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关于 Label 文字样式的一些设置

2016-03-02  本文已影响4846人  一杯冰可乐

- (void)loadView

{

[super loadView];

//1.UILable的大小自适应实例:

// ***** label基本属性 *****

UILabel *myLabel=[[UILabel alloc] initWithFrame:CGRectMake(50, 20, 2, 2)];  // 设定位置与大小

//    [myLabel setFont:[UIFont fontWithName:@"Helvetica" size:20.0]]; // 字体和大小

//    myLabel.font = [UIFont boldSystemFontOfSize:18];  // 黑体18号字

[myLabel setNumberOfLines:0];  // 行数,只有设为 0 才可以自适应

[myLabel setBackgroundColor:[UIColor clearColor]];  // 背景色

myLabel.shadowColor = [UIColor darkGrayColor];  // 阴影颜色

myLabel.shadowOffset = CGSizeMake(1.0,1.0);  // 阴影偏移量

NSString *text = @"abcdefghigklmnopqrstuvwxyz";

UIFont *font = [UIFont fontWithName:@"Helvetica" size:20.0];

// *******  根据要显示的text计算label高度  *******

// iOS 7 之后被弃用

CGSize size = [text sizeWithFont:font constrainedToSize:CGSizeMake(175.0f, 2000.0f) lineBreakMode:UILineBreakModeWordWrap];

// iOS 7 后 :

{

NSDictionary * tdic = [NSDictionary dictionaryWithObjectsAndKeys:font, NSFontAttributeName,nil];

size =[text boundingRectWithSize:size options:NSStringDrawingUsesLineFragmentOrigin |NSStringDrawingUsesFontLeading attributes:tdic context:nil].size;

}

CGRect rect = myLabel.frame;

rect.size = size;

[myLabel setFrame:rect];

[myLabel setText:text];

myLabel.shadowColor = [UIColor darkGrayColor];//阴影颜色

myLabel.shadowOffset = CGSizeMake(2.0,2.0);//阴影大小

[self.view addSubview:myLabel];

//2.UILable的基本用法

UILabel *label1 = [[UILabel alloc]initWithFrame:CGRectMake(50.0, 80.0, 200.0, 30.0)];

UILabel *label2 = [[UILabel alloc]initWithFrame:CGRectMake(50.0, 140.0, 200.0, 50.0)];

UILabel *label3 = [[UILabel alloc]initWithFrame:CGRectMake(50.0, 200.0, 200.0, 50.0)];

UILabel *label4 = [[UILabel alloc]initWithFrame:CGRectMake(50.0, 260.0, 200.0, 50.0)];

UILabel *label5 = [[UILabel alloc]initWithFrame:CGRectMake(50.0, 320.0, 200.0, 50.0)];

UILabel *label6 = [[UILabel alloc]initWithFrame:CGRectMake(50.0, 380.0, 200.0, 50.0)];

UILabel *label7 = [[UILabel alloc]initWithFrame:CGRectMake(50.0, 440.0, 200.0, 50.0)];

//设置显示文字

label1.text = @"label1";

label2.text = @"label2";

label3.text = @"label3--label3--label3--label3--label3--label3--label3--label3--label3--label3--label3--11个";

label4.text = @"label4--label4--label4--label4--4个~~~";

label5.text = @"label5--label5--label5--label5--label5--label5--6个";

label6.text = @"label6";

label7.text = @"label7";

//设置字体: 黑体字,正常的是 SystemFontOfSize

label1.font = [UIFont boldSystemFontOfSize:20];

//设置文字颜色

label1.textColor = [UIColor orangeColor];

label2.textColor = [UIColor purpleColor];

//设置背景颜色

label1.backgroundColor = [UIColor clearColor];

label2.backgroundColor = [UIColor colorWithRed:0.5f green:30/255.0f blue:0.3f alpha:0.5f];

//设置文字位置

label1.textAlignment = NSTextAlignmentRight;  // UITextAlignmentRight 等写法在 iOS 6 后弃用了

label2.textAlignment = NSTextAlignmentCenter;

//设置字体大小适应label宽度

label4.adjustsFontSizeToFitWidth = YES;  // 字越多,越窄

//设置label的行数

label5.numberOfLines = 2;

//设置高亮

label6.highlighted = YES;

label6.highlightedTextColor = [UIColor orangeColor];

//设置阴影

label7.shadowColor = [UIColor redColor];

label7.shadowOffset = CGSizeMake(1.0,1.0);

//设置是否能与用户进行交互

label7.userInteractionEnabled = YES;

//设置label中的文字是否可变,默认值是YES

label3.enabled = NO;

