如何实现App后台停止主音轨播放并在前台恢复播放？

Got it, let's sort out this background audio playback issue for you. Here's exactly how to make your main track pause when the app goes to the background and resume when it comes back to the foreground:

Step 1: Add a Ref to Your Audio Component #

First, you'll need a way to directly control the Audio component's playback state. Add a ref attribute to it so you can call its pause() and play() methods later.

Step 2: Listen for App State Changes #

Next, you need to subscribe to your app's lifecycle events to detect when it moves between foreground and background. When the app goes to background, pause the audio; when it returns to foreground, resume playback.

Example Code (Adjust for Your Framework) #

Here's a practical example using a React-based framework (like React Native or a web app with React):

import { useRef, useEffect } from 'react';
// For React Native, import AppState; for web, use document visibility API
import { AppState } from 'react-native';

function YourRootAppComponent() {
  // Create a ref to access the Audio component instance
  const audioRef = useRef(null);

  useEffect(() => {
    // Handle app state changes
    const handleAppStateUpdate = (nextState) => {
      if (nextState === 'background') {
        // Pause audio when app goes to background
        audioRef.current?.pause();
      } else if (nextState === 'active') {
        // Resume audio when app comes back to foreground
        audioRef.current?.play();
      }
    };

    // Subscribe to app state change events
    const stateSubscription = AppState.addEventListener('change', handleAppStateUpdate);

    // Clean up the subscription when component unmounts
    return () => {
      stateSubscription.remove();
    };
  }, []);

  return (
    <App>
      <Audio
        ref={audioRef}
        source="../assets/Art Of Silence_V2.mp3"
        autoPlay={true}
        loops={Audio.Infinite}
      />
      {/* Your other app components go here */}
    </App>
  );
}

Notes for Other Frameworks #

• Web Apps: If you're building a web app, use the document.visibilitychange event instead. Check document.hidden to detect if the tab is in background:

  useEffect(() => {
    const handleVisibilityChange = () => {
      if (document.hidden) {
        audioRef.current?.pause();
      } else {
        audioRef.current?.play();
      }
    };
  
    document.addEventListener('visibilitychange', handleVisibilityChange);
    return () => document.removeEventListener('visibilitychange', handleVisibilityChange);
  }, []);
  

• Vue: Use mounted and beforeUnmount hooks to add/remove the visibility change listener, similar to the web example.
• Ensure Audio Component APIs: Double-check that your Audio component exposes pause() and play() methods—most UI libraries or framework-native audio components include these by default.

内容的提问来源于stack exchange，提问作者Somayyah Mohammed