UILabel富文本 段落格式以及UILabel添加圖片

以前文本整理有一點亂，這邊從新整理一下，下面是效果圖，一共兩個UILabel，

 

富文本整理：

 /*NSForegroundColorAttributeName設置字體顏色，對象UIColor;
     NSParagraphStyleAttributeName設置段落格式，對象NSMutableParagraphStyle;
     NSFontAttributeName設置字體，對象UIFont;
     NSBackgroundColorAttributeName設置背景顏色，對象UIColor;
     NSKernAttributeName設置字符間距，對象NSNumber
     NSStrikethroughStyleAttributeName是指刪除線樣式 對象NSUnderlineStyle
     NSStrikethroughColorAttributeName刪除線顏色，對象UIColor
     NSUnderlineStyleAttributeName設置下劃線，參考刪除線
     NSUnderlineColorAttributeName設置下劃線顏色
     NSStrokeWidthAttributeName設置筆畫寬度，對象NSNumber，負值填充效果，正值中空效果
     NSStrokeColorAttributeName當文字中空或者填充設置文字的描邊顏色，對象UIColor；
     NSShadowAttributeName 設置陰影，NSShadow對象
     NSBaselineOffsetAttributeName設置基線偏移值，對象NSNumber （float）,正值上偏，負值下偏
     NSObliquenessAttributeName設置字形傾斜度，對象NSNumber （float）,正值右傾，負值左傾
     NSExpansionAttributeName 設置文本橫向拉伸屬性，對象NSNumber （float）,正值橫向拉伸文本，負值橫向壓縮文本
     NSVerticalGlyphFormAttributeName   設置文字排版方向，取值爲 NSNumber 對象(整數)，0 表示橫排文本，1 表示豎排文本
     NSLinkAttributeName設置連接屬性，點擊後調用瀏覽器打開指定URL地址,對象NSString，NSUrl，這個只能UITextView可用UITextView的代理方法中shouldInteractWithURL返回true可用
      NSTextEffectAttributeName設置文本特殊效果，目前只有一個可用效果  NSTextEffectLetterpressStyle（凸版印刷效果
      設置連體屬性，取值爲NSNumber 對象(整數)，0 表示沒有連體字符，1 表示使用默認的連體字符//沒有測出效果
     */

源碼展現：

 NSString *text = @"池塘大橋下，遊過一羣鴨，快來快來數一數，二四六七八，嘎嘎嘎嘎，真呀真多呀，fly，數不清到底多少鴨";
    NSMutableParagraphStyle * paragraphStyle = [[NSMutableParagraphStyle alloc] init];
    //行間距爲
    [paragraphStyle setLineSpacing:8];
    NSMutableAttributedString *string = [[NSMutableAttributedString alloc] initWithString:text attributes:@{NSForegroundColorAttributeName :  [UIColor blueColor], NSParagraphStyleAttributeName: paragraphStyle,  NSFontAttributeName:[UIFont boldSystemFontOfSize:18]}] ;

    //設置特殊字體文本格式
    NSRange range = [text rangeOfString:@"池塘大橋下"];
    [string addAttributes:@{NSForegroundColorAttributeName:[UIColor redColor],
                            NSFontAttributeName:[UIFont boldSystemFontOfSize:12],NSBackgroundColorAttributeName:[UIColor yellowColor],NSKernAttributeName:@(12),NSStrikethroughStyleAttributeName:@(NSUnderlineStyleDouble),NSStrikethroughColorAttributeName:[UIColor purpleColor]} range:range];//添加屬性
    
    NSRange range1 = [text rangeOfString:@"遊過"];
    [string addAttributes:@{NSStrokeWidthAttributeName:@(-2),NSStrokeColorAttributeName:[UIColor redColor]} range:range1];//添加屬性
    
    
    NSRange range2 = [text rangeOfString:@"一羣鴨"];
    NSShadow *shadow = [NSShadow new];
    [shadow setShadowColor:[UIColor redColor]];
    [shadow setShadowOffset:CGSizeMake(5.0f, 5.0f)];//設置x，y軸偏移量
    [shadow setShadowBlurRadius:1.0];//設置模糊度
    [string addAttributes:@{NSShadowAttributeName:shadow} range:range2];//添加屬性

    NSRange range3 = [text rangeOfString:@"快來快來"];
    [string addAttributes:@{NSBaselineOffsetAttributeName:@(10)} range:range3];//添加屬性
    
