TL;DR
After building Android Automotive from source, how do I
- Run the car-emulator?
- "Install" the CarService and related packages onto a device?
Details
I'm trying to build Android Automotive from source. I'm able to successfully build it using the following commands:
$ repo init -u https://android.googlesource.com/platform/manifest -b android-8.0.0_r11
$ source build/envsetup.sh
$ lunch car_emu_x86_64-userdebug
$ make -j8 V=1 &>> make.log
My question is how do I run the emulator? After googling and going through some stackoverflow posts, I came across this:
First, I set an env variable in the command-line (The emulator uses this to determine which emulator to launch)
export ANDROID_PRODUCT_OUT=/path/to/build_root
Next, I created a file car-emulator.sh and put this in it (the build was done on an Ubuntu machine)
#!/usr/bin/env bash
ANDROID_BUILD_OUT=/path/to/build_root/out
PREBUILT=/path/to/build_root/prebuilts
EMULATOR_OUT=${ANDROID_BUILD_OUT}/target/product/car-x86_64
${PREBUILT}/android-emulator/linux-x86_64/emulator \
-sysdir ${EMULATOR_OUT} \
-system ${EMULATOR_OUT}/system.img \
-ramdisk ${EMULATOR_OUT}/ramdisk.img \
-data ${EMULATOR_OUT}/userdata.img \
-kernel ${PREBUILT}/qemu-kernel/x86_64/kernel-qemu \
-scale 0.7 \
-memory 512 \
-partition-size 1024
I also tried to download the relevant (darwin-x86_64) files from the build machine to my Mac laptop and tried running there. The emulator starts but crashes immediately with a huge native stack trace.
The next part of my question is how do I install this image on a device? I see that the CarService.apk has been generated. Is it sufficient to install this APK on a device for it to work? Or should the CarService and related packages be part of a system image that needs to be flashed in its entirety?
