之前文本整理有一点乱,这边重新整理一下,下面是效果图,一共两个UILabel,
富文本整理:
/*NSForegroundColorAttributeName设置字体颜色,对象UIColor;
NSParagraphStyleAttributeName设置段落格式,对象NSMutableParagraphStyle;
NSFontAttributeName设置字体,对象UIFont;
NSBackgroundColorAttributeName设置背景颜色,对象UIColor;
NSKernAttributeName设置字符间距,对象NSNumber
NSStrikethroughStyleAttributeName是指删除线样式 对象NSUnderlineStyle
NSStrikethroughColorAttributeName删除线颜色,对象UIColor
NSUnderlineStyleAttributeName设置下划线,参考删除线
NSUnderlineColorAttributeName设置下划线颜色
NSStrokeWidthAttributeName设置笔画宽度,对象NSNumber,负值填充效果,正值中空效果
NSStrokeColorAttributeName当文字中空或者填充设置文字的描边颜色,对象UIColor;
NSShadowAttributeName 设置阴影,NSShadow对象
NSBaselineOffsetAttributeName设置基线偏移值,对象NSNumber (float),正值上偏,负值下偏
NSObliquenessAttributeName设置字形倾斜度,对象NSNumber (float),正值右倾,负值左倾
NSExpansionAttributeName 设置文本横向拉伸属性,对象NSNumber (float),正值横向拉伸文本,负值横向压缩文本
NSVerticalGlyphFormAttributeName 设置文字排版方向,取值为 NSNumber 对象(整数),0 表示横排文本,1 表示竖排文本
NSLinkAttributeName设置链接属性,点击后调用浏览器打开指定URL地址,对象NSString,NSUrl,这个只能UITextView可用UITextView的代理方法中shouldInteractWithURL返回true可用
NSTextEffectAttributeName设置文本特殊效果,目前只有一个可用效果 NSTextEffectLetterpressStyle(凸版印刷效果
设置连体属性,取值为NSNumber 对象(整数),0 表示没有连体字符,1 表示使用默认的连体字符//没有测出效果
*/
源码展示:
NSString *text = @"池塘大桥下,游过一群鸭,快来快来数一数,二四六七八,嘎嘎嘎嘎,真呀真多呀,fly,数不清到底多少鸭";
NSMutableParagraphStyle * paragraphStyle = [[NSMutableParagraphStyle alloc] init];
//行间距为
[paragraphStyle setLineSpacing:8];
NSMutableAttributedString *string = [[NSMutableAttributedString alloc] initWithString:text attributes:@{NSForegroundColorAttributeName : [UIColor blueColor], NSParagraphStyleAttributeName: paragraphStyle, NSFontAttributeName:[UIFont boldSystemFontOfSize:18]}] ;
//设置特殊字体文本格式
NSRange range = [text rangeOfString:@"池塘大桥下"];
[string addAttributes:@{NSForegroundColorAttributeName:[UIColor redColor],
NSFontAttributeName:[UIFont boldSystemFontOfSize:12],NSBackgroundColorAttributeName:[UIColor yellowColor],NSKernAttributeName:@(12),NSStrikethroughStyleAttributeName:@(NSUnderlineStyleDouble),NSStrikethroughColorAttributeName:[UIColor purpleColor]} range:range];//添加属性
NSRange range1 = [text rangeOfString:@"游过"];
[string addAttributes:@{NSStrokeWidthAttributeName:@(-2),NSStrokeColorAttributeName:[UIColor redColor]} range:range1];//添加属性
NSRange range2 = [text rangeOfString:@"一群鸭"];
NSShadow *shadow = [NSShadow new];
[shadow setShadowColor:[UIColor redColor]];
[shadow setShadowOffset:CGSizeMake(5.0f, 5.0f)];//设置x,y轴偏移量
[shadow setShadowBlurRadius:1.0];//设置模糊度
[string addAttributes:@{NSShadowAttributeName:shadow} range:range2];//添加属性
NSRange range3 = [text rangeOfString:@"快来快来"];
[string addAttributes:@{NSBaselineOffsetAttributeName:@(10)} range:range3];//添加属性
NSRange range4 = [text rangeOfString:@"数一数"];
[string addAttributes:@{NSObliquenessAttributeName:@(0.5)} range:range4];//添加属性
NSRange range5 = [text rangeOfString:@"二四"];
[string addAttributes:@{NSExpansionAttributeName:@(0.8)} range:range5];//添加属性
NSRange range6 = [text rangeOfString:@"六七八"];
[string addAttributes:@{NSExpansionAttributeName:@(-0.8)} range:range6];//添加属性
/**
没有测出具体的区别
NSWritingDirectionAttributeName 设置文字书写方向,从左向右书写或者从右向左书写
@[@(NSWritingDirectionLeftToRight | NSWritingDirectionEmbedding)]
