initial commit

src/gui/mod.rs

@@ -0,0 +1,29 @@
+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

@@ -0,0 +1,28 @@
+#![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

@@ -0,0 +1,20 @@
+#[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)
+}