SDK : Android 4.0.3
It is need to apply a API_key from Google Console.(https://console.developers.google.com/)
PS:This is practice program.
This APP can check GPS service and show your location on UI.
Some text need to use UTF-8 code to show. So I will change this word to English when I have free time.
My English is very pool so I will try my best to do anything.