java - Android BluetoothManager can't disconnect bluetooth device

Question

I have two Bluetooth apps, I connected the Bluetooth device d1 in App1, and when I open App2, I can see the d1 device in the result of BluetoothManager.getConnectedDevices, but I cannot disconnect that device, though its characteristics can be read and written. So What is the reason and how to solve this problem? Thank You.

标签： javaandroid