Where can I download apk demo file?
How to import google play services?
Google Play services is configured and imported automatically. If any problem occurs, please try below step:
1.In the Package Explorer, right-click the dependent project and select Properties.
2.In the Properties window, select the “Android” properties group at left and locate the Library properties at right.
3.Click Add to open the Project Selection dialog.
From the list of available library projects, select a GOOGLE SERVICES LIB project and click OK.
4.When the dialog closes, click Apply in the Properties window.
5.Click OK to close the Properties window.