Android O Developer Preview emulator always OFFLINE

user_3589011 0
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I'm trying to test my app against the Android O developer preview. I can download and run the emulator, but when deploying my app, it always comes up as "[OFFLINE]". If I go ahead and try to deploy anyway, I get the following output:

com.android.ddmlib.AdbCommandRejectedException: device unauthorized.
This adb server's $ADB_VENDOR_KEYS is not set
Try 'adb kill-server' if that seems wrong.
Otherwise check for a confirmation dialog on your device.
Error while Installing APK

I've tried restarting ADB as suggested in the output above. Also, I never get a confirmation dialog in the emulator. Emulators for other versions. eg. Nougat 7.1 work fine.

I'm running Android Studio 3.0 Canary 1 (the standard channel doesn't work either).

android-8.0-oreo android-studio android-emulator android
2 Answers

I was getting this same error. I could not get it to work until I did the following steps.
Take a look at the AVD listing and I'll try to explain what I mean. oreo atom

The blue highlighted one is the one that I got working. However, the last one shown is the first one I attempted to get running -- notice that little briefcase icon? That means that it includes Google Play and that may be the issue.

When you set up your Oreo emulator the first screen will look something like the following --- choose a device without the briefcase (no google play). no briefcase - no google play

After that, you'll need to choose the Oreo image. It'll look something like the following and you may have a Download link if you don't already have it downloaded. I had already installed an Oreo image previously, but then it made me download this one too, which I thought was odd:

oreo 8.0

After that, you'll start up the image and I believe it will work with no problems just like your other emulators. I didn't have to do any of the developer setup on the device (did not have to turn on usb debugging or anything). It just worked.

I tried running the Oreo with Google Play again -- after the successful one above and even though it is running I still see it is offline. I'm actually running both emulators at the same time so you can see them listed on the right. offline

Also, I notice that every time I start the Google Play Oreo image it thinks it needs to set up the SD card and format it again so maybe their are other issues with that image.

user_2552430
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