UITextKit框架的学习（一）

来源：互联网发布：mastercam自动编程编辑：程序博客网时间：2024/05/29 08:51

利用NSTextAttachment实现简单的图文混排

    //添加UItextView，NSTextView是支持富文本编辑器的控件    UITextView *label=[[UITextView alloc]initWithFrame:CGRectMake(20, 50, self.view.frame.size.width-40, 300)];    [self.view addSubview:label];    //设置内容    NSMutableAttributedString *string =[[NSMutableAttributedString alloc]initWithString:@"123456789101112" attributes:nil];    NSTextAttachment *textAttachment = [[ NSTextAttachment alloc ] initWithData:nil ofType:nil ] ;    UIImage * smileImage = [UIImage imageNamed:@"test.jpg"];//    方法1      textAttachment.image = [self image:smileImage byScalingToSize:CGSizeMake(20,20)];//    方法2//    textAttachment.image =smileImage;//    textAttachment.bounds=CGRectMake(0, 0, 20, 20);    NSAttributedString * textAttachmentString = [ NSAttributedString attributedStringWithAttachment:textAttachment ] ;    [ string insertAttributedString:textAttachmentString atIndex:6 ] ;    label.attributedText = string ;

#pragma makr-返回修改大小后的图片- (UIImage *)image:(UIImage*)image byScalingToSize:(CGSize)targetSize {    UIImage *sourceImage = image;    UIImage *newImage = nil;    UIGraphicsBeginImageContext(targetSize);    CGRect thumbnailRect = CGRectZero;    thumbnailRect.origin = CGPointZero;    thumbnailRect.size.width  = targetSize.width;    thumbnailRect.size.height = targetSize.height;    [sourceImage drawInRect:thumbnailRect];    newImage = UIGraphicsGetImageFromCurrentImageContext();    UIGraphicsEndImageContext();    return newImage ;}

这里写图片描述

AttributedString属性参照
// NSFontAttributeName 设置字体属性，默认值：字体：Helvetica(Neue) 字号：12
// NSForegroundColorAttributeNam 设置字体颜色，取值为 UIColor对象，默认值为黑色
// NSBackgroundColorAttributeName 设置字体所在区域背景颜色，取值为 UIColor对象，默认值为nil, 透明色
// NSLigatureAttributeName 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
// NSKernAttributeName 设定字符间距，取值为 NSNumber 对象（整数），正值间距加宽，负值间距变窄
// NSStrikethroughStyleAttributeName 设置删除线，取值为 NSNumber 对象（整数）
// NSStrikethroughColorAttributeName 设置删除线颜色，取值为 UIColor 对象，默认值为黑色
// NSUnderlineStyleAttributeName 设置下划线，取值为 NSNumber 对象（整数），枚举常量 NSUnderlineStyle中的值，与删除线类似
// NSUnderlineColorAttributeName 设置下划线颜色，取值为 UIColor 对象，默认值为黑色
// NSStrokeWidthAttributeName 设置笔画宽度，取值为 NSNumber 对象（整数），负值填充效果，正值中空效果
// NSStrokeColorAttributeName 填充部分颜色，不是字体颜色，取值为 UIColor 对象
// NSShadowAttributeName 设置阴影属性，取值为 NSShadow 对象
// NSTextEffectAttributeName 设置文本特殊效果，取值为 NSString 对象，目前只有图版印刷效果可用：
// NSBaselineOffsetAttributeName 设置基线偏移值，取值为 NSNumber （float）,正值上偏，负值下偏
// NSObliquenessAttributeName 设置字形倾斜度，取值为 NSNumber （float）,正值右倾，负值左倾
// NSExpansionAttributeName 设置文本横向拉伸属性，取值为 NSNumber （float）,正值横向拉伸文本，负值横向压缩文本
// NSWritingDirectionAttributeName 设置文字书写方向，从左向右书写或者从右向左书写
// 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
// NSAttachmentAttributeName 设置文本附件,取值为NSTextAttachment对象,常用于文字图片混排
// NSParagraphStyleAttributeName 设置文本段落排版格式，取值为 NSParagraphStyle 对象

