Auto increment version code in Android app

Question

is there a way to auto-increment the version code each time you build an Android application in Eclipse?

According to http://developer.android.com/guide/publishing/v

Answer 1

For those that are on OSX and want to use Python, but not loose the XML formatting which when parsing is done by the python XML parser happens, here is a python script that will do the incremental based on regular expression, which keeps the formatting:

#!/usr/bin/python
import re

f = open('AndroidManifest.xml', 'r+')
text = f.read()

result = re.search(r'(?Pandroid:versionName=")(?P.*)(?P")',text)
version = str(float(result.group("version")) + 0.01)
newVersionString = result.group("groupA") + version + result.group("groupB")
newText = re.sub(r'android:versionName=".*"', newVersionString, text);
f.seek(0)
f.write(newText)
f.truncate()
f.close()

The code was based on @ckozl answer, just was done in python so you don't need to create an executable for this. Just name the script autoincrement.py, place it in the same folder with the manifest.xml file and then do the steps that ckozl did describe above!