google map not showing after publishing android application?

Solution 1:

When you exported your application to publish it, you are probably not using the debug keystore any more, but a custom one. (You cannot publish debug apps to Market). When you switch to another keystore, you will have to generate a new Google Maps API Key, based on that.

Solution 2:

After Exporting the Project,

  • Step 1: Just Copy the SHA1 key and Get the New API_KEY from Google Play Developer Console
  • Stet 2:Paste the API_KEY in your android Manifest file
  • Step 3:Again exporting the same project to upload your final.apk use the existing keystore