添加字体，颜色

 //添加UItextView，NSTextView是支持富文本编辑器的控件    UITextView *label=[[UITextView alloc]initWithFrame:CGRectMake(20, 50, self.view.frame.size.width-40, 300)];    [self.view addSubview:label];    //设置内容    NSString *originStr = @"Hello,中秋节！";    NSMutableAttributedString *string =[[NSMutableAttributedString alloc]initWithString:originStr attributes:nil];    //给所有字符设置字体为Zapfino，字体高度为15像素    [string addAttribute: NSFontAttributeName value: [UIFont fontWithName: @"Zapfino" size: 15]                   range: NSMakeRange(0, originStr.length)];    //分段控制，最开始5个字符颜色设置成蓝色    [string addAttribute: NSForegroundColorAttributeName value: [UIColor blueColor] range: NSMakeRange(0, 5)];    //分段控制，第6个字符开始的3个字符，设置为红色    [string addAttribute: NSForegroundColorAttributeName value: [UIColor redColor] range: NSMakeRange(6, 3)];    label.attributedText = string ;

这里写图片描述

其他设置

//添加UItextView，NSTextView是支持富文本编辑器的控件
UITextView *label=[[UITextView alloc]initWithFrame:CGRectMake(20, 50, self.view.frame.size.width-40, 300)];
[self.view addSubview:label];

