As a constant process of learning SAPUI5, I have published detailed blog on SCN site regarding the use of Goolge API's. It will use the APIS to create a chart.
This is a series of blog which will be updated regularly with new contents.
Part 1 covers the basic operation of adding the API.
Part 2 will show the excat behaviour and complete code.
I will soon update this blog with new findings in SAPUI5 and related topics of Hana cloud portal.
Cheers