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 
17 package com.android.settingslib.deviceinfo;
18 
19 import android.annotation.SuppressLint;
20 import android.bluetooth.BluetoothAdapter;
21 import android.content.Context;
22 import android.text.TextUtils;
23 
24 import androidx.annotation.VisibleForTesting;
25 import androidx.preference.Preference;
26 import androidx.preference.PreferenceScreen;
27 
28 import com.android.settingslib.R;
29 import com.android.settingslib.core.lifecycle.Lifecycle;
30 
31 /**
32  * Preference controller for bluetooth address
33  */
34 public abstract class AbstractBluetoothAddressPreferenceController
35         extends AbstractConnectivityPreferenceController {
36 
37     @VisibleForTesting
38     static final String KEY_BT_ADDRESS = "bt_address";
39 
40     private static final String[] CONNECTIVITY_INTENTS = {
41             BluetoothAdapter.ACTION_STATE_CHANGED
42     };
43 
44     private Preference mBtAddress;
45 
AbstractBluetoothAddressPreferenceController(Context context, Lifecycle lifecycle)46     public AbstractBluetoothAddressPreferenceController(Context context, Lifecycle lifecycle) {
47         super(context, lifecycle);
48     }
49 
50     @Override
isAvailable()51     public boolean isAvailable() {
52         return BluetoothAdapter.getDefaultAdapter() != null;
53     }
54 
55     @Override
getPreferenceKey()56     public String getPreferenceKey() {
57         return KEY_BT_ADDRESS;
58     }
59 
60     @Override
displayPreference(PreferenceScreen screen)61     public void displayPreference(PreferenceScreen screen) {
62         super.displayPreference(screen);
63         mBtAddress = screen.findPreference(KEY_BT_ADDRESS);
64         updateConnectivity();
65     }
66 
67     @Override
getConnectivityIntents()68     protected String[] getConnectivityIntents() {
69         return CONNECTIVITY_INTENTS;
70     }
71 
72     @SuppressLint("HardwareIds")
73     @Override
updateConnectivity()74     protected void updateConnectivity() {
75         BluetoothAdapter bluetooth = BluetoothAdapter.getDefaultAdapter();
76         if (bluetooth != null && mBtAddress != null) {
77             String address = bluetooth.isEnabled() ? bluetooth.getAddress() : null;
78             if (!TextUtils.isEmpty(address)) {
79                 // Convert the address to lowercase for consistency with the wifi MAC address.
80                 mBtAddress.setSummary(address.toLowerCase());
81             } else {
82                 mBtAddress.setSummary(R.string.status_unavailable);
83             }
84         }
85     }
86 }
87