//设置内容NSString *originStr = @"Hello,过大年！";//设置背景色NSDictionary *attrDict1 = @{ NSBackgroundColorAttributeName: [UIColor orangeColor] };//设置字体颜色 NSDictionary *attrDict2 = @{ NSForegroundColorAttributeName: [UIColor redColor] };//设置字体连体//NSLigatureAttributeName 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，//                        2 表示使用所有连体符号，默认值为 1（iOS 不支持 2）NSDictionary *attrDict3 = @{ NSLigatureAttributeName: [NSNumber numberWithInt: 0],                             NSFontAttributeName: [UIFont fontWithName: @"futura" size: 30] };//设置字体间距 //NSKernAttributeName 设定字符间距，取值为 NSNumber 对象（整数），正值间距加宽，负值间距变窄NSDictionary *attrDict4 = @{ NSKernAttributeName: @(0),                             NSFontAttributeName: [UIFont systemFontOfSize: 20]                             };//设置删除线//NSStrikethroughStyleAttributeName 设置删除线，取值为 NSNumber 对象（整数），枚举常量 NSUnderlineStyle中的值// NSUnderlineStyleNone   不设置删除线// NSUnderlineStyleSingle 设置删除线为细单实线// NSUnderlineStyleThick  设置删除线为粗单实线// NSUnderlineStyleDouble 设置删除线为细双实线NSDictionary *attrDict5 = @{ NSStrikethroughStyleAttributeName: @(NSUnderlineStyleThick),                             NSFontAttributeName: [UIFont systemFontOfSize:20] };//设置双删除线NSDictionary *attrDict6 = @{ NSStrikethroughStyleAttributeName: @(NSUnderlineStyleDouble),                             NSFontAttributeName: [UIFont systemFontOfSize:20] };//设置删除线及颜色 //NSStrikethroughColorAttributeName 设置删除线颜色，取值为 UIColor 对象，默认值为黑色NSDictionary *attrDict7 = @{ NSStrikethroughColorAttributeName: [UIColor orangeColor],                             NSStrikethroughStyleAttributeName: @(3),                             NSFontAttributeName: [UIFont systemFontOfSize:20] };//设置下划线及颜色 //NSUnderlineColorAttributeName 设置下划线颜色，取值为 UIColor 对象，默认值为黑色NSDictionary *attrDict8 = @{ NSUnderlineColorAttributeName: [UIColor orangeColor],                             NSUnderlineStyleAttributeName: @(NSUnderlineStyleThick),                             NSFontAttributeName: [UIFont systemFontOfSize:20] };//NSStrokeWidthAttributeName 设置笔画宽度，取值为 NSNumber 对象（整数），负值填充效果，正值中空效果NSDictionary *attrDict9 = @{ NSStrokeWidthAttributeName: @(-3),                             NSFontAttributeName: [UIFont systemFontOfSize:30] };//设置斜影NSShadow *shadow = [[NSShadow alloc] init];  //NSShadow 对象比较简单，只有3个属性：阴影颜色，模糊半径和偏移shadow.shadowOffset = CGSizeMake(3, 3);      //阴影偏移（X方向偏移和Y方向偏移）shadow.shadowBlurRadius = 0.5;               //模糊半径shadow.shadowColor = [UIColor orangeColor];  //阴影颜色NSDictionary *attrDict10 = @{ NSShadowAttributeName: shadow,                             NSFontAttributeName: [UIFont systemFontOfSize:20] };//设置文字特效//NSTextEffectAttributeName 设置文本特殊效果，取值为 NSString 对象，目前只有一个可用的特效：//NSTextEffectLetterpressStyle（凸版印刷效果），适用于iOS 7.0及以上NSDictionary *attrDict11 = @{ NSTextEffectAttributeName: NSTextEffectLetterpressStyle,                             NSForegroundColorAttributeName: [UIColor grayColor],                             NSFontAttributeName: [UIFont systemFontOfSize:30] };//设置文字基线//NSBaselineOffsetAttributeName 设置基线偏移值，取值为 NSNumber （float）,正值上偏，负值下偏NSDictionary *attrDict12 = @{ NSBaselineOffsetAttributeName: @(-10),                             NSFontAttributeName: [UIFont systemFontOfSize:20] };//设置文字斜体方向//NSObliquenessAttributeName 设置字形倾斜度，取值为 NSNumber （float）,正值右倾，负值左倾NSDictionary *attrDict13 = @{ NSObliquenessAttributeName: @(-0.5),                             NSFontAttributeName: [UIFont systemFontOfSize:30] };//设置文字拉伸//NSExpansionAttributeName 设置文本横向拉伸属性，取值为 NSNumber （float）,正值横向拉伸文本，负值横向压缩文本NSDictionary *attrDict14 = @{ NSExpansionAttributeName: @(-1),                             NSFontAttributeName: [UIFont systemFontOfSize:20] };//设置文字书写方向//NSWritingDirectionAttributeName 设置文字书写方向，取值为以下组合//@[@(NSWritingDirectionLeftToRight | NSTextWritingDirectionEmbedding)]//@[@(NSWritingDirectionLeftToRight | NSTextWritingDirectionOverride)]//@[@(NSWritingDirectionRightToLeft | NSTextWritingDirectionEmbedding)]//@[@(NSWritingDirectionRightToLeft | NSTextWritingDirectionOverride)]NSDictionary *attrDict15 = @{ NSWritingDirectionAttributeName: @[@(NSWritingDirectionLeftToRight | NSTextWritingDirectionEmbedding)],                             NSFontAttributeName: [UIFont systemFontOfSize:20] };//设置打开链接//NSLinkAttributeName 