iOS 计算label的宽度和高度

//根据宽度求高度 content 计算的内容 width 计算的宽度 font字体大小

+ (CGFloat)getLabelHeightWithText:(NSString *)text width:(CGFloat)width font: (CGFloat)font

{

CGRect rect = [text boundingRectWithSize:CGSizeMake(width, MAXFLOAT) options:NSStringDrawingUsesLineFragmentOrigin attributes:@{NSFontAttributeName:[UIFont ZKYLTFont:font]} context:nil];

return rect.size.height;

}

//根据高度度求宽度 text 计算的内容 Height 计算的高度 font字体大小

+ (CGFloat)getWidthWithText:(NSString *)text height:(CGFloat)height font:(CGFloat)font{

CGRect rect = [text boundingRectWithSize:CGSizeMake(MAXFLOAT, height)

options:NSStringDrawingUsesLineFragmentOrigin

attributes:@{NSFontAttributeName:[UIFont systemFontOfSize:font]}

context:nil];

return rect.size.width;

}