A selection of code samples and templates for you to use to accelerate your app development. Browse samples to learn how to build different components for your applications.

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This sample demonstrates how to display PDF document on screen using the PdfRenderer introduced in Android 5.0 Lollipop.

  • ContentResolver
  • DocumentsContract
  • PdfRenderer
  • Android Storage
  • Storage
  • Kotlin
Intermediate

A proof of concept file manager utilizing the ACTION_OPEN_DOCUMENT_TREE intent introduced with Android 5.0, API level 21.

  • ContentResolver
  • DocumentsContract
  • Android Storage
  • Storage
  • Kotlin
Intermediate

This sample shows how to use scene transitions from one Activity to another in Lollipop. Uses a combination of changeImageTransform and changeBounds to transition a grid of images to an Activity with a large image and detail text.

  • Transition
  • ActivityOptions
  • Android UI Views
  • Java
Intermediate
  • app
  • localstorage
  • Kotlin
Intermediate

These samples showcase different architectural approaches to developing Android apps. In its different branches you'll find the same app (a TODO app) implemented with small differences. In this branch you'll find: User Interface built with Jetpack

  • Android Architecture UI Layer
  • Android Architecture
  • Jetpack Compose Navigation
  • Android UI state production
  • Android Testing
  • Jetpack Compose Architecture and State
  • Android Architecture UI Events
  • Android UI state holders
  • Android Architecture Data Layer
  • Jetpack Compose Testing
  • Kotlin
Intermediate

Features This sample showcases the behavior of a bottom navigation view following the Principles of Navigation. Fixed start destination Navigation state should be represented via a stack of destinations The Up button never exits your app Up and Back

  • Architecture
  • Android Architecture
  • Kotlin
Intermediate

This sample showcases the following Architecture Components: Room ViewModels LiveData

  • Architecture
  • Android Architecture
  • Java
Advanced

This sample showcases the following Architecture Components: Paging Room ViewModels LiveData

  • Architecture
  • Android Architecture
  • Java
Advanced

This sample demonstrates the use of the Autofill Framework. It includes implementations of client Activities with views that should be autofilled, and a Service that can provide autofill data to client Activities.

  • View
  • AutoFillService
  • AutoFillManager
  • Android UI Views
  • Java
Advanced

This sample detects gestures on a view and logs them. In order to try this sample out, try dragging or tapping the text.

  • GestureDetector
  • MotionEvent
  • Android UI Views
  • Java
Intermediate

This sample shows how to use the MediaCoder to decode a video, use a TimeAnimator to sync the rendering commands with the system display frame rendering and finally render it to a TextureView.

  • MediaCodec
  • MediaExtractor
  • TimeAnimator
  • Media
  • Android Camera & Media
  • Java
Advanced

This sample demonstrates the use of the MediaRouter API to display content on a secondary display. Use the "Media Route Action Item" in the ActionBar to select an output device. If your device supports Miracast wireless displays, you may need to

  • Android Camera & Media
  • Media
  • Java

Sample demonstrates the use of MotionEvent properties to keep track of individual touches across multiple touch events.

  • MotionEvent
  • Android UI Views
  • Java
Intermediate

This sample demonstrates using RenderScript to perform basic image manipulation. Specifically, it allows users to dynamically adjust the saturation for an image using a slider. A custom RenderScript kernel performs the saturation adjustment, running

  • RenderScript
  • Allocation
  • Android NDK and Games
  • Java
Expert

A basic app showing how to use the Transition framework introduced in KitKat. The app shows radioboxes to select between different Scenes, and uses various ways to transition between them.

  • TransitionManager
  • Transition
  • Scene
  • Android UI Views
  • Java
Advanced

Sample demonstrating how to set up SensorEventListeners for step detectors and step counters.

  • Sensor
  • SensorEvent
  • SensorEventListener
  • SensorManager
  • Sensors
  • Java
Advanced

A sample that demonstrates to use registered fingerprints to authenticate the user in your app

  • FingerprintManager
  • AuthenticationCallback
  • CryptoObject
  • KeyGenParameterSpec
  • KeyStore
  • Cipher
  • KeyGenerator
  • Security
  • Android Security and Privacy
  • Kotlin
Intermediate

Sample for the Androidx Biometrics Library

  • BiometricManager
  • BiometricPrompt
  • Security
  • Android Security and Privacy
  • Kotlin
Intermediate

Sample demonstrating how to advertise small amounts of data using the Bluetooth Low Energy API. Also demonstrates how to scan for those Advertisements. (requires 2 devices to see full operation)

  • BluetoothLeAdvertiser
  • BluetoothLeScanner
  • Android Connectivity
  • Connectivity
  • Java
Advanced

This sample demonstrates using the Camera2 API to capture a JPEG, DEPTH or RAW frame. Check the source code to see a simple example of how to display the camera preview and capture a still image using the default configuration with the selected pixel

  • DngCreator
  • Android Camera & Media
  • Camera
  • Kotlin
Intermediate

This sample captures high-speed video via the Camera2 API including displaying a camera preview and capturing a high-speed (slow motion) video using repeating burst capture requests.

  • camera2
  • CameraConstrainedHighSpeedCaptureSession
  • Android Camera & Media
  • Camera
  • Kotlin
Intermediate

This sample captures video record via the Camera2 API including displaying a camera preview and capturing a high-speed (slow motion) video using repeating capture requests.

  • camera2
  • MediaRecorder
  • Android Camera & Media
  • Camera
  • Kotlin
Intermediate

This sample demonstrates how to use CardView introduced in the support library in Android 5.0.

  • Android UI Views
  • Java

This sample demonstrates how to use CardView introduced in the support library in Android 5.0.

  • Android UI Views
  • Kotlin
Featured
Now in Android is a fully functional Android app built with Kotlin and Jetpack Compose. It models Android design and development best practices and was designed to be a useful reference for developers.