You can set the paired device you choose, connect and disconnect using the widget. And the icon of widget is modified whether connected or not.
When placed in the HOME screen the Widget, select a Bluetooth device to connect.
Because you can select the paired device, please go to pair with the device you want to target.
Connect to a Bluetooth device was set to be placed on the screen, tap the Widget.
– Supported profiles
Supported profiles are HSP and A2DP, but HSP is unstable.
If you need more improvements to be used, I will support.
– Supported devices
The widget works only with Android-2.1.
In addition, XPERIA (SO-01B) has been guaranteed to work only, other devices may not be available.