How to write a program to display an image?

Question

Android

Android - Windows
I suppose that it will be necessary to write mainly in C and part in Java. What underwater? Any ideas? Or maybe someone does not mind to participate in the development?
Thank you very much in advance for any help
UPD: you need to display the phone screen on Windows

Answer 1

Android - Windows

wtf?
You already decide, android or Windows?
You just take and draw on the ImageView, what's the problem?

Answer 2

If you need cross-platforms, then immediately write to flutter.
Googled the output of images, cases for 2 minutes.

Answer 3

You download Delphi - RAD Studio CE
You create a cross-platform project. You throw the TImage component on the form, you collect under Windows, android or other platforms. No packages, no additional installations or settings. I installed the environment, created the project, built it, got the executable file. 5 minutes, taking into account the assembly for the required platforms. If we consider the installation time of the environment - 35 minutes.
Actually on. Ready project, without writing code