ios - 如何为特定标记的 UIImageView 设置图像

Question

我正在创建许多带有唯一标签的 UIImageView

    let imgView = UIImageView()
    imgView.frame = CGRect(x:  tableView.bounds.size.width-100, y: 20, width: 40, height: 40)
    imgView.image = UIImage(named: "arrowUp")
    imgView.tag = section
    viewHeader.addSubview(imgView)

现在我想为特定标记的 UIImageView 设置另一个图像“arrowDown”，如何以编程方式设置它？

类似于:

imgView.tag[i].image = UIImage(named: "arrowDown")

Answer 1

尝试

(viewHeader.viewWithTag(<#YourTag#>) as? UIImageView)?.image = UIImage(named: "arrowDown")

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或者创建一个数组

var all = [UIImageView]()

viewHeader.addSubview(imgView)
all.append(imgView)

然后

all[tag].image = /////