自学 iOS

做了这个小demo 之后  感觉OC 和swift 还是有很大的差别的 自己还是要去多看些swift的语法 用的不是很熟练 

1.这个demo 的资源文件 我都是用原工程的 

2.同样的自定义cell 的时候 用的是“SnapKit”这个库

3.其实这一个demo的主要就是自定义cell，思想和OC 是一样的 总感觉swift写的是那么的别扭，可能还是不熟悉语法吧，还是要多看多练

效果

代码 自定义cell 的代码

import UIKit
import SnapKit

struct video {
    let image: String
    let title: String
    let source: String
    
}

class VideoViewCell: UITableViewCell {
    public var titleLabel:UILabel?
    public var picImageView:UIImageView?
    public var startImageView:UIImageView?
    
    override func awakeFromNib() {
        super.awakeFromNib()
        
    }
    
    required init?(coder aDecoder: NSCoder) {
        super.init(coder: aDecoder)
    }
    
    override init(style: UITableViewCellStyle, reuseIdentifier: String?) {
        super.init(style: style, reuseIdentifier: reuseIdentifier);
        self.setUpUI()
    }
    
    func setUpUI() {
        
        self.picImageView = UIImageView.init()
        self.addSubview(self.picImageView!)
        
        self.startImageView = UIImageView.init()
        startImageView?.image = UIImage.init(named: "playBtn")
        self.addSubview(self.startImageView!)
        
        self.titleLabel = UILabel.init()
        self.titleLabel?.textColor = UIColor.white;
        self.titleLabel?.textAlignment = .center
        self.addSubview(self.titleLabel!)

        
        self.picImageView?.snp.makeConstraints { (make) in
            make.top.equalTo(self).offset(0)
            make.left.equalTo(self).offset(0)
            make.width.equalTo(SCREEN_WIDTH)
            make.height.equalTo(self)
        }
        
        self.startImageView?.snp.makeConstraints({ (make) in
            make.center.equalTo(self.snp.center)
            make.width.equalTo(100)
            make.height.equalTo(100)
        })
        
        self.titleLabel?.snp.makeConstraints({ (make) in
            make.top.equalTo((self.startImageView?.snp.bottom)!).offset(20)
            make.width.equalTo(SCREEN_WIDTH)
            make.height.equalTo(20)
        })
        
        
        
    }
    
    override func setSelected(_ selected: Bool, animated: Bool) {
        super.setSelected(selected, animated: animated)

        // Configure the view for the selected state
    }

}

控制器的代码

import UIKit
import AVKit
import AVFoundation

let SCREEN_WIDTH = UIScreen.main.bounds.size.width
let SCREEN_HEIGHT = UIScreen.main.bounds.size.height



class ViewController : UIViewController, UITableViewDataSource,UITableViewDelegate {

    lazy var tableView = UITableView()
    let array:Array<Any> = []
    var data = [
        
        video(image: "videoScreenshot01", title: "Introduce 3DS Mario", source: "Youtube - 06:32"),
        video(image: "videoScreenshot02", title: "Emoji Among Us", source: "Vimeo - 3:34"),
        video(image: "videoScreenshot03", title: "Seals Documentary", source: "Vine - 00:06"),
        video(image: "videoScreenshot04", title: "Adventure Time", source: "Youtube - 02:39"),
        video(image: "videoScreenshot05", title: "Facebook HQ", source: "Facebook - 10:20"),
        video(image: "videoScreenshot06", title: "Lijiang Lugu Lake", source: "Allen - 20:30")
        
    ]
    
    override func viewDidLoad() {
        super.viewDidLoad()
        self.tableView = UITableView(frame: CGRect(x: 0, y: 0,  SCREEN_WIDTH, height: SCREEN_HEIGHT), style: .plain)
        self.tableView.dataSource = self
        self.tableView.delegate = self
        self.tableView.rowHeight = 220;
        self.view.addSubview(tableView)

       
    }
    
    func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        return data.count
    }
    
    func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        let customeIdntifier = "videoCell"
        var cell = tableView.dequeueReusableCell(withIdentifier: customeIdntifier) as? VideoViewCell
        
        
        if cell == nil {
            cell = VideoViewCell.init(style: UITableViewCellStyle.default, reuseIdentifier: customeIdntifier)
        }
        
        let video = data[indexPath.row]
        cell?.titleLabel?.text = video.title
        cell?.picImageView?.image = UIImage.init(named: video.image)
        return cell!
    }
    
    func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
        let playViewContoller = AVPlayerViewController()
        var playerView = AVPlayer()
        
        let path = Bundle.main.path(forResource: "emoji zone", ofType: "mp4")
        
        playerView = AVPlayer(url: URL(fileURLWithPath: path!))
        
        playViewContoller.player = playerView
        
        self.present(playViewContoller, animated: true) {
            playViewContoller.player?.play()
        }
        
        
        
    }

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


}