连接蓝牙设备时如何防止android选择Bluetooth A2DP路由

Question

I'm using MediaRouter (from v7 support library) and programmatically select route for audio to my specific device route, but when some bluetooth A2DP device is connected, Android automatically selects route associated with that bluetooth device.

How can I prevent it from switching from my already selected and desired route?

Answer 1

Well, it seems like there is no way to do it so far.

Auto switching to the Bluetooth A2DP route is hardcoded into Android framework MediaRouter class

This will select the active BT route if there is one and the current selected route is the default system route, or if there is no selected route yet.

So, if your current route is default one, BT A2DP route will be automatically selected. It is possible to listen to onRouteSelected callback and select your default route back.