iOS7 计算文字的Size和frame 代码片段

NSDictionary *attrs = @{NSFontAttributeName: NameFont};
    CGSize nameMaxSize = CGSizeMake(MAXFLOAT, MAXFLOAT);
    CGSize nameSize = [self.status.name boundingRectWithSize:nameMaxSize options:NSStringDrawingUsesLineFragmentOrigin attributes:attrs context:nil].size;
    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);