Xamarin Forms view coordinates and Android view coordinates

Question

PREMISE: This Answer does NOT answer my question, here I ask HOW to solve this "conflict problem".

I noticed that coordinates of a view in Xamarin Forms are different from the coordinates of the same view taken in Android, something like view.X=150 (in Xamarin Forms) correspond to view.GetX()=900 (in Xamarin Android). This causes me a lot of problem, because I am trying to implement drag and drop using android custom renderer, in which I have to know the position of the drop zone (using myDestinationRect.Contains(myTouchX,myTouchY)), but since the position that I have in Forms is different from the position needed in the Android custom renderer, that become impossible for me. Is there a way to like "convert" forms coordinates to android coordinates? Or are there any other solutions?

PS: in iOS everything works fine, it seems that Forms and iOS use same coordinates system.

May be some dpi problem? – Lev Leontev Feb 17 '20 at 14:55 — Lev Leontev, Feb 17 '20 at 14:55

score 1 · Answer 1 · answered Feb 18 '20 at 06:19

Try to get the Device Density first,then *density to convert to android coordinates.

var mainDisplayInfo = DeviceDisplay.MainDisplayInfo;
var density = mainDisplayInfo.Density;
int XForms = view.X;
int XAndroid = XForms*density; //convert to android coordinates.

Xamarin Forms view coordinates and Android view coordinates

1 Answers1