initial commit

.gitignore

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+/target

Cargo.toml

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+[package]
+name = "egui_android_template"
+version = "0.1.0"
+edition = "2024"
+
+[dependencies]
+egui = { version = "0.33.2", default-features = false, features = [
+    "default_fonts",
+    "rayon",
+] }
+
+log = "0.4"
+
+[target.'cfg(not(target_os="android"))'.dependencies]
+eframe = { version = "0.33.2", default-features = false, features = [
+    "default_fonts",
+    "glow",
+    "wayland",
+    "x11",
+    "accesskit",
+] }
+
+[target.'cfg(target_os="android")'.dependencies]
+winit = { version = "0.30.12", features = ["android-native-activity"] }
+eframe = { version = "0.33.2", default-features = false, features = [
+    "default_fonts",
+    "glow",
+    "android-native-activity",
+] }
+
+android_logger = "0.13"
+android-activity = { version = "0.6.0", features = ["native-activity"] }
+
+
+[lib]
+crate-type = ["cdylib"]

README.md

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+Build on PC
+```bash
+cargo build
+```
+
+Build on android (using xbuild)
+```bash
+x build --platform android --arch arm64 --format apk --release
+```

src/gui/mod.rs

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+use eframe::{App, Frame, NativeOptions};
+use egui::{CentralPanel, Context};
+use std::error::Error;
+
+pub struct Application {}
+
+impl Application {
+    pub fn new() -> Self {
+        Application {}
+    }
+}
+
+impl App for Application {
+    fn update(&mut self, ctx: &Context, _frame: &mut Frame) {
+        CentralPanel::default().show(ctx, |_ui| {});
+        ctx.request_repaint();
+    }
+}
+
+pub fn run(options: NativeOptions) -> Result<(), Box<dyn Error>> {
+    match eframe::run_native(
+        "EGUI Android Example",
+        options,
+        Box::new(|_cc| Ok(Box::new(Application::new()))),
+    ) {
+        Ok(_) => Ok(()),
+        Err(err) => Err(err.into()),
+    }
+}

src/lib.rs

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+#![cfg(target_os = "android")]
+mod gui;
+
+use eframe::{HardwareAcceleration, NativeOptions};
+use egui::ViewportBuilder;
+use winit::platform::android::activity::AndroidApp;
+
+use std::error::Error;
+
+#[unsafe(no_mangle)]
+fn android_main(app: AndroidApp) -> Result<(), Box<dyn Error>> {
+    android_logger::init_once(
+        android_logger::Config::default().with_max_level(log::LevelFilter::Warn),
+    );
+
+    let opts = NativeOptions {
+        android_app: Some(app),
+        vsync: true,
+        centered: true,
+        hardware_acceleration: HardwareAcceleration::Preferred,
+
+        viewport: ViewportBuilder::default().with_app_id("com.example.egui"),
+
+        ..Default::default()
+    };
+
+    gui::run(opts)
+}

src/main.rs

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+#[cfg(not(target_os = "android"))]
+pub mod gui;
+
+use eframe::{HardwareAcceleration, NativeOptions};
+use egui::ViewportBuilder;
+use std::error::Error;
+
+fn main() -> Result<(), Box<dyn Error>> {
+    let opts = NativeOptions {
+        vsync: true,
+        centered: true,
+        hardware_acceleration: HardwareAcceleration::Preferred,
+
+        viewport: ViewportBuilder::default().with_app_id("com.example.egui"),
+
+        ..Default::default()
+    };
+
+    gui::run(opts)
+}