go打包aar及flutter调用aar流程详解

#!/usr/bin/env bash
# 构建移动端脚本
CRTDIR=$(pwd)
# 判断是否有output文件夹
if [ ! -d "${CRTDIR}/output" ]; then
  mkdir ${CRTDIR}/output
fi
# gomobile bind [-target android|ios|iossimulator|macos|maccatalyst] [-bootclasspath <path>] [-classpath <path>] [-o output] [build flags] [package]
# gomobile bind ./kernel/
gomobile bind -target=android -o=./output/mobile.aar -ldflags '-s -w'  ./cmd/mobile

// Code generated by gobind. DO NOT EDIT.
// Java class mobile.Mobile is a proxy for talking to a Go program.
//
//   autogenerated by gobind -lang=java github.com/clz.skywalker/event.shop/kernal/cmd/mobile
package mobile;
import go.Seq;
public abstract class Mobile {
	static {
		Seq.touch(); // for loading the native library
		_init();
	}
	private Mobile() {} // uninstantiable
	// touch is called from other bound packages to initialize this package
	public static void touch() {}
	private static native void _init();
	public static native void startKernel(long port, long local, String mode, String dbPath, String logPath);
}

dependencies {
    // implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
    // implementation fileTree(dir: 'libs', include: ['*.jar', '*.aar'])
    // implementation files('libs/kernel.aar')
    implementation(name:'mobile',ext:'aar')
}

package github.com/ClzSkywalker;
import android.content.Intent;
import android.os.Bundle;
import androidx.annotation.NonNull;
import java.util.Objects;
import io.flutter.plugin.common.MethodChannel;
import io.flutter.embedding.android.FlutterActivity;
import io.flutter.embedding.engine.FlutterEngine;
import io.flutter.plugins.GeneratedPluginRegistrant;
// 引入go打包的aar库
import mobile.Mobile;
public class MainActivity extends FlutterActivity {
    // 约定通道的名称，flutter可以通过通道名调用对应的方法
    private static final String CHANNEL = "kernel.startKernel";
    private static boolean kernelIsRunning = false;
    @Override
    public void configureFlutterEngine(@NonNull FlutterEngine flutterEngine) {
      GeneratedPluginRegistrant.registerWith(flutterEngine);
      new MethodChannel(flutterEngine.getDartExecutor().getBinaryMessenger(), CHANNEL)
              .setMethodCallHandler(
                      (call, result) -> {
                          if (call.method.contentEquals("startKernel")) {
                            if (kernelIsRunning) {
                              result.success("");
                              return;
                            }
                            long port= Long.parseLong(Objects.requireNonNull(call.argument("port")).toString());
                              long local= Long.parseLong(Objects.requireNonNull(call.argument("local")).toString());
                              String mode= Objects.requireNonNull(call.argument("mode")).toString();
                              String dbPath= Objects.requireNonNull(call.argument("dbPath")).toString();
                              String logPath= Objects.requireNonNull(call.argument("logPath")).toString();
                              new Thread(() -> {
                                  // 调用aar中的方法
                                  Mobile.startKernel(port,local,mode,dbPath,logPath);
                              }).start();
                            kernelIsRunning=true;
                            result.success("");
                          }else{
                              result.notImplemented();
                          }
                      }
              );
  }
}

    static const channel = MethodChannel('kernel.startKernel');
    kernelMap['port'] = 4935;
    kernelMap['local'] = 0;
    if (kDebugMode) {
      kernelMap['mode'] = 'test';
    } else {
      kernelMap['mode'] = 'release';
    }
    kernelMap['dbPath'] = dirPath;
    kernelMap['logPath'] = logPath.path;
    await channel.invokeMethod<void>('startKernel', kernelMap);