Splash screens. Add the app bar. Control the system UI visibility. Supporting swipe-to-refresh. Pop-up messages overview. Adding search functionality. Creating backward-compatible UIs.
Home channels for mobile apps. App widgets. Media app architecture. Building an audio app. Building a video app. The Google Assistant. Routing between devices. Background tasks. Manage device awake state.
Save to shared storage. Save data in a local database. Sharing simple data. Sharing files. Sharing files with NFC. Printing files. Content providers. Autofill framework. Contacts provider. Data backup. Remember and authenticate users. User location. Using touch gestures. Handling keyboard input. Supporting game controllers. Input method editors. Performing network operations.
Transmit network data using Volley. Perform network operations using Cronet. Transferring data without draining the battery. Reduce network battery drain. Transfer data using Sync Adapters. Bluetooth Low Energy. Wi-Fi infrastructure. Discover and connect. Runtime API reference. Web-based content. Android App Bundles. Google Play. Play Asset Delivery. Play Feature Delivery. In-app reviews. In-app updates.
Google Play Instant. Get started with instant apps. Get started with instant games. Integrate with Firebase. Play Install Referrer. Play Install Referrer Library. Application Licensing. Android GPU Inspector. System profiling. Analyze a system profile. GPU performance counters.
Frame profiling. Analyze a frame profile. Frame Profiler UI. Customize or port game engines. Process input events. Support game controllers. Achieve proper frame pacing. Frame pacing in Vulkan. Integrate Android Performance Tuner. Output audio. Manage memory. Use prebuilt or turnkey game engines. Develop with Defold. Develop with Godot. Develop with Unity.
Use Android Performance Tuner. Game best practices. Maximize device availability. Art assets. OpenGL and Vulkan.
Game Mode. Best practices. Building effective unit tests. Automating UI tests. Testing app component integrations. Android Vitals. Optimizing for Battery Life. Intents and intent filters. User interface. Add motion to your layout with MotionLayout. MotionLayout XML reference. Improving layout performance.
Custom view components. Look and feel. Splash screens. Add the app bar. Control the system UI visibility. Supporting swipe-to-refresh. Pop-up messages overview. Adding search functionality. Creating backward-compatible UIs. Home channels for mobile apps. App widgets. Media app architecture. Building an audio app. Building a video app. The Google Assistant. Routing between devices. Background tasks. Manage device awake state. Save to shared storage.
Save data in a local database. Sharing simple data. Sharing files. Sharing files with NFC. Printing files. Content providers. Autofill framework. Contacts provider. Data backup. Remember and authenticate users. User location. Using touch gestures. Handling keyboard input. Supporting game controllers.
Input method editors. Performing network operations. Transmit network data using Volley. Perform network operations using Cronet. Transferring data without draining the battery. Reduce network battery drain. Transfer data using Sync Adapters. Bluetooth Low Energy. Wi-Fi infrastructure. Discover and connect. Runtime API reference. Web-based content. Android App Bundles.
Google Play. Play Asset Delivery. Play Feature Delivery. In-app reviews. In-app updates. Google Play Instant. Get started with instant apps. Get started with instant games. Integrate with Firebase. Play Install Referrer. Play Install Referrer Library. Application Licensing. Android GPU Inspector.
System profiling. Analyze a system profile. GPU performance counters. Frame profiling. Analyze a frame profile. Frame Profiler UI. Customize or port game engines. Process input events. Support game controllers. Achieve proper frame pacing. Frame pacing in Vulkan. Integrate Android Performance Tuner. Output audio. Manage memory. Use prebuilt or turnkey game engines. Develop with Defold. Develop with Godot.
Develop with Unity. Use Android Performance Tuner. Game best practices. Maximize device availability. Art assets. OpenGL and Vulkan. Game Mode. Best practices. Building effective unit tests. Automating UI tests. Testing app component integrations. Android Vitals. Optimizing for Battery Life. System tracing. Build and test apps for accessibility. Advanced topics. Protecting against security threats with SafetyNet.
Build for Billions. Build for Enterprise. App feedback. Device management. Dedicated devices. Android versions. Android Developers. Your game can receive these input events by implementing the following callback methods in your active Activity or focused View you should implement the callbacks for either the Activity or View , but not both : From Activity : dispatchGenericMotionEvent android. MotionEvent Called to process generic motion events such as joystick movements.
KeyEvent Called to process key events such as a press or release of a gamepad or D-pad button. From View : onGenericMotionEvent android. KeyEvent Called to process a press of a physical key such as a gamepad or D-pad button.
KeyEvent Called to process a release of a physical key such as a gamepad or D-pad button. Inspect the following objects provided by the callbacks to get information about the type of input event received: KeyEvent An object that describes directional pad D-pad and gamepad button events. You can obtain the key code by calling getKeyCode or from key event callbacks such as onKeyDown. MotionEvent An object that describes input from joystick and shoulder trigger movements.
Motion events are accompanied by an action code and a set of axis values. The action code specifies the state change that occurred such as a joystick being moved. You can obtain the action code by calling getAction and the axis value by calling getAxisValue. Verify a game controller is connected When reporting input events, Android does not distinguish between events that came from a non-game controller device and events that came from a game controller.
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