Arduino > Bluetooth > Android app

I want build this project similar to this : [login to view URL] *But using "Bluetooth HC-06 module" instead of 1shield. 1st scenario: When the Ultrasonic Sensor HC-SR04 module detect an obstacle object the Android App will speak: stop, warning, watch out… using TTS (text t speech). Arduino Uno > Ultrasonic Sensor HC-SR04 > Bluetooth HC-06 > Android app 2nd scenario: In the Android app, I want to use Google map API . for tracking the user Let’s say the user is holding the smartphone and other parts, and I want to track the user and receive his latitude, longitude coordinate link through SMS and/or Email. A simple way. 3rd scenario: The interface design of Android app, First thing is when I open the application, the Bluetooth should be enabled by default and connected with Bluetooth HC-06. Second thing a microphone icon in the middle that’s when the 1st scenario comes. And finally the google map API should be running in the background Important: Please i want the simplest coding ever, i am student and i understand the coding a little bit. I want a comments in every line possibly to understand the coding. *You can use the Arduino code in that URL link, I don’t mind. Software tools: • Android Studio only (NO Eclipse) • Arduino IDE Hardware tools: • Arduino Uno. • Two of Ultrasonic Sensor HC-SR04 module • Bluetooth HC-06 module