一系列代码示例和模板,可帮助您加快应用开发流程。您可以浏览示例,了解如何为应用构建不同的组件。

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语言
主题

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

  • ContentResolver
  • DocumentsContract
  • PdfRenderer
  • Android 存储空间
  • 存储
  • Kotlin
中级

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

  • ContentResolver
  • DocumentsContract
  • Android 存储空间
  • 存储
  • Kotlin
中级

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 界面视图
  • Java
中级
  • app
  • localstorage
  • Kotlin
中级

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 架构界面层
  • Android 架构
  • Jetpack Compose 导航
  • Android 界面状态生产
  • Android 测试
  • Jetpack Compose 架构和状态
  • Android 架构界面事件
  • Android 界面状态容器 (state holder)
  • Android 架构数据层
  • Jetpack Compose 测试
  • Kotlin
中级

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

  • 架构
  • Android 架构
  • Kotlin
中级

This sample showcases the following Architecture Components: Room ViewModels LiveData

  • 架构
  • Android 架构
  • Java
高级

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

  • 架构
  • Android 架构
  • Java
高级

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 界面视图
  • Java
高级

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 界面视图
  • Java
中级

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
  • 媒体
  • Android 相机和媒体
  • Java
高级

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 相机和媒体
  • 媒体
  • Java

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

  • MotionEvent
  • Android 界面视图
  • Java
中级

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 和游戏
  • Java
专家

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 界面视图
  • Java
高级

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

  • Sensor
  • SensorEvent
  • SensorEventListener
  • SensorManager
  • 传感器
  • Java
高级

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

  • FingerprintManager
  • AuthenticationCallback
  • CryptoObject
  • KeyGenParameterSpec
  • KeyStore
  • Cipher
  • KeyGenerator
  • 安全性
  • Android 安全与隐私权
  • Kotlin
中级

Sample for the Androidx Biometrics Library

  • BiometricManager
  • BiometricPrompt
  • 安全性
  • Android 安全与隐私权
  • Kotlin
中级

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 连接性
  • 连接
  • Java
高级

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 相机和媒体
  • 相机
  • Kotlin
中级

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 相机和媒体
  • 相机
  • Kotlin
中级

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 相机和媒体
  • 相机
  • Kotlin
中级

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

  • Android 界面视图
  • Java

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

  • Android 界面视图
  • Kotlin
精选
“Now in Android”是一款使用 Kotlin 和 Jetpack Compose 构建的功能齐全的 Android 应用。它采用了 Android 设计和开发最佳实践,旨在为开发者提供实用的参考资源。