Hi all I developed xamarin media player by help of this link its working perfectly https://docs.microsoft.com/en-us/xamarin/xamarin-forms/app-fundamentals/custom-renderer/video-player/ but I want to know how to capture an event when user change position of the seek-bar. please Help
Thanks in advance
In Android
Because the demo of link used MediaControllerin VideoPlayerRenderer.cs, MediaController do not provide method about ScrollChangeListener.
https://developer.android.com/reference/android/widget/MediaController#public-methods
Normaly, we should create a custom SeekBarfor VideoView, then add the ScrollChangeListener.
Becuase create a custom SeekBar is a little complicated, we can use context.Resources.GetIdentifier("mediacontroller_progress", "id", "android"); to get the SeekBar of mediacontroller by ID, then set the SetOnSeekBarChangeListener as well.
int seekbarId = context.Resources.GetIdentifier("mediacontroller_progress", "id", "android");
SeekBar seekBar = mediaController.FindViewById<SeekBar>(seekbarId);
seekBar.SetOnSeekBarChangeListener(new MySeekBarChangeListener());
Please Note:the instantiation of the SeekBar must occur in the VideoView.onPrepared(..) Callback method.
Here is running GIF.
Here are all of code about VideoPlayerRenderer
[assembly: ExportRenderer(typeof(FormsVideoLibrary.VideoPlayer),
typeof(FormsVideoLibrary.Droid.VideoPlayerRenderer))]
namespace FormsVideoLibrary.Droid
{
public class VideoPlayerRenderer : ViewRenderer<VideoPlayer, ARelativeLayout>
{
VideoView videoView;
MediaController mediaController; // Used to display transport controls
bool isPrepared;
Context context;
public VideoPlayerRenderer(Context context) : base(context)
{
this.context = context;
}
protected override void OnElementChanged(ElementChangedEventArgs<VideoPlayer> args)
{
base.OnElementChanged(args);
if (args.NewElement != null)
{
if (Control == null)
{
// Save the VideoView for future reference
videoView = new VideoView(Context);
// Put the VideoView in a RelativeLayout
ARelativeLayout relativeLayout = new ARelativeLayout(Context);
relativeLayout.AddView(videoView);
// Center the VideoView in the RelativeLayout
ARelativeLayout.LayoutParams layoutParams =
new ARelativeLayout.LayoutParams(LayoutParams.MatchParent, LayoutParams.MatchParent);
layoutParams.AddRule(LayoutRules.CenterInParent);
videoView.LayoutParameters = layoutParams;
// Handle a VideoView event
videoView.Prepared += OnVideoViewPrepared;
SetNativeControl(relativeLayout);
}
SetAreTransportControlsEnabled();
SetSource();
args.NewElement.UpdateStatus += OnUpdateStatus;
args.NewElement.PlayRequested += OnPlayRequested;
args.NewElement.PauseRequested += OnPauseRequested;
args.NewElement.StopRequested += OnStopRequested;
}
if (args.OldElement != null)
{
args.OldElement.UpdateStatus -= OnUpdateStatus;
args.OldElement.PlayRequested -= OnPlayRequested;
args.OldElement.PauseRequested -= OnPauseRequested;
args.OldElement.StopRequested -= OnStopRequested;
}
}
protected override void Dispose(bool disposing)
{
if (Control != null && videoView != null)
{
videoView.Prepared -= OnVideoViewPrepared;
}
if (Element != null)
{
Element.UpdateStatus -= OnUpdateStatus;
}
base.Dispose(disposing);
}
void OnVideoViewPrepared(object sender, EventArgs args)
{
isPrepared = true;
int seekbarId = context.Resources.GetIdentifier("mediacontroller_progress", "id", "android");
SeekBar seekBar = mediaController.FindViewById<SeekBar>(seekbarId);
seekBar.SetOnSeekBarChangeListener(new MySeekBarChangeListener());
((IVideoPlayerController)Element).Duration = TimeSpan.FromMilliseconds(videoView.Duration);
}
protected override void OnElementPropertyChanged(object sender, PropertyChangedEventArgs args)
{
base.OnElementPropertyChanged(sender, args);
if (args.PropertyName == VideoPlayer.AreTransportControlsEnabledProperty.PropertyName)
{
SetAreTransportControlsEnabled();
}
else if (args.PropertyName == VideoPlayer.SourceProperty.PropertyName)
{
SetSource();
}
else if (args.PropertyName == VideoPlayer.PositionProperty.PropertyName)
{
if (Math.Abs(videoView.CurrentPosition - Element.Position.TotalMilliseconds) > 1000)
{
videoView.SeekTo((int)Element.Position.TotalMilliseconds);
}
}
}
void SetAreTransportControlsEnabled()
{
if (Element.AreTransportControlsEnabled)
{
mediaController = new MediaController(Context);
mediaController.SetMediaPlayer(videoView);
videoView.SetMediaController(mediaController);
}
else
{
videoView.SetMediaController(null);
if (mediaController != null)
{
mediaController.SetMediaPlayer(null);
mediaController = null;
}
}
}
void SetSource()
{
isPrepared = false;
bool hasSetSource = false;
if (Element.Source is UriVideoSource)
{
string uri = (Element.Source as UriVideoSource).Uri;
if (!String.IsNullOrWhiteSpace(uri))
{
videoView.SetVideoURI(Android.Net.Uri.Parse(uri));
hasSetSource = true;
}
}
else if (Element.Source is FileVideoSource)
{
string filename = (Element.Source as FileVideoSource).File;
if (!String.IsNullOrWhiteSpace(filename))
{
videoView.SetVideoPath(filename);
hasSetSource = true;
}
}
else if (Element.Source is ResourceVideoSource)
{
string package = Context.PackageName;
string path = (Element.Source as ResourceVideoSource).Path;
if (!String.IsNullOrWhiteSpace(path))
{
string filename = Path.GetFileNameWithoutExtension(path).ToLowerInvariant();
string uri = "android.resource://" + package + "/raw/" + filename;
videoView.SetVideoURI(Android.Net.Uri.Parse(uri));
hasSetSource = true;
}
}
if (hasSetSource && Element.AutoPlay)
{
videoView.Start();
}
}
// Event handler to update status
void OnUpdateStatus(object sender, EventArgs args)
{
VideoStatus status = VideoStatus.NotReady;
if (isPrepared)
{
status = videoView.IsPlaying ? VideoStatus.Playing : VideoStatus.Paused;
}
((IVideoPlayerController)Element).Status = status;
// Set Position property
TimeSpan timeSpan = TimeSpan.FromMilliseconds(videoView.CurrentPosition);
((IElementController)Element).SetValueFromRenderer(VideoPlayer.PositionProperty, timeSpan);
}
// Event handlers to implement methods
void OnPlayRequested(object sender, EventArgs args)
{
videoView.Start();
}
void OnPauseRequested(object sender, EventArgs args)
{
videoView.Pause();
}
void OnStopRequested(object sender, EventArgs args)
{
videoView.StopPlayback();
}
}
internal class MySeekBarChangeListener : Java.Lang.Object, SeekBar.IOnSeekBarChangeListener
{
public void OnProgressChanged(SeekBar seekBar, int progress, bool fromUser)
{
var on = "ss";
}
public void OnStartTrackingTouch(SeekBar seekBar)
{
var on = "ss";
}
public void OnStopTrackingTouch(SeekBar seekBar)
{
}
}
}
