YYLabel 常用方法 2022-02-25

1. 设置空心区域<显示特殊标签>

原理就是设置不显示文字的区域，用于显示图片的内容；
注意设置最大宽度，否则不会换行preferredMaxLayoutWidth

+ (YYTextContainer *)getLiveThemeTextContainer:(CGFloat)indent
{
    //liveThemeLabel的宽度
    CGFloat width = kScreen_Width - 175;
    UIBezierPath *path = [UIBezierPath bezierPathWithRect:CGRectMake(0, 0, width, 60)];
    UIBezierPath *headIndentPath = [UIBezierPath bezierPathWithRect:CGRectMake(0, 0, indent, 16)];
    YYTextContainer *container = [YYTextContainer containerWithPath:path];
    container.exclusionPaths = @[headIndentPath];
    
    return container;
}
YYLabel *classNameLabel = nil;
   _classNameLabel = [[YYLabel alloc] init];
    _classNameLabel.text = @"            --";
    _classNameLabel.font = HQ_Font_Medium(14);
    _classNameLabel.numberOfLines = 2;
//注意设置最大宽度，否则不会换行的
    _classNameLabel.preferredMaxLayoutWidth = kScreen_Width - 175;
    [_containView addSubview:_classNameLabel];

 NSAttributedString *attri = xxxxxx;
 YYTextContainer *container = [[self class] getLiveThemeTextContainer:indent];
 YYTextLayout *layout = [YYTextLayout layoutWithContainer:container text:attri];
classNameLabel.textLayout = layout;