第十四天:SwiftArtistry

 

参考链接:https://github.com/soapyigu/Swift-30-Projects

 

import UIKit

struct Work {
    let title: String
    let image: UIImage
    let info: String
    var isExpanded: Bool
}

 

import UIKit

struct Artist {
    let name: String
    let bio: String
    let image: UIImage
    var works: [Work]
    
    init(name: String, bio: String, image: UIImage, works: [Work]) {
        self.name = name
        self.bio = bio
        self.image = image
        self.works = works
    }
    
    static func artistsFromBundle() -> [Artist] {
        
        var artists = [Artist]()
        
        guard let url = Bundle.main.url(forResource: "artists", withExtension: "json") else {
            return artists
        }
        
        do {
            let data = try Data.init(contentsOf: url)
            guard let rootObject = try
                JSONSerialization.jsonObject(with: data, options: .allowFragments) as? [String: Any] else {
                    return artists
            }
            
            guard let artistObjects = rootObject["artists"] as? [[String: AnyObject]] else {
                return artists
            }
            
            for artistObject in artistObjects {
                if let name = artistObject["name"] as? String,
                    let bio = artistObject["bio"] as? String,
                    let imageName = artistObject["image"] as? String,
                    let image = UIImage.init(named: imageName),
                    let worksObject = artistObject["works"] as? [[String : String]] {
                    
                    var works = [Work]()
                    
                    for workObject in worksObject {
                        if let workTitle = workObject["title"],
                            let workImageName = workObject["image"],
                            let workImage = UIImage.init(named: workImageName + ".jpg"),
                            let info = workObject["info"] {
                            
                            works.append(Work(title: workTitle, image: workImage, info: info, isExpanded: false))
                        }
                    }
                    
                    let artist = Artist(name: name, bio: bio, image: image, works: works)
                    artists.append(artist)
                }
            }
        } catch {
            return artists
        }
        
        return artists
    }
}

 

import UIKit

class ArtistTableViewCell: UITableViewCell {
    
    @IBOutlet weak var bioLabel: UILabel!
    @IBOutlet weak var nameLabel: UILabel!
    @IBOutlet weak var artistImageView: UIImageView!

    override func awakeFromNib() {
        super.awakeFromNib()
        // Initialization code
    }

    override func setSelected(_ selected: Bool, animated: Bool) {
        super.setSelected(selected, animated: animated)

        // Configure the view for the selected state
    }

}

 

import UIKit

class WorkTableViewCell: UITableViewCell {

    @IBOutlet weak var workImageView: UIImageView!
    @IBOutlet weak var workTitleLabel: UILabel!
    @IBOutlet weak var moreInfoTextView: UITextView!
    
    override func awakeFromNib() {
        super.awakeFromNib()
        // Initialization code
    }

    override func setSelected(_ selected: Bool, animated: Bool) {
        super.setSelected(selected, animated: animated)

        // Configure the view for the selected state
    }

}

 

import UIKit

class ArtistListViewController: UIViewController {

    let artists = Artist.artistsFromBundle()
    
    @IBOutlet weak var tableView: UITableView!
    
    override func viewDidLoad() {
        super.viewDidLoad()

        // Do any additional setup after loading the view.
        
        tableView.rowHeight = UITableViewAutomaticDimension
        tableView.estimatedRowHeight = 140
        
        NotificationCenter.default.addObserver(forName: .UIContentSizeCategoryDidChange, object: .none, queue: OperationQueue.main) { [weak self] _ in
            self?.tableView.reloadData()
        }
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }
    
    // MARK: - Navigation

    // In a storyboard-based application, you will often want to do a little preparation before navigation
    override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
        // Get the new view controller using segue.destinationViewController.
        // Pass the selected object to the new view controller.
        if let destination = segue.destination as? ArtistDetailViewController,
            let indexPath = tableView.indexPathForSelectedRow {
            destination.selectedArtist = artists[indexPath.row]
        }
    }

}

extension ArtistListViewController: UITableViewDataSource {
    func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        return artists.count
    }
    
    func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        let cell = tableView.dequeueReusableCell(withIdentifier: "Cell", for: indexPath) as! ArtistTableViewCell
        
        let artist = artists[indexPath.row]
        
        cell.bioLabel.text = artist.bio
        cell.bioLabel.textColor = UIColor.init(white: 114 / 255, alpha: 1)
        
        cell.artistImageView.image = artist.image
        cell.nameLabel.text = artist.name
        
        cell.nameLabel.backgroundColor = UIColor.init(red: 1, green: 152 / 255, blue: 0, alpha: 1)
        cell.nameLabel.textColor = UIColor.white
        cell.nameLabel.textAlignment = .center
        cell.selectionStyle = .none
        
        cell.nameLabel.font = UIFont.preferredFont(forTextStyle: .headline)
        cell.bioLabel.font = UIFont.preferredFont(forTextStyle: .body)
        
        return cell
    }
}

 

import UIKit

class ArtistDetailViewController: UIViewController {

    var selectedArtist: Artist!
    
    let moreInfoText = "Select For More info >"
    
    @IBOutlet weak var tableView: UITableView!
    
    override func viewDidLoad() {
        super.viewDidLoad()

        // Do any additional setup after loading the view.
        
        title = selectedArtist.name
        
        tableView.rowHeight = UITableViewAutomaticDimension
        tableView.estimatedRowHeight = 300
        
        NotificationCenter.default.addObserver(forName: .UIContentSizeCategoryDidChange, object: .none, queue: OperationQueue.main) { [weak self] _ in
            self?.tableView.reloadData()
        }
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }
    

    /*
    // MARK: - Navigation

    // In a storyboard-based application, you will often want to do a little preparation before navigation
    override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
        // Get the new view controller using segue.destinationViewController.
        // Pass the selected object to the new view controller.
    }
    */

}

extension ArtistDetailViewController: UITableViewDataSource {
    func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        return selectedArtist.works.count
    }
    
    func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        let cell = tableView.dequeueReusableCell(withIdentifier: "Cell", for: indexPath) as! WorkTableViewCell
        
        let work = selectedArtist.works[indexPath.row]
        
        cell.workTitleLabel.text = work.title
        cell.workImageView.image = work.image
        
        cell.workTitleLabel.backgroundColor = UIColor.init(white: 204 / 255, alpha: 1)
        cell.workTitleLabel.textAlignment = .center
        cell.moreInfoTextView.textColor = UIColor.init(white: 114 / 255, alpha: 1)
        cell.selectionStyle = .none
        
        cell.moreInfoTextView.text = work.isExpanded ? work.info : moreInfoText
        cell.moreInfoTextView.textAlignment = work.isExpanded ? .left : .center
        
        cell.workTitleLabel.font = UIFont.preferredFont(forTextStyle: UIFontTextStyle.headline)
        cell.moreInfoTextView.font = UIFont.preferredFont(forTextStyle: UIFontTextStyle.footnote)
        
        return cell
    }
}

extension ArtistDetailViewController: UITableViewDelegate {
    func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
        guard let cell =  tableView.cellForRow(at: indexPath) as? WorkTableViewCell else {
            return
        }
        
        var work = selectedArtist.works[indexPath.row]
        
        work.isExpanded = !work.isExpanded
        selectedArtist.works[indexPath.row] = work
        
        cell.moreInfoTextView.text = work.isExpanded ? work.info : moreInfoText
        cell.moreInfoTextView.textAlignment = work.isExpanded ? .left : .center
        
        tableView.beginUpdates()
        tableView.endUpdates()
        
        tableView.scrollToRow(at: indexPath, at: .top, animated: true)
        
    }
}