Book Image

Android Studio 3.5 Development Essentials - Java Edition

By : Neil Smyth
Book Image

Android Studio 3.5 Development Essentials - Java Edition

By: Neil Smyth

Overview of this book

Android applications have become an important part of our daily lives and lots of effort goes into developing an Android application. This book will help you to build you own Android applications using Java. Android Studio 3.5 Development Essentials – Java Edition first teaches you to install Android development and test environment on different operating systems. Next, you will create an Android app and a virtual device in Android Studio, and install an Android application on emulator. You will test apps on physical Android devices, then study Android Studio code editor and constraint layout, Android architecture, the anatomy of an Android app, and Android activity state changes. The book then covers advanced topics such as views and widgets implementation, multi-window support integration, and biometric authentication, and finally, you will learn to upload your app to Google Play console and handle the build process with Gradle. By the end of this book, you will have gained enough knowledge to develop powerful Android applications using Java.
Table of Contents (86 chapters)
86
Index

39.7 Adding an Action to the Navigation Graph

Now that the two destinations have been added to the graph and the corresponding user interface layouts designed, the project now needs a way for the user to navigate from the main fragment to the second fragment. This will be achieved by adding an action to the graph which can then be referenced from within the app code.

To establish an action connection with the main fragment as the origin and second fragment as the destination, open the navigation graph and hover the mouse pointer over the vertical center of the right-hand edge of the mainFragment destination so that a circle appears as highlighted in Figure 39-12:

Figure 39-12

Click within the circle and drag the resulting line to the secondFragment destination:

Figure 39-13

Release the line to establish the action connection between the origin and destination at which point the line will change into an arrow as shown in Figure 39-14:

Figure 39-14

An...