google auth works in production apk but not works after launching the app on play store in ionic 2

Question

1.The application was build in Ionic 2 2. For implementing the google auth Cordova-plugin-google plus is used 3. The app works fine before launching on play store.

Answer 1

You need to change your SHA1 key.

How to Get Android Release Keystore SHA1 Fingerprint

1. Open terminal.

2. Change the directory to the JDK bin directory,

   cd C:\Program Files\Java\jdk{Version}\bin

3. Next you have to run the keytool.exe. Use the following line to get the SHA1 fingerprint.

   keytool -list -v -keystore {keystore_name} -alias {alias_name}

4. Enter the password, you will get the SHA1 and MD5 fingerprint.

Change SHA1

5. Go to https://console.developers.google.com/

6. Choose your project -> Credentials -> OAuth 2.0 client IDs

7. Click on android client id

8. Replace SHA1 here and save it

I hope it works for you.