This removes the dependency on AppIntro and replaces it with our own custom
intro implementation, backed by ViewPager2. We're doing this because we want a
more reliable and customizable onboarding for Aegis.
I've kept the design mostly the same as it was before, but tried to achieve a
bit of a cleaner look:
<img src="https://alexbakker.me/u/vsr3ahpjt6.png" width="200"> <img
src="https://alexbakker.me/u/efqid2ixly.png" width="200"> <img
src="https://alexbakker.me/u/oehmjm0rn9.png" width="200">
This fixes a number of issues that can happen when navigating back to previous
slides, by disabling back navigation entirely. One such issue is that when
navigating back from the last slide, one would always land on the
password/biometrics setup slide, even if "none" was selected on the security
picker slide.
Also fixes another issue where previously, if a user made it to the last intro
slide and then navigated back to change the security options, any changes would
be ignored.
The main goals of this patch are to:
- Improve the exception handling in Aegis and the way we present errors messages
to the user when they occur.
- Write exception stack traces to the log in more places, so that the ADB logs
we ask for from our users when reporting bugs become more useful.
- Reduce the amount of times we throw a RuntimeException, particularly when an
Android Keystore operation fails.
Achieving the above goals ended up resulting in a very large refactor. The
intro and unlock flow of the app need to be retested entirely.
We decided on calling the state file the "vault" a while back. This patch makes
the naming consistent across the codebase. I left "DatabaseImporter" classes
alone, because I'm not sure what a better name for those would be.
This patch replaces the usage of the deprecated FingerprintManager API with
BiometricPrompt. This uses the Android X library, so we get the native biometric
prompt on recent versions of Android and a Google-made one on older versions. By
not working with custom prompts for biometric authentication like we do now, we
can be sure that any issues like #70, #81, #237 are not actually our fault.
Here's what it looks like:
As a nice aside, this also adds support for the new facial recognition as an
authentication method on Pixel 4 phones.
This is still a draft, but early feedback is welcome.
