写法一:对象方法,传入:字体/最大尺寸. 即可得到宽高, 
最大尺寸主要限制宽度,如果是一行就给个{MAXFLOAT,MAXFLOAT};如果是多行就限制X值,Y值随便给

- (CGSize)sizeWithFont:(UIFont *)font maxSize:(CGSize)maxSize
{
NSDictionary *attrs = @{NSFontAttributeName : font};
return [self boundingRectWithSize:maxSize options:NSStringDrawingUsesLineFragmentOrigin attributes:attrs context:nil].size;
}

写法二: 传入文字/字体/最大尺寸. 即可得到该文字宽高

-(CGSize)sizeWithText:(NSString *)text font:(UIFont *)font maxW:(CGFloat)maxW
{
NSMutableDictionary *attrs=[NSMutableDictionary dictionary];
attrs[NSFontAttributeName]=font; CGSize maxSize=CGSizeMake(maxW, MAXFLOAT);
return [text boundingRectWithSize:maxSize options:NSStringDrawingUsesLineFragmentOrigin attributes:attrs context:nil].size;
} - (CGSize)sizeWithText:(NSString *)text font:(UIFont *)font
{
return [self sizeWithText:text font:font maxW:MAXFLOAT];
}

自定义控件设置UILable的位置:

self.nameLabel.frame=CGRectMake(iconX, iconY, iconWH, iconWH);

或者:

    CGFloat timeX = nameX;
CGFloat timeY = CGRectGetMaxY(self.nameLabelF) + HWStatusCellBorderW;
CGSize timeSize = [self sizeWithText:status.created_at font:HWStatusCellTimeFont];
self.timeLabelF = (CGRect){{timeX, timeY}, timeSize};
04-28 05:38