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Android Development Masterclass

Working with CameraX APIs

Explore how to use CameraX APIs to build camera functionality in Android apps. Learn to set up camera preview, manage camera lifecycle, and capture high-quality images with simple code. This lesson helps you add customizable camera features efficiently while understanding permissions and configuration.

We'll cover the following...

Introduction

CameraX is part of the Jetpack Compose libraries. CameraX APIs make it easier to build apps with camera functionality, providing consistent and simple-to-use APIs that work on most Android devices. The library includes APIs that can be used to preview and capture both images and videos.

In this lesson, we’ll learn to use CameraX APIs to preview and capture images.

Setting up the library

We need to add CameraX library dependencies in the app/build.gradle file before we can use the APIs.

XML
implementation 'androidx.camera:camera-core:1.2.0-alpha04'
implementation 'androidx.camera:camera-lifecycle:1.2.0-alpha04'
implementation 'androidx.camera:camera-view:1.2.0-alpha04'

We also need to add camera permissions in the AndroidManifest.xml

XML
<!-- required for saving captured images -->
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<!-- camera permissions -->
<uses-feature android:name="android.hardware.camera.any" />
<uses-permission android:name="android.permission.CAMERA" />

Note: Camera permissions must be requested at runtime. Refer to the "Workflow for requesting runtime ...