After you have successfully registered as an official Android developer, it's time to prepare your application for publishing. In order to publish your application, you have to sign the APK file. Before you do that, you should make sure everything is in place. Here's a laundry list of things to do before signing the application:
android:debuggableattribute from the
<application>tag in your manifest file.
<manifest>tag, you'll find the
android:versionNameattributes. If you have already published a previous version of your application, you must increase the
versionCodeattribute, and you should also change the
versionCodeattribute has to be an integer; the ...