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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
Languages
Tools
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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

Taking a picture using the Camera2 (the new) API


Now that we've looked at the old Camera API, it's time to learn about the new Camera2 API. Unfortunately, it's a bit more complicated due to the asynchronous nature of the APIs. Fortunately, the overall concept is the same as the previous Camera API.

Getting ready

Create a new project in Android Studio and call it Camera2API. On the Target Android Devices dialog, select the Phone & Tablet option and chose API 21 (or higher) for the Minimum SDK. Select Empty Activity when prompted for Activity Type.

How to do it...

As you'll see, there's a lot of code for this recipe. Start by opening the Android Manifest and following these steps:

  1. Add the following two permissions:

    <uses-permission android:name="android.permission.CAMERA" />
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
  2. Now open activity_main.xml and replace the existing TextView with the following views:

    <TextureView
        android:layout_width="match_parent...
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