管理音频播放

If your app plays audio, it’s important that your users can control the audio in a predictable manner. To ensure a great user experience, it’s also important that your app manages the audio focus to ensure multiple apps aren’t playing audio at the same time.

After this class, you will be able to build apps that respond to hardware audio key presses, which request audio focus when playing audio, and which respond appropriately to changes in audio focus caused by the system or other applications.

Lessons

Controlling Your App’s Volume and Playback

Learn how to ensure your users can control the volume of your app using the hardware or software volume controls and where available the play, stop, pause, skip, and previous media playback keys.

管理音频焦点

With multiple apps potentially playing audio it's important to think about how they should interact. To avoid every music app playing at the same time, Android uses audio focus to moderate audio playback. Learn how to request the audio focus, listen for a loss of audio focus, and how to respond when that happens.

处理音频输出硬件

Audio can be played from a number of sources. Learn how to find out where the audio is being played and how to handle a headset being disconnected during playback.