title: Build Android APK programmatically
body: <p>I need to build a web environment which creates signed Android .apk files from a given Android application source code. How can I get this? The web environment will be running on a Linux machine.</p>
  
  <p>I was thinking on a Linux shell script which builds signed .apk file. However, I've read some information about Apache Ant but I don't understand exactly its purpose and if it could do the trick.</p>