问题
I have integrated firebase phone authentication in my android app. It was working fine for almost 2 months and suddenly from 2-3 days back I am observing different behavior.
Capcha screen started appearing. Earlier I had not enabled safetynet device check API. Looking at firebase documentation I treid enabling safetynet device check.
As the steps are not clear, I am not sure if I did it right. I am also not clear how firebase and google cloud are linked. How firebase will know which google cloud project to link to..
Earlier the flow was ... Phone authentication->receive SMS->auto verify SMS and user is logged in. Now the flow is ... Phone authentication-> Captcha screen appears (kind of web page is loaded)... -> after sometime the captcha screen closes on its own -> SMS received -> login with OTP verification.
Let me know how to avoid the captcha screen. I am sure I will lose many users if capcha screen comes in between.
回答1:
Step 1:Go to your Google cloud console with this link ,enable Android Device Verification for your project.
Step 2: add SHA-256 fingerprint in your firebase.do so from the Settings Page of the Firebase console.Don't forget to download and replace the latest google-services.json file
来源：https://stackoverflow.com/questions/64656208/what-are-the-exact-steps-to-enable-safetynet-device-check-api-on-android