How to unpair bluetooth device using android 2.1 sdk

Question

In Android 2.1, to unpair a Bluetooth device you can go to Bluetooth settings, long-click on a device and select Unpair to unpair that device. I want to be able to do this from my application. I can retrieve a list of paired/bonded devices using BluetoothAdapter.getBondedDevices(), but I can't find how to unpair. I've explored the BluetoothChat sample, and I've searched the sdk but still can't find an API that allows this.

How can I unpair a Bluetooth device?

Answer 1

Here's how you unpair/remove a bonded device call this method where macAddress is the string of the mac address of the device..i.e. "00:02:00:A3:03:05"

IBluetooth ib =getIBluetooth();
ib.removeBond(macAddress);

To get the IBluetooth Object you need to go through a couple of steps

1. create a package in your project called android.bluetooth
2. create two files, IBluetooth.aidl and IBluetoothCallback.aidl

3. create method in your files called getBluetooth()

   private IBluetooth getIBluetooth() {
   IBluetooth ibt = null;
   
   try {
   
       Class c2 = Class.forName("android.os.ServiceManager");
   
       Method m2 = c2.getDeclaredMethod("getService",String.class);
       IBinder b = (IBinder) m2.invoke(null, "bluetooth");
   
       Class c3 = Class.forName("android.bluetooth.IBluetooth");
   
       Class[] s2 = c3.getDeclaredClasses();
   
       Class c = s2[0];
       Method m = c.getDeclaredMethod("asInterface",IBinder.class);
       m.setAccessible(true);
       ibt = (IBluetooth) m.invoke(null, b);
   
   
   } catch (Exception e) {
       Log.e("flowlab", "Erroraco!!! " + e.getMessage());
   }
   
   return ibt;
   }
   

   /************ IBluetooth.aidl ************/

   package android.bluetooth;
   
   import android.bluetooth.IBluetoothCallback;
   import android.os.ParcelUuid;
   
   /**
     * System private API for talking with the Bluetooth service.
     *
     * {@hide}
     */
    interface IBluetooth
    {
      boolean isEnabled();
      int getBluetoothState();
      boolean enable();
      boolean disable(boolean persistSetting);
   
      String getAddress();
      String getName();
      boolean setName(in String name);
   
      int getScanMode();
      boolean setScanMode(int mode, int duration);
   
      int getDiscoverableTimeout();
      boolean setDiscoverableTimeout(int timeout);
   
      boolean startDiscovery();
      boolean cancelDiscovery();
      boolean isDiscovering();
   
      boolean createBond(in String address);
      boolean cancelBondProcess(in String address);
      boolean removeBond(in String address);
      String[] listBonds();
      int getBondState(in String address);
   
      String getRemoteName(in String address);
      int getRemoteClass(in String address);
      ParcelUuid[] getRemoteUuids(in String address);
      boolean fetchRemoteUuids(in String address, in ParcelUuid uuid, in IBluetoothCallback callback);
      int getRemoteServiceChannel(in String address, in ParcelUuid uuid);
   
      boolean setPin(in String address, in byte[] pin);
      boolean setPasskey(in String address, int passkey);
      boolean setPairingConfirmation(in String address, boolean confirm);
      boolean cancelPairingUserInput(in String address);
   
      boolean setTrust(in String address, in boolean value);
      boolean getTrustState(in String address);
   
      int addRfcommServiceRecord(in String serviceName, in ParcelUuid uuid, int channel, IBinder b);
      void removeServiceRecord(int handle);
   }
   

/************ IBluetoothCallback.aidl ************/

    package android.bluetooth;

    /**
     * System private API for Bluetooth service callbacks.
     *
     * {@hide}
     */
    interface IBluetoothCallback
    {
        void onRfcommChannelFound(int channel);
    }