Question

我正在尝试在Android和蓝牙模块之间建立连接。我按照http://developer.android.com/guide/topics/connectivity/bluetooth.html的说明操作在“发现”之后，我将找到的设备放入一个ListView，它有一个注册的OnItemClickListener。

我现在的问题是，我需要点击条目中的BluetoothDevice才能在下一步建立连接。我所拥有的只是ListView中的位置ID和Set<BluetoothDevice>。但我不知道如何从集合中提取特定的BluetoothDevice。

到目前为止，这是我的代码。谢谢！

ProgressBar spinWheel;
ListView devList;
BluetoothAdapter btAdapter;
ArrayAdapter<String> lvAdapter;
BroadcastReceiver mReceiver;
Set<BluetoothDevice> pairedDevices;

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.searchlist);
    spinWheel = (ProgressBar)findViewById(R.id.progressBar1);
    btAdapter = BluetoothAdapter.getDefaultAdapter();
    devList = (ListView)findViewById(R.id.devicelist);
    lvAdapter = new ArrayAdapter<String>(getApplicationContext(),
            R.layout.simplerow, R.id.simpleRow);
    devList.setAdapter(lvAdapter);
    devList.setOnItemClickListener(new OnItemClickListener() {

        public void onItemClick(AdapterView<?> parentView, View childView, int position,
                long id) {
            //establish Connection, need the clicked BluetoothDevice
        }
    });

    //gepaarte Geräte in die ListView
    pairedDevices = btAdapter.getBondedDevices();
    //If there are paired devices
    if (pairedDevices.size() > 0) {
        // Loop through paired devices
        for (BluetoothDevice device : pairedDevices) {
            // Add the name and address to an array adapter to show in a ListView
            lvAdapter.add(device.getName() + "\n"+ "#"+ device.getAddress());
        }
    }

    // Create a BroadcastReceiver for ACTION_FOUND
        mReceiver = new BroadcastReceiver() {
        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);
                // Add the name and address to an array adapter to show in a ListView
                lvAdapter.add(device.getName() + "\n" + device.getAddress());
                pairedDevices.add(device);
            }
        }
    };
    // Register the BroadcastReceiver
    IntentFilter filter = new IntentFilter(BluetoothDevice.ACTION_FOUND);
    registerReceiver(mReceiver, filter); // Don't forget to unregister during onDestroy
    btAdapter.startDiscovery();
    }

@Override
public void onDestroy(){
    super.onDestroy();
    unregisterReceiver(mReceiver);
}

}

Answer 1

我自己解决了这个问题，但我想发布它来帮助别人。我使用了函数BluetoothAdapter.getRemoteDevice（String adress）。当插入String中的地址从ListView中插入时，拆分为“＃”。

public void onItemClick(AdapterView<?> parentView, View childView, int position,
                long id) {
            String[] separated = lvAdapter.getItem(position).split("#");
            if(btAdapter.checkBluetoothAddress(separated[1])==true){
            devtoconnect = btAdapter.getRemoteDevice(separated[1]);
            }
        }
    });

尽管如此，感谢您对其他问题的帮助！

从Set访问蓝牙设备

1 个答案: