标签排序

1

/**
 * 专门用来更新标签按钮的frame
 */
- (void)updateTagButtonFrame
{
    // 更新标签按钮的frame  3
    for (int i = 0; i<self.tagButtons.count; i++) {
        XMGTagButton *tagButton = self.tagButtons[i];
        
        if (i == 0) { // 最前面的标签按钮
            tagButton.x = 0;
            tagButton.y = 0;
        } else { // 其他标签按钮
            XMGTagButton *lastTagButton = self.tagButtons[i - 1];
            // 计算当前行左边的宽度
            CGFloat leftWidth = CGRectGetMaxX(lastTagButton.frame) + XMGTagMargin;
            // 计算当前行右边的宽度
            CGFloat rightWidth = self.contentView.width - leftWidth;
            if (rightWidth >= tagButton.width) { // 按钮显示在当前行
                tagButton.y = lastTagButton.y;
                tagButton.x = leftWidth;
            } else { // 按钮显示在下一行
                tagButton.x = 0;
                tagButton.y = CGRectGetMaxY(lastTagButton.frame) + XMGTagMargin;
            }
        }
    }
}

2

{
    
    //医生领域
    
    CGFloat padding = 5;
    CGFloat titBtnX = 15;
    CGFloat titBtnY = 5;
    CGFloat titBtnH = 25;
    CGFloat kwidth = (kScreenWidth-30);
    
    NSString *tags = dominStr;
    if (tags!= nil||![tags isEqualToString:@""]) {
        NSArray *tagArray  = [tags componentsSeparatedByString:@"，"];
        
        
        for (int i = 0 ; i<tagArray.count; i++) {
            
            NSString *tagStr = tagArray[i];
            if (tagStr.length == 0 || [tagStr isEqualToString:@""] || tagStr == nil) continue;
            
            UILabel *tagBtn = [JMFoundation CommonLabelWithFont:12 textColor:UIColorFromRGB(0x3e2723)];
            tagBtn.layer.borderColor = UIColorFromRGB(0x3e2723).CGColor;
            tagBtn.layer.borderWidth = 1.5;
            tagBtn.text = tagArray[i];
            tagBtn.textAlignment = NSTextAlignmentCenter;
            tagBtn.layer.cornerRadius = 25/2;
            tagBtn.layer.masksToBounds = YES;
            
            //计算文字大小
            CGSize titleSize = [tagArray[i] boundingRectWithSize:CGSizeMake(MAXFLOAT, titBtnH) options:NSStringDrawingUsesLineFragmentOrigin attributes:@{NSFontAttributeName:[UIFont systemFontOfSize:12]} context:nil].size;
            CGFloat titBtnW = titleSize.width + 2 * padding;
            //判断按钮是否超过屏幕的宽
            if ((titBtnX + titBtnW) > kwidth) {
            
                titBtnX = 15;
                titBtnY += titBtnH + padding;
                
                _dominTagH = titBtnY;
            }
            //设置按钮的位置
            tagBtn.frame = CGRectMake(titBtnX, titBtnY, titBtnW, titBtnH);
            
            titBtnX += titBtnW + padding;
            
            [self.dominMidView addSubview:tagBtn];
            
            
        }
    }

}