OC-show View for Array.count并画虚线

摘自https://github.com/CaiWanFeng/BeautifulView

- (void)setItemsArray:(NSArray *)itemsArray {
    _itemsArray = itemsArray;
     
    UIView *lastView = nil;
     
    for (int i = 0; i < _itemsArray.count; i ++) {
        CQPickTimeAlertItem *itemView = [[CQPickTimeAlertItem alloc] init];
        [self addSubview:itemView];
        if (!lastView) {
            itemView.frame = CGRectMake(5, 40, self.frame.size.width-10, 0);
        } else {
            itemView.frame = CGRectMake(5, CGRectGetMaxY(lastView.frame) + 5, self.frame.size.width-10, 0);
        }
        itemView.model = _itemsArray[i];
        lastView = itemView;
    }
     
    // 调整自身高度
    self.frame = CGRectMake(self.frame.origin.x, self.frame.origin.y, self.frame.size.width, CGRectGetMaxY(lastView.frame)+10);
     
    // 虚线边框
    CAShapeLayer *imaginaryLine = [CAShapeLayer layer];
    imaginaryLine.frame = CGRectMake(0, 0, self.frame.size.width, self.frame.size.height);
    imaginaryLine.path = [UIBezierPath bezierPathWithRoundedRect:self.bounds cornerRadius:0].CGPath;
    imaginaryLine.lineWidth = 1. / [[UIScreen mainScreen] scale];
    imaginaryLine.lineDashPattern = @[@2, @2];
    imaginaryLine.fillColor = [UIColor clearColor].CGColor;
    imaginaryLine.strokeColor = [UIColor grayColor].CGColor;
    [self.layer addSublayer:imaginaryLine];
}

- (void)layoutSubviews {
    [super layoutSubviews];
    
    [self.titleLabel sizeToFit]; //自动拿labelframe
    self.titleLabel.frame = CGRectMake(0, 0, self.titleLabel.frame.size.width + 6, self.titleLabel.frame.size.height + 2);
    
    // 设置富文本：首行缩进
    NSMutableParagraphStyle *style = [[NSMutableParagraphStyle alloc]init];
    style.firstLineHeadIndent = self.titleLabel.frame.size.width + 4;
    NSMutableAttributedString *attrString = [[NSMutableAttributedString alloc] initWithString:self.descLabel.text];
    [attrString addAttribute:NSParagraphStyleAttributeName value:style range:NSMakeRange(0, self.titleLabel.text.length)];
    
    self.descLabel.attributedText = attrString;
    
    self.descLabel.frame = CGRectMake(0, 0, self.frame.size.width, 30);
    [self.descLabel sizeToFit];
    
    self.frame = CGRectMake(self.frame.origin.x, self.frame.origin.y, self.frame.size.width, CGRectGetMaxY(self.descLabel.frame));
}