Working on Android? (regarding latest version of imguI)

[playingoDEERUX]

Hey, uhh just a quick question actually:
Is this repository (the official repo of imgui) compatible with Android & Android SDK out of the box?

Thanks.

[PathogenDavid]

Short answer: Yes, but batteries are not included.

Dear ImGui its self is platform agnostic and depends on using an appropriate backend to handle platform-specific concerns. This repo contains a handful of generic backends, but you can also pretty easily make your own.

My understanding is that the SDL and and OpenGL3 backends can be used with Android, but I can't say I've ever tried it myself.

There was some talk of having an Android example that would work out of the box, but I don't believe it went anywhere.

It is worth noting that while Dear ImGui does work with touch-centric devices, its heritage definitely makes it more well-suited for mouse-centric devices. (For example, Dear ImGui does not support multi-touch #3711 and interacting with the soft keyboard can be difficult #3817 #3275)

[playingoDEERUX]

How do I get started? I have hooked a drawing function on a game which uses OpenGLES 2 and it now gets redirected to my call.

My first attempt was using imgui_impl_opengl3 since that one has OpenGLES 2 version integrated, then I also used imgui_impl_glfw however I start to see the first issues. I get weird errors like: fatal error: 'GL/glfw.h' file not found
#include <GL/glfw.h> or even if I change the directory so that it gets included, it then complains about glx.h not being found??!

Thanks in advance if you would have any idea. I am currently doing ImGui_ImplOpenGL3_Init(); however that will cause a crash without initialization of glfw.

[playingoDEERUX]

Check #3860 this person just apparently has the same issue on the latest version, it doesn't wanna let us introduce glfw with OpenGL3??!

[ocornut]

Note there's a native Android backend PR in the work #3446 which is likely to be merged soon.

[ocornut]

Update:

• The native backend + example was merged in WIP: Native Android backend + example #3446
• The SDL based example in Android + OpenGL ES 3 Example #421 has been revamped a few years ago and I forgot about it, ihmo using SDL would be ideal. You can refer to this example looking at "Files changed" (that is until the 69 commits are neatly squashed)

I think we can close this and we will aim at tweaking and merging the equivalent of #421 as well.