Una selezione di esempi di codice e modelli da utilizzare per accelerare lo sviluppo delle app. Sfoglia gli esempi per scoprire come creare diversi componenti per le tue applicazioni.

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Argomento

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

  • ContentResolver
  • DocumentsContract
  • PdfRenderer
  • Spazio di archiviazione di Android
  • Storage
  • Kotlin
Intermedio

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

  • ContentResolver
  • DocumentsContract
  • Spazio di archiviazione di Android
  • Storage
  • Kotlin
Intermedio

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
  • Visualizzazioni UI Android
  • Java
Intermedio
  • app
  • localstorage
  • Kotlin
Intermedio

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

  • Livello UI dell'architettura Android
  • Architettura Android
  • Navigazione su Jetpack Compose
  • Produzione stato UI Android
  • Test di Android
  • Architettura e stato di Jetpack Compose
  • Eventi UI di dell'architettura Android
  • Contenitori di stato UI Android
  • Livello dati dell'architettura Android
  • Test per Jetpack Compose
  • Kotlin
Intermedio

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

  • Architettura
  • Architettura Android
  • Kotlin
Intermedio

This sample showcases the following Architecture Components: Room ViewModels LiveData

  • Architettura
  • Architettura Android
  • Java
Avanzato

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

  • Architettura
  • Architettura Android
  • Java
Avanzato

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
  • Visualizzazioni UI Android
  • Java
Avanzato

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
  • Visualizzazioni UI Android
  • Java
Intermedio

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
  • Contenuti multimediali
  • Fotocamera e supporti Android
  • Java
Avanzato

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

  • Fotocamera e supporti Android
  • Contenuti multimediali
  • Java

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

  • MotionEvent
  • Visualizzazioni UI Android
  • Java
Intermedio

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 e giochi
  • Java
Esperto

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
  • Visualizzazioni UI Android
  • Java
Avanzato

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

  • Sensor
  • SensorEvent
  • SensorEventListener
  • SensorManager
  • Sensori
  • Java
Avanzato

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

  • FingerprintManager
  • AuthenticationCallback
  • CryptoObject
  • KeyGenParameterSpec
  • KeyStore
  • Cipher
  • KeyGenerator
  • Sicurezza
  • Sicurezza e privacy Android
  • Kotlin
Intermedio

Sample for the Androidx Biometrics Library

  • BiometricManager
  • BiometricPrompt
  • Sicurezza
  • Sicurezza e privacy Android
  • Kotlin
Intermedio

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
  • Connettività di Android
  • Connettività
  • Java
Avanzato

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
  • Fotocamera e supporti Android
  • Fotocamera
  • Kotlin
Intermedio

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
  • Fotocamera e supporti Android
  • Fotocamera
  • Kotlin
Intermedio

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
  • Fotocamera e supporti Android
  • Fotocamera
  • Kotlin
Intermedio

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

  • Visualizzazioni UI Android
  • Java

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

  • Visualizzazioni UI Android
  • Kotlin
In primo piano
Ora in Android è disponibile un'app per Android completamente funzionale, realizzata con Kotlin e Jetpack Compose. Questo modello modella le best practice per la progettazione e lo sviluppo di Android ed è stato progettato per essere un utile riferimento per gli sviluppatori.