点击tableview内的collectionview单元格导航 [英] navigate on click of collectionview cell inside tableview

问题描述

我有一个 tableview 单元格，我在其中添加了 collectionview 单元格(用于水平滚动).

I have a tableview cell inside which i have added collectionview cell ( for horizontal scrolling).

现在我想在按下水平集合视图的任何单元格时推送到其他导航控制器.怎么做 ?或者我如何定义单元格按下的委托方法.

Now i want to push to other navigation controller on pressing any cell of horizontal collectionview. How to do it ? Or how can i define delegate methods for cell press.

代码:

ViewController.swift :

class ViewController: UIViewController {
    var categories = ["Action", "Drama", "Science Fiction", "Kids", "Horror"]
}

extension ViewController : UITableViewDelegate { }

extension ViewController : UITableViewDataSource {

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

    func numberOfSections(in tableView: UITableView) -> Int {
        return categories.count
    }

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

    func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        let cell = tableView.dequeueReusableCell(withIdentifier: "cell") as! CategoryRow
        return cell
    }

}

CategoryRow.swift

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

extension CategoryRow : UICollectionViewDataSource {

    func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
        return 12
    }

    func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
        let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "videoCell", for: indexPath) as! VideoCell
        return cell
    }

}

extension CategoryRow : UICollectionViewDelegateFlowLayout {

    func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAt indexPath: IndexPath) -> 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)
    }

}

VideoCell.swift

class VideoCell : UICollectionViewCell {

    @IBOutlet weak var imageView: UIImageView!
}

推荐答案

在这里，您将在 CategoryRow 类上的委托方法 didSelectItemAtIndexPath 处单击单元格，然后从那里您可以触发委托以在 ViewController 内调用ViewController.swift:

Here you will get the cell click at the delegate method didSelectItemAtIndexPath on CategoryRow class and from there you can fire a delegate to get call inside ViewController ViewController.swift :

    func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
            let cell = tableView.dequeueReusableCell(withIdentifier: "cell") as! CategoryRow
            cell.delegate = self
            return cell
        }

VideoCell.swift:

    protocol CategoryRowDelegate:class {
    func cellTapped()
    }

CategoryRow.swift:

    class CategoryRow : UITableViewCell {
         weak var delegate:CategoryRowDelegate?
        @IBOutlet weak var collectionView: UICollectionView!
    }

     func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {
    if delegate!= nil {
    delegate?.cellTapped()
    }
    }

在ViewController中添加委托函数

func cellTapped(){
//code for navigation
}

这篇关于点击tableview内的collectionview单元格导航的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！