几个月前，我开始开发一些 WiFi-Direct 应用程序。几天前，我将我的两个 Galaxy Nexus 都更新为 Jelly Bean (4.1.x) 并测试了我的应用程序，但似乎又出现了问题。获得主要功能集已经很痛苦了在 ICS 上，但现在它不再工作了。

我得到的只是我的 logcat 中的类似内容:

/wpa_supplicant(  392): p2p0: P2P-PROV-DISC-PBC-REQ a2:0b:ba:xy:zz:xx p2p_dev_addr=a2:0b:ba:xy:zz:xx pri_dev_type=10-0050F204-x name='Android_e9f0' config_methods=0x188 dev_capab=0x27 group_capab=0x0
I/wpa_supplicant(  392): p2p0: P2P-DEVICE-FOUND a2:0b:ba:xy:zz:xx p2p_dev_addr=a2:0b:ba:xy:zz:xx pri_dev_type=10-0050F204-5 name='Android_e9f0' config_methods=0x188 dev_capab=0x27 group_capab=0x0
I/wpa_supplicant(  392): p2p0: P2P-GO-NEG-REQUEST a2:0b:ba:xx:zz:xy dev_passwd_id=4
I/wpa_supplicant(  392): p2p0: P2P-FIND-STOPPED 
I/wpa_supplicant(  392): p2p0: P2P-GO-NEG-FAILURE status=7
W/Netd    (  120): No subsystem found in netlink event
D/NetlinkEvent(  120): Unexpected netlink message. type=0x11
I/wpa_supplicant(  392): p2p0: P2P-DEVICE-LOST p2p_dev_addr=a2:0b:ba:xx:zz:xy
I/wpa_supplicant(  392): p2p0: P2P-DEVICE-FOUND a2:0b:ba:xx:zz:xy p2p_dev_addr=a2:0b:ba:xx:zz:xy pri_dev_type=10-0050F204-5 name='Android_e9f0' config_methods=0x188 dev_capab=0x27 group_capab=0x0

“邀请对话框”在第二部手机上正确弹出，并且“有时”(随机)它甚至有效，但仅在每五次尝试或其他情况下才会出现。所以 logcat 告诉我，因为我不是 android-intern 代码的专业人士，协商只是失败了，设备丢失了一小会儿，然后又被发现了，看起来有点乱。

我的邀请是这样发出来的:

public void onPeersAvailable(WifiP2pDeviceList peers) {
    if (isInvitationSent)
        return;
    for (WifiP2pDevice dev : peers.getDeviceList()) {
        WifiP2pConfig c = new WifiP2pConfig();
        c.deviceAddress = dev.deviceAddress;
        c.wps.setup = WpsInfo.PBC;

        if (initiator
                && !isInvitationSent
                && WiFiSupport.compareMacAddressesInsensitive(MAC_ADDRESS,
                        dev.deviceAddress)) {
            isInvitationSent = true;
            sendInvitation(c);
        }
    }
}

private void sendInvitation(final WifiP2pConfig config) {
    log("Sending invitation to " + config.deviceAddress);
    mWifiManager.connect(mChannel, config, new ActionListener() {
        @Override
        public void onSuccess() {
            log("Invitation sent!");
        }

        @Override
        public void onFailure(int reason) {
            log("Invitation failed!");
            Toast.makeText(getApplicationContext(), "Could not connect to peer, reason:"+reason, Toast.LENGTH_LONG).show();
            if (!retryChannel) {
                log("Retrying to send invitation.");
                retryChannel = true;
                sendInvitation(config);
            }
        }
    });
}

我在 android 上阅读了很多关于 wifi direct 的文章，在我将手机更新为 jelly bean 之前，它一直运行良好。任何人都知道，哪里出了问题？如果您需要更多代码示例或代码的任何特定部分，请告诉我，因为我不知道什么是可靠的。

感谢您的帮助。

编辑:

将 WifiP2pConfig.wps.setup 方法更改为“显示”，这导致设备 #1 显示 PIN 码，设备 #2 弹出带有输入字段的对话框 - 输入正确的 PIN 码后，这是 logcat 告诉我的:

08-31 15:13:28.241: I/wpa_supplicant(384): p2p0: P2P-GO-NEG-SUCCESS 
08-31 15:13:28.241: I/wpa_supplicant(384): rfkill: Cannot open RFKILL control device
08-31 15:13:29.850: W/wpa_supplicant(384): p2p-p2p0-3: Could not connect to kernel driver
08-31 15:13:30.264: E/wpa_supplicant(384): Using interface p2p-p2p0-3 with hwaddr a2:0b:ba:x:y:z and ssid 'DIRECT-ps-Android_e9f0'
08-31 15:13:30.491: I/wpa_supplicant(384): p2p-p2p0-3: CTRL-EVENT-CONNECTED - Connection to a2:0b:ba:x:y:z completed (auth) [id=0 id_str=]
08-31 15:13:43.491: I/wpa_supplicant(384): p2p0: P2P-GROUP-FORMATION-FAILURE 
08-31 15:13:43.491: I/wpa_supplicant(384): p2p0: P2P-GROUP-REMOVED p2p-p2p0-3 GO
08-31 15:13:43.491: W/wpa_supplicant(384): p2p-p2p0-3: Could not connect to kernel driver
08-31 15:13:44.061: E/wpa_supplicant(384): Failed to remove interface (ifidx=15)
08-31 15:13:44.178: W/Netd(120): No subsystem found in netlink event
08-31 15:13:44.178: D/NetlinkEvent(120): Unexpected netlink message. type=0x11
08-31 15:13:44.248: W/Netd(120): No subsystem found in netlink event
08-31 15:13:44.248: D/NetlinkEvent(120): Unexpected netlink message. type=0x11
08-31 15:13:44.280: I/wpa_supplicant(384): p2p0: P2P-DEVICE-LOST p2p_dev_addr=a2:0b:ba:x:y:z
08-31 15:13:46.155: I/wpa_supplicant(384): p2p0: P2P-DEVICE-FOUND a2:0b:ba:x:y:z p2p_dev_addr=a2:0b:ba:x:y:z pri_dev_type=10-0050F204-5 name='Android_755f' config_methods=0x188 dev_capab=0x27 group_capab=0x0

有趣的是: 08-31 15:13:43.491: W/wpa_supplicant(384): p2p-p2p0-3: 无法连接到内核驱动程序

我觉得。在我看来，这像是 Android 自己的 wifi-direct-framework 中的错误？

最佳答案

为了将此问题标记为已回答，我将复制我对此问题的“解决方案”:

似乎只有当你在另一个 wifi 网络中时，组形成才会失败，比如在你的家庭 wifi 中等等......所以 Android 无法禁用它 - 因此无法通过 WiFi Direct 连接。

我必须确保这些设备不在 wifi 网络中。

关于android - JellyBean 上的 WiFi-Direct，WPA 请求者搞砸了，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/12216085/