Android Enthusiasts Stack Exchange is a question and answer site for enthusiasts and power users of the Android operating system. It only takes a minute to sign up.
Sign up to join this community
Now a time, whenever you make a login or anything using a username or password, Google prompts you to save the password in your primary account.
Unlike earlier, when it was limited to browsers only, but now the prompt comes even when you're logging with an app.
How is Google able to know that it is login and they have to prompt to save password?
Because since Android 8.0 Oreo, Android supports autofill framework natively, and the input fields are considered as account credentials.
Android introduced autofill framework in Android 8.0 Oreo. It allows autofill services (e.g. Google Autofill, password managers, etc.) to save and automatically fill the data on autofill clients (e.g. Android apps) when needed.
To determine the type of the input, developers can rely on the autofill service's heuristics or explicitly give proper hints. One of the common autofill scenarios is account credentials, in which there are hints for:
AUTOFILL_HINT_USERNAME)AUTOFILL_HINT_PASSWORD)AUTOFILL_HINT_NEW_USERNAME)AUTOFILL_HINT_NEW_PASSWORD)When the autofill service detects these hints, it will prompt the user to save/fill the credentials.
P.S. the autofill service can be changed from the Android Settings by navigating to Settings > System > Language and input > Autofill service, or searching for "autofill".
