Tanja-4732 / egui_android

Messing about with egui on Android

egui demo app for mobile

FYI this is just an experiment, based on the work of others;
I didn't make the vast majority of this code, but the section on prerequisites may be very useful to you.

See

• https://github.com/tauri-apps/cargo-mobile2
• https://github.com/gfx-rs/wgpu#supported-platforms
• https://github.com/tauri-apps/wry/blob/dev/MOBILE.md

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This is an example based on agdk-egui example, using egui, winit and wgpu to run egui_demo_app.

To run this on desktop, just do cargo run like normal! For mobile, use cargo android run and cargo apple run respectively (or use cargo android open and cargo apple open to open in Android Studio and Xcode respectively).

Development

Desktop

Simply cargo run

Android

Just run cargo android init to generate the Android project, then cargo android run to run it, assuming you have the Android NDK and SDK installed (see below).

Prerequisites

The following guide is based on https://github.com/tauri-apps/wry/blob/dev/MOBILE.md, as seen on 2023-11-01 05:29:29.

1. Set env vars

   sudo pacman -S jdk-openjdk
   export $NDK_HOME=$HOME/Android/Sdk/ndk/25.0.8775105
   export $ANDROID_HOME=$HOME/Android/Sdk
   export $JAVA_HOME=/usr/lib/jvm/java-19-amazon-corretto

2. Set the Java version

   sudo archlinux-java set java-19-amazon-corretto

3. Use Android Studio to install the following
   • Android Sdk Platform 33
   • Android SDK Platform-Tools
   • NDK (Side by side) 25.0.8775105
   • Android SDK Build-Tools 33.0
   • Android SDK Command-line Tools
     (hit the details button to see all version numbers)
4. Install the rust toolchain

   rustup target add aarch64-linux-android armv7-linux-androideabi i686-linux-android x86_64-linux-android

5. Install cargo-mobile (2)

   cargo install --git https://github.com/tauri-apps/cargo-mobile2

iOS

Legend has it you can run cargo apple run and it may work.
But that requires macOS, so what gives.