//设置文字过长时的显示格式

// iOS 6 后弃用 UILineBreakModeMiddleTruncation

{

label3.lineBreakMode = UILineBreakModeMiddleTruncation;  //截去中间

//  typedef enum {

//      UILineBreakModeWordWrap = 0,  //以空格为边界,保留单词。

//      UILineBreakModeCharacterWrap,

//      UILineBreakModeClip,  //截去多余部分

//      UILineBreakModeHeadTruncation,    //截去头部

//      UILineBreakModeTailTruncation,    //截去尾部

//      UILineBreakModeMiddleTruncation,  //截去中间

//  } UILineBreakMode;

}

label3.lineBreakMode = NSLineBreakByWordWrapping;

//    typedef NS_ENUM(NSInteger, NSLineBreakMode) {

//        NSLineBreakByWordWrapping = 0,    // //以空格为边界,保留单词。

//        NSLineBreakByCharWrapping, // 截取到范围内(字符串)

//        NSLineBreakByClipping, //简单剪裁,到边界为止

//        NSLineBreakByTruncatingHead, // 从前面开始裁剪字符串: "...wxyz"

//        NSLineBreakByTruncatingTail, // 从后面开始裁剪字符串: "abcd..."

//        NSLineBreakByTruncatingMiddle  // 从中间裁剪字符串:  "ab...yz"

//    }

// 我们使用的xcode是5.0版本,默认使用的是sdk7.0。使用sdk7.0会导致两者效果完全相同。使用sdk6.1运行的时候可以有效区分开

// 如果adjustsFontSizeToFitWidth属性设置为YES,这个属性就来控制文本基线的行为

label4.baselineAdjustment = UIBaselineAdjustmentAlignCenters;

//  typedef enum {

//      UIBaselineAdjustmentAlignBaselines,

//      UIBaselineAdjustmentAlignCenters,

//      UIBaselineAdjustmentNone,

//  } UIBaselineAdjustment;

// ***** 根据属性给固定位置的字体更换颜色或字体大小 *****

NSString *originStr = @"Hello,World!";

//创建 NSMutableAttributedString

NSMutableAttributedString *attributedStr01 = [[NSMutableAttributedString alloc] initWithString: originStr];

//添加属性

//给所有字符设置字体为Zapfino,字体高度为15像素

[attributedStr01 addAttribute: NSFontAttributeName value: [UIFont fontWithName: @"Zapfino" size: 15] range: NSMakeRange(0, originStr.length)];

//分段控制,最开始4个字符颜色设置成蓝色

[attributedStr01 addAttribute: NSForegroundColorAttributeName value: [UIColor blueColor] range: NSMakeRange(0, 5)];

//分段控制,第5个字符开始的3个字符,即第5、6、7字符设置为红色

[attributedStr01 addAttribute: NSForegroundColorAttributeName value: [UIColor redColor] range: NSMakeRange(5, 3)];

//赋值给显示控件label01的 attributedText

UILabel *label01 = [[UILabel alloc] initWithFrame:CGRectMake(50.0, 520.0, 200.0, 50.0)];

label01.attributedText = attributedStr01;

// ***** 给 固定 文字替换成 指定 符号 (多用于禁用字) *****

NSString *search = @"王木木";

NSString *replace = @"***";

NSMutableString *mstr = [[NSMutableString alloc]initWithString:@"dafkasdhf王木木kasddsf"];

NSRange range = [mstr rangeOfString:search];

[mstr replaceCharactersInRange:range withString:replace];

UILabel *labelStr = [[UILabel alloc] initWithFrame:CGRectMake(50.0, 580.0, 200.0, 50.0)];

labelStr.text = master;

// 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

// 例:

UILabel *labeltext1 = [[UILabel alloc] initWithFrame:CGRectMake(240.0, 380.0, 200.0, 50.0)];

UILabel *labeltext2 = [[UILabel alloc] initWithFrame:CGRectMake(240.0, 440.0, 200.0, 50.0)];

UILabel *labeltext3 = [[UILabel alloc] initWithFrame:CGRectMake(240.0, 500.0, 200.0, 50.0)];

NSDictionary *attrDict1 = @{ NSStrikethroughStyleAttributeName: @(NSUnderlineStyleSingle),

NSFontAttributeName: [UIFont systemFontOfSize:18] };

labeltext1.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attrDict1];

NSDictionary *attrDict2 = @{ NSStrikethroughStyleAttributeName: @(NSUnderlineStyleThick),

NSFontAttributeName: [UIFont systemFontOfSize:18] };

labeltext2.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attrDict2];

NSDictionary *attrDict3 = @{ NSStrikethroughStyleAttributeName: @(NSUnderlineStyleDouble),

NSFontAttributeName: [UIFont systemFontOfSize:18] };

labeltext3.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attrDict3];

//NSUnderlineColorAttributeName 设置下划线颜色,取值为 UIColor 对象,默认值为黑色

UILabel *labeltext4 = [[UILabel alloc] initWithFrame:CGRectMake(200.0, 380.0, 200.0, 50.0)];

