title: Why signed android apk is not running on emulator
body: <p>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:</p>
  
  <pre><code>D:\Android\android-sdk-
  windows\tools&gt;adb install -r abc.apk
  500 KB/s (6940708 bytes in 13.534s)
          pkg: /data/local/tmp/abc.apk
  Failure [INSTALL_PARSE_FAILED_NO_CERTIFICATES]
  </code></pre>
  
  <p>What is the resolution?</p>