How To Connect To Phone And Send Files & Chat Messages Via Bluetooth?

I am creating a Android Application that will have a Menu containing two options: Chat via Bluetooth. Transfer Files via Bluetooth. Config containing controls to turn Bluetooth OF

Solution 1:

Maybe the android bluetooth tutorial can help you

And this tutorial say how you can send messages and files between devices: Bluetooth Data Transfer

But, basically: You need add this permission to your manifest.xml file:

<uses-permissionandroid:name="android.permission.BLUETOOTH"/>

And your on create event could looks like: (But all the codes are in the tutorial)

@OverrideprotectedvoidonCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
tv = (TextView) findViewById(R.id.txDevice);
MY_UUID = UUID.fromString("00001101-0000-1000-8000-00805F9B34FB");

ba = BluetoothAdapter.getDefaultAdapter();
if(!ba.isEnabled()){
Intentintent=newIntent(BluetoothAdapter.ACTION_REQUEST_ENABLE);
startActivity(intent);
Intentintent1=newIntent(BluetoothAdapter.ACTION_REQUEST_DISCOVERABLE);
startActivity(intent1);
}

Solution 2:

Google has provided a sample app to demonstrate the Bluetooth chat. You can refer it.

https://android.googlesource.com/platform/development/+/25b6aed7b2e01ce7bdc0dfa1a79eaf009ad178fe/samples/BluetoothChat

It is fully functional bluetooth chat application.

And to activate and deactivate bluetooth you can use this code

BluetoothAdaptermBluetoothAdapter= BluetoothAdapter.getDefaultAdapter();    
 if (mBluetoothAdapter.isEnabled()) {
      //deatctivate bluetooth
     mBluetoothAdapter.disable(); 
  } 
    //Activate bluetooth
  mBluetoothAdapter.enable();