Delphi XE5 Firemonkey：用于移动/ Win / OSX的单一代码库？

Question

Just starting to play with FM after almost 20 years of VCL, so please bear with me... What makes an XE5 application mobile vs. FM HD? I cannot add OSX target to a mobile project (even though Win32 works), and I cannot add iOS/Android target to a Win32/Win64/OSX project. From what I can tell the same units are referenced, so why can't I have a single project for all supported platforms?

Thanks!

Answer 1

You cannot add desktop mobile target to mobile. The main reason, because desktop platform have more space of screen and has another ideom of building UI. So, of course, you can make window UI on mobile device, but it is not conveniently for using and doesn't respond mobile UI Guildline doc. Also Apple guaranteed doens't apply your application into App Store.

However, you can create two project with one code base.

1. Create Mobile project
2. Create Desktop project
3. Separate buisness logic from UI
4. You can create custom form for each projects or use exists (Only add your common form to mobile or desktop projects).

Thank you

Answer 2

I cannot add OSX target to a mobile project (even though Win32 works), and I cannot add iOS/Android target to a Win32/Win64/OSX project.

Different project types have different backend dependences. It does not make sense to allow OSX in a mobile project, so it is disabled. It does not make sense to allow iOS/Android in a desktop project, so they are disabled. The only reason Win32 is allowed in a mobile app is to help facilitate local testing without using a device/emulator, but you should not deploy without doing some device/emulator tests first.