配置 golang 开发环境

略

安装并初始化 gomobile

go get golang.org/x/mobile/cmd/gomobile

gomobile init

创建 beego 项目, 参考 https://beego.me/quickstart

cd $GOPATH/src

bee new androidweb

# 创建 gomobile 文件

cd androidweb

mkdir androidweb

gedit androidweb.go

androidweb.go 的内容

package androidweb

import (

	"androidweb/controllers"

	_ "androidweb/routers"

	"github.com/astaxie/beego"

)

func Run(dir string) {

	beego.Router("/", &controllers.MainController{})

	beego.LoadAppConfig("ini", dir+"/conf/app.conf")

	beego.SetStaticPath("/static", dir+"/static")

	beego.BConfig.WebConfig.ViewsPath = dir + "/views"

	beego.Run()

}

生成 aar,

cd $GOPATH/src

gomobile bind -target=android androidweb/androidweb/

成功的话,会在 $GOPATH/src 目录下创建一个 androidweb.aar 文件

创建 android 项目,并添加权限

    <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />

    <uses-permission android:name="android.permission.INTERNET" />

将 beego 项目中的 conf static views 复制到 android 项目的 assets 中

导入前面生成的 androidweb.aar 文件

修改 MainActivity

import android.content.Context;

import android.content.res.AssetManager;

import android.net.wifi.WifiInfo;

import android.net.wifi.WifiManager;

import android.os.Bundle;

import android.support.v7.app.AppCompatActivity;

import android.widget.TextView;

import java.io.BufferedReader;

import java.io.File;

import java.io.FileOutputStream;

import java.io.IOException;

import java.io.InputStream;

import java.io.InputStreamReader;

import java.io.OutputStream;

import androidweb.Androidweb;

public class MainActivity extends AppCompatActivity {

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

        ((TextView) findViewById(R.id.textView)).setText("启动成功..." + "\n" +

                "IP: " + getIpAddress() + "\n" +

                appConf());

        copyFolder("conf");

        copyFolder("static");

        copyFolder("views");

        new Thread() {

            @Override

            public void run() {

                super.run();

                Androidweb.run(getFilesDir().getAbsolutePath());

            }

        }.start();

    }

    private String appConf() {

        BufferedReader reader = null;

        StringBuilder sb = new StringBuilder();

        try {

            reader = new BufferedReader(new InputStreamReader(getAssets().open("conf/app.conf")));

            // do reading, usually loop until end of file reading

            String mLine;

            while ((mLine = reader.readLine()) != null) {

                //process line

                sb.append(mLine + "\n");

            }

        } catch (IOException e) {

            //log the exception

        } finally {

            if (reader != null) {

                try {

                    reader.close();

                } catch (IOException e) {

                    //log the exception

                }

            }

        }

        return sb.toString();

    }

    private String getIpAddress() {

        WifiManager wm = (WifiManager) getApplicationContext().getSystemService(Context.WIFI_SERVICE);

        if (wm.getWifiState() == WifiManager.WIFI_STATE_ENABLED) {

            WifiInfo info = wm.getConnectionInfo();

            int hostip = info.getIpAddress();

            String ip = (hostip & 0xFF) + "." + ((hostip >> 8) & 0xFF) + "." + ((hostip >> 16) & 0xFF) + "." + ((hostip >> 24) & 0xFF);

            return ip;

        }

        return null;

    }

    private void copyFolder(String path) {

        AssetManager assetManager = getAssets();

        InputStream in = null;

        OutputStream out = null;

        File dir = new File(getFilesDir() + "/" + path);

        if (!dir.exists()) {

            dir.mkdirs();

        }

        try {

            String[] files = assetManager.list(path);

            for (String filename : files) {

                in = assetManager.open(path + "/" + filename);

                File outFile = new File(dir, filename);

                out = new FileOutputStream(outFile);

                copyFile(in, out);

            }

        } catch (IOException e) {

            e.printStackTrace();

        } finally {

            if (in != null) {

                try {

                    in.close();

                } catch (IOException e) {

                    e.printStackTrace();

                }

            }

            if (out != null) {

                try {

                    out.close();

                } catch (IOException e) {

                    e.printStackTrace();

                }

            }

        }

    }

    private void copyFile(InputStream in, OutputStream out) throws IOException {

        byte[] buffer = new byte[1024];

        int read;

        while ((read = in.read(buffer)) != -1) {

            out.write(buffer, 0, read);

        }

    }

}

启动 android 程序即可

本文来自：开源中国博客