Add Playback Slider to AVPlayer. Example In Swift.

In this sample Swift code, you will learn how to add a playback slider to AVPlayer so that users can start playing music anywhere. The following example code relates to the following:

• Create AVPlayer and AVPlayerItem,
• Programmatically create a UIB button,
• Create an AVPlayerLayer and add it as a subviewer,
• The action buttons for pausing and playing music are controlled by a rotary knob,
• Add UISlider as a subview,
• UISlider button to change the value of the event,
• Set the duration of the music file in seconds,
• Set the maximum value of UISlider to the duration of the music file in seconds.

Play slideshow Example

UIKit
import of the ViewController from the AVFoundation
class: UIViewController.

var player:AVPlayer?
var playerItem:AVPlayerItem ?
var playButton:UIB button ?

override viewDidLoad() {
super.viewDidLoad()
}

Replace the viewWillAppear(_ animated : Bool) {
super.viewWillAppear(animated))

let url = URL(string: https://s3.amazonaws.com/kargopolov/kukushka.mp3)
let playerItem:AVPlayerItem = AVPlayerItem(url: url!)
player = AVPlayer(playerItem: playerItem)

let playerLayer=AVPlayerLayer(player : player !)
playerLayer.frame=CGRect(x:0, y:0, width:10, height:50)
self.view.layer.addSublayer(playerLayer)

playButton = UIB button (type : UIB button.ButtonType.system) if UIB button
leaves xPostion: CGFloat = 50
let yPostion: CGFloat = 100
let buttonWidth:CGFloat = 150
let buttonHeight:CGFloat = 45

playButton !.frame = CGRect(x:xPostion, y:yPostion, width:buttonWidth, height:buttonHeight)
playButton !.backgroundColor = UIColor.lightGray
playButton !.setTitle(Play, for: UIControl.State.normal)
playButton !.tintColor = UIColor.black
//playButton !.addTarget(self, action: Selector(playButtonTapped:), for: .touchUpInside)
playButton !.addTarget(self, action: #selector(self.playButtonTapped(_:)), for: .touchUpInside)

self.view.addSubview(playButton!)

// Add a playback cursor

let playbackSlider = UISlider(frame:CGRect(x:10, y:300, width:300, height:20))
playbackSlider.minimumValue = 0

period allowed: CMTime = playerItem.asset.duration
let seconds : Float64 = CMTimeGetSeconds (Duration)

playbackSlider.maximumValue = Float(seconds)
playbackSlider.isContinuous = true
playbackSlider.tintColor = UIColor.green

playbackSlider.addTarget (self, action: #selector(self.playbackSliderValueChanged(_:)), for: .valueChanged)
// playbackSlider.addTarget (self, action: playbackSliderValueChanged:, forControlEvents: .ValueChanged)
self.view.addSubview(playbackSlider)

}

@objc-function-displaySliderValueChanged(_displaySlider:UISlider)
{

never mind the seconds: Int64 = Int64 (playbackSlider.value)
let targetTime: CMTime = CMTimeMake (value: seconds, time scale: 1)

player !.seek(to : targetTime)

if player !.rate == 0
{
player ?.play()
}
}

@objc function playButtonTapped(_ sender:UIB button)
{
if player ?.rate == 0
{
player !.play()
//playButton !.setImage(UIImage(named: player_control_pause_50px.png), forState : UIControlState.Normal)
playButton!setTitle(Pause, for: UIControl.State.Normal)
} else {
player !.pause()
//playButton !.setImage(UIImage(named: player_control_play_50px.png), forState : UIControlState.Normal)
playButton !.setTitle(Play, for: UIControl.State.Normal)
}
}

}

For more information on Swift code examples and tutorials, see the Swift code examples page on this site.

Written by Sergei Kargopolov

Related Tags:

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