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As a workaround, I was able to successfully downgrade android emulator to 28.

See: https://stackoverflow.com/questions/49120854/how-to-downgrade-android-emulator

I downloaded 28.0.25.0 (build_id 5395263) from here:

https://dl.google.com/android/repository/emulator-darwin-5395263.zip

I deleted everything EXCEPT package.xml from

$HOME/Library/Android/sdk/emulator/

and replaced them with the contents of the extracted zip file.

Finally, make sure your AVD system image is NOT running api 30.

sdkmanager "system-images;android-27;google_apis_playstore;x86"

System images higher than api 29 are using a kernel format that the older emulator cannot understand.

Here's a workaround script you can try:

cd ~
mkdir emulator_downgrade
cd emulator_downgrade
wget https://dl.google.com/android/repository/emulator-darwin-5395263.zip
unzip emulator-darwin-5395263.zip
mv ~/Library/Android/sdk/emulator ~/Library/Android/sdk/previous-emulator
mv emulator ~/Library/Android/sdk/emulator
cp ~/Library/Android/sdk/previous-emulator/package.xml 
~/Library/Android/sdk/emulator/package.xml
cd ~
~/Library/Android/sdk/emulator/emulator -version
~/Library/Android/sdk/emulator/emulator -list-avds

For 30.2.6 the build number is 6962233 and that one still works for me on Sierra. Hope this gets fixed/backported. I'm waiting for new MbPros to be released (hopefully without touchbar). Don't want to upgrade my old one to >= Catalina. https://dl.google.com/android/repository/emulator-darwin-6962233.zip

Hi, thanks for the report. Can you try the emulator from https://ci.android.com/builds/submitted/7229563/sdk_tools_mac/latest/sdk-repo-darwin-emulator-7229563.zip ?

I can confirm that 7229563 works for me

Hi, thanks for the report. Can you try the emulator from https://ci.android.com/builds/submitted/7229563/sdk_tools_mac/latest/sdk-repo-darwin-emulator-7229563.zip ?

Another mojave user here with the problem. After replacing the emulator folder with the contents of the zip I can run the emulator again. Thanks.

It works-ish, but I still get some library failures on launch...

handleCpuAcceleration: feature check for hvf
cannot add library /Volumes/Jeff/Library/Android/sdk/emulator/qemu/darwin-x86_64/lib64/vulkan/libvulkan.dylib: failed
added library /Volumes/Jeff/Library/Android/sdk/emulator/lib64/vulkan/libvulkan.dylib
cannot add library /Volumes/Jeff/Library/Android/sdk/emulator/qemu/darwin-x86_64/lib64/vulkan/libMoltenVK.dylib: failed
added library /Volumes/Jeff/Library/Android/sdk/emulator/lib64/vulkan/libMoltenVK.dylib
emulator: INFO: GrpcServices.cpp:301: Started GRPC server at 127.0.0.1:8554, security: Local
emulator: emulator window was out of view and was recentered
emulator: INFO: QtLogger.cpp:68: Warning: Failed to get QCocoaScreen for NSObject(0x0) ((null):0, (null))

I remember seeing these warning messages on previous emulator binaries as well. But they seem harmless.