title: How to pair device bluetooth and send data
body: <p>I'm not learning about android, I'm writing a small bluetooth app, but there are some issues that need help.<br>
    - I have received the Paired Devices on the list, but don't know how to pair with it (I use HC-05 Bluetooth Module).<br>
    - Someone helped me fix it a little bit.<br>
      + when clicking on the Bluetooth icon on the side of the show. I want it to pair with that device and toast out.(I was build interface and some function in file below)<br>
      + If possible, please write me a function that sends data through the connected device<br>
  Project me to below,<br>
  <a href="https://drive.google.com/file/d/1fUZSOS1Eau3hiWZURdYhANQurK9L5xh9/view?usp=sharing" rel="nofollow noreferrer">Link Project</a></p>
  
  <p><br>thank you very much</p>