将视频背景添加到iOS应用注册,如Instagram和Vine

Question

我创建了一个加载的应用程序,并使用swift登录/注册页面等.目前我有一个图像作为背景,但想添加代码,所以有一个gif/mov在后台播放,如藤蔓或Instagram等应用程序.

如何将视频与我当前的代码集成？我也是新手,所以一直在关注教程.此外,如果有人知道如何删除解析徽标,这也会有所帮助.

视频出现在我的故事板上的UI前面!如何让它们出现在背景GIF前面？

下面是我目前为登录视图控制器提供的代码.

import UIKit
import Foundation

class SignInViewController: UIViewController, UITextFieldDelegate {

@IBOutlet weak var userName: UITextField!
@IBOutlet weak var password: UITextField!

@IBOutlet weak var errorLabel: UILabel!

override func viewDidLoad() {

       super.viewDidLoad()

    let filePath = NSBundle.mainBundle().pathForResource("beachwater", ofType: "gif")
    let gif = NSData(contentsOfFile: filePath!)

    let webViewBG = UIWebView(frame: self.view.frame)
    webViewBG.loadData(gif!, MIMEType: "image/gif", textEncodingName: "UTF-8", baseURL: NSURL(string: "")!)
    webViewBG.userInteractionEnabled = false;
    self.view.addSubview(webViewBG)


    userName.delegate = self
    password.delegate = self
}


@IBAction func signInTouched(sender: UIButton) {

    let signin = SignIn(user: userName.text!, pass: password.text!)

    do {
        try signin.signInUser()
        self.dismissViewControllerAnimated(true, completion: nil)


    } catch let error as Error {
        errorLabel.text = error.description
    } catch {
        errorLabel.text = "Sorry something went\n wrong please try again"
    }

}

override func touchesBegan(touches: Set<UITouch>, withEvent event: UIEvent?) {
    self.view.endEditing(true)

}

}

Answer 1

以下代码允许您为视图控制器添加视频背景.

它是写入Swift并播放mp4视频文件.

import AVFoundation

class VideoBackgroundController: UIViewController {
    var avPlayer: AVPlayer!
    var avPlayerLayer: AVPlayerLayer!
    var paused: Bool = false

    override func viewDidLoad() {

        let theURL = NSBundle.mainBundle().URLForResource("my_video_file", withExtension: "mp4")

        avPlayer = AVPlayer(URL: theURL!)
        avPlayerLayer = AVPlayerLayer(player: avPlayer)
        avPlayerLayer.videoGravity = AVLayerVideoGravityResizeAspectFill
        avPlayer.volume = 0
        avPlayer.actionAtItemEnd = AVPlayerActionAtItemEnd.None

        avPlayerLayer.frame = view.layer.bounds
        view.backgroundColor = UIColor.clearColor();
        view.layer.insertSublayer(avPlayerLayer, atIndex: 0)

        NSNotificationCenter.defaultCenter().addObserver(self,
            selector: "playerItemDidReachEnd:",
            name: AVPlayerItemDidPlayToEndTimeNotification,
            object: avPlayer.currentItem)
    }

    func playerItemDidReachEnd(notification: NSNotification) {
        let p: AVPlayerItem = notification.object as! AVPlayerItem
        p.seekToTime(kCMTimeZero)
    }

    override func viewDidAppear(animated: Bool) {
        super.viewDidDisappear(animated)
        avPlayer.play()
        paused = false
    }

    override func viewDidDisappear(animated: Bool) {
        super.viewDidDisappear(animated)
        avPlayer.pause()
        paused = true
    }
}

为了Swift 3.

import AVFoundation

class VideoBackgroundController: UIViewController {
    var avPlayer: AVPlayer!
    var avPlayerLayer: AVPlayerLayer!
    var paused: Bool = false

    override func viewDidLoad() {

        let theURL = Bundle.main.url(forResource:"my_video_file", withExtension: "mp4")

        avPlayer = AVPlayer(url: theURL!)
        avPlayerLayer = AVPlayerLayer(player: avPlayer)
        avPlayerLayer.videoGravity = AVLayerVideoGravityResizeAspectFill
        avPlayer.volume = 0
        avPlayer.actionAtItemEnd = .none

        avPlayerLayer.frame = view.layer.bounds
        view.backgroundColor = .clear
        view.layer.insertSublayer(avPlayerLayer, at: 0)

        NotificationCenter.default.addObserver(self,
                                           selector: #selector(playerItemDidReachEnd(notification:)),
                                           name: NSNotification.Name.AVPlayerItemDidPlayToEndTime,
                                           object: avPlayer.currentItem)
    }

    func playerItemDidReachEnd(notification: Notification) {
        let p: AVPlayerItem = notification.object as! AVPlayerItem
        p.seek(to: kCMTimeZero)
    }

    override func viewDidAppear(_ animated: Bool) {
        super.viewDidAppear(animated)
        avPlayer.play()
        paused = false
    }

    override func viewDidDisappear(_ animated: Bool) {
        super.viewDidDisappear(animated)
        avPlayer.pause()
        paused = true
    }
}