问题来源 ios 超过一定行数的label强制在末尾加上一个...展开且可以点击成全文
https://segmentfault.com/q/1010000004452279
利用YYText可以简单的解决这个问题。
关键字: truncationToken / YYText
- (void)viewDidLoad {
[superviewDidLoad];
//需求类似:https://segmentfault.com/q/1010000004452279
//代码来自:YYText示例demo
NSMutableAttributedString *text = [NSMutableAttributedStringnew];
UIFont *font = [UIFontsystemFontOfSize:16];
//添加文本
NSString *title =@"豫章故郡，洪都新府。星分翼轸，地接衡庐。襟三江而带五湖，控蛮荆而引瓯越。物华天宝，龙光射牛斗之墟；人杰地灵，徐孺下陈蕃之榻。雄州雾列，俊采星驰。台隍枕夷夏之交，宾主尽东南之美。都督阎公之雅望，棨戟遥临；宇文新州之懿范，襜帷暂驻。十旬休假，胜友如云；千里逢迎，高朋满座。腾蛟起凤，孟学士之词宗；紫电青霜，王将军之武库。家君作宰，路出名区；童子何知，躬逢胜饯。时维九月，序属三秋。潦水尽而寒潭清，烟光凝而暮山紫。俨骖騑于上路，访风景于崇阿。临帝子之长洲，得仙人之旧馆。层台耸翠，上出重霄；飞阁流丹，下临无地。鹤汀凫渚，穷岛屿之萦回；桂殿兰宫，列冈峦之体势。";
[text appendAttributedString:[[NSAttributedStringalloc] initWithString:titleattributes:nil]];
text.yy_font = font ;
_label = [YYLabelnew];
_label.userInteractionEnabled =YES;
_label.numberOfLines =0;
_label.textVerticalAlignment =YYTextVerticalAlignmentTop;
_label.frame =CGRectMake(60,60, 260,260);
_label.attributedText = text;
[self.viewaddSubview:_label];
_label.layer.borderWidth =0.5;
_label.layer.borderColor = [UIColorcolorWithRed:0.000green:0.463blue:1.000alpha:1.000].CGColor;
[selfaddSeeMoreButton];
}
- (void)addSeeMoreButton {
__weaktypeof(self) _self =self;
NSMutableAttributedString *text = [[NSMutableAttributedStringalloc] initWithString:@"...more"];
YYTextHighlight *hi = [YYTextHighlightnew];
[hi setColor:[UIColorcolorWithRed:0.578green:0.790blue:1.000alpha:1.000]];
hi.tapAction = ^(UIView *containerView,NSAttributedString *text,NSRange range, CGRect rect) {
YYLabel *label = _self.label;
[label sizeToFit];
};
[text yy_setColor:[UIColorcolorWithRed:0.000green:0.449blue:1.000alpha:1.000]range:[text.stringrangeOfString:@"more"]];
[text yy_setTextHighlight:hirange:[text.stringrangeOfString:@"more"]];
text.yy_font =_label.font;
YYLabel *seeMore = [YYLabelnew];
seeMore.attributedText = text;
[seeMore sizeToFit];
NSAttributedString *truncationToken = [NSAttributedStringyy_attachmentStringWithContent:seeMorecontentMode:UIViewContentModeCenterattachmentSize:seeMore.frame.sizealignToFont:text.yy_fontalignment:YYTextVerticalAlignmentCenter];
_label.truncationToken = truncationToken;
}
