title: Can automatically connect to paired bluetooth device when in range?
body: <p>I have two Android phones. I want to make an auto connection between them via Bluetooth. For example,</p>
  
  <blockquote>
    <p>I have my android phone which paired to another Bluetooth. When I put these phone near together, they need to detect Bluetooth device, and automatically connect to a selected android phone (known Adress/MAC/Paired before). I don't need to connect it again. I want this kind of connectivity in my Android application. </p>
  </blockquote>
  
  <p>I google and found some related reference, but they are did not solve the issue yet. I think that I need to create a thread/service to automatically connect Bluetooth when they are in range. However, I can not implement it. If you have a good solution, please let me know. Thank you</p>
  
  <p><a href="https://stackoverflow.com/questions/26569156/automatically-connect-to-paired-bluetooth-device-when-in-range">Automatically connect to paired bluetooth device when in range</a></p>
  
  <p><a href="https://stackoverflow.com/questions/17810582/find-already-paired-bluetooth-devices-automatically-when-they-are-in-range">Find already paired bluetooth devices automatically, when they are in range</a></p>
  
  <pre><code>   /**
       * The BroadcastReceiver that listens for discovered devices and changes the title when
       * discovery is finished
       */
  private final BroadcastReceiver mReceiver = new BroadcastReceiver() {
      @Override
      public void onReceive(Context context, Intent intent) {
          String action = intent.getAction();
  
          // When discovery finds a device
          if (BluetoothDevice.ACTION_FOUND.equals(action)) {
              // Get the BluetoothDevice object from the Intent
              BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
              // If it's already paired, skip it, because it's been listed already
              if (device.getBondState() != BluetoothDevice.BOND_BONDED) {
                  mNewDevicesArrayAdapter.add(device.getName() + "\n" + device.getAddress());
              }
              // When discovery is finished, change the Activity title
          } else if (BluetoothAdapter.ACTION_DISCOVERY_FINISHED.equals(action)) {
              setProgressBarIndeterminateVisibility(false);
              setTitle(R.string.select_device);
              if (mNewDevicesArrayAdapter.getCount() == 0) {
                  String noDevices = getResources().getText(R.string.none_found).toString();
                  mNewDevicesArrayAdapter.add(noDevices);
              }
          }
      }
  };
  </code></pre>