How to know whether android shortcut already exist ex.

How to know whether android shortcut already exist
ex.

public void createShortcut(String url,String shortcutName, String type, Bitmap img)
    {           
        Intent shortcutIntent = new Intent();       
        shortcutIntent.setAction(Intent.ACTION_VIEW);

        if(type.equalsIgnoreCase("web")) {  

            Uri uri = Uri.parse(url);
            shortcutIntent.setData(uri);
        }
        else if (type.equalsIgnoreCase("app")) {

            Log.d("DEBUGGING", "Inside app installation " + url + " : " + group + " : " + shortcutName); 
            shortcutIntent.setClassName(url,group);
        }

        shortcutIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
        shortcutIntent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);

        Intent addIntent = new Intent();
        addIntent.putExtra(Intent.EXTRA_SHORTCUT_INTENT, shortcutIntent);
        addIntent.putExtra(Intent.EXTRA_SHORTCUT_NAME, shortcutName);
        addIntent.putExtra("duplicate", false);
        addIntent.putExtra(Intent.EXTRA_SHORTCUT_ICON, scaledBitmap);
      //  addIntent.putExtra(Intent.EXTRA_SHORTCUT_ICON_RESOURCE, R.drawable.ic_launcher);

        addIntent.setAction("com.android.launcher.action.INSTALL_SHORTCUT");
        sendBroadcast(addIntent);
//        Toast mToast = Toast.makeText(this, "shortcut created", Toast.LENGTH_SHORT);
//        mToast.show();

    }

How to programmatically pair a bluetooth device on Android

Programmatically pair a bluetooth device on Android:

public void pairDevice(BluetoothDevice device) {
        String ACTION_PAIRING_REQUEST = "android.bluetooth.device.action.PAIRING_REQUEST";
        Intent intent = new Intent(ACTION_PAIRING_REQUEST);
        String EXTRA_DEVICE = "android.bluetooth.device.extra.DEVICE";
        intent.putExtra(EXTRA_DEVICE, device);
        String EXTRA_PAIRING_VARIANT = "android.bluetooth.device.extra.PAIRING_VARIANT";
        int PAIRING_VARIANT_PIN = 0;
        intent.putExtra(EXTRA_PAIRING_VARIANT, PAIRING_VARIANT_PIN);
        intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
        context.startActivity(intent);
    }

Intent intent = new Intent(BluetoothDevice.ACTION_PAIRING_REQUEST);
intent.putExtra(EXTRA_DEVICE, device);
int PAIRING_VARIANT_PIN = 272;
intent.putExtra(BluetoothDevice.EXTRA_PAIRING_VARIANT, PAIRING_VARIANT_PIN);
sendBroadcast(intent);

Intent intent = new Intent(Settings.ACTION_BLUETOOTH_SETTINGS);
    startActivityForResult(intent, REQUEST_PAIR_DEVICE);