Book Image

Hands-On Android UI Development

By : Jason Morris
Book Image

Hands-On Android UI Development

By: Jason Morris

Overview of this book

A great user interface (UI) can spell the difference between success and failure for any new application. This book will show you not just how to code great UIs, but how to design them as well. It will take novice Android developers on a journey, showing them how to leverage the Android platform to produce stunning Android applications. Begin with the basics of creating Android applications and then move on to topics such as screen and layout design. Next, learn about techniques that will help improve performance for your application. Also, explore how to create reactive applications that are fast, animated, and guide the user toward their goals with minimal distraction. Understand Android architecture components and learn how to build your application to automatically respond to changes made by the user. Great platforms are not always enough, so this book also focuses on creating custom components, layout managers, and 2D graphics. Also, explore many tips and best practices to ease your UI development process. By the end, you'll be able to design and build not only amazing UIs, but also systems that provide the best possible user experience.
Table of Contents (21 chapters)
Title Page
Credits
About the Author
About the Reviewers
www.PacktPub.com
Customer Feedback
Preface
13
Activity Lifecycle

Wiring the CaptureClaimActivity events


Now that we have a way for the user to pick a date for their travel expense claims, we need to actually wire it into the CaptureClaimActivity, which is where all the logic and wiring for the screen will live. To start wiring the events for the CaptureClaimActivity, follow these steps:

  1. Open the CaptureClaimActivity.java file in Android Studio.
  2. Now, declare a new field in the class (before the onCreate method) for the DatePickerWrapper that you wrote (Android Studio can help by writing the import for you):
private DatePickerWrapper selectedDate;
  1. You'll note that (by default) the FloatingActionButton object is wired up with a simple anonymous event handler that will look something like this:
fab.setOnClickListener(new View.OnClickListener() {
  @Override
  public void onClick(View view) {
    Snackbar.make(
        view,
        "Replace with your own action",
        Snackbar.LENGTH_LONG
    ).setAction("Action", null).show();
  }
});
  1. This is how many once...