CODEWITHSUNDEEP
androidxamarin.formsviewcoordinatescustom-renderer
Poli97
Poli97

Reputation: 304

Xamarin Forms view coordinates and Android view coordinates

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.

Upvotes: 0

Views: 285

Answers (1)

Leo Zhu
Leo Zhu

Reputation: 15021

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.

Upvotes: 1

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