使用耳机和扬声器同时 [英] simultaneously using a headphone and speaker

问题描述

我想同时使用的耳机插孔，方便不同的音频输出/输入使用扬声器音频输出。这可能吗？

I'd like to use the speaker for audio output while simultaneously using the headphone jack for a different audio output/input. Is this possible?

推荐答案

这是可能的做的部分的设备（我已经验证了它的工作原理上的索尼Xperia P），但我不'认为你能指望它来工作的所有的设备。

It's possible to do on some devices (I've verified that it works on a Sony XPeria P), but I don't think you can count on it to work on all devices.

什么，你会做的就是力量音乐流路由到扬声器：

What you'd do is force MUSIC streams to route to the loudspeaker:

Class audioSystemClass = Class.forName("android.media.AudioSystem");
Method setForceUse = audioSystemClass.getMethod("setForceUse", int.class, int.class);
// First 1 == FOR_MEDIA, second 1 == FORCE_SPEAKER. To go back to the default
// behavior, use FORCE_NONE (0).
setForceUse.invoke(null, 1, 1);

然后使用音乐流为任何你想要的路由到扬声器，而 VOICE_CALL 流什么你想送到耳机/耳机。

Then you use the MUSIC stream for anything you want routed to the loudspeaker, and the VOICE_CALL stream for anything you want routed to the headset/headphones.

请参阅我的<一个答案href="http://stackoverflow.com/questions/12017297/playing-sound-over-speakers-while-playing-music-through-headphones/12018786#12018786">Playing声音在播放音乐的扬声器通过耳机

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