Android: How to change the Android core of the project

Recentl开发者_高级运维y I started to dev on Android programe developed by some other guy who left the company. He started the project as non Google API project and now there is a requirement to use the GPS & Google maps.

Since he started as non Google API project, I couldn't use them. Is there any way to change this?? if so Please let me know.

If using Eclipse, right click the project folder in package explorer, hit properties, and select Android. A list of available build targets will appear.

alright... most probably you are using Eclipse.. Right click on Project---> Properties----->Select android-----> Select Project Build Target