1/*
2 * Copyright (C) 2017 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package com.google.android.car.obd2app;
18
19import android.bluetooth.BluetoothAdapter;
20import android.bluetooth.BluetoothDevice;
21import android.content.Context;
22import android.preference.ListPreference;
23import android.util.AttributeSet;
24
25import java.util.ArrayList;
26import java.util.List;
27
28public class BluetoothPreference extends ListPreference {
29    private static final class DeviceEntry {
30        private final String mName;
31        private final String mAddress;
32
33        DeviceEntry(BluetoothDevice device) {
34            mAddress = device.getAddress();
35            if (device.getName() == null) {
36                mName = mAddress;
37            } else {
38                mName = device.getName();
39            }
40        }
41
42        String getName() {
43            return mName;
44        }
45
46        String getAddress() {
47            return mAddress;
48        }
49    }
50
51    public BluetoothPreference(Context context, AttributeSet attrs) {
52        super(context, attrs);
53
54        BluetoothAdapter defaultAdapter = BluetoothAdapter.getDefaultAdapter();
55        List<DeviceEntry> pairedDevices = new ArrayList<>();
56        defaultAdapter
57                .getBondedDevices()
58                .forEach((BluetoothDevice device) -> pairedDevices.add(new DeviceEntry(device)));
59        setEntries(pairedDevices.stream().map(DeviceEntry::getName).toArray(String[]::new));
60        setEntryValues(pairedDevices.stream().map(DeviceEntry::getAddress).toArray(String[]::new));
61    }
62
63    public BluetoothPreference(Context context) {
64        this(context, null);
65    }
66}
67