Hello Friends! Today I am going to share very simple, useful, popular post on Google map version-2, for drawing polygon and custom marker on tap on Google map. Important steps are given below- 1)Generate SHA1 certificate for your Google map from google developer account from below link- https://code.google.com/apis/ 2)Create new android project. 3)Copy paste below given activity and layout. 4)Add Internet permission in your manifest. 5)Put your map key in manifest. 7)Enable your Network connection or GPS. 8)Run your project and tap on map for draw circle and marker. 9)Long press for remove circle. 10)Put your comment for more help.