Android AudioManager 使用详解：如何高效实现音频管理功能

<uses-permission android:name="android.permission.MODIFY_AUDIO_SETTINGS" />

AudioManager audioManager = (AudioManager) getSystemService(Context.AUDIO_SERVICE);

// 设置音量
audioManager.setStreamVolume(AudioManager.STREAM_MUSIC, desiredVolume, AudioManager.FLAG_SHOW_UI);

// 设置音频模式为单声道
audioManager.setAudioMode(AudioManager.MODE_MONO);

// 设置是否允许耳机插拔时改变音量
audioManager.setWiredHeadsetOn(true);

audioManager.registerMediaButtonReceiver(new MediaButtonReceiver());
audioManager.setMediaButtonStateListener(new MediaButtonStateListener() {
    @Override
    public void onMediaButtonStateChanged(int state) {
        // 处理耳机插拔事件
    }
});

audioManager.unregisterMediaButtonReceiver(mediaButtonReceiver);
audioManager.setMediaButtonStateListener(null);