You parked as close to the stadium as you possibly could, but when the concert ends, you don’t have a clue where your car is. Your friends are equally clueless.
Fortunately, you haven’t lost your Android phone, which never forgets anything, and you remember you have the hot new app, “Android, Where’s My Car?” With this app, you click a button when you park your car, and the Android uses its location sensor to record the car’s GPS co-ordinates and address.
Later, when you reopen the app, it gives you directions from where you currently are to the remembered location—problem solved!
This app covers the following concepts:
• Determining the location of the Android device using the LocationSensor component.
• Recording data in a database directly on the device using TinyDB.
• Using the ActivityStarter component to open Google Maps from your app and show directions from one location to another.
Source: University of San Francisco