管理媒体播放（3）处理媒体硬件输出

原创于 2015-01-07 11:32:57 发布 · 395 阅读

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CC 4.0 BY-SA版权

文章标签：

#多媒体 #audio

本文介绍了一种检测当前使用的媒体输出硬件的方法，包括蓝牙A2DP、扬声器电话、有线耳机等，并通过注册BroadcastReceiver来监听音频输出设备的变化。

检测哪种硬件被使用

if (isBluetoothA2dpOn()) {
    // Adjust output for Bluetooth.
} else if (isSpeakerphoneOn()) {
    // Adjust output for Speakerphone.
} else if (isWiredHeadsetOn()) {
    // Adjust output for headsets
} else { 
    // If audio plays and noone can hear it, is it still playing?
}

处理媒体输出硬件设备的改变

private class NoisyAudioStreamReceiver extends BroadcastReceiver {
    @Override
    public void onReceive(Context context, Intent intent) {
        if (AudioManager.ACTION_AUDIO_BECOMING_NOISY.equals(intent.getAction())) {
            // Pause the playback
        }
    }
}

private IntentFilter intentFilter = new IntentFilter(AudioManager.ACTION_AUDIO_BECOMING_NOISY);

private void startPlayback() {
    registerReceiver(myNoisyAudioStreamReceiver(), intentFilter);
}

private void stopPlayback() {
    unregisterReceiver(myNoisyAudioStreamReceiver);
}