Application of Go language in Android system

The Go language can be widely used in the Android system and can be used to build Android Activities and Services for data processing and analysis, including: using the Go language in Android Activity: introducing the Go language library, creating Go language classes, and Register Go language classes in the AndroidManifest.xml file. Use Go language in Android Service: Create a Go language class and register the Go language class in the AndroidManifest.xml file. Use Go language for data processing and analysis: it can be used to build HTTP APIs, concurrently process tasks, and encode and decode binary data.

The application practice of Go language in Android system

With its high concurrency, high performance and cross-platform features, Go language It has broad application prospects in Android system development. This article will introduce the practical application of Go language in Android system, including using Go language in Android Activity, using Go language in Android Service, using Go language for data processing and analysis, etc.

Using Go language in Android Activity

To use Go language in Android Activity, you need to perform the following steps:

1. Introduce Go language library: maven { url 'https://github.com/gopherjs/gopherjs/releases/download/v0.12.54/gopherjs-compiler-0.12.54.pom' }

2. Create Go language class ：`go
   package main

   import (

    "github.com/gopherjs/gopherjs/js"

   )

   type Main struct {

    *js.Object

   }

   func (this Main) onCreate(savedInstanceState js.Object) {

    // 执行 onCreate 的操作

   }

3. Registered in the AndroidManifest.xml file Go language class: `xml
   

    android:name="com.example.myapp.GoActivity"
    android:label="@string/app_name">
    <intent-filter>
        <action android:name="android.intent.action.MAIN" />
        <category android:name="android.intent.category.LAUNCHER" />
    </intent-filter>

Using Go language in Android Service

To use Go language in Android Service, you need to perform the following steps:

1. Create Go language class: `go
   package main

   import (

    "github.com/gopherjs/gopherjs/js"

   )

   type Service struct {

    *js.Object

   }

   func (this Service) onStartCommand(intent js.Object, flags, startId int) {

    // 执行 onStartCommand 的操作

   }

2. Register the Go language class in the AndroidManifest.xml file: ` xml
   

    android:name="com.example.myapp.GoService"
    android:enabled="true"
    android:exported="true">
    <intent-filter>
        <action android:name="android.intent.action.FOO" />
    </intent-filter>

Use Go language for data processing and analysis

In the Android system, Go language can be used for data processing and analysis, for example:

1. Use gorilla/mux to build HTTP API to access and process data
2. Use x/sync/errgroup to process multiple data concurrently Processing tasks
3. Use github.com/golang/protobuf to encode and decode binary data to improve performance

Practical case

The following is a practical Android application using Go language Case:

Step 1: Create Android Project

Use Android Studio to create a new Android project.

Step 2: Introduce the Go language library

Introduce the Go language library in the app/build.gradle file:

    dependencies {
        implementation 'com.gopherjs:gopherjs-compiler:0.12.54'
    }

Step 3 :Create Go language class

Create the MainActivity.go file in the app/src/main/assets/go/com/example/myapp folder and write the following code:

package main

import (
    "github.com/gopherjs/gopherjs/js"
)

type MainActivity struct {
    *js.Object
}

func (this *MainActivity) onCreate(savedInstanceState *js.Object) {
    // 执行 onCreate 的操作
}

Step 4: Register the Go language class in the AndroidManifest.xml file

In the app/src/main/AndroidManifest.xml file, add the following code within the element:

    <activity
        android:name="com.example.myapp.MainActivity"
        android:label="@string/app_name">
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />
            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>

Step 5: Build and run the application

Build and run the application to see if the Go language classes are running properly.

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