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Build

This particular README is written with CalyxOS in mind. NOT TESTED! I've added LOCAL_PRODUCT_MODULE := true to AndroidAuto's Android.mk file. After pulling down the code from Calyx's repo as documented on their site, the stub folder should be placed into calyxos/android13/packages/apps/.

Next, add the following line in calyxos/android13/vendor/calyx/config/common.mk:

PRODUCT_PACKAGES += AndroidAuto

Also, make sure to add Android Auto package name com.google.android.projection.gearhead to the role config_systemAutomotiveProjection in the line 2150 inside calyxos/android13/frameworks/base/core/res/res/values/config.xml file.

Should look like this:

<!-- The names of the packages that will hold the automotive projection role. -->
<string name="config_systemAutomotiveProjection" translatable="false">com.google.android.projection.gearhead</string>

Verify Build

After going through Calyx's build and sign process, you can check that Android Auto is a privapp. You can do this by going to the file generated in $OUT/obj/PACKAGING/target_files_intermediates/*.zip. Within the archive, you can see the folders. Under /PRODUCT/priv-app/, you can check that the AndroidAuto folder is present. If it is not, something went wrong with it being added to the build.

Post-Flash Setup

  • Install the latest Android Auto APK as well as the latest APK for: Google, Google Speech services and Google Maps. As far as I can tell, it doesn't matter if it comes from Aurora Store or if it's from a standalone APK.

  • Open up Google Maps and grant it the location permission. You do not need to be signed in for this.

  • Plug your phone into your car. You may or may not have to manually start the pairing process in the car's menu. I had to do this on my 2018 Chevy Volt, but this may depend on your car/head unit's make/model/year.

  • When firing it up and doing the initial setup, it may say Maps needs locations permissions. If it's set, you can cancel out of that and it should accept it.

  • Android Auto should simply work now.

Thanks

  • Thank you to @dylangerdaly for starting the initial effort.
  • Thank you to @SolidHal for the continuation of this effort and writing the code this repo was forked from.
  • Thank you to @JQuilty for the latest android 12L patches.
  • Thanks to everyone in this thread that's contributed and tested - microg/GmsCore#897
  • Thanks to the MicroG developers.
  • Thanks to the CalyxOS developers.
  • Thanks to @chirayudesai in particular for all the help in the CalyxOS Matrix server.