计算文字尺寸

#define MJTextFont [UIFont systemFontOfSize:15]

/**
 *  计算文字尺寸
 *
 *  @param text    需要计算尺寸的文字
 *  @param font    文字的字体
 *  @param maxSize 文字的最大尺寸
 */

- (CGSize)sizeWithText:(NSString *)text font:(UIFont *)font maxSize:(CGSize)maxSize
{

    NSDictionary *attrs = @{NSFontAttributeName : font};
    return [text boundingRectWithSize:maxSize options:NSStringDrawingUsesLineFragmentOrigin attributes:attrs context:nil].size;
}

CGSize nameSize = [self sizeWithText:self.status.name font:MJNameFont maxSize:CGSizeMake(MAXFLOAT, MAXFLOAT)];
    CGFloat nameX = CGRectGetMaxX(self.iconView.frame) + padding;
    CGFloat nameY = iconY + (iconH - nameSize.height) * 0.5;
    self.nameView.frame = CGRectMake(nameX, nameY, nameSize.width, nameSize.height);