Book Image

Android Studio Cookbook

By : Mike van Drongelen
Book Image

Android Studio Cookbook

By: Mike van Drongelen

Overview of this book

This book starts with an introduction of Android Studio and why you should use this IDE rather than Eclipse. Moving ahead, it teaches you to build a simple app that requires no backend setup but uses Google Cloud or Parse instead. After that, you will learn how to create an Android app that can send and receive text and images using Google Cloud or Parse as a backend. It explains the concepts of Material design and how to apply them to an Android app. Also, it shows you how to build an app that runs on an Android wear device. Later, it explains how to build an app that takes advantage of the latest Android SDK while still supporting older Android versions. It also demonstrates how the performance of an app can be improved and how memory management tools that come with the Android Studio IDE can help you achieve this. By the end of the book, you will be able to develop high quality apps with a minimum amount of effort using the Android Studio IDE.
Table of Contents (17 chapters)
Android Studio Cookbook
About the Author
About the Reviewers

Capturing images the easy way

There are of course, many ways on Android to take a picture or record a video. The easiest way to capture an image is by using an intent to launch the camera app and grabbing the results once the image has been taken.

Getting ready

For this recipe, you just need to have Android Studio up and running.

How to do it...

Launching a camera intent typically goes like this:

  1. In Android Studio, create a new project.

  2. In the activity_main.xml layout, add a new button and an image view. Name the image view image.

  3. Create an on-click handler for that button.

  4. Call the takePicture method from the event handler implementation.

  5. Implement the takePicture method. If supported by the device, launch the capture intent:

    static final int REQUEST_IMAGE_CAPTURE = 1;
    private void takePicture() {
      Intent captureIntent = new  
      if (captureIntent.resolveActivity(  
       getPackageManager()) != null) {