APK of v2.2.0 lacks v1 signature/certificates

IzzySoft commented 4 years ago

There are no certificates inside the APK, so I assume you forgot at least v1 signing. Could you please sign the APK and re-attach? Thanks!

freshollie commented 4 years ago

Oops. Didn't really know if the v1 signatures were required anymore so I didn't tick the box. Rebuilding now.

IzzySoft commented 4 years ago

Thanks! Explanation:

v1 is still needed for Android 6 and below, which doesn't know about v2 as that was introduced with Android 7. So if you want to support users on devices with Android versions below 7, you must provide v1 signature.
Starting with Android 7, v2 was introduced. Here v1 is optional and used as fallback.
apksigner verify app.apk yields an ERROR if v1 is missing; thus binary repos like mine will fail to include such APKs (that's how I noticed).
to be on the safe side, just tick both check boxes in Android Studio :wink:

freshollie / UsbGps4Droid