How to remove all listeners added with addTextChangedListener

Question

I have a ListView where each row has an EditText control. I want to add a TextChangedListener to each row; one that contains extra dat

Answer 1

I had the same problem with xamarin/C# and I wrote for this a class to manage click events inside a ListView where the item view will be "recycled":

 public class ViewOnClickEventHandler: Java.Lang.Object
 {
    private List EventList { get; set; }

    public void SetOnClickEventHandler(View view, EventHandler eventHandler)
    {
        if (view.Tag != null)
        {
            ViewOnClickEventHandler holder = ((ViewOnClickEventHandler)view.Tag);

            foreach (EventHandler evH in holder.EventList)
                view.Click -= evH;

            for (int i = 0; i < holder.EventList.Count; i++)
                holder.EventList[i] = null;

            holder.EventList.Clear();
        }

        EventList = new List();
        EventList.Add(eventHandler);
        view.Click += eventHandler;
        view.Tag = this;
    }
}

You can use it in your ListView BaseAdapter GetItem method this way:

       TextView myTextView = convertView.FindViewById(Resource.Id.myTextView);

        ViewOnClickEventHandler onClick = new ViewOnClickEventHandler();
        onClick.SetOnClickEventHandler(myTextView, new EventHandler(delegate (object sender, EventArgs e)
        {
            // Do whatever you want with the click event
        }));

The ViewOnClickEventHandler class will care about multiple events on your textview. You can also change the class for textchange events. It's the same princip. I hope this will help.

bye, nxexo007