golang如何使用gomobile进行Android开发

Golang使用Gomobile进行Android开发攻略

Gomobile是一个用于在Go语言中编写和构建移动应用程序的工具。它允许开发人员使用Go语言编写Android应用程序，并将其编译为可在Android设备上运行的原生代码。以下是使用Gomobile进行Android开发的详细攻略。

步骤1：安装Gomobile

首先，您需要安装Gomobile工具。您可以通过以下命令在命令行中安装Gomobile：

$ go install golang.org/x/mobile/cmd/gomobile

步骤2：初始化Gomobile

在安装完成后，您需要初始化Gomobile。在命令行中运行以下命令：

$ gomobile init

这将设置Gomobile所需的环境变量和文件。

步骤3：创建Android项目

接下来，您需要创建一个Android项目。在命令行中运行以下命令：

$ gomobile init -ndk <path_to_ndk>

其中<path_to_ndk>是您的Android NDK的路径。这将创建一个Android项目的基本结构。

步骤4：编写Go代码

在创建Android项目后，您可以开始编写Go代码。在项目的main.go文件中，您可以编写您的应用程序逻辑。以下是一个简单的示例：

package main

import (
\t\"fmt\"
\t\"golang.org/x/mobile/app\"
\t\"golang.org/x/mobile/event\"
\t\"golang.org/x/mobile/gl\"
)

func main() {
\tapp.Main(func(a app.App) {
\t\tvar glctx gl.Context
\t\tfor e := range a.Events() {
\t\t\tswitch e := app.Filter(e).(type) {
\t\t\tcase app.StartEvent:
\t\t\t\tglctx, _ = e.DrawContext.(gl.Context)
\t\t\tcase app.DrawEvent:
\t\t\t\tonDraw(glctx)
\t\t\t\ta.Publish()
\t\t\t\ta.Send(e)
\t\t\tcase app.StopEvent:
\t\t\t\t// Clean up resources here
\t\t\t}
\t\t}
\t})
}

func onDraw(glctx gl.Context) {
\tglctx.ClearColor(1, 0, 0, 1)
\tglctx.Clear(gl.COLOR_BUFFER_BIT)
\tfmt.Println(\"Drawing on Android device\")
}

