Get Android OS version from user-agent

Question

I\'ve been trying to find a parser or regex that will give me the Android OS version from a user agent string.

E.g.

Mozilla/5.0 (Linux; U; Android 2.         


        

Answer 1

This regular expression is a bit more "future proof" than mathepic's answer:

Android (\d+(?:\.\d+)*);

It allows for multiple digits in each place as well as additional periods in the version number. Android's been out 3 years and we're on 3.0. Eventually we'll get to 10.0.0.

This will catch all of the following:

• 1.6 (real)
• 2.3.4 (real)
• 9
• 12.34.56 (fake. but one day...)
• 3.4.5.6 and 4.5.6.7.8.9 (fake... but just in case)

This could be written a little more strictly as:

Android (\d+(?:\.\d+){0,2});

This sticks more closely to the schema we've already seen used, but could potentially miss some versions of they decide to add an additional .1 at the end of a version. It also matches for the future 10.0.0 version.