Kaiser1989 / android-ndk-rs

Rust bindings to the Android NDK

Rust on Android

• Raw FFI bindings to the NDK
• Safe abstraction of the bindings
• Startup code
• Everything for building apk's
• Build tool

Hello world

Cargo.toml

[lib]
crate-type = ["lib", "cdylib"]

Wraps main function using attribute macro ndk::glue::main:

src/lib.rs

#[cfg_attr(target_os = "android", ndk_glue::main(backtrace))]
pub fn main() {
    println!("hello world");
}

src/main.rs

fn main() {
    $crate::main();
}

cargo install cargo-apk
cargo apk run

Logging and stdout

Stdout is redirected to the android log api when using ndk-glue. Any logger that logs to stdout should therefore work.

Android logger

Android logger can be setup using feature "logger" and attribute macro like so:

src/lib.rs

#[cfg_attr(target_os = "android", ndk_glue::main(logger(debug, "my-tag")))]
pub fn main() {
    println!("hello world");
}

JNI

TODO: talk more about jni and add some examples

• jni, JNI bindings for Rust

Winit and glutin

TODO shameless plug

Flutter

TODO shameless plug