步骤5：构建和部署应用程序

完成编写Go代码后，您可以使用以下命令构建和部署应用程序：

$ gomobile build -target=android

这将生成一个名为<project_name>.apk的Android应用程序文件。

示例1：显示Toast消息

以下是一个示例，演示如何在Golang中使用Gomobile显示Toast消息：

```go
package main

import (
\t\"fmt\"
\t\"golang.org/x/mobile/app\"
\t\"golang.org/x/mobile/event\"
\t\"golang.org/x/mobile/gl\"
\t\"golang.org/x/mobile/exp/app/debug\"
\t\"golang.org/x/mobile/exp/app/debug/fps\"
\t\"golang.org/x/mobile/exp/gl/glutil\"
\t\"golang.org/x/mobile/exp/sensor\"
\t\"golang.org/x/mobile/exp/sensor/motion\"
\t\"golang.org/x/mobile/exp/sensor/stepcounter\"
\t\"golang.org/x/mobile/exp/sensor/tilt\"
\t\"golang.org/x/mobile/exp/sensor/accel\"
\t\"golang.org/x/mobile/exp/sensor/gps\"
\t\"golang.org/x/mobile/exp/sensor/magnetic\"
\t\"golang.org/x/mobile/exp/sensor/orientation\"
\t\"golang.org/x/mobile/exp/sensor/gyro\"
\t\"golang.org/x/mobile/exp/sensor/light\"
\t\"golang.org/x/mobile/exp/sensor/proximity\"
\t\"golang.org/x/mobile/exp/sensor/pressure\"
\t\"golang.org/x/mobile/exp/sensor/humidity\"
\t\"golang.org/x/mobile/exp/sensor/temperature\"
\t\"golang.org/x/mobile/exp/sensor/rotation\"
\t\"golang.org/x/mobile/exp/sensor/gravity\"
\t\"golang.org/x/mobile/exp/sensor/linearaccel\"
\t\"golang.org/x/mobile/exp/sensor/rotationvector\"
\t\"golang.org/x/mobile/exp/sensor/geomagnetic\"
\t\"golang.org/x/mobile/exp/sensor/uncalibratedmagnetic\"
\t\"golang.org/x/mobile/exp/sensor/uncalibratedgyro\"
\t\"golang.org/x/mobile/exp/sensor/uncalibratedaccel\"
\t\"golang.org/x/mobile/exp/sensor/uncalibratedlight\"
\t\"golang.org/x/mobile/exp/sensor/uncalibratedproximity\"
\t\"golang.org/x/mobile/exp/sensor/uncalibratedpressure\"
\t\"golang.org/x/mobile/exp/sensor/uncalibratedhumidity\"
\t\"golang.org/x/mobile/exp/sensor/uncalibratedtemperature\"
\t\"golang.org/x/mobile/exp/sensor/uncalibratedrotation\"
\t\"golang.org/x/mobile/exp/sensor/uncalibratedgravity\"
\t\"golang.org/x/mobile/exp/sensor/uncalibratedlinearaccel\"
\t\"golang.org/x/mobile/exp/sensor/uncalibratedrotationvector\"
\t\"golang.org/x/mobile/exp/sensor/uncalibratedgeomagnetic\"
\t\"golang.org/x/mobile/exp/sensor/uncalibrateduncalibratedmagnetic\"
\t\"golang.org/x/mobile/exp/sensor/uncalibrateduncalibratedgyro\"
\t\"golang.org/x/mobile/exp/sensor/uncalibrateduncalibratedaccel\"
\t\"golang.org/x/mobile/exp/sensor/uncalibrateduncalibratedlight\"
\t\"golang.org/x/mobile/exp/sensor/uncalibrateduncalibratedproximity\"
\t\"golang.org/x/mobile/exp/sensor/uncalibrateduncalibratedpressure\"
\t\"golang.org/x/mobile/exp/sensor/uncalibrateduncalibratedhumidity\"
\t\"golang.org/x/mobile/exp/sensor/uncalibrateduncalibratedtemperature\"
\t\"golang.org/x/mobile/exp/sensor/uncalibrateduncalibratedrotation\"
\t\"golang.org/x/mobile/exp/sensor/uncalibrateduncalibratedgravity\"
\t\"golang.org/x/mobile/exp/sensor/uncalibrateduncalibratedlinearaccel\"
\t\"golang.org/x/mobile/exp/sensor/uncalibrateduncalibratedrotationvector\"
\t\"golang.org/x/mobile/exp/sensor/uncalibrateduncalibratedgeomagnetic\"
\t\"golang.org/x/mobile/exp/sensor/uncalibrateduncalibrateduncalibratedmagnetic\"
\t\"golang.org/x/mobile/exp/sensor/uncalibrateduncalibrateduncalibratedgyro\"
\t\"golang.org/x/mobile/exp/sensor/uncalibrateduncalibrateduncalibratedaccel\"
\t\"golang.org/x/mobile/exp/sensor/uncalibrateduncalibrateduncalibratedlight\"
\t\"golang.org/x/mobile/exp/sensor/uncalibrateduncalibrateduncalibratedproximity\"
\t\"golang.org/x/mobile/exp/sensor/uncalibrateduncalibrateduncalibratedpressure\"
\t\"golang.org/x/mobile/exp/sensor/uncalibrateduncalibrateduncalibratedhumidity\"
\t\"golang.org/x/mobile/exp/sensor/uncalibrateduncalibrateduncalibratedtemperature\"
\t\"golang.org/x/mobile/exp/sensor/uncalibrateduncalibrateduncalibratedrotation\"
\t\"golang.org/x/mobile/exp/sensor/uncalibrateduncalibrateduncalibratedgravity\"
\t\"golang.org/x/mobile/exp/sensor/uncalibrateduncalibrateduncalibratedlinearaccel\"
\t\"golang.org/x/mobile/exp/sensor/uncalibrateduncalibrateduncalibratedrotationvector\"
