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Konstantin8105 2022-11-22 18:39:52 +03:00
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examples/others/android/example/README.md
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### Android example
To compile example to shared library you will need [Android NDK](https://developer.android.com/ndk/downloads/index.html).
To build Android apk you will need [Android SDK](http://developer.android.com/sdk/index.html#Other).
Export path to Android NDK, point to location where you have unpacked archive:
export ANDROID_NDK_HOME=/opt/android-ndk
Add toolchain bin directory to PATH:
export PATH=${ANDROID_NDK_HOME}/toolchains/arm-linux-androideabi-4.9/prebuilt/linux-x86_64/bin:${PATH}
Export sysroot and libdirs:
export ANDROID_SYSROOT=${ANDROID_NDK_HOME}/sysroot
export ANDROID_PLATFORM=${ANDROID_NDK_HOME}/platforms/android-16/arch-arm
export ANDROID_TOOLCHAIN=${ANDROID_NDK_HOME}/toolchains/arm-linux-androideabi-4.9/prebuilt/linux-x86_64
And compile shared library:
CC="arm-linux-androideabi-gcc" \
CGO_CFLAGS="-I${ANDROID_SYSROOT}/usr/include -I${ANDROID_SYSROOT}/usr/include/arm-linux-androideabi --sysroot=${ANDROID_SYSROOT} -D__ANDROID_API__=16" \
CGO_LDFLAGS="-L${ANDROID_SYSROOT}/usr/lib/arm-linux-androideabi -L${ANDROID_PLATFORM}/usr/lib -L${ANDROID_TOOLCHAIN}/arm-linux-androideabi/lib -L${ANDROID_TOOLCHAIN}/lib/gcc/arm-linux-androideabi/4.9.x --sysroot=${ANDROID_PLATFORM}" \
CGO_ENABLED=1 GOOS=android GOARCH=arm \
go build -buildmode=c-shared -ldflags="-s -w -extldflags=-Wl,-soname,libexample.so" \
-o=android/libs/armeabi-v7a/libexample.so
To build apk export path to Android SDK, point to location where you unpacked archive:
export ANDROID_HOME=/opt/android-sdk
And build apk with ant:
cd android
ant clean debug
Or with gradle:
./gradlew assembleDebug
If everything is successfully built apk can be found in bin/ directory or in the android/build/outputs in case `gradle` is used.