问题
I'm creating an app that interacts with the phone stream, and I'm wondering if this is a reasonable workaround to be able to play audio into the call stream
I know that it isn't directly possible using the API, but is it possible to create a fake Bluetooth device that has a virtual input? I figure it is a similar problem to not being able to answer calls via the API, but you can create a virtual Bluetooth device that sends a fake keypress, which picks up the call.
Or is there another workaround that may do what I'm trying to accomplish?
来源：https://stackoverflow.com/questions/16695476/can-i-create-a-virtual-bluetooth-headset-to-manipulate-call-stream