How to pair Bluetooth device programmatically Android

Question

I am developing an application where I want to connect a Bluetooth device main issue is I don't want user to enter required pin instead application should do that by himself...I don't have any connection related issue...Only want to insert and complete pin authentication process by application itself.

I found following code I am sure it is working but not sure on how to add pin in this code??

private void pairDevice(BluetoothDevice device) {         try {             Log.d("pairDevice()", "Start Pairing...");             Method m = device.getClass().getMethod("createBond", (Class[]) null);             m.invoke(device, (Object[]) null);             Log.d("pairDevice()", "Pairing finished.");         } catch (Exception e) {             Log.e("pairDevice()", e.getMessage());         }     } 

Does anyone know how to enter pin in above code or any similar code to solve problem.. Thank You

Answer 1

How can I avoid or dismiss Android's Bluetooth pairing notification when I am doing programmatic pairing?

This seems to give you the answer, with the pin entering and all. It involves sending .setPin() whenever you get the message.

Answer 2

So, I had this question, if someone needs the answer to this working in android 4.4.2.

 IntentFilter filter = new IntentFilter(                 "android.bluetooth.device.action.PAIRING_REQUEST");           /*          * Registering a new BTBroadcast receiver from the Main Activity context          * with pairing request event          */         registerReceiver(                 new PairingRequest(), filter); 

And the code for the Receiver.

  public static class PairingRequest extends BroadcastReceiver {         public PairingRequest() {             super();         }          @Override         public void onReceive(Context context, Intent intent) {             if (intent.getAction().equals("android.bluetooth.device.action.PAIRING_REQUEST")) {                 try {                     BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);                     int pin=intent.getIntExtra("android.bluetooth.device.extra.PAIRING_KEY", 0);                     //the pin in case you need to accept for an specific pin                     Log.d("PIN", " " + intent.getIntExtra("android.bluetooth.device.extra.PAIRING_KEY",0));                     //maybe you look for a name or address                     Log.d("Bonded", device.getName());                     byte[] pinBytes;                     pinBytes = (""+pin).getBytes("UTF-8");                     device.setPin(pinBytes);                     //setPairing confirmation if neeeded                     device.setPairingConfirmation(true);                 } catch (Exception e) {                     e.printStackTrace();                 }             }         }     } 

And in the manifest file.

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

And the broadcastReceiver.

 <receiver android:name=".MainActivity$PairingRequest">                 <intent-filter>                     <action android:name="android.bluetooth.device.action.PAIRING_REQUEST" />                     <action android:name="android.bluetooth.device.action.PAIRING_CANCEL" />                 </intent-filter> </receiver>