@[@(NSWritingDirectionLeftToRight | NSWritingDirectionOverride)]
@[@(NSWritingDirectionRightToLeft | NSWritingDirectionEmbedding)]
@[@(NSWritingDirectionRightToLeft | NSWritingDirectionOverride)]
*/
[string addAttributes:@{NSWritingDirectionAttributeName:@[@(NSWritingDirectionRightToLeft | NSWritingDirectionEmbedding)]} range:NSMakeRange(0, text.length)];//添加属性
[string addAttributes:@{NSVerticalGlyphFormAttributeName:@1} range:NSMakeRange(0, text.length)];//添加属性
NSRange range8 = [text rangeOfString:@"嘎嘎嘎嘎"];
NSURL *url = [NSURL URLWithString:@"http://www.baidu.com"];
[string addAttributes:@{NSLinkAttributeName:url} range:range8];//添加属性
NSRange range9 = [text rangeOfString:@"真呀真多呀"];
[string addAttributes:@{NSTextEffectAttributeName:NSTextEffectLetterpressStyle} range:range9];//添加属性
NSRange range10 = [text rangeOfString:@"fly"];
[string addAttributes:@{NSLigatureAttributeName:@0} range:range10];//添加属性
self.label.attributedText = string;
NSMutableParagraphStyle用法整理:
NSTextAttachment *attachment = [[NSTextAttachment alloc] init];
//使用一张图片作为Attachment数据
attachment.image = [UIImage imageNamed:@"chepaihao"];
//这里bounds的x值并不会产生影响
attachment.bounds = CGRectMake(5, (self.label1.font.lineHeight - self.label1.font.pointSize) / 2, 20, 10);
NSMutableParagraphStyle * paragraphStyle1 = [[NSMutableParagraphStyle alloc] init];
[paragraphStyle1 setLineSpacing:20];
//首行缩进
[paragraphStyle1 setFirstLineHeadIndent:20];
[paragraphStyle1 setLineBreakMode:NSLineBreakByTruncatingMiddle];
//两端对齐的)文本对齐方式
paragraphStyle1.minimumLineHeight = 10;//最低行高
paragraphStyle1.maximumLineHeight = 20;//最大行高
paragraphStyle1.paragraphSpacing = 45;//段与段之间的间距
// paragraphStyle1.paragraphSpacingBefore = 1000;//段首行空白空间
paragraphStyle1.baseWritingDirection = NSWritingDirectionLeftToRight;//从左到右的书写方向(一共➡️三种)
// paragraphStyle1.lineHeightMultiple = -100;没有测出效果
// paragraphStyle1.hyphenationFactor = 1;//连字属性 在iOS,唯一支持的值分别为0和1
NSMutableAttributedString *attributedString = [[NSMutableAttributedString alloc] initWithString:@"你是一个好人,你是一个好人,你是一个好人,你是一个好人,你是一个好人,你是一个好人,你是一个好人,你是一个好人,你是一个好人,你是一个好人" attributes:@{NSParagraphStyleAttributeName: paragraphStyle1}];
[attributedString appendAttributedString:[NSAttributedString attributedStringWithAttachment:attachment]];
[attributedString appendAttributedString:[NSAttributedString attributedStringWithAttachment:attachment]];
[attributedString appendAttributedString:[[NSMutableAttributedString alloc] initWithString:@"\n你是一个好人,你是一个好人,你是一个好人,你是一个好人,你是一个好人,你是一个好人,你是一个好人,你是一个好人,你是一个好人,你是一个好人" attributes:@{NSParagraphStyleAttributeName: paragraphStyle1}]];
[attributedString appendAttributedString:[NSAttributedString attributedStringWithAttachment:attachment]];
self.label1.backgroundColor = [UIColor redColor];
// self.label1.textAlignment = NSTextAlignmentCenter;
self.label1.attributedText = attributedString;
// self.label1.lineBreakMode = NSLineBreakByCharWrapping;
获取富文本的高度和普通label的高度一样:
CGSize attSize = [string boundingRectWithSize:CGSizeMake(width, MAXFLOAT) options:NSStringDrawingUsesLineFragmentOrigin | NSStringDrawingUsesFontLeading context:nil].size;