From the Google Calendar Help document on the web, it is stated that::
Is Google Calendar for mobile devices in sync with Google Calendar?
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Early in the morning searched the android forums for this question. Felt very happy to see the following post made by Ryder.
Sorted it out now, when making an event I had to select my Google account from the top rather than the default my calendar. Works an absolute treat now.
Tested it instantly. Works great. No need of tackling with the Google Calendar API now.
Thanks All