在开发中我们经常会需要用到富文本,如果每次使用都去创建设置的话比较繁琐,这个时候一个好的框架能帮我们省去不少时间.YYText 就是一个使用比较成熟的框架,现在我们就开始学习YYText.
安装
- 1 CocoasPod 安装
pod 'YYText' - 2 手动导入
[YYText] (https://github.com/ibireme/YYText)
手动导入需要添加依赖库
UIKit
CoreFoundation
CoreText
QuartzCore
Accelerate
MobileCoreServices
内容
9.png
打开YYText.h
#import
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我们主要用到的都在YYLabel 和YYTextView
二者用法类似 我们主要研究YYLabel
@interface YYLabel : UIView
@property (nullable, nonatomic, copy) IBInspectable NSString *text;
@property (null_resettable, nonatomic, strong) IBInspectable UIColor *textColor;
@property (nullable, nonatomic, strong) IBInspectable NSString *fontName_;
@property (nonatomic) IBInspectable CGFloat fontSize_;
@property (nonatomic) IBInspectable BOOL fontIsBold_;
@property (nonatomic) IBInspectable NSUInteger numberOfLines;
@property (nonatomic) IBInspectable NSInteger lineBreakMode;
@property (nonatomic) IBInspectable CGFloat preferredMaxLayoutWidth;
@property (nonatomic, getter=isVerticalForm) IBInspectable BOOL verticalForm;
@property (nonatomic) IBInspectable NSInteger textAlignment;
@property (nonatomic) IBInspectable NSInteger textVerticalAlignment;
@property (nullable, nonatomic, strong) IBInspectable UIColor *shadowColor;
@property (nonatomic) IBInspectable CGPoint shadowOffset;
@property (nonatomic) IBInspectable CGFloat shadowBlurRadius;
@property (nullable, nonatomic, copy) IBInspectable NSAttributedString *attributedText;
@property (nonatomic) IBInspectable CGFloat insetTop_;
@property (nonatomic) IBInspectable CGFloat insetBottom_;
@property (nonatomic) IBInspectable CGFloat insetLeft_;
@property (nonatomic) IBInspectable CGFloat insetRight_;
@property (nonatomic) IBInspectable BOOL debugEnabled_;
@property (null_resettable, nonatomic, strong) UIFont *font;
@property (nullable, nonatomic, copy) NSAttributedString *truncationToken;
@property (nullable, nonatomic, strong) id textParser;
@property (nullable, nonatomic, strong) YYTextLayout *textLayout;
@property (nullable, nonatomic, copy) UIBezierPath *textContainerPath;
@property (nullable, nonatomic, copy) NSArray *exclusionPaths;
@property (nonatomic) UIEdgeInsets textContainerInset;
@property (nullable, nonatomic, copy) id linePositionModifier;
@property (nonnull, nonatomic, copy) YYTextDebugOption *debugOption;
@property (nullable, nonatomic, copy) YYTextAction textTapAction;
@property (nullable, nonatomic, copy) YYTextAction textLongPressAction;
@property (nullable, nonatomic, copy) YYTextAction highlightTapAction;
@property (nullable, nonatomic, copy) YYTextAction highlightLongPressAction;
@property (nonatomic) BOOL displaysAsynchronously;
@property (nonatomic) BOOL clearContentsBeforeAsynchronouslyDisplay;
@property (nonatomic) BOOL fadeOnAsynchronouslyDisplay;
@property (nonatomic) BOOL fadeOnHighlight;
@property (nonatomic) BOOL ignoreCommonProperties;
@end
丛类里面我们可以看到声明了各种属性,通过设置不同的属性达到要求,这个具体问题的时候我们讲解.
使用和测试
- 1 基本用法
YYLabel *label = [YYLabel new];
label.frame = ...
label.font = ...
label.textColor = ...
label.textAlignment = ...
label.lineBreakMode = ...
label.numberOfLines = ...
label.text = ...