    NSRange range4 = [text rangeOfString:@"數一數"];
    [string addAttributes:@{NSObliquenessAttributeName:@(0.5)} range:range4];//添加屬性
    NSRange range5 = [text rangeOfString:@"二四"];
    [string addAttributes:@{NSExpansionAttributeName:@(0.8)} range:range5];//添加屬性
    NSRange range6 = [text rangeOfString:@"六七八"];
    [string addAttributes:@{NSExpansionAttributeName:@(-0.8)} range:range6];//添加屬性
    
    /**
     沒有測出具體的區別
      NSWritingDirectionAttributeName    設置文字書寫方向，從左向右書寫或者從右向左書寫
     @[@(NSWritingDirectionLeftToRight | NSWritingDirectionEmbedding)]
     @[@(NSWritingDirectionLeftToRight | NSWritingDirectionOverride)]
     @[@(NSWritingDirectionRightToLeft | NSWritingDirectionEmbedding)]
     @[@(NSWritingDirectionRightToLeft | NSWritingDirectionOverride)]
     */

    [string addAttributes:@{NSWritingDirectionAttributeName:@[@(NSWritingDirectionRightToLeft | NSWritingDirectionEmbedding)]} range:NSMakeRange(0, text.length)];//添加屬性
    
    [string addAttributes:@{NSVerticalGlyphFormAttributeName:@1} range:NSMakeRange(0, text.length)];//添加屬性
    
    NSRange range8 = [text rangeOfString:@"嘎嘎嘎嘎"];
    NSURL *url = [NSURL URLWithString:@"http://www.baidu.com"];
    [string addAttributes:@{NSLinkAttributeName:url} range:range8];//添加屬性
    NSRange range9 = [text rangeOfString:@"真呀真多呀"];
    [string addAttributes:@{NSTextEffectAttributeName:NSTextEffectLetterpressStyle} range:range9];//添加屬性
    NSRange range10 = [text rangeOfString:@"fly"];
    [string addAttributes:@{NSLigatureAttributeName:@0} range:range10];//添加屬性
    
    self.label.attributedText = string;

 

NSMutableParagraphStyle用法整理：

 

    NSTextAttachment *attachment = [[NSTextAttachment alloc] init];

    //使用一張圖片做爲Attachment數據

    attachment.image = [UIImage imageNamed:@"chepaihao"];

    //這裏bounds的x值並不會產生影響

    attachment.bounds = CGRectMake(5,  (self.label1.font.lineHeight - self.label1.font.pointSize) / 2, 20, 10);

    

    NSMutableParagraphStyle * paragraphStyle1 = [[NSMutableParagraphStyle alloc] init];

    [paragraphStyle1 setLineSpacing:20];

    //首行縮進

    [paragraphStyle1 setFirstLineHeadIndent:20];

    [paragraphStyle1 setLineBreakMode:NSLineBreakByTruncatingMiddle];

    //兩端對齊的）文本對齊方式

        paragraphStyle1.minimumLineHeight = 10;//最低行高

        paragraphStyle1.maximumLineHeight = 20;//最大行高

        paragraphStyle1.paragraphSpacing = 45;//段與段之間的間距

//    paragraphStyle1.paragraphSpacingBefore = 1000;//段首行空白空間

        paragraphStyle1.baseWritingDirection = NSWritingDirectionLeftToRight;//從左到右的書寫方向（一共➡️三種）

//        paragraphStyle1.lineHeightMultiple = -100;沒有測出效果

    //    paragraphStyle1.hyphenationFactor = 1;//連字屬性 在iOS，惟一支持的值分別爲0和1

    NSMutableAttributedString *attributedString = [[NSMutableAttributedString alloc] initWithString:@"你是一個好人,你是一個好人,你是一個好人,你是一個好人,你是一個好人,你是一個好人,你是一個好人,你是一個好人,你是一個好人,你是一個好人" attributes:@{NSParagraphStyleAttributeName: paragraphStyle1}];

        [attributedString appendAttributedString:[NSAttributedString attributedStringWithAttachment:attachment]];

        [attributedString appendAttributedString:[NSAttributedString attributedStringWithAttachment:attachment]];

        [attributedString appendAttributedString:[[NSMutableAttributedString alloc] initWithString:@"\n你是一個好人,你是一個好人,你是一個好人,你是一個好人,你是一個好人,你是一個好人,你是一個好人,你是一個好人,你是一個好人,你是一個好人" 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;

 

 

 

獲取富文本的高度和普通label的高度同樣：

 

CGSize attSize = [string boundingRectWithSize:CGSizeMake(width, MAXFLOAT) options:NSStringDrawingUsesLineFragmentOrigin | NSStringDrawingUsesFontLeading context:nil].size;