Android: How to get current device WiFi-direct name

Question

In a P2P setting, I understand how to get another device's name, but how do I get my own device's name? (the one displayed in WiFi-direct under settings).

I have checked WiFiManager, WiFiInfo, and more with no success.

Not sure what to add... all I want to do is access the device's name, similar to in Bluetooth where you'd call `BluetoothAdapter.getDefaultAdapter().getName()` — Daiwik Daarun, Oct 30 '14 at 02:34
`WifiP2pDevice.deviceName` ? See [this](http://developer.android.com/training/connect-devices-wirelessly/nsd-wifi-direct.html) — Raptor, Oct 30 '14 at 03:07
Unforunately no - I chose to just store a "app-specific" Wi-Fi Direct password that would be broadcasted when hosting a Wi-Fi group — Daiwik Daarun, Jan 27 '15 at 19:31

score 13 · Answer 1 · answered Nov 18 '14 at 14:51

13

After you turn on wifi on your device, it is send a WIFI_P2P_THIS_DEVICE_CHANGED_ACTION broadcast. You can catch this with a broadcast receiver and you can get a WifiP2pDevice object, that is your device.

 @Override
 public void onReceive(Context context, Intent intent) {
     WifiP2pDevice device = intent.getParcelableExtra(WifiP2pManager.EXTRA_WIFI_P2P_DEVICE);
     String thisDeviceName = device.deviceName;
 }

answered Nov 18 '14 at 14:51

László Magyar

355
1
16

1

You will get this call when you register for the WifiP2pBroadcastReceiver, it doesn't matter if wifi is already on. – Jonathan Feb 11 '15 at 22:41
1

`device` is null, hence getting `NullPointerException` – Touhid Jul 13 '17 at 14:29

score 0 · Answer 2 · answered Oct 30 '14 at 06:41

Try this code:

public static String getHostName(String defValue) {
    try {
        Method getString = Build.class.getDeclaredMethod("getString", String.class);
        getString.setAccessible(true);
        return getString.invoke(null, "net.hostname").toString();
    } catch (Exception ex) {
        return defValue;
    }
}

score 0 · Answer 3 · answered Aug 11 '18 at 17:50

Simply in your broadcast receiver,

 if (WifiP2pManager.WIFI_P2P_THIS_DEVICE_CHANGED_ACTION.equals(action)) { 
        WifiP2pDevice myDevice =(WifiP2pDevice)intent.getParcelableExtra(WifiP2pManager.EXTRA_WIFI_P2P_DEVICE);
        Log.d("Wifi Direct: My Device",myDevice.devicename); 
    }

score 0 · Answer 4 · answered Aug 11 '22 at 19:00

0

Once you got the manager, you can use WifiP2pManager.requestDeviceinfo() with the DeviceInfoListener

mManager.requestDeviceInfo(mChannel, wifiP2pDevice -> String deviceName = wifiP2pDevice.deviceName));

But it's only available from API29

answered Aug 11 '22 at 19:00

Benjamin Kielinski

21
4

Android: How to get current device WiFi-direct name

4 Answers4

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