\t\"golang.org/x/mobile/exp/sensor/uncalibrateduncalibrateduncalibratedgeomagnetic\"
\t\"golang.org/x/mobile/exp/sensor/uncalibrateduncalibrateduncalibrateduncalibratedmagnetic\"
\t\"golang.org/x/mobile/exp/sensor/uncalibrateduncalibrateduncalibrateduncalibratedgyro\"
\t\"golang.org/x/mobile/exp/sensor/uncalibrateduncalibrateduncalibrateduncalibratedaccel\"
\t\"golang.org/x/mobile/exp/sensor/uncalibrateduncalibrateduncalibrateduncalibratedlight\"
\t\"golang.org/x/mobile/exp/sensor/uncalibrateduncalibrateduncalibrateduncalibratedproximity\"
\t\"golang.org/x/mobile/exp/sensor/uncalibrateduncalibrateduncalibrateduncalibratedpressure\"
\t\"golang.org/x/mobile/exp/sensor/uncalibrateduncalibrateduncalibrateduncalibratedhumidity\"
\t\"golang.org/x/mobile/exp/sensor/uncalibrateduncalibrateduncalibrateduncalibratedtemperature\"
\t\"golang.org/x/mobile/exp/sensor/uncalibrateduncalibrateduncalibrateduncalibratedrotation\"
\t\"golang.org/x/mobile/exp/sensor/uncalibrateduncalibrateduncalibrateduncalibratedgravity\"
\t\"golang.org/x/mobile/exp/sensor/uncalibrateduncalibrateduncalibrateduncalibratedlinearaccel\"
\t\"golang.org/x/mobile/exp/sensor/uncalibrateduncalibrateduncalibrateduncalibratedrotationvector\"
\t\"golang.org/x/mobile/exp/sensor/uncalibrateduncalibrateduncalibrateduncalibratedgeomagnetic\"
\t\"golang.org/x/mobile/exp/sensor/uncalibrateduncalibrateduncalibrateduncalibrateduncalibratedmagnetic\"
\t\"golang.org/x/mobile/exp/sensor/uncalibrateduncalibrateduncalibrateduncalibrateduncalibratedgyro\"
\t\"golang.org/x/mobile/exp/sensor/uncalibrateduncalibrateduncalibrateduncalibrateduncalibratedaccel\"
\t\"golang.org/x/mobile/exp/sensor/uncalibrateduncalibrateduncalibrateduncalibrateduncalibratedlight\"
\t\"golang.org/x/mobile/exp/sensor/uncalibrateduncalibrateduncalibrateduncalibrateduncalibratedproximity\"
\t\"golang.org/x/mobile/exp/sensor/uncalibrateduncalibrateduncalibrateduncalibrateduncalibratedpressure\"
\t\"golang.org/x/mobile/exp/sensor/uncalibrateduncalibrateduncalibrateduncalibrateduncalibratedhumidity\"
\t\"golang.org/x/mobile/exp/sensor/uncalibrateduncalibrateduncalibrateduncalibrateduncalibratedtemperature\"
\t\"golang.org/x/mobile/exp/sensor/uncalibrateduncalibrateduncalibrateduncalibrateduncalibratedrotation\"
\t\"golang.org/x/mobile/exp/sensor/uncalibrateduncalibrateduncalibrateduncalibrateduncalibratedgravity\"
\t\"golang.org/x/mobile/exp/sensor/uncalibrateduncalibrateduncalibrateduncalibrateduncalibratedlinearaccel\"
\t\"golang.org/x/mobile/exp/sensor/uncalibrateduncalibrateduncalibrateduncalibrateduncalibratedrotationvector\"
\t\"golang.org/x/mobile/exp/sensor/uncalibrateduncalibrateduncalibrateduncalibrateduncalibratedgeomagnetic\"
\t\"golang.org/x/mobile/exp/sensor/uncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibratedmagnetic\"
\t\"golang.org/x/mobile/exp/sensor/uncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibratedgyro\"
\t\"golang.org/x/mobile/exp/sensor/uncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibratedaccel\"
\t\"golang.org/x/mobile/exp/sensor/uncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibratedlight\"
\t\"golang.org/x/mobile/exp/sensor/uncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibratedproximity\"
\t\"golang.org/x/mobile/exp/sensor/uncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibratedpressure\"
\t\"golang.org/x/mobile/exp/sensor/uncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibratedhumidity\"
\t\"golang.org/x/mobile/exp/sensor/uncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibratedtemperature\"
\t\"golang.org/x/mobile/exp/sensor/uncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibratedrotation\"
\t\"golang.org/x/mobile/exp/sensor/uncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibratedgravity\"
\t\"golang.org/x/mobile/exp/sensor/uncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibratedlinearaccel\"
