即使插入耳机，如何通过扬声器播放音频? [英] How to Play audio through speaker even when headset is plugged in?

问题描述

该问题的标题可能看起来很重复，但是我的问题有时是一个问题，并且会引起故障.插入耳机后，我已使用以下代码通过扬声器进行播放.

The title of the question might look repeated, but my problem is a sometimes problem and causes glitches. I have used the below code to play through speaker when headset is plugged in.

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

        audioManager.setMode(AudioManager.STREAM_MUSIC);
        audioManager.setSpeakerphoneOn(true);

        if(! Globals.mediaPlayer.isPlaying()){
            Globals.mediaPlayer.start();
        }

上面的代码以下列方式播放音频: 1.很少能完美播放. 2.大多数情况下，它在背景中播放循环声音. 3.几次，它什么都不玩.

The above code plays audio in the following ways: 1. Very few times, it plays perfectly. 2. Most of the times, it plays with a looping sound in the background. 3. Few times, it doesnot play anything.

插入耳机后，系统声音似乎没有错误播放.例如-设置铃声可正确播放相应的铃声，而不会出现小故障.请帮助我了解如何在插入耳机的情况下通过扬声器正确播放声音.

It seems that system sounds play with no error when headset is plugged in. For example - setting the ringtone plays the corresponding ringtone correctly without any glitches. Please help me to understand how I can play a sound correctly through speaker with headset plugged in.

推荐答案

稍作研究(可能还不止于此)，我想出了解决方案.

After working on it a little bit(maybe more than that), I figured out the solution for it.

我们应该创建自己的MediaPlayer实例并为该实例设置Audio流类型，而不是更改AudioManager的设置.我们可以将其设置为STREAM_RING，以将音频路由到耳机和扬声器.

Instead of changing settings of AudioManager, we should create our own MediaPlayer instance and set the Audio stream type for that instance. We can set it to STREAM_RING to route the audio to headset and speaker.

player.reset();
    player.setAudioStreamType(AudioManager.STREAM_RING);
    try {
        player.setDataSource(context, uri);
        player.prepareAsync();}

然后，您可以收听onPreparedListener来启动音频.请查看博客通过Android中的扬声器路由音频以获得更好的图片.

Then, you can listen to onPreparedListener to start the audio. Please check the blog Route audio through speaker in Android to get a better picture.

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