1 package com.android.car.messenger.bluetooth;
2 
3 import android.app.PendingIntent;
4 import android.bluetooth.BluetoothAdapter;
5 import android.bluetooth.BluetoothDevice;
6 import android.bluetooth.BluetoothMapClient;
7 import android.net.Uri;
8 
9 import androidx.annotation.NonNull;
10 import androidx.annotation.Nullable;
11 
12 import java.util.Collections;
13 import java.util.Set;
14 
15 /**
16  * Provides helper methods for performing bluetooth actions.
17  */
18 public class BluetoothHelper {
19 
20     /**
21      * Returns a (potentially empty) immutable set of bonded (paired) devices.
22      */
getPairedDevices()23     public static Set<BluetoothDevice> getPairedDevices() {
24         BluetoothAdapter adapter = BluetoothAdapter.getDefaultAdapter();
25 
26         if (adapter != null) {
27             Set<BluetoothDevice> devices = adapter.getBondedDevices();
28             if (devices != null) {
29                 return devices;
30             }
31         }
32 
33         return Collections.emptySet();
34     }
35 
36     /**
37      * Helper method to send an SMS message through bluetooth.
38      *
39      * @param client the MAP Client used to send the message
40      * @param deviceAddress the device used to send the SMS
41      * @param contacts contacts to send the message to
42      * @param message message to send
43      * @param sentIntent callback issued once the message was sent
44      * @param deliveredIntent callback issued once the message was delivered
45      * @return true if the message was enqueued, false on error
46      * @throws IllegalArgumentException if deviceAddress is invalid
47      */
sendMessage(@onNull BluetoothMapClient client, String deviceAddress, Uri[] contacts, String message, @Nullable PendingIntent sentIntent, @Nullable PendingIntent deliveredIntent)48     public static boolean sendMessage(@NonNull BluetoothMapClient client,
49             String deviceAddress,
50             Uri[] contacts,
51             String message,
52             @Nullable PendingIntent sentIntent,
53             @Nullable PendingIntent deliveredIntent)
54             throws IllegalArgumentException {
55 
56         BluetoothAdapter adapter = BluetoothAdapter.getDefaultAdapter();
57         if (adapter == null) {
58             return false;
59         }
60         BluetoothDevice device = adapter.getRemoteDevice(deviceAddress);
61 
62         return client.sendMessage(device, contacts, message, sentIntent, deliveredIntent);
63     }
64 }
65