:@"超链接"]]; NSDictionary *linkAttributes = @{NSForegroundColorAttributeName:[UIColor greenColor], NSUnderlineColorAttributeName:[UIColor lightGrayColor], NSUnderlineStyleAttributeName:@(NSUnderlinePatternSolid)}; self.linkTextAttributes = linkAttributes; self.attributedText = attributedString; }

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【使用UITextView实现图文混排】