计算UILabel宽度和高度

//获取高度

-(CGFloat)getStrHeight:(NSString *)string withFont:(CGFloat)font withWidth:(NSInteger)width

{

NSDictionary *attr=@{NSFontAttributeName:[UIFont systemFontOfSize:font]};

CGSize sizeHeigth = [string boundingRectWithSize:CGSizeMake(width, 100000) options:NSStringDrawingUsesLineFragmentOrigin attributes:attr context:nil].size;

return sizeHeigth.height;

}

//获取宽度

-(CGFloat)getStrWidth:(NSString *)string withFont:(CGFloat)font

{

CGSize size = [string sizeWithAttributes:@{NSFontAttributeName:[UIFont systemFontOfSize:font]}];

return size.width;

}