1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
|
/*
* Copyright (C) 2016 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 com.android.car.dialer;
import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothDevice;
import android.bluetooth.BluetoothHeadsetClient;
import android.bluetooth.BluetoothProfile;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.util.Log;
import java.util.List;
import java.util.concurrent.CopyOnWriteArrayList;
/**
* Class that responsible for getting status of bluetooth connections.
*/
public class UiBluetoothMonitor {
private static String TAG = "Em.BtMonitor";
private List<Listener> mListeners = new CopyOnWriteArrayList<>();
private final Context mContext;
private final BluetoothAdapter mBluetoothAdapter;
private final BluetoothBroadcastReceiver mBluetoothBroadcastReceiver;
UiBluetoothMonitor(Context context) {
mContext = context;
mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
mBluetoothBroadcastReceiver = new BluetoothBroadcastReceiver();
}
public void tearDown() {
mBluetoothBroadcastReceiver.tearDown();
}
public boolean isBluetoothEnabled() {
return mBluetoothAdapter != null && mBluetoothAdapter.isEnabled();
}
public boolean isHfpConnected() {
if (mBluetoothAdapter == null) {
return false;
}
return mBluetoothAdapter.getProfileConnectionState(BluetoothProfile.HEADSET_CLIENT)
== BluetoothProfile.STATE_CONNECTED;
}
public boolean isBluetoothPaired() {
return mBluetoothAdapter != null && mBluetoothAdapter.getBondedDevices().size() > 0;
}
public void addListener(Listener listener) {
if (Log.isLoggable(TAG, Log.DEBUG)) {
Log.d(TAG, "addListener: " + listener);
}
mListeners.add(listener);
}
protected void notifyListeners() {
for (Listener listener : mListeners) {
listener.onStateChanged();
}
}
public void removeListener(Listener listener) {
if (Log.isLoggable(TAG, Log.DEBUG)) {
Log.d(TAG, "removeListener: " + listener);
}
mListeners.remove(listener);
}
public interface Listener {
/**
* Calls when state of Bluetooth was changed, for example when Bluetooth was turned off or
* on, connection state was changed.
*/
void onStateChanged();
}
private final class BluetoothBroadcastReceiver extends BroadcastReceiver {
BluetoothBroadcastReceiver() {
IntentFilter filter = new IntentFilter();
filter.addAction(BluetoothAdapter.ACTION_CONNECTION_STATE_CHANGED);
filter.addAction(BluetoothDevice.ACTION_BOND_STATE_CHANGED);
filter.addAction(BluetoothHeadsetClient.ACTION_CONNECTION_STATE_CHANGED);
mContext.registerReceiver(this, filter);
}
@Override
public void onReceive(Context context, Intent intent) {
if (Log.isLoggable(TAG, Log.DEBUG)) {
Log.d(TAG, "Bluetooth broadcast intent action received: " + intent.getAction());
}
notifyListeners();
}
void tearDown() {
mContext.unregisterReceiver(this);
}
}
}
|