UILabel *labeltext5 = [[UILabel alloc] initWithFrame:CGRectMake(200.0, 440.0, 200.0, 50.0)];

UILabel *labeltext6 = [[UILabel alloc] initWithFrame:CGRectMake(200.0, 500.0, 200.0, 50.0)];

NSDictionary *attrDict4 = @{ NSUnderlineColorAttributeName: [UIColor blueColor],

NSUnderlineStyleAttributeName: @(NSUnderlineStyleSingle),

NSFontAttributeName: [UIFont systemFontOfSize:22] };

labeltext4.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attrDict4];

NSDictionary *attrDict5 = @{ NSUnderlineColorAttributeName: [UIColor orangeColor],

NSUnderlineStyleAttributeName: @(NSUnderlineStyleThick),

NSFontAttributeName: [UIFont systemFontOfSize:22] };

labeltext5.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attrDict5];

NSDictionary *attrDict6 = @{ NSUnderlineColorAttributeName: [UIColor greenColor],

NSUnderlineStyleAttributeName: @(NSUnderlineStyleDouble),

NSFontAttributeName: [UIFont systemFontOfSize:22] };

labeltext6.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attrDict6];

// 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

UILabel *labeltext7 = [[UILabel alloc] initWithFrame:CGRectMake(200.0, 380.0, 200.0, 50.0)];

UILabel *labeltext8 = [[UILabel alloc] initWithFrame:CGRectMake(200.0, 440.0, 200.0, 50.0)];

UILabel *labeltext9 = [[UILabel alloc] initWithFrame:CGRectMake(200.0, 500.0, 200.0, 50.0)];

NSDictionary *attrDict7 = @{ NSStrokeWidthAttributeName: @(-3),

NSFontAttributeName: [UIFont systemFontOfSize:30] };

labeltext7.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attrDict7];

NSDictionary *attrDict8 = @{ NSStrokeWidthAttributeName: @(0),

NSFontAttributeName: [UIFont systemFontOfSize:30] };

labeltext8.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attrDict8];

NSDictionary *attrDict9 = @{ NSStrokeWidthAttributeName: @(3),

NSFontAttributeName: [UIFont systemFontOfSize:30] };

labeltext9.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attrDict9];

//NSShadowAttributeName 设置阴影属性,取值为 NSShadow 对象

UILabel *labelH01 = [[UILabel alloc] initWithFrame:CGRectMake(200.0, 500.0, 200.0, 50.0)];

NSShadow *shadow1 = [[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

shadow1.shadowOffset = CGSizeMake(16, 5);      //阴影偏移(X方向偏移和Y方向偏移)

shadow1.shadowBlurRadius = 3;              //模糊半径

shadow1.shadowColor = [UIColor orangeColor];  //阴影颜色

NSDictionary *attr = @{ NSShadowAttributeName: shadow1,

NSFontAttributeName: [UIFont systemFontOfSize:20] };

labelH01.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attr];

//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

UILabel *labelH02 = [[UILabel alloc] initWithFrame:CGRectMake(170.0, 380.0, 200.0, 50.0)];

UILabel *labelH03 = [[UILabel alloc] initWithFrame:CGRectMake(170.0, 440.0, 200.0, 50.0)];

UILabel *labelH04 = [[UILabel alloc] initWithFrame:CGRectMake(170.0, 500.0, 200.0, 50.0)];

NSDictionary *attr1 = @{ NSExpansionAttributeName: @(-1),

NSFontAttributeName: [UIFont systemFontOfSize:20] };

labelH02.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attr1];

NSDictionary *attr2 = @{ NSExpansionAttributeName: @(0),

NSFontAttributeName: [UIFont systemFontOfSize:20] };

labelH03.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attr2];

NSDictionary *attr3 = @{ NSExpansionAttributeName: @(0.6),

NSFontAttributeName: [UIFont systemFontOfSize:20] };

labelH04.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attr3];

[self.view addSubview:label1];

[self.view addSubview:label2];

[self.view addSubview:label3];

[self.view addSubview:label4];

[self.view addSubview:label5];

[self.view addSubview:label6];

[self.view addSubview:label7];

[self.view addSubview:label01];

[self.view addSubview:labelStr];

//    [self.view addSubview:labeltext1];

//    [self.view addSubview:labeltext2];

//    [self.view addSubview:labeltext3];

//    [self.view addSubview:labeltext4];

//    [self.view addSubview:labeltext5];

//    [self.view addSubview:labeltext6];

//    [self.view addSubview:labeltext7];

//    [self.view addSubview:labeltext8];

//    [self.view addSubview:labeltext9];

//    [self.view addSubview:labelH01];

//    [self.view addSubview:labelH02];

//    [self.view addSubview:labelH03];

//    [self.view addSubview:labelH04];

}

// ****** AttributedString 可以设置的那些属性 ******

// 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

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