SeekBar.IOnSeekBarChangeListener, seekBar can't run - xamarin

Question

A callback that notifies clients when the progress level has been changed. This includes changes that were initiated by the user through a touch gesture or arrow key/trackball as well as changes that were initiated programmatically.
Inside OnCreate
public class AudioPlayer : Activity,SeekBar.IOnSeekBarChangeListener
seekBar.SetOnSeekBarChangeListener (this);
seekBar.ProgressChanged+= (object sender, SeekBar.ProgressChangedEventArgs e) => {
int progress=(int)(utils.getProgressPercentage(player.CurrentPosition,player.Duration));
seekBar.Progress = progress;
};
public void OnStartTrackingTouch(SeekBar seekBar) {}
public void OnStopTrackingTouch(SeekBar seekBar) {}
public int getProgressPercentage(int currentDuration, int totalDuration)
{
int percentage;
int currentSeconds = (int)(currentDuration / 1000);
int totalSeconds = (int)(totalDuration / 1000);
//calculating percentage
percentage = (((int)currentSeconds) / totalSeconds) * 100;
return percentage;
}
While tracks are playing, seekBar still stops.

Answer 1

Think you want to do is create a timer which will update the seekBar like this:
Activity:
using System;
using Android.App;
using Android.Widget;
using Android.OS;
using Java.Lang;
using Android.Content;
using Android.Graphics.Drawables;
using Java.Util;
namespace PlayVideo
{
[Activity (Label = "PlayVideo", MainLauncher = true)]
public class Activity1 : Activity
{
VideoView videoView;
SeekBar seekBar;
System.Timers.Timer timer;
protected override void OnCreate (Bundle bundle)
{
base.OnCreate (bundle);
// Set our view from the "main" layout resource
SetContentView (Resource.Layout.Main);
videoView = FindViewById<VideoView> (Resource.Id.SampleVideoView);
videoView.SetMediaController(new MediaController(this));
videoView.SetVideoPath ($"android.resource://{PackageName}/{Resource.Raw.output2}");
videoView.Start ();
seekBar = FindViewById<SeekBar> (Resource.Id.seekBar);
seekBar.Max = videoView.Duration;
seekBar.StartTrackingTouch += (object sender, SeekBar.StartTrackingTouchEventArgs e) =>
{
timer.Enabled = false;
};
seekBar.StopTrackingTouch += (object sender, SeekBar.StopTrackingTouchEventArgs e) =>
{
videoView.SeekTo (e.SeekBar.Progress);
timer.Enabled = true;
};
UpdateProgressBar ();
}
private void UpdateProgressBar() {
timer = new System.Timers.Timer();
timer.Interval = 100;
timer.Elapsed += OnTimedEvent;
timer.Enabled = true;
}
private void OnTimedEvent(object sender, System.Timers.ElapsedEventArgs e)
{
seekBar.Progress = videoView.CurrentPosition;
seekBar.Max = videoView.Duration;
}
}
}
Layout:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<VideoView
android:id="#+id/SampleVideoView"
android:layout_width="fill_parent"
android:layout_height="fill_parent" />
<SeekBar
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:id="#+id/seekBar" />
</LinearLayout>
it will look like this: