Code snippets to reuse system Bluetooth Device Picker

BluetoothDeviceManager.java

package com.github.timnew.bluetooth;

import android.bluetooth.BluetoothDevice;
import android.bluetooth.BluetoothDevicePicker;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;

import com.googlecode.androidannotations.annotations.EBean;
import com.googlecode.androidannotations.annotations.RootContext;

@EBean
public class BluetoothDeviceManager implements BluetoothDevicePicker {
    @RootContext
    protected Context context;

    public void pickDevice(BluetoothDevicePickResultHandler handler) {
        context.registerReceiver(new BluetoothDeviceManagerReceiver(handler), new IntentFilter(ACTION_DEVICE_SELECTED));

        context.startActivity(new Intent(ACTION_LAUNCH)
                .putExtra(EXTRA_NEED_AUTH, false)
                .putExtra(EXTRA_FILTER_TYPE, FILTER_TYPE_ALL)
                .setFlags(Intent.FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS));
    }

    public static interface BluetoothDevicePickResultHandler {
        void onDevicePicked(BluetoothDevice device);
    }

    private static class BluetoothDeviceManagerReceiver extends BroadcastReceiver {

        private final BluetoothDevicePickResultHandler handler;

        public BluetoothDeviceManagerReceiver(BluetoothDevicePickResultHandler handler) {
            this.handler = handler;
        }

        @Override
        public void onReceive(Context context, Intent intent) {
            context.unregisterReceiver(this);

            BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);

            handler.onDevicePicked(device);
        }
    }
}

BluetoothDevicePicker.java

/*
 * Copyright (C) 2009 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package android.bluetooth;

/**
 * A helper to show a system "Device Picker" activity to the user.
 *
 * @hide
 */
public interface BluetoothDevicePicker {
    public static final String EXTRA_NEED_AUTH = "android.bluetooth.devicepicker.extra.NEED_AUTH";
    public static final String EXTRA_FILTER_TYPE = "android.bluetooth.devicepicker.extra.FILTER_TYPE";
    public static final String EXTRA_LAUNCH_PACKAGE = "android.bluetooth.devicepicker.extra.LAUNCH_PACKAGE";
    public static final String EXTRA_LAUNCH_CLASS = "android.bluetooth.devicepicker.extra.DEVICE_PICKER_LAUNCH_CLASS";

    /**
     * Broadcast when one BT device is selected from BT device picker screen.
     * Selected {@link BluetoothDevice} is returned in extra data named
     * {@link BluetoothDevice#EXTRA_DEVICE}.
     */
    public static final String ACTION_DEVICE_SELECTED = "android.bluetooth.devicepicker.action.DEVICE_SELECTED";

    /**
     * Broadcast when someone want to select one BT device from devices list.
     * This intent contains below extra data:
     * - {@link #EXTRA_NEED_AUTH} (boolean): if need authentication
     * - {@link #EXTRA_FILTER_TYPE} (int): what kinds of device should be
     * listed
     * - {@link #EXTRA_LAUNCH_PACKAGE} (string): where(which package) this
     * intent come from
     * - {@link #EXTRA_LAUNCH_CLASS} (string): where(which class) this intent
     * come from
     */
    public static final String ACTION_LAUNCH = "android.bluetooth.devicepicker.action.LAUNCH";

    /**
     * Ask device picker to show all kinds of BT devices
     */
    public static final int FILTER_TYPE_ALL = 0;
    /**
     * Ask device picker to show BT devices that support AUDIO profiles
     */
    public static final int FILTER_TYPE_AUDIO = 1;
    /**
     * Ask device picker to show BT devices that support Object Transfer
     */
    public static final int FILTER_TYPE_TRANSFER = 2;
    /**
     * Ask device picker to show BT devices that support
     * Personal Area Networking User (PANU) profile
     */
    public static final int FILTER_TYPE_PANU = 3;
    /**
     * Ask device picker to show BT devices that support Network Access Point (NAP) profile
     */
    public static final int FILTER_TYPE_NAP = 4;
}

Is there an Intent filter for when no device is selected? Say, when the user presses the back button. Something like "android.bluetooth.devicepicker.action.DEVICE_NOT_SELECTED"?