即使插入耳机，如何通过蓝牙扬声器播放音频? [英] How to play audio through Bluetooth speaker even when headset is plugged in?
问题描述
我已将手机连接到蓝牙扬声器，并且已插入耳机.现在，我想通过蓝牙扬声器播放音频.
当我将音频流设置为AudioManager.STREAM_MUSIC时，它只能在耳机上播放.
I have my phone connected to a Bluetooth speaker and the headphones plugged in. Now I'd like to play audio through the Bluetooth speaker.
When I set the audio stream to AudioManager.STREAM_MUSIC it just plays over the headphones.
也可以在耳机上播放也没关系，但是我需要在蓝牙扬声器上播放它.
It doesn't matter if it plays on the headphones as well but I need it to play on the Bluetooth speaker.
这怎么可能?应用程序SoundAbout可以做到这一点，因此必须有一种方法.
How is this possible? The app SoundAbout manages to do that so there must be a way.
当我插入耳机并仅随后连接到蓝牙扬声器时，所有音频都会通过我想要的蓝牙扬声器播放. 但我不能期望用户发现了这一点，并且在向他们显示复杂的消息之前，我宁愿找到一种方法，使声音在连接到某些扬声器时始终通过BT扬声器播放.
When I plug in the headphones and only afterwards connect to the Bluetooth speakers all audio plays through the Bluetooth speakers which I want. But I can't expect the user to find that out and before having to show them a complicated message I'd rather find out a way to make the sound always play through BT speakers when connected to some.
谢谢
(Note this is not the same question as this: How to Play audio through speaker even when headset is plugged in? I want it to play on Bluetooth speakers, not on the integrated speaker of the phone.)
推荐答案
解决方案
假设您已经在新的媒体播放器实例上测试了STREAM_RING，并且没有直接设置流类型，但没有成功，您需要为蓝牙设备配置正确的配置文件.
Suppose you already tested STREAM_RING on your new instance of media player and not directly setting stream type, and it didn't work out, You need a correct profile for your bluetooth device.
看看本文 阅读实施HAL"部分，其中有很多您可以使用的不同配置文件的来源.
Take a look at this article Read the "Implementing HAL" section, there is alot of source for different profile that you may be able to use.
还有一个简单的解决方案，即在getServiceConnected()方法中将设备配置文件更改为HEADSET，它将变成保持连接的设备，但输出将变为单声道！我记得，这对于扬声器来说很可惜，某些硬件可能不支持A2DP，但仍会被有线耳机打断.
There is also an easy solution which is to change your device profile to HEADSET in your getServiceConnected() method, it will turn into a Stay connected device but the output will become mono! As I recall, Which is a shame for speakers, A2DP also may not be supported in some hardwares and still interrupted by wire headsets.
我建议创建一个新的配置文件并使用它，与HAL一起工作有点棘手，但值得这样做，
I suggest to create a new profile and use it, a little bit tricky working with HAL but will worth it,
很抱歉，目前我无法为您提供源代码.
Sorry that I can not provide a source code for you at the moment.
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