Getting to know the location of the user and providing customized services to them is one of the powerful features of Android devices. Android app developers can take advantage of this powerful feature and provide a fascinating service to the users of their app. Hence, understanding Google location services, the Google Maps APIs, and location APIs, are very important for the developers of Android applications.

In this chapter, we will develop our own location-based alarm (LBA) and, in the process of developing the app, we will learn about the following:

• Creating a map based on Android activity
• Usage of Google Maps in Android applications
• The process for registering and obtaining the key required for Google Maps activity
• Developing a screen for the user to provide input to the app
• How to complete our app and make a workable model in the next chapter by adding the alarm feature and using Google Location Services