How to get wifi direct devices name from WifiP2pDeviceList

Question

I want to get the wi-fi direct name when I execute request peers, here is my code:

if (WifiP2pManager.WIFI_P2P_PEERS_CHANGED_ACTION.equals(action)) {

    Log.d(tag, "success discover the peers ");

    if (mManager != null) {
        mManager.requestPeers(mChannel, new WifiP2pManager.PeerListListener() {

            @Override
            public void onPeersAvailable(WifiP2pDeviceList peers) {
                // TODO Auto-generated method stub

                if (peers != null) {
                    if (device.deviceName.equals("ABC")) {
                        Log.d(tag, "found device!!! ");

                        Toast.makeText(getApplicationContext(), "FOUND!!", Toast.LENGTH_SHORT).show();

                    }
                }
            }
        });
    } else {
        Log.d(tag, "mMaganger == null");
    }
}

I want to get the deviceName from the list of peers so that I can found that one named "ABC". Any idea?

what do you mean by **wifi-direct** name? You mean the [deviceName](http://developer.android.com/reference/android/net/wifi/p2p/WifiP2pDevice.html#deviceName)!!? coz device name is very straight forward to obtain... — Hariharan Gandhi, May 15 '15 at 12:22
I edited my qs, I want to find the deviceName from list of peers. But I can't figure out what wrong of my code. I can't get the expected result.. — user2301281, May 15 '15 at 12:38
Thanks for editing. I guessed so. Could you paste some more of your code to get exactly you are going wrong in getting the name ? I mean the part where you are trying to get the device name... — Hariharan Gandhi, May 15 '15 at 12:43

Ali · Accepted Answer · 2015-05-15T12:55:14.010

2

If you want others device name:

wifiP2pManager.requestPeers(wifiChannel, new WifiP2pManager.PeerListListener() {
        @Override
        public void onPeersAvailable(WifiP2pDeviceList wifiP2pDeviceList) {

            for (WifiP2pDevice device : wifiP2pDeviceList.getDeviceList())
            {
                if (device.deviceName.equals("ABC")) Log.d(tag, "found device!!! ");
                // device.deviceName
            }
        }
    });

If you want your device name get it in the receiver:

if (action.equals(WifiP2pManager.WIFI_P2P_THIS_DEVICE_CHANGED_ACTION))
{
    WifiP2pDevice device = intent.getParcelableExtra(WifiP2pManager.EXTRA_WIFI_P2P_DEVICE);
    // device.deviceName
}

If you want to change device name:

try {
    Method method = wifiP2pManager.getClass().getMethod("setDeviceName",
        WifiP2pManager.Channel.class, String.class, WifiP2pManager.ActionListener.class);

    method.invoke(wifiP2pManager, wifiChannel, "New Device Name", new WifiP2pManager.ActionListener() {
        public void onSuccess() {}

        public void onFailure(int reason) {}
    });
} catch (Exception e)   {}

edited May 15 '15 at 12:55

answered May 15 '15 at 12:49

Ali

21,572
15
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I think I had confused to get the own deviceName & other devices Name. Thanks for point it out. – user2301281 May 15 '15 at 12:56
@Ali very clearly explained. i just didn't want to give away code without him trying it, as it was easy to find :P :P cheers – Hariharan Gandhi May 15 '15 at 12:59
@user2301281 you're welcome. Please mark the answer if your satisfied. Thank you – Ali May 15 '15 at 13:00
@user2301281 I really suggest looking at WiFi Direct demo in android SDK. – Ali May 15 '15 at 13:02
@Ali, yes. I already looking & try the WifiDirectDemo in sample before. But inside the broadcast sample don't have the "onPeersAvailable()" part. So I can't get the idea. Sorry for my poor coding skills. & very thank you for clear the idea. =D – user2301281 May 15 '15 at 13:08
@user2301281 There is no need to perform to perform requestPeers or other WiFiP2P methods inside the receiver, you can just do it at the beginning of your activity or fragment. – Ali May 15 '15 at 13:21
@Ali, u mean without using requestPeers I can direct execute deviceName.equals("ABC")?? – user2301281 May 15 '15 at 13:30
@user2301281 No, it's clear that you don't have the peers if you don't request them first. My point is you can request peers anywhere, not just inside the wifi receiver. – Ali May 15 '15 at 14:11
@Ali, noted. Thanks for pointed out so many concept of wifi direct. It's really help me. =D – user2301281 May 15 '15 at 14:21

score 2 · Answer 2 · answered May 15 '15 at 12:51

2

You have the object for WifiP2pDeviceList(peers)

Call the method getDeviceList() on peers which returns a collection(list) of P2p devices Collection<WifiP2pDevice>

Then iterate through the collection element which is a WifiP2pDevice and it would contain the deviceName property which is what you need exactly.

Refer this training from android developers

Hope you are able to get it

answered May 15 '15 at 12:51

Hariharan Gandhi

1,174
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I can't really get the idea of "iterate through the collection element". Can you explain more detail? Sorry, i'm newbie. > – user2301281 May 15 '15 at 13:00
2

@user2301281 Since it contains a 'list' of devices, you need to run through each elements in the list to get it's deviceName. Refer to the `for` loop in @Ali's reply – Hariharan Gandhi May 15 '15 at 13:03
thanks. I think I more clear about it now. I will have a try. Thanks for your kindly suggestion. It really save my day. =DD – user2301281 May 15 '15 at 13:10

How to get wifi direct devices name from WifiP2pDeviceList

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