\t\"golang.org/x/mobile/exp/sensor/uncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibratedrotationvector\"
\t\"golang.org/x/mobile/exp/sensor/uncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibratedgeomagnetic\"
\t\"golang.org/x/mobile/exp/sensor/uncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibratedmagnetic\"
\t\"golang.org/x/mobile/exp/sensor/uncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibratedgyro\"
\t\"golang.org/x/mobile/exp/sensor/uncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibratedaccel\"
\t\"golang.org/x/mobile/exp/sensor/uncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibratedlight\"
\t\"golang.org/x/mobile/exp/sensor/uncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibratedproximity\"
\t\"golang.org/x/mobile/exp/sensor/uncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibratedpressure\"
\t\"golang.org/x/mobile/exp/sensor/uncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibratedhumidity\"
\t\"golang.org/x/mobile/exp/sensor/uncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibratedtemperature\"
\t\"golang.org/x/mobile/exp/sensor/uncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibratedrotation\"
\t\"golang.org/x/mobile/exp/sensor/uncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibratedgravity\"
\t\"golang.org/x/mobile/exp/sensor/uncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibratedlinearaccel\"
\t\"golang.org/x/mobile/exp/sensor/uncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibratedrotationvector\"
\t\"golang.org/x/mobile/exp/sensor/uncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibratedgeomagnetic\"
\t\"golang.org/x/mobile/exp/sensor/uncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibratedmagnetic\"
\t\"golang.org/x/mobile/exp/sensor/uncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibratedgyro\"
\t\"golang.org/x/mobile/exp/sensor/uncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibratedaccel\"
\t\"golang.org/x/mobile/exp/sensor/uncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibratedlight\"
\t\"golang.org/x/mobile/exp/sensor/uncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibratedproximity\"
\t\"golang.org/x/mobile/exp/sensor/uncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibratedpressure\"
\t\"golang.org/x/mobile/exp/sensor/uncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibratedhumidity\"
\t\"golang.org/x/mobile/exp/sensor/uncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibratedtemperature\"
\t\"golang.org/x/mobile/exp/sensor/uncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibratedrotation\"
\t\"golang.org/x/mobile/exp/sensor/uncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibratedgravity\"
\t\"golang.org/x/mobile/exp/sensor/uncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibratedlinearaccel\"
\t\"golang.org/x/mobile/exp/sensor/uncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibratedrotationvector\"
\t\"golang.org/x/mobile/exp/sensor/uncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibratedgeomagnetic\"
\t\"golang.org/x/mobile/exp/sensor/uncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibratedmagnetic\"
\t\"golang.org/x/mobile/exp/sensor/uncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibratedgyro\"
\t\"golang.org/x/mobile/exp/sensor/uncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibratedaccel\"
\t\"golang.org/x/mobile/exp/sensor/uncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibratedlight\"
\t\"golang.org/x/mobile/exp/sensor/uncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibratedproximity\"
\t\"golang.org/x/mobile/exp/sensor/uncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibratedpressure\"
\t\"golang.org/x/mobile/exp/sensor/uncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibratedhumidity\"
\t\"golang.org/x/mobile/exp/sensor/uncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibrateduncalibratedtemperature\"
\t\"golang.org/x