Default How to search data stored by google calendar

I am trying to develop an app but for that I need to read the data that is stored locally by the google calendar .I am unable to create oauth to access that data. I don't want to access the online google calendar. I just want to search google calendar data locally. Can any one please help. I am new to android development. I tried searching on google but getting the old commands and which are not working. I need to develop for android 4.4.2. thank you.