Rust 库
您可以使用 rust_library
为 Android 创建一个新的 Rust 库。
在这里,我们声明了对两个库的依赖:
libgreeting
, 我们在下面进行了定义,libtextwrap
, 一个已经在 external/rust/crates/ 中提供的 crate。
hello_rust/Android.bp:
rust_binary {
name: "hello_rust_with_dep",
crate_name: "hello_rust_with_dep",
srcs: ["src/main.rs"],
rustlibs: [
"libgreetings",
"libtextwrap",
],
prefer_rlib: true, // Need this to avoid dynamic link error.
}
rust_library {
name: "libgreetings",
crate_name: "greetings",
srcs: ["src/lib.rs"],
}
hello_rust/src/main.rs:
//! Rust demo.
use greetings::greeting;
use textwrap::fill;
/// Prints a greeting to standard output.
fn main() {
println!("{}", fill(&greeting("Bob"), 24));
}
hello_rust/src/lib.rs:
//! Greeting library.
/// Greet `name`.
pub fn greeting(name: &str) -> String {
format!("Hello {name}, it is very nice to meet you!")
}
您可以像之前一样构建、推送和运行二进制文件:
m hello_rust_with_dep
adb push "$ANDROID_PRODUCT_OUT/system/bin/hello_rust_with_dep" /data/local/tmp
adb shell /data/local/tmp/hello_rust_with_dep
Hello Bob, it is very
nice to meet you!