iOS 计算行高

直接上代码

//计算多行高度
+ (CGFloat )getStringHeightWithWidth:(CGFloat)width font:(UIFont *)font string:(NSString *)string
{
    NSDictionary *attribute = @{NSFontAttributeName: font};
    CGSize size = [string boundingRectWithSize:CGSizeMake(width, MAXFLOAT) options: NSStringDrawingTruncatesLastVisibleLine | NSStringDrawingUsesLineFragmentOrigin | NSStringDrawingUsesFontLeading attributes:attribute context:nil].size;

    return size.height;
}