- 2 属性文本
先上代码
#import
NSString* YuJian= @"听见 冬天的离开 我在某年某月醒过来 我想我等我期待 未来却不能理智安排 -- 阴天 傍晚车窗外 未来有一个人在等待 向左向右向前看 爱要拐几个弯才来 我遇见谁会有怎样的对白 我等的人他在多远的未来 我听见风来自地铁和人海 我排著队拿著爱的号码牌 我往前飞飞过一片时间海 我们也常在爱情里受伤害 我遇见谁会有怎样的对白 我等的人他在多远的未来 我听见风来自地铁和人海 我排著队拿著爱的号码牌 我往前飞飞过一片时间海 我们也常在爱情里受伤害 我看著路梦的入口有点窄 我遇见你是最美丽的意外 @终有一天我的谜底会揭开";
#define kScreenHeight [UIScreen mainScreen].bounds.size.height
#define kScreenWidth [UIScreen mainScreen].bounds.size.width
文字属性
/**
文字属性
*/
-(void)test1
{
YYLabel* label=[[YYLabel alloc]initWithFrame:CGRectMake(30, 50, kScreenWidth-60, kScreenHeight-100)];
[self.view addSubview:label];
label.numberOfLines=0;
NSMutableAttributedString* atext=[[NSMutableAttributedString alloc]initWithString:YuJian];
//设置字体大小
[atext yy_setFont:[UIFont systemFontOfSize:20] range:atext.yy_rangeOfAll];
//局部不同颜色
NSRange range0=[[atext string]rangeOfString:@"冬天的离开"];
[atext yy_setColor:[UIColor blueColor] range:range0];
//设置行间距
atext.yy_lineSpacing=10;
//设置下划线
NSRange range1=[[atext string]rangeOfString:@"我等的人" ];
YYTextDecoration* deco=[YYTextDecoration decorationWithStyle:(YYTextLineStyleSingle) width:[NSNumber numberWithInt:1] color:[UIColor redColor]];
[atext yy_setTextUnderline:deco range:range1];
//阴影
NSRange range2=[[atext string]rangeOfString:@"傍晚车窗外" options:(nil)];
NSShadow* shadow=[[NSShadow alloc]init];
[shadow setShadowColor:[UIColor redColor]];
[shadow setShadowBlurRadius:1];
[shadow setShadowOffset:CGSizeMake(2, 2)];
[atext yy_setShadow:shadow range:range2];
//文本内阴影
NSRange range3=[[atext string]rangeOfString:@"我在某年某月醒过来"];
YYTextShadow* dow=[YYTextShadow new];
dow.color=[UIColor yellowColor];
dow.offset=CGSizeMake(0, 2);
dow.radius=1;
[atext yy_setTextShadow:dow range:range3];
label.attributedText=atext;
}
效果
5D58A48D-E994-42C6-9B32-922F8249DF8E.png
高亮和点击事件
//高亮文本和点击事件
-(void)test2
{
YYLabel* label=[[YYLabel alloc]initWithFrame:CGRectMake(30, 50, kScreenWidth-60, kScreenHeight-100)];
[self.view addSubview:label];
label.numberOfLines=0;
NSMutableAttributedString* atext=[[NSMutableAttributedString alloc]initWithString:YuJian];
//设置字体大小
[atext yy_setFont:[UIFont systemFontOfSize:20] range:atext.yy_rangeOfAll];
NSRange range4=[[atext string] rangeOfString:@"向左向右向前看"];
[atext yy_setTextHighlightRange:range4 color:[UIColor redColor] backgroundColor:[UIColor grayColor] tapAction:^(UIView * _Nonnull containerView, NSAttributedString * _Nonnull text, NSRange range, CGRect rect) {
NSString* str=text.string;
NSLog(@"你点击了 %@ ---range %ld", [str substringWithRange:range] ,range.length);
}];
label.attributedText=atext;
}
效果
57E94F5E-8FE4-4F57-B1E9-1942AB8745BC.png
E8B95751-DAF1-4BBA-9BDC-FFD842B39009.png
简单的用法就是这些了,YYText很强大,还有图文混排等高大上的功能,等楼主抽空再研究讲解