[Solved] Signed apk doesn't install under android >= 7.0, Check your signing process!

@tobika wrote:

Hi,
just wanted to tell you about an important apk signing change that broke install of my app on all android >= 7.0.

Since I published my app a few years ago I was using apksigner to sign the apk and then zipalign on the already signed apk.

Somehow android >= 7.0 throws the following error if you modify the apk with zipalign once it's signed :

INSTALL_PARSE_FAILED_NO_CERTIFICATES: Failed to collect certificates from /data/app/vmdl24783944.tmp/base.apk: META-INF/CERT.SF indicates /data/app/vmdl24783944.tmp/base.apk is signed using APK Signature Scheme v2, but no such signature was found. Signature stripped?

Maybe you don't even know your apk has this problem so I hope this helps, because I had quite some users from the play store writing me emails that they can't install the app. In the end I realized they all had android >= 7.0 and could reproduce the problem with an emulator.

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