设置链接属性，点击后调用浏览器打开指定URL地址NSDictionary *attrDict16 = @{ NSLinkAttributeName: [NSURL URLWithString: @"http://www.baidu.com"],NSFontAttributeName: [UIFont systemFontOfSize:20] };label.editable = NO;        //必须禁止输入，否则点击将弹出输入键盘label.scrollEnabled = NO;   //可选label.delegate = self;      //必须设置，否则代理函数不会被回调//设置文字对齐方式// alignment 对齐方式，取值枚举常量 NSTextAlignment//    enum {//        NSTextAlignmentLeft      = 0,//        NSTextAlignmentCenter    = 1,//        NSTextAlignmentRight     = 2,//        NSTextAlignmentJustified = 3,//        NSTextAlignmentNatural   = 4,//    };//    typedef NSInteger NSTextAlignment;label.text = @"alignment : NSTextAlignmentCenter";label.text = @"alignment : NSTextAlignmentJustified";// NSParagraphStyleNSMutableParagraphStyle *paraStyle01 = [[NSMutableParagraphStyle alloc] init];paraStyle01.alignment = NSTextAlignmentNatural;NSDictionary *attrDict17 = @{ NSParagraphStyleAttributeName: paraStyle01,                              NSFontAttributeName: [UIFont systemFontOfSize: 12] };//设置首行缩进//firstLineHeadIndent 首行缩进，取值 floatlabel.text = @"firstLineHeadIndent： 24";label.text = @"firstLineHeadIndent： 48";// NSParagraphStyleNSMutableParagraphStyle *paraStyle02 = [[NSMutableParagraphStyle alloc] init];paraStyle02.firstLineHeadIndent = 24;NSDictionary *attrDict18 = @{ NSParagraphStyleAttributeName: paraStyle01,                              NSFontAttributeName: [UIFont systemFontOfSize: 12] };//除首行的缩进label.text = @"headIndent： 24";label.text = @"headIndent： 48";// NSParagraphStyleNSMutableParagraphStyle *paraStyle03 = [[NSMutableParagraphStyle alloc] init];paraStyle03.headIndent = 24;NSDictionary *attrDict19 = @{ NSParagraphStyleAttributeName: paraStyle01,                              NSFontAttributeName: [UIFont systemFontOfSize: 12] };//行尾缩进label.text = @"tailIndent： 48";label.text = @"tailIndent： 252";// NSParagraphStyleNSMutableParagraphStyle *paraStyle04 = [[NSMutableParagraphStyle alloc] init];paraStyle04.tailIndent = 48;NSDictionary *attrDict20 = @{ NSParagraphStyleAttributeName: paraStyle01,                              NSFontAttributeName: [UIFont systemFontOfSize: 12] };//设置行高label.text = @"lineHeightMultiple： 0.6";label.text = @"lineHeightMultiple： 2.5";// NSParagraphStyleNSMutableParagraphStyle *paraStyle05 = [[NSMutableParagraphStyle alloc] init];paraStyle05.lineHeightMultiple = 0.6;NSDictionary *attrDict21 = @{ NSParagraphStyleAttributeName: paraStyle01,                              NSFontAttributeName: [UIFont systemFontOfSize: 12] };//设置段落label.text = @"paragraphSpacingBefore： -7";label.text = @"paragraphSpacingBefore： 25";// NSParagraphStyleNSMutableParagraphStyle *paraStyle06 = [[NSMutableParagraphStyle alloc] init];paraStyle06.paragraphSpacingBefore = -7;NSDictionary *attrDict22 = @{ NSParagraphStyleAttributeName: paraStyle06,                              NSFontAttributeName: [UIFont systemFontOfSize: 12] };//行文本切断//lineBreakMode 断行方式，取值枚举常量 NSLineBreakMode//    enum {//        NSLineBreakByWordWrapping = 0, //自动换行，单词切断//        NSLineBreakByCharWrapping,     //自动换行，字母切断//        NSLineBreakByClipping,         //非自动换行，不切断//        NSLineBreakByTruncatingHead,   //非自动换行，行首切断//        NSLineBreakByTruncatingTail,   //非自动换行，行尾切断//        NSLineBreakByTruncatingMiddle  //非自动换行，中间切断//    };//    typedef NSUInteger NSLineBreakMode;label.text = @"lineBreakMode： NSLineBreakByTruncatingHead";label.text = @"lineBreakMode： NSLineBreakByTruncatingTail";// NSParagraphStyleNSMutableParagraphStyle *paraStyle01 = [[NSMutableParagraphStyle alloc] init];paraStyle01.lineBreakMode = NSLineBreakByTruncatingHead;NSDictionary *attrDict01 = @{ NSParagraphStyleAttributeName: paraStyle01,                              NSFontAttributeName: [UIFont systemFontOfSize: 12] };//开启断词功能_label11.text = @"hyphenationFactor： 0.3";_label12.text = @"hyphenationFactor： 0.9";// NSParagraphStyleNSMutableParagraphStyle *paraStyle01 = [[NSMutableParagraphStyle alloc] init];paraStyle01.hyphenationFactor = 0.3;NSDictionary *attrDict01 = @{ NSParagraphStyleAttributeName: paraStyle01,                              NSFontAttributeName: [UIFont systemFontOfSize: 15] };label.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attrDict16];

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