Bluetooth RSSI Signal Strength

Any One can help me for Bluetooth RSSI Signal Strength.I want to show Bluetooth Signal Strength in our application.

i want to get the bluetooth signal strength of a another device which connected to my phone,

how can i get the bluetooth signal strength?

i tried to search alot over google and didnt find any answer.

do someone know how can i implement it?


I want like this image.