Why signed android apk is not running on emulator

Question

I have made a signed apk of an android project. Whenever my client try to run it on the emulator, he faces the following error message:

D:\\Android\\android-sdk-         


        

Answer 1

As mentioned by steelbytes, the error INSTALL_PARSE_FAILED_NO_CERTIFICATES suggests that the APK isn't signed like you think it is.

Run this command to verify which certificate was used to sign the APK:
jarsigner -verify -verbose -certs abc.apk

For each entry in the APK, you should see something like this:

sm    152412 Wed Oct 14 14:16:52 CEST 2009 classes.dex

      X.509, CN=Meebo, OU=Meebo, O=Meebo, L=Mountain View, ST=California, C=US
      [certificate is valid from 28/10/08 06:49 to 13/08/82 07:49]

Otherwise, if the APK isn't signed, you'll get the message jar is unsigned.