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

69.4 Designing the VideoPlayer Layout

The user interface for the main activity will consist solely of an instance of the VideoView class. Use the Project tool window to locate the app -> res -> layout -> activity_main.xml file, double-click on it, switch the Layout Editor tool to Design mode and delete the default TextView widget.

From the Widgets category of the Palette panel, drag and drop a VideoView instance onto the layout so that it fills the available canvas area as shown in Figure 69-1. Using the Attributes panel, change the layout_width and layout_height attributes to match_constraint and wrap_content respectively. Also, remove the constraint connecting the bottom of the VideoView to the bottom of the parent ConstraintLayout. Finally, change the ID of the component to videoView1.

Figure 69-1