how to do a button click in Xamarin Forms Android custom info window - google-maps

Question

In my Xamarin Forms Android project I am showing a Map using CustomMapRenderer. I am popping up a Info Window in Map screen and this info window has button name called "Call". I need to do a "OnCLick" button click operation for this button. I have googled it, but unfortunately I didn't come across any solutions. at last I have started to work on converting the Android Native code -Java into Xamarin Forms Android - c#, for this conversion I have been using this answers Google Maps Android API v2 - Interactive InfoWindow (like in original android google maps) . This converted code shows A field initializer cannot reference the non static field, method or property OnInfoWindowElemTouchListener.onClickConfirmed(view, marker) this Error inside Java.Lang.Runnable please help me to resolve the problem.
OnInfoWindowElemTouchListener.cs
using System.Threading.Tasks;
using Android.App;
using Android.Content;
using Android.Gms.Maps.Model;
using Android.Graphics.Drawables;
using Android.OS;
using Android.Views;
using Android.Views.Accessibility;
using Java.Lang;
namespace Hotel.Droid
{
public abstract class OnInfoWindowElemTouchListener : Java.Lang.Object
, View.IOnTouchListener
{
private View view;
private Drawable bgDrawableNormal;
private Drawable bgDrawablePressed;
private Handler handler = new Handler();
private Marker marker;
private static bool endPressStatus = false;
private bool pressed = false;
public OnInfoWindowElemTouchListener(View view, Drawable bgDrawableNormal, Drawable bgDrawablePressed)
{
this.view = this.view;
this.bgDrawableNormal = this.bgDrawableNormal;
this.bgDrawablePressed = this.bgDrawablePressed;
}
public OnInfoWindowElemTouchListener()
{
}
public void setMarker(Marker marker)
{
this.marker = this.marker;
}
public bool OnTouch(View vv, MotionEvent e)
{
if (0 <= e.GetX() && e.GetX() <= vv.Width && 0 <= e.GetY() && e.GetY() <= vv.Height)
{
switch (e.ActionMasked)
{
case MotionEventActions.Down:
startPress();
break;
// We need to delay releasing of the view a little so it shows the
// pressed state on the screen
case MotionEventActions.Up:
//handler.PostDelayed(ConfirmClickRunnable, 150);
Task.Factory.StartNew(() => onClickConfirmed(view, marker));
Task.Delay(150);
break;
case MotionEventActions.Cancel:
endPress();
break;
default:
break;
}
}
else {
// If the touch goes outside of the view's area
// (like when moving finger out of the pressed button)
// just release the press
endPress();
}
return false;
}
private void startPress()
{
if (!pressed)
{
pressed = true;
//handler.RemoveCallbacks(ConfirmClickRunnable);
view.SetBackgroundDrawable(bgDrawablePressed);
if ((marker != null))
{
marker.ShowInfoWindow();
}
}
}
public bool endPress()
{
if (pressed)
{
this.pressed = false;
handler.RemoveCallbacks(ConfirmClickRunnable);
view.SetBackgroundDrawable(bgDrawableNormal);
if ((marker != null))
{
marker.ShowInfoWindow();
}
endPressStatus = true;
return true;
}
else {
endPressStatus = false;
return false;
}
}
private Runnable ConfirmClickRunnable = new Java.Lang.Runnable(() =>
{
if (endPressStatus)
{
onClickConfirmed(view, marker);
}
});
/*private class RunnableAnonymousInnerClassHelper : Java.Lang.Object, Java.Lang.IRunnable
{
private readonly Context outerInstance;
public RunnableAnonymousInnerClassHelper(Context outerInstance)
{
this.outerInstance = outerInstance;
}
public void Run()
{
if (endPressStatus)
{
onClickConfirmed();
}
}
}*/
protected abstract void onClickConfirmed(View v, Marker marker);
}
}
Updated
I have implemented the Task.Factory.StartNew instead of Android Runnableand now I am stucking on the below lines. I am struggling on converting this below Java codes into C#since it is written by Anonymous class concept.
Java
this.infoButtonListener = new OnInfoWindowElemTouchListener(infoButton,
getResources().getDrawable(R.drawable.btn_default_normal_holo_light),
getResources().getDrawable(R.drawable.btn_default_pressed_holo_light))
{
#Override
protected void onClickConfirmed(View v, Marker marker) {
// Here we can perform some action triggered after clicking the button
Toast.makeText(MainActivity.this, marker.getTitle() + "'s button clicked!", Toast.LENGTH_SHORT).show();
}
};
this.infoButton.setOnTouchListener(infoButtonListener);
infoButton in code is Call button
C# - Please help me to resolve the problem by converting/using(How to use) the above java code

Answer 1

The solution is too complicated for this window. Please see chat room for step by step solution.
https://chat.stackoverflow.com/rooms/128847/discussion-between-jamal-and-yuri-s