GoMobile 是将 Go 代码库转换成 Android/iOS 库的一种方式.
准备工作:
mkdir -p ${HOME}/android
curl https://dl.google.com/android/repository/android-ndk-r24-linux.zip -o android-ndk-r24.zip
unzip android-ndk-r24.zip && mv android-ndk-r24 ${HOME}/android
网址: https://developer.android.com/studio, 选择 Command line tools
当中的下载项
mkdir -p ${HOME}/android/android-sdk
# Download Tools
curl https://dl.google.com/android/repository/commandlinetools-linux-8512546_latest.zip -o commandlinetools.zip
unzip commandlinetools.zip
mv cmdline-tools ${HOME}/android/android-sdk
# Download Android SDK
${HOME}/android/android-sdk/cmdline-tools/bin/sdkmanager "platform-tools" "platforms;android-23" --sdk_root=${HOME}/android/android-sdk/cmdline-tools
注: android-23 当中的 23 是 API 级别. 这个对应的是 Android6.0, 对于 Android10, 需要 android-29. 自行决定使用哪个API级别的Android 版本
go install golang.org/x/mobile/cmd/gomobile@latest
go install golang.org/x/mobile/cmd/gobind@latest
清理本地 go-build 缓存, 目录是 ~/.cache/go-build
编译 makefile
// 编译 demo/makefile
# config
export ANDROID_HOME=${HOME}/android/android-sdk/cmdline-tools
export ANDROID_NDK_HOME=${HOME}/android/android-ndk-r24
export TOOL=${HOME}/android/android-ndk-r24
android: depend
gomobile bind -target=android/arm64 -androidapi=23 -o device.aar -v -x ${HOME}/demo
ios: depend
gomobile bind -target=ios -o device.framework -v ${HOME}/demo
depend:
cd ${HOME}/demo
gomobile init
go get golang.org/x/mobile/bind
clean:
rm -rvf libdevice.*
androidapi
是 API 版本, target 是CPU架构
// 源代码 demo/demo.go
// demo.go
package demo
import (
"fmt"
"io/ioutil"
"path/filepath"
"time"
)
var done = make(chan struct{})
func Start(dir string) {
fmt.Println("dir", dir)
file := filepath.Join(dir, "test.log")
err := ioutil.WriteFile(file, []byte(time.Now().String()), 0666)
if err != nil {
fmt.Printf("Writefile:%v\n", err)
}
select {
case <-done:
case <-time.After(10 * time.Minute):
}
}
func Stop(mac string) {
fmt.Println("stop mac", mac)
close(done)
}
准备工作:
mkdir -p ${HOME}/android
curl https://dl.google.com/android/repository/android-ndk-r24-linux.zip -o android-ndk-r24.zip
unzip android-ndk-r24.zip && mv android-ndk-r24 ${HOME}/android
export ARCH=arm
export NDK_ROOT=${HOME}/android/ndk-toolchain/${ARCH}
python ${HOME}/android/android-ndk-r24/build/tools/make_standalone_toolchain.py --arch $ARCH --api 22 --install-dir $NDK_ROOT
arch 指定目标编译架构 {arm,arm64,x86,x86_64}, api, 指定 Android API版本
export CC=${HOME}/android/ndk-toolchain/arm/bin/arm-linux-androideabi-gcc
export GOOS=android
export GOARCH=arm
export GOARM=7
export CGO_ENABLED=1
go build -x main.go
这里的 main.go 只是一个简单的 Go 程序.