UITableview 中的 UICollectionView - 获取被点击的 UICollectionView 的标签 [英] UICollectionView in UITableview - Get tag of tapped UICollectionView

问题描述

我在 UITableView 中添加了 UICollectionView.现在，我想确定用户点击哪个单元格以及该 UICollectionView 的 indexPath.

I have added UICollectionView in UITableView. Now, I want to identify on which cell the user taps and the indexPath of that UICollectionView.

我得到了正确的 indexPath 但无法获得他点击的 UICollectionView 的标签.我正在做这样的事情来获得点击

I'm getting correct indexPath but could not get the tag of on which the UICollectionView he tapped. I'm doing something like this to get tap

    func collectionView(collectionView: UICollectionView, didSelectItemAtIndexPath indexPath: NSIndexPath) {
    print("\(collectionView.tag) ---- \(indexPath.item) ")
}

完整代码

class UserLibraryViewController: UIViewController {

extension UserLibraryViewController : UITableViewDelegate { }

extension UserLibraryViewController : UITableViewDataSource {

func tableView(tableView: UITableView, titleForHeaderInSection section: Int) -> String? {
    return myBooksGenre[section]
}

func numberOfSectionsInTableView(tableView: UITableView) -> Int {
    return myBooksGenre.count
}

func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
    return 1
}

func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
    let cell = tableView.dequeueReusableCellWithIdentifier("userBooksTableViewCell") as! UserLibraryTableViewCell
    return cell
}
}

TableViewCell

class UserLibraryTableViewCell: UITableViewCell {
@IBOutlet weak var collectionView: UICollectionView!
}

extension UserLibraryTableViewCell : UICollectionViewDataSource {

func collectionView(collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {

    return 12
}

func collectionView(collectionView: UICollectionView, cellForItemAtIndexPath indexPath: NSIndexPath) -> UICollectionViewCell {
    let cell = collectionView.dequeueReusableCellWithReuseIdentifier("userBooksCollectionViewCell", forIndexPath: indexPath) as! UserLibraryCollectionViewCell



    return cell
}

func collectionView(collectionView: UICollectionView, didSelectItemAtIndexPath indexPath: NSIndexPath) {

    print("\(collectionView.tag) ---- \(indexPath.item) ")


}
}

extension UserLibraryTableViewCell : UICollectionViewDelegateFlowLayout {

func collectionView(collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAtIndexPath indexPath: NSIndexPath) -> CGSize {
    let itemsPerRow:CGFloat = 4
    let hardCodedPadding:CGFloat = 5
    let itemWidth = (collectionView.bounds.width / itemsPerRow) - hardCodedPadding
    let itemHeight = collectionView.bounds.height - (2 * hardCodedPadding)
    return CGSize(width: itemWidth, height: itemHeight)
}

}

推荐答案

您的 tableView 中有多个部分，因此您可以在 NSIndexPath 中创建一个 NSIndexPath 实例code>UserLibraryTableViewCell 并像这样在 cellForRowAtIndexPath 中初始化它.

You are having multiple section in your tableView, so you can create one NSIndexPath instance in your UserLibraryTableViewCell and initialize it in the cellForRowAtIndexPath like this.

class UserLibraryTableViewCell: UITableViewCell {

    var tableIndexPath: NSIndexPath?

}

现在在 cellForRowAtIndexPath 中设置这个 tableIndexPath.

Now set this tableIndexPath in the cellForRowAtIndexPath.

func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
    let cell = tableView.dequeueReusableCellWithIdentifier("userBooksTableViewCell") as! UserLibraryTableViewCell
    cell.tableIndexPath = indexPath
    return cell
}

现在在collectionView的didSelectItemAtIndexPath中像这样访问tableIndexPath.

Now in didSelectItemAtIndexPath of collectionView access tableIndexPath like this.

func collectionView(collectionView: UICollectionView, didSelectItemAtIndexPath indexPath: NSIndexPath) {

     print("\(self.tableIndexPath) ---- \(indexPath.item) ")
}

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