SeekBar won't run when media player are playing on xamarin android - xamarin

Question

The SeekBar widget is an interactive slider that allows the user to select one value from a range of values. As the user moves the slider left or right, the value of the SeekBar will change
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;
}
public void UpdatedTimerTask()
{
//Displaying time
//txtCurrentTimer.Text = utils.miliSecondsTotimer (player.CurrentPosition);
//txtTotalTimer.Text = utils.miliSecondsTotimer (player.Duration);
//Updating progress bar(seekbar)
int progress=(int)(utils.getProgressPercentage(player.CurrentPosition,player.Duration));
seekBar.Progress = progress;
}
void SeekBar_ProgressChanged (object sender, SeekBar.ProgressChangedEventArgs e)
{
UpdatedTimerTask ();
}
public void StartMedia(string url_string)
{
player = new MediaPlayer ();
seekBar.Progress = 0;
seekBar.Max = 100;
player.Reset ();
player.SetAudioStreamType (Stream.Music);
player.SetDataSource(url_string);
player.Prepare();
player.Start ();
imgPlayorPause.SetImageResource (Resource.Drawable.ic_pause_black_36dp);
UpdatedTimerTask ();
}
seekBar.SetOnSeekBarChangeListener (this); has some invalid argument.
SeekBar won't run when media player are playing.

Answer 1

You have two options:
SetOnSeekBarChangeListener()
If you want to use SetOnSeekBarChangeListener you have to implement IOnSeekBarChangeListener in the class of this (usually your activity. The disadvantage of this is, that you can only have one event listener.
[Activity]
public class MyActivity : Activity, SeekBar.IOnSeekBarChangeListener
{
protected override void OnCreate(Bundle bundle)
{
// ...
seekbar.SetOnSeekBarChangeListener(this);
}
public void OnProgressChanged(SeekBar seekBar, int progress, bool fromUser)
{
// do some stuff
}
public void OnStartTrackingTouch(SeekBar seekBar)
{
}
public void OnStopTrackingTouch(SeekBar seekBar)
{
}
}
ProgressChanged Event
Xamarin maps Java methods that are called like SetXyzListener to the event called Xyz.
If you want to use ProgressChanged you have to register your handler with seekbar.ProgressChanged += SeekbarOnProgressChanged. The disadvantage of this is, that you have to ensure to remove the handler with seekbar.ProgressChanged -= SeekbarOnProgressChanged when you do not need the event anymore. You should do this in the counterpart of the lifecycle method where you have added the handler. In the following example I used OnResume and OnPause.
[Activity]
public class MyActivity : Activity
{
protected override void OnCreate(Bundle bundle)
{
base.OnCreate(bundle);
// ...
}
protected override void OnResume()
{
base.OnResume();
seekbar.ProgressChanged += SeekbarOnProgressChanged;
}
protected override void OnPause()
{
seekbar.ProgressChanged -= SeekbarOnProgressChanged;
base.OnPause();
}
private void SeekbarOnProgressChanged(object sender, SeekBar.ProgressChangedEventArgs progressChangedEventArgs)
{
// do some stuff
}
}