Question

我想在发现时过滤蓝牙设备，并且只保留同一软件开始监听的内容。例如，Android示例BluetoothChat，它应该只显示那些由BluetoothChat启动的蓝牙设备。

这是我的代码。

public class DeviceListActivity extends Activity
{
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        // Setup UI here
        ......

        // Register for broadcasts when a device is discovered
        IntentFilter filter = new IntentFilter(BluetoothDevice.ACTION_FOUND);
        this.registerReceiver(mReceiver, filter);

        // Register for broadcasts when discovery has finished
        filter = new IntentFilter(BluetoothAdapter.ACTION_DISCOVERY_FINISHED);
        this.registerReceiver(mReceiver, filter);

        // Get the local Bluetooth adapter
        mBtAdapter = BluetoothAdapter.getDefaultAdapter();

        // Request discover from BluetoothAdapter
        mBtAdapter.startDiscovery();
    }

    // The BroadcastReceiver that listens for discovered devices and
    // changes the title when discovery is finished
    private final BroadcastReceiver mReceiver = new BroadcastReceiver() {
        @Override
        public void onReceive(Context context, Intent intent) {
            String action = intent.getAction();

            // When discovery finds a device
            if (BluetoothDevice.ACTION_FOUND.equals(action)) {
                // Get the BluetoothDevice object from the Intent
                BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);

                // *** My problem is here. I got a BluetoothDevice now, but how can I
                // *** check whether it is created by my software?
                // *** if I can't, I have to add all of them to my list, and when user
                // *** chooses it, connection will fail if it's not created by my software.
                mNewDevicesArrayAdapter.add(device.getName() + "\n" + device.getAddress());
            }
            // When discovery is finished, change the Activity title
            } else if (BluetoothAdapter.ACTION_DISCOVERY_FINISHED.equals(action)) {
                // Discovery is finished...
                // wrap up code here...
                ......
            }
        }
    };
}

Answer 1

你可以做一件事：

使用软件启动蓝牙时，请将蓝牙名称更改为特定模式，以便识别设备是否由您的软件启动。

然后在搜索蓝牙设备时，检查您在搜索时遇到的蓝牙设备名称是否属于您定义的模式。

更改设备名称：

Change the Android bluetooth device name

如何在发现时过滤BluetoothDevice

1 个答案: