Book Image

Android Wear Projects

By : Ashok Kumar S
Book Image

Android Wear Projects

By: Ashok Kumar S

Overview of this book

Android Wear Projects is your opportunity to step into the exciting new world of Android Wear app development. This book will help you to master the skills in Android Wear programming and give you a complete insight on wear app development. You will create five different Android Wear apps just like the most popular Android Wear apps. You will create a To-do list, a city maps app, a Wear messenger, Wear fitness tracker and Watch face. While you create these apps you will learn to create custom notifications, receive voice inputs in notifications, add pages to notifications and stack notifications. You will see how to create custom wear app layouts, the custom UIs specially designed for Wear. You will learn to handle and manage data and syncing data with other devices, create interactive Watch faces and also ensure the safety and security of your Wear apps by testing and securing your apps before you deploy them on the app store.
Table of Contents (18 chapters)
Title Page
About the Author
About the Reviewers
Customer Feedback
Let us Help Capture What is on Your Mind - WearRecyclerView and More
Let us Help Capture What is on Your Mind - Saving Data and Customizing the UI
Measuring Your Wellness and Syncing Collected Sensor Data
Let us Chat in a Smart Way - Notifications and More

Writing your own watch face

Android Studio is the primary tool that we use to write Wear apps for numerous reasons; since we have already configured our development environment for Wear 2.0 development, it shouldn't be a challenge. Let's fire up Android Studio and create a Wear project.

In Activity chooser, select Add No Activity. Since a watch face is a service, we don't need activity:

We have read in the previous section that we will be extending the class to CanvasWatchFaceService, where watch face is being drawn on a canvas, and another class is CanvasWatchFaceService.Engine, where we will work on the actual implementation of the watch face and more methods that we have discussed. It will help us to achieve the necessary setup for the watch face. Now, let's create a class file called PacktWatchFace in the package.

The PacktWatchFace class will extend to the CanvasWatchFaceService class:

After creating the class file, extend it to the CanvasWatchFaceService class; this is the service class...