Hi @cristopheB

I'm assuming that your API has returned the image, and then converted the image to Base64 (a common way of passing images around as text). If this assumption is wrong, please clarify your case!

If my assumption is correct, then having received the image as text in a Base64 string, you can then decode it using:

   var byteArray = Convert.FromBase64String(base64text);  
then what you have is the same byte array as if you had opened the image file from disk and converted it to a byte array.    
So in this case you just need to convert it to a Stream:    
   Stream stream = new MemoryStream(byteArray);  
At this point, just pass the Stream to your image, I don't have the Xamarin.Android code at hand, but to illustrate the process using the Xamarin.Forms equivalent:    
   var byteArray = Convert.FromBase64String(base64text);  
   Stream stream = new MemoryStream(byteArray);  
   var imageSource = ImageSource.FromStream(()=>stream);  
   MyImage.Source = imageSource;  
											
Hello @Harrison of The North   ,    
thanks a lot for all explication and code that's nice    
well, the problem was the encoding of the image we follow what you said and now it's perfect !    

thanks