UILabel(富文本)
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NSString *str = @"人生若只如初见,何事秋风悲画扇。\n等闲变却故人心,却道故人心易变。\n骊山语罢清宵半,泪雨霖铃终不怨。\n何如薄幸锦衣郎,比翼连枝当日愿。";
NSMutableAttributedString *attrStr = [[NSMutableAttributedString alloc] initWithString:str];
attrStr
添加字体和设置字体的范围
[attrStr addAttribute:NSFontAttributeName
value:[UIFont systemFontOfSize:30.0f]
range:NSMakeRange(0, 3)];
attrStr
添加文字颜色
[attrStr addAttribute:NSForegroundColorAttributeName
value:[UIColor redColor]
range:NSMakeRange(17, 7)];
attrStr
添加下划线
[attrStr addAttribute:NSUnderlineStyleAttributeName
value:[NSNumber numberWithInteger:NSUnderlineStyleSingle]
range:NSMakeRange(8, 7)];
段落样式
NSMutableParagraphStyle *paragraph = [[NSMutableParagraphStyle alloc] init];
//行间距
paragraph.lineSpacing = 10;
//段落间距
paragraph.paragraphSpacing = 20;
//对齐方式
paragraph.alignment = NSTextAlignmentLeft;
//指定段落开始的缩进像素
paragraph.firstLineHeadIndent = 30;
//调整全部文字的缩进像素
paragraph.headIndent = 10;
attrStr
添加段落设置
[attrStr addAttribute:NSParagraphStyleAttributeName
value:paragraph
range:NSMakeRange(0, [str length])];
NSString *urlStr = @"www.南瓜瓜.com";
NSURL *url = [NSURL URLWithString:urlStr];
label
添加链接
注意:label
链接是可以显示出来,但是点不了,有兴趣的朋友可以试试。查资料发现textView
是可以点击的,有shouldInteractWithURL
代理方法回调。
[attrStr addAttribute:NSLinkAttributeName
value:url
range:NSMakeRange(42, 7)];
创建label
UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(60, 100, 200, 0)];
label.backgroundColor = [UIColor lightGrayColor];
//自动换行
label.numberOfLines = 0;
//设置label的富文本
label.attributedText = attrStr;
//label高度自适应
[label sizeToFit];
[self.view addSubview:label];
设置sizeToFit
之后是可以取出label
的高度的,这样做label
高度自适应。
CGFloat height = label.frame.size.height;
NSLog(@"height = %f",height);