CODEWITHSUNDEEP
android
LeoSam
LeoSam

Reputation: 4961

Android compare signature of current package and new release app

I made an application on android and published it on the play store. I signed my apk with a new private key.

Last week, i wanted to update my application with my new features. when i try to install new version on the device its give me error msg :

application not installed , an existing package by the same name with conflicting signature is already installed ,

So my question is, compare between the key im using in my new release and the one ive in the play store , to make sure im using the same private key

Upvotes: 1

Views: 2009

Answers (2)

MikeWallaceDev
MikeWallaceDev

Reputation: 1468

This will happen when you switch from a debug version to a release version and back.

The solution is to simply uninstall the old version.

Android Studio will detect this and offer to uninstall the old version.

Upvotes: 0

Madhur Ahuja
Madhur Ahuja

Reputation: 22709

First, unzip the APK and extract the file /META-INF/ANDROID_.RSA (this file may also be CERT.RSA, but there should only be one .RSA file).

Then issue this command:

keytool -printcert -file ANDROID_.RSA

You will get certificate fingerprints like this:

     MD5:  B3:4F:BE:07:AA:78:24:DC:CA:92:36:FF:AE:8C:17:DB
     SHA1: 16:59:E7:E3:0C:AA:7A:0D:F2:0D:05:20:12:A8:85:0B:32:C5:4F:68
     Signature algorithm name: SHA1withRSA

Then use the keytool again to print out all the aliases of your signing keystore:

keytool -list -keystore my-signing-key.keystore

You will get a list of aliases and their certificate fingerprint:

android_key, Jan 23, 2010, PrivateKeyEntry,
Certificate fingerprint (MD5): B3:4F:BE:07:AA:78:24:DC:CA:92:36:FF:AE:8C:17:DB

Voila! we can now determined the apk has been signed with this keystore, and with the alias 'android_key'.

Keytool is part of Java, so make sure your PATH has Java installation dir in it.

Source: How do I find out which keystore was used to sign an app?

Upvotes: 5

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