將資料從表格視圖單元格傳遞到段控制元件

我正在使用表格視圖單元格來顯示資料。我有一個段控制。在第一部分中，我將顯示帶有按鈕控制元件的移動串列。當用戶單擊復選標記按鈕時，我想將這些表格視圖單元格值發送到秒控制元件并添加到它上面..請根據以下代碼給我一些示例代碼..這是表格視圖單元格。

import UIKit
    
    
    
    protocol CellSubclassDelegate: AnyObject {
        func buttonTapped(cell: MovieViewCell)
    }
    
    class MovieViewCell: UITableViewCell {
        
        weak var delegate:CellSubclassDelegate?
        
        static let identifier = "MovieViewCell"
        
    
        @IBOutlet weak var movieImage: UIImageView!
        @IBOutlet weak var movieTitle: UILabel!
        @IBOutlet weak var movieOverview: UILabel!
        
        @IBOutlet weak var someButton: UIButton!
        
        
       
        @IBAction func someButtonTapped(_ sender: UIButton) {
            self.delegate?.buttonTapped(cell: self)
        }
        
        
        func configureCell(title: String?, overview: String?, data: Data?) {
            
            movieTitle.text = title
            movieOverview.text = overview
            
            movieImage.image = nil
            if let imageData = data{
                movieImage.image = UIImage(data: imageData)
               //  movieImage.image = nil
            }
        }
        
    }

行代碼的表格視圖單元格..

 func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        
        let cell = tableView.dequeueReusableCell(withIdentifier: MovieViewCell.identifier, for: indexPath) as! MovieViewCell
        
        let row = indexPath.row
        let title = presenter.getTitle(by: row)
        let overview = presenter.getOverview(by: row)
        let baseImageURL = presenter.getUrlImage(by: row)
        let data = presenter.getImageData(by: baseImageURL)
        cell.delegate = self
        cell.configureCell(title: title, overview: overview, data: data)
        
       
        
        return cell
    }

這是委托的代碼實作。

extension MovieViewController : CellSubclassDelegate{
    func buttonTapped(cell: MovieViewCell) {
        guard (self.tableView.indexPath(for: cell) != nil) else {return}
            let customViewController = storyboard?.instantiateViewController(withIdentifier: "MovieDeatilsViewController") as? MovieDeatilsViewController
        customViewController?.titlemovie = cell.movieTitle.text ?? ""
        customViewController?.imagemovie = cell.movieImage.image
        customViewController?.overview = cell.movieOverview.text ?? ""
     //   customViewController?.movieTitleHeader.text = cell.movieTitle.text ?? ""
        self.navigationController?.pushViewController(customViewController!, animated: true)
                    
                   
    }
} 

是否選擇方法實作..

 func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
        let dc = storyboard?.instantiateViewController(withIdentifier: "MovieDeatilsViewController") as! MovieDeatilsViewController
        
        let row = indexPath.row
       dc.titlemovie = presenter.getTitle(by: row) ?? ""
       dc.overview = presenter.getOverview(by: row) ?? ""
       
       let baseImageURL = presenter.getUrlImage(by: row)
       
       dc.imagemovie = UIImage(data: presenter.getImageData(by: baseImageURL)!)
       
        self.navigationController?.pushViewController(dc, animated: true)
   }
    
    
}

這是應用程式的螢屏截圖。

當用戶單擊復選框時，我想將這些表視圖單元格值添加到最喜歡的段控制元件中

uj5u.com熱心網友回復：

是您需要實作的示例（方法和變數的名稱不是確切的名稱，它只是為了幫助您理解原理）。在這種情況下，只有一個表視圖：

struct MoviePresenter {
    var nbRows: Int = 0
}

class MoviesVC  {
    var presenter = MoviePresenter()
    var tableViewSelect : UISegmentedControl!
    var movieTableView: UITableView!
    
    var favoriteMovies = [Int]() // the list of row of favorite movies
    
    // utility function to know if movie is favorite or not
    func isInFavorites(_ row: Int) -> Bool {
        return favoriteMovies.first(where: {$0 == row}) != nil
    }
    
    // Note : all table view datasource/delegate methods need to check
    // which is the current selected display
    func numberOfRowsInSection(_ section: Int) -> Int {
        if tableViewSelect.selectedSegmentIndex == 0 {
            return presenter.nbRows
        } else {
            return favoriteMovies.count
        }
    }
    
    // in cellForRow
    func cellForRow(indexPath: IndexPath) {
        if tableViewSelect.selectedSegmentIndex == 0 {
            // default display
            let cell = UITableViewCell() // you dequeue your cell here
            // init cell for presenter (by: row)
            if isInFavorites(indexPath.row) {
                // checkMark handling
            }
            
            // to handle checkmark
            cell.tag = indexPath.row
        } else {
            // favorite list
            let cell = UITableViewCell() // you dequeue your favorite cell here
            let row = favoriteMovies[indexPath.row]

            // if you want to handle checkmark
            cell.tag = row
        }
    }
    
    func checkMarkTappedInFavoriteCell(cell: UITableViewCell) {
        let row = cell.tag
        // set/unset favorite check mark when tapped
        if isInFavorites(row) {
            favoriteMovies.removeAll(where: {$0 == row})
        } else {
            favoriteMovies.append(row)
        }
        movieTableView.reloadRows(at: [IndexPath(row: row, section: 0)], with: .none)
    }
    
    // action to be executed when selected segment changes
    @IBAction func tableViewSelectedIndexChanged(_ sender: UISegmentedControl) {
        self.movieTableView.reloadData()
    }
}

這僅在您只需要一個表視圖的情況下。如果您想要 2 個表視圖，分段控制元件的更改也會使一個表視圖可見而另一個不可見。

標籤：IOS 迅速 合适的视图 使用分段控制

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