Question

嗨，我知道这个问题需要很