Since Android 11, APK contents must be signed with signature scheme
v2 or higher (v2/v3/v4). In order to maintain compatibility with
older versions of Android, APKs can also be signed with v1 (after
first signing with v2/v3/v4), but this is not mandatory.
When using a template apk file, the APK library now attempts to
extract signing scheme v1 certificate details (using keytool)
and falls back to extracting v2/v3/v4 certificate details (using
apksigner) if the APK is not signed with signing scheme v1.
Fixes#16295.
Brendan Coles
d28a172ab4