Click an Item -hold- and swipe to an other site - xamarin

Question

If an object is clicked, the next page should not be called immediately. But the click should remain on the object until you scroll through a wipe to the next page.
How can it hold the click command on an Item?
How can it swipe from the clicked Item to an other Page?
Update
Click one item > OnHold> swipe from the holded item to the left and right.
This is the actual behavior:
private int index = -1;
break;
}
return true;
}
}

Answer 1

To highlight the item when it is clicked, you can set background color to the item's view, to perform a swipe gesture for each item, I think you will need to implement IOnTouchListener for each item. Here I created an adapter to implement this feature:
public class LVAdapter : BaseAdapter<ListItemModel>, View.IOnTouchListener
{
private List<ListItemModel> items = new List<ListItemModel>();
private Activity context;
private int index = -1;
public enum SwipeAction
{
LR, // Left to Right
RL, // Right to Left
TB, // Top to bottom
BT, // Bottom to Top
None // when no action was detected
}
private int MIN_DISTANCE = 100;
private float downX, downY, upX, upY;
private SwipeAction maction = SwipeAction.None;
public LVAdapter(Activity context, List<ListItemModel> items) : base()
{
this.context = context;
this.items = items;
}
public override ListItemModel this[int position]
{
get { return items[position]; }
}
public override int Count
{
get { return items.Count; }
}
public override long GetItemId(int position)
{
return position;
}
private void SetSelectedItem(int position)
{
index = position;
NotifyDataSetChanged();
}
private class MyViewHolder : Java.Lang.Object
{
public TextView Name { get; set; }
public TextView Description { get; set; }
public int index { get; set; }
}
public override View GetView(int position, View convertView, ViewGroup parent)
{
MyViewHolder holder = null;
var view = convertView;
if (view != null)
holder = view.Tag as MyViewHolder;
if (holder == null)
{
holder = new MyViewHolder();
view = context.LayoutInflater.Inflate(Resource.Layout.ItemCell, null);
holder.Name = view.FindViewById<TextView>(Resource.Id.nametxt);
holder.Description = view.FindViewById<TextView>(Resource.Id.detailtxt);
holder.index = position;
view.Tag = holder;
}
holder.Name.Text = items[position].Name;
holder.Description.Text = items[position].Description;
if (index != -1 && position == index)
{
holder.Name.SetBackgroundColor(Android.Graphics.Color.Red);
holder.Description.SetBackgroundColor(Android.Graphics.Color.Pink);
}
else
{
holder.Name.SetBackgroundColor(Android.Graphics.Color.RoyalBlue);
holder.Description.SetBackgroundColor(Android.Graphics.Color.SeaGreen);
}
view.SetOnTouchListener(this);
return view;
}
public bool OnTouch(View v, MotionEvent e)
{
switch (e.Action)
{
case MotionEventActions.Down:
downX = e.GetX();
downY = e.GetY();
maction = SwipeAction.None;
break;
case MotionEventActions.Move:
upX = e.GetX();
upY = e.GetY();
var deltaX = downX - upX;
var deltaY = downY - upY;
if (Math.Abs(deltaX) > MIN_DISTANCE)
{
if (deltaX < 0)
{
maction = SwipeAction.LR;
}
else if (deltaX > 0)
{
maction = SwipeAction.RL;
}
return true;
}
else if (Math.Abs(deltaY) > MIN_DISTANCE)
{
if (deltaY < 0)
{
maction = SwipeAction.TB;
}
else if (deltaY > 0)
{
maction = SwipeAction.BT;
}
return false;
}
break;
case MotionEventActions.Up:
var holder = v.Tag as MyViewHolder;
if (maction == SwipeAction.None)
{
SetSelectedItem(holder.index);
}
else if (maction == SwipeAction.LR | maction == SwipeAction.RL)
{
if (holder.index == index)
context.StartActivity(typeof(Activity1));
}
break;
}
return true;
}
}
The ListItemModel is quite simple by my side:
public class ListItemModel
{
public string Name { get; set; }
public string Description { get; set; }
}
You can try to modify the model and holder as you need.