I created an Android app and published it within the Google Play Store. Upon subsequent download, I receive the “Package file was not signed correctly” error. I investigated and found the entry:
Published Android apk gives error "Package file was not signed correctly"
I tried the JDK 6 solution (compile and sign under JDK 6) but there was no joy. I tried to download/install on both a 2.3.3 and 4.x device but neither would work. In my case, the app was new so the keystore is also (not an update) new. I will say that the new keystore was initially created under JDK 1.7.
I am stumped on how to approach resolving this issue, anyone have thoughts?