Question

您好，我想在下面的代码中将NSImageView添加到我的stackView中，但是存在一个错误，因为仅添加了一个。循环是3次迭代，所以通常我应该有3张图片：

    let imageView = NSImageView(frame: NSRect(x: 0, y: 0, width: 50, height: 50))
    imageView.image = image.image

    icons.forEach { _ in
        stackImage.addArrangedSubview(imageView)
    }

    print(stackImage.subviews.count) // Outpout 1

Answer 1

在forloop中创建NSImageView实例。而且您需要检查stackImage.arrangedSubviews.count而不是stackImage.subviews.count

var icons = [NSImage(named: ""),NSImage(named: ""),NSImage(named: "")]
icons.forEach { image in
    let imageView = NSImageView(frame: NSRect(x: 0, y: 0, width: 50, height: 50))
    imageView.image = image
    stackImage.addArrangedSubview(imageView)
}
print(stackImage.arrangedSubviews.count)

Swift：NSStackView，仅添加一个子视图的错误

1 个答案: