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Android Application Development Cookbook

You're reading from   Android Application Development Cookbook Over 100 recipes to help you solve the most common problems faced by Android Developers today

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Product type Paperback
Published in Mar 2016
Publisher
ISBN-13 9781785886195
Length 428 pages
Edition 2nd Edition
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Authors (2):
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Rick Boyer Rick Boyer
Author Profile Icon Rick Boyer
Rick Boyer
Kyle Mew Kyle Mew
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Kyle Mew
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Toc

Table of Contents (17) Chapters Close

Preface 1. Activities FREE CHAPTER 2. Layouts 3. Views, Widgets, and Styles 4. Menus 5. Exploring Fragments, AppWidgets, and the System UI 6. Working with Data 7. Alerts and Notifications 8. Using the Touchscreen and Sensors 9. Graphics and Animation 10. A First Look at OpenGL ES 11. Multimedia 12. Telephony, Networks, and the Web 13. Getting Location and Using Geofencing 14. Getting your app ready for the Play Store 15. The Backend as a Service Options Index

Set up the OpenGL ES environment


Our first recipe will start by showing the steps to set up an activity to use an OpenGL GLSurfaceView. Similar to the Canvas, the GLSurfaceView is where your will perform your OpenGL drawing. As this is the starting point, the other recipes will refer to this recipe as the base step when they need a GLSurfaceView created.

Getting ready

Create a new project in Android Studio and call it: SetupOpenGL. Use the default Phone & Tablet options and select Empty Activity when prompted for Activity Type.

How to do it...

We'll start by indicating the application's use of OpenGL in the Android Manifest, and then we'll add the OpenGL classes to the activity. Here are the steps:

  1. Open the Android Manifest and add the following XML:

    <uses-feature android:glEsVersion="0x00020000" android:required="true" />
  2. Open MainActivity.java and add the following global variables:

    private GLSurfaceView mGLSurfaceView;
  3. Add the following inner class to the MainActivity class:

    class CustomGLSurfaceView...
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