Android SDK Java - 在列表视图中列出蓝牙名称 [英] Android SDK Java - Listing Bluetooth names in a listview

问题描述

这是我的代码

this is my code

@Override
 protected void onCreate(Bundle savedInstanceState) {
     super.onCreate(savedInstanceState);
     setContentView(R.layout.activity_send_to);


     ListView lv1 = (ListView) findViewById(R.id.listViewBlueToothNames);



     Intent discoverableIntent = new
             Intent(BluetoothAdapter.ACTION_REQUEST_DISCOVERABLE);
             discoverableIntent.putExtra(BluetoothAdapter.EXTRA_DISCOVERABLE_DURATION, 300);
             startActivity(discoverableIntent);

  lv1.setAdapter(btArrayAdapter);

 }

 ArrayAdapter<String> btArrayAdapter;

      private final BroadcastReceiver 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
             btArrayAdapter.add(device.getName() + "\n" + device.getAddress());
         }
     }
 };

我完成了所有的进口和东西，问题是列表视图中没有任何东西出现，我我被要求接受我的蓝牙并且我说是的，但有人可以帮助我这样做，所以listview会显示所有可用的蓝牙名称吗？

ive done all the imports and stuff, the problem with this is that nothing is comming up in the listview, I do get asked to acesss my bluetooth and I say yes, but can some one please help me make it so the listview will show all the bluetooth names that are avalible?

推荐答案

您好，



请查看 http://android-er.blogspot.in/2011/05/get-list-of-paired-bluetooth-devices.html [ ^ ]或Bluettoh文档位于 http://developer.android.com/guide/topics/connectivity/bluetooth.html [ ^ ]。



要检索设备列表，您必须使用如下所示的代码（如下所示） 取自Android文档 ）。

Hello,

Please have a look at http://android-er.blogspot.in/2011/05/get-list-of-paired-bluetooth-devices.html[^] or Bluettoh documentation located at http://developer.android.com/guide/topics/connectivity/bluetooth.html[^].

To retrieve the list of devices you will have to use code something like one shown below (taken from the Android Documentation).

Set<bluetoothdevice> pairedDevices = mBluetoothAdapter.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
        mArrayAdapter.add(device.getName() + "\n" + device.getAddress());
    }
}</bluetoothdevice>

问候，

Regards,

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