{"id":21586,"date":"2024-01-04T11:06:26","date_gmt":"2024-01-04T03:06:26","guid":{"rendered":"https:\/\/www.edabao.net\/dabao\/?p=21586"},"modified":"2024-01-04T11:06:26","modified_gmt":"2024-01-04T03:06:26","slug":"rust%e5%bc%80%e5%8f%91%e5%ae%89%e5%8d%93app%e6%93%8d%e4%bd%9c%e6%96%b9%e6%b3%95","status":"publish","type":"post","link":"https:\/\/www.edabao.net\/dabao\/kaifaapp\/21586\/","title":{"rendered":"rust\u5f00\u53d1\u5b89\u5353app\u64cd\u4f5c\u65b9\u6cd5"},"content":{"rendered":"

Rust\u5f00\u53d1\u5b89\u5353APP\uff1a\u539f\u7406\u4e0e\u8be6\u7ec6\u4ecb\u7ecd<\/p>\n

Rust\u662f\u4e00\u79cd\u73b0\u4ee3\u591a\u7528\u9014\u7f16\u7a0b\u8bed\u8a00\uff0c\u56e0\u4e3a\u5176\u9ad8\u5b89\u5168\u6027\u548c\u6027\u80fd\u6df1\u53d7\u5e7f\u5927\u5f00\u53d1\u8005\u559c\u6b22\u3002\u5982\u679c\u4f60\u60f3\u4f7f\u7528Rust\u5f00\u53d1Android\u5e94\u7528\u7a0b\u5e8f\uff0c\u672c\u6559\u7a0b\u53ef\u4ee5\u5e2e\u52a9\u4f60\u4e86\u89e3\u5176\u539f\u7406\u53ca\u8be6\u7ec6\u8fc7\u7a0b\u3002<\/p>\n

\u4e00\u3001Rust\u5f00\u53d1\u5b89\u5353APP\u7684\u539f\u7406<\/p>\n

\u4f7f\u7528Rust\u7f16\u5199\u7684Android\u5e94\u7528\u7a0b\u5e8f\u901a\u5e38\u91c7\u7528JNI (Java Native Interface)\u4e0eAndroid\u7cfb\u7edf\u6253\u4ea4\u9053\u3002\u4f60\u53ef\u4ee5\u4f7f\u7528Rust\u7f16\u5199\u5e94\u7528\u7a0b\u5e8f\u6838\u5fc3\u529f\u80fd\uff0c\u5e76\u901a\u8fc7JNI\u4e0eJava\u5c42\u4ee3\u7801\u8fdb\u884c\u901a\u4fe1\uff0c\u4ece\u800c\u6784\u5efa\u4e00\u4e2a\u5b8c\u6574\u7684Android\u5e94\u7528\u7a0b\u5e8f\u3002<\/p>\n

\u4e8c\u3001\u8be6\u7ec6\u64cd\u4f5c\u6b65\u9aa4<\/p>\n

1. \u73af\u5883\u914d\u7f6e<\/p>\n

\u8981\u5f00\u59cb\u4f7f\u7528Rust\u5f00\u53d1Android\u5e94\u7528\u7a0b\u5e8f\uff0c\u9996\u5148\u786e\u4fdd\u4f60\u7684\u8ba1\u7b97\u673a\u4e0a\u5df2\u6b63\u786e\u5b89\u88c5\u4e86\u4ee5\u4e0b\u5de5\u5177\uff1a<\/p>\n

– Rust \u7f16\u7a0b\u8bed\u8a00\uff08https:\/\/www.rust-lang.org\/tools\/install\uff09<\/p>\n

– Android\u5f00\u53d1\u73af\u5883\uff08Android Studio: https:\/\/developer.android.com\/studio\/index.html\uff09<\/p>\n

– NDK (Native Development Kit) \uff08https:\/\/developer.android.com\/ndk\/guides\uff09<\/p>\n

2. \u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u5b89\u5353\u9879\u76ee<\/p>\n

\u4f7f\u7528Android Studio\u521b\u5efa\u4e00\u4e2a\u65b0\u7684Android\u9879\u76ee\uff0c\u9009\u62e9\u9002\u5f53\u7684Android\u5e94\u7528\u7a0b\u5e8f\u6a21\u677f\u3002<\/p>\n

3. \u65b0\u5efaRust\u5e93<\/p>\n

\u5728Android\u9879\u76ee\u6839\u76ee\u5f55\u4e0b\uff0c\u521b\u5efa\u4e00\u4e2aRust\u5de5\u7a0b\uff0c\u5c06\u5176\u547d\u540d\u4e3a\u201crust\u201d\uff1a<\/p>\n

“`bash<\/p>\n

$ cargo new –lib rust<\/p>\n

“`<\/p>\n

4. \u7f16\u8f91Cargo.toml\u6587\u4ef6<\/p>\n

\u6253\u5f00\u201crust\u201d\u6587\u4ef6\u5939\u4e0b\u7684Cargo.toml\u6587\u4ef6\uff0c\u6dfb\u52a0\u4ee5\u4e0b\u5185\u5bb9\uff1a<\/p>\n

“`<\/p>\n

[lib]<\/p>\n

crate-type = [“cdylib”]<\/p>\n

[dependencies]<\/p>\n

jni = “0.16.0”<\/p>\n

“`<\/p>\n

5. \u7f16\u5199Rust\u4ee3\u7801<\/p>\n

\u6253\u5f00\u201crust\u201d\u6587\u4ef6\u5939\u4e0b\u7684src\/lib.rs\u6587\u4ef6\uff0c\u5e76\u6dfb\u52a0\u4ee5\u4e0b\u5185\u5bb9\uff1a<\/p>\n

“`rust<\/p>\n

use jni::JNIEnv;<\/p>\n

use jni::objects::{JClass, JString};<\/p>\n

use jni::sys::jstring;<\/p>\n

#[no_mangle]<\/p>\n

pub extern “C” fn Java_com_example_project_MainActivity_hello(<\/p>\n

env: JNIEnv,<\/p>\n

_: JClass,<\/p>\n

greet: JString,<\/p>\n

) -> jstring {<\/p>\n

let hello = env.get_string(greet).expect(“Couldn’t get Java string!”);<\/p>\n

let response = format!(“Hello, {}!”, hello);<\/p>\n

let response = env.new_string(response).expect(“Couldn’t create Java string!”);<\/p>\n

response.into_inner()<\/p>\n

}<\/p>\n

“`<\/p>\n

\u6ce8\u610f\uff1a\u5176\u4e2d`Java_com_example_project_MainActivity_hello`\u8868\u793aJNI\u65b9\u6cd5\uff0c\u4f60\u9700\u8981\u6839\u636e\u81ea\u5df1\u7684\u9879\u76ee\u5305\u540d\u53caMainActivity\u547d\u540d\u81ea\u884c\u8c03\u6574\u3002<\/p>\n

6. \u7f16\u5199`build.rs`\u811a\u672c<\/p>\n

\u5728\u201crust\u201d\u76ee\u5f55\u4e0b\u521b\u5efa\u4e00\u4e2a\u540d\u4e3a\u201cbuild.rs\u201d\u7684\u6587\u4ef6\uff0c\u5e76\u8f93\u5165\u4ee5\u4e0b\u5185\u5bb9\uff1a<\/p>\n

“`rust<\/p>\n

use std::env;<\/p>\n

use std::fs::File;<\/p>\n

use std::io::Write;<\/p>\n

use std::path::Path;<\/p>\n

fn main() {<\/p>\n

let target = env::var(“TARGET”).unwrap();<\/p>\n

let output_dir = env::var(“OUT_DIR”).unwrap();<\/p>\n

let output_file = Path::new(&output_dir).join(“target_arch.rs”);<\/p>\n

let mut output = File::create(output_file).unwrap();<\/p>\n

if target.contains(“aarch64”) {<\/p>\n

write!(output, “pub const ARCH: &str = \\”{}\\”;”, “aarch64”).unwrap();<\/p>\n

} else if target.contains(“arm”) {<\/p>\n

write!(output, “pub const ARCH: &str = \\”{}\\”;”, “armeabi-v7a”).unwrap();<\/p>\n

} else if target.contains(“x86_64”) {<\/p>\n

write!(output, “pub const ARCH: &str = \\”{}\\”;”, “x86_64”).unwrap();<\/p>\n

} else if target.contains(“i686”) {<\/p>\n

write!(output, “pub const ARCH: &str = \\”{}\\”;”, “x86”).unwrap();<\/p>\n

} else {<\/p>\n

panic!(“Unsupported<\/p>\n

<\/figure>\n<\/p>\n

target architecture: {}”, target);<\/p>\n

}<\/p>\n

}<\/p>\n

“`<\/p>\n

7. \u66f4\u65b0Android\u9879\u76ee\u7684build.gradle\u6587\u4ef6<\/p>\n

\u5728\u9879\u76ee\u6839\u76ee\u5f55\u4e0b\u7684`build.gradle`\u6587\u4ef6\u4e2d\uff0c\u6dfb\u52a0\u4ee5\u4e0b\u5185\u5bb9\uff1a<\/p>\n

“`gradle<\/p>\n

…<\/p>\n

android {<\/p>\n

…<\/p>\n

sourceSets {<\/p>\n

main {<\/p>\n

jniLibs.srcDirs = [‘src\/main\/jniLibs’]<\/p>\n

}<\/p>\n

}<\/p>\n

}<\/p>\n

…<\/p>\n

task buildRust(type: Exec) {<\/p>\n

inputs.dir(“rust\/src”)<\/p>\n

inputs.file(“rust\/Cargo.toml”)<\/p>\n

outputs.dir(“src\/main\/jniLibs”)<\/p>\n

commandLine ‘cargo’, ‘build’, ‘–release’, ‘–target-dir’, ‘target’, ‘–target’, ‘aarch64-linux-android’<\/p>\n

commandLine ‘cargo’, ‘build’, ‘–release’, ‘–target-dir’, ‘target’, ‘–target’, ‘armv7-linux-androideabi’<\/p>\n

commandLine ‘cargo’, ‘build’, ‘–release’, ‘–target-dir’, ‘target’, ‘–target’, ‘x86_64-linux-android’<\/p>\n

commandLine ‘cargo’, ‘build’, ‘–release’, ‘–target-dir’, ‘target’, ‘–target’, ‘i686-linux-android’<\/p>\n

workingDir ‘.\/rust’<\/p>\n

}<\/p>\n

task copyJniLibs(type: Copy\u5b89\u5353app<\/a>) {<\/p>\n

dependsOn buildRust<\/p>\n

from(“rust\/target\/aarch64-linux-android\/release”) {<\/p>\n

include “*.so”<\/p>\n

into “lib\/arm64-v8a”<\/p>\n

}<\/p>\n

from(“rust\/target\/armv7-linux-androideabi\/release”) {<\/p>\n

include “*.so”<\/p>\n

into “lib\/armeabi-v7a”<\/p>\n

}<\/p>\n

from(“rust\/target\/x86_64-linux-android\/release”) {<\/p>\n

include “*.so”<\/p>\n

into “lib\/x86_64”<\/p>\n

}<\/p>\n

from(“rust\/target\/i686-linux-android\/release”) {<\/p>\n

include “*.so”<\/p>\n

into “lib\/x86”<\/p>\n

}<\/p>\n

into “src\/main\/jniLibs”<\/p>\n

}<\/p>\n

preBuild.dependsOn copyJniLibs<\/p>\n

“`<\/p>\n

8. \u5728Android\u5e94\u7528\u7a0b\u5e8f\u4e2d\u8c03\u7528Rust\u51fd\u6570<\/p>\n

\u5728MainActivity.java\u6587\u4ef6\u4e2d\uff0c\u6dfb\u52a0\u4ee5\u4e0b\u4ee3\u7801\uff1a<\/p>\n

“`java<\/p>\n

public class MainActivity extends AppCompatActivity {<\/p>\n

static {<\/p>\n

System.loadLibrary(“your_rust_lib_name”);<\/p>\n

}<\/p>\n

@Override<\/p>\n

protected void onCreate(Bundle savedInstanceState) {<\/p>\n

super.onCreat\u5b89\u5353app\u5f00\u53d1\u5de5\u5177<\/a>e(savedInstanceState);<\/p>\n

setContentView(R.layout.activity_main);<\/p>\n

String greeting = hello(“Rust”);<\/p>\n

Toast.makeText(this, greeting, Toast.LENGTH_LONG).show();<\/p>\n

}<\/p>\n

public native String hello(String name);<\/p>\n

}<\/p>\n

“`<\/p>\n

\u6ce8\u610f\uff1a`System.loadLibrary()`\u4e2d\u7684\u53c2\u6570\u786e\u4fdd\u4e0elib.rs\u4e2d\u7684\u5e93\u540d\u76f8\u540c\u3002<\/p>\n

\u73b0\u5728\uff0c\u4f60\u5df2\u7ecf\u5b8c\u6210\u4e86\u4e00\u4e2a\u4f7f\u7528Rust\u5f00\u53d1\u7684\u7b80\u5355Android\u5e94\u7528\u7a0b\u5e8f\u3002\u6839\u636e\u9700\u8981\uff0c\u4f60\u8fd8\u53ef\u4ee5\u7ee7\u7eed\u6269\u5c55\u5e94\u7528\u7a0b\u5e8f\uff0c\u5c06\u66f4\u591a\u7684\u6838\u5fc3\u529f\u80fd\u7528Rust\u7f16\u5199\u3002\u73b0\u5728\u4f60\u53ef\u4ee5\u5728Android\u6a21\u62df\u5668\u6216\u5b9e\u9645\u8bbe\u5907\u4e0a\u6d4b\u8bd5\u4f60\u7684\u5e94\u7528\u7a0b\u5e8f\uff0c\u770b\u770b\u6548\u679c\u5982\u4f55\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

Rust\u5f00\u53d1\u5b89\u5353APP\uff1a\u539f\u7406\u4e0e\u8be6\u7ec6\u4ecb\u7ecdRust\u662f\u4e00\u79cd\u73b0\u4ee3\u591a\u7528\u9014\u7f16\u7a0b\u8bed\u8a00\uff0c\u56e0\u4e3a\u5176\u9ad8\u5b89\u5168\u6027\u548c\u6027\u80fd\u6df1\u53d7\u5e7f\u5927\u5f00\u53d1\u8005\u559c\u6b22\u3002\u5982\u679c\u4f60\u60f3\u4f7f\u7528Rust\u5f00\u53d1Android\u5e94\u7528\u7a0b\u5e8f\uff0c\u672c\u6559\u7a0b\u53ef\u4ee5\u5e2e\u52a9\u4f60\u4e86\u89e3\u5176\u539f\u7406\u53ca\u8be6\u7ec6\u8fc7\u7a0b\u3002<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[26872,22,33,26871,54],"topic":[],"class_list":["post-21586","post","type-post","status-publish","format-standard","hentry","category-kaifaapp","tag-app","tag-22","tag-33","tag-capp","tag-54"],"_links":{"self":[{"href":"https:\/\/www.edabao.net\/dabao\/wp-json\/wp\/v2\/posts\/21586","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.edabao.net\/dabao\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.edabao.net\/dabao\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.edabao.net\/dabao\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.edabao.net\/dabao\/wp-json\/wp\/v2\/comments?post=21586"}],"version-history":[{"count":1,"href":"https:\/\/www.edabao.net\/dabao\/wp-json\/wp\/v2\/posts\/21586\/revisions"}],"predecessor-version":[{"id":21608,"href":"https:\/\/www.edabao.net\/dabao\/wp-json\/wp\/v2\/posts\/21586\/revisions\/21608"}],"wp:attachment":[{"href":"https:\/\/www.edabao.net\/dabao\/wp-json\/wp\/v2\/media?parent=21586"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.edabao.net\/dabao\/wp-json\/wp\/v2\/categories?post=21586"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.edabao.net\/dabao\/wp-json\/wp\/v2\/tags?post=21586"},{"taxonomy":"topic","embeddable":true,"href":"https:\/\/www.edabao.net\/dabao\/wp-json\/wp\/v2\/topic?post=21586"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}