将参数传递给 Swift 中的选择器函数[重复]

我想通过一个范围到一个名为 a 的函数selector from a timer。具体参考一个cell这样我就可以更新一些内容UI.

所以我想要这样的东西：

timer = Timer.init(timeInterval: 1.0, target: self, selector: #selector(downloadTimer(cell: cell), userInfo: nil, repeats: true)

Function

func downloadTimer(cell: InnerCollectionCell) {
    cell.progressBar.setProgress(downloadProgress, animated: true)
}

虽然我可能有点侄女假设这可以做到？

- - - 编辑 - - -

按照下面的示例，但没有像往常一样从单元格中获得预期结果

let innerCell: InnerCollectionCell = collectionView.dequeueReusableCell(withReuseIdentifier: reuseIdentifierInner, for: indexPath) as! InnerCollectionCell

timer = Timer.init(timeInterval: 1.0, target: self, selector: #selector(downloadTimer(_:)), userInfo: innerCell, repeats: true)


func downloadTimer(_ timer: Timer) {

    let cell = timer.userInfo

    cell. // no options as expected of a cell

}

如果数据发送正确，我期望有更多这样的选项：

使用用户信息设置计时器

timer = Timer.init(timeInterval: 1.0, target: self, selector: #selector(downloadTimer(cell: cell), userInfo: data, repeats: true)

并获取用户信息如下

func downloadTimer(_ timer: Timer) {
   let data = timer.userInfo
}

- - - 编辑 - - -

按照下面的示例，但没有像往常一样从单元格中获得预期结果

let innerCell: InnerCollectionCell = collectionView.dequeueReusableCell(withReuseIdentifier: reuseIdentifierInner, for: indexPath) as! InnerCollectionCell

timer = Timer.init(timeInterval: 1.0, target: self, selector: #selector(downloadTimer(_:)), userInfo: innerCell, repeats: true)


func downloadTimer(_ timer: Timer) {

    let cell = timer.userInfo as! InnerCollectionCell

    cell. // no options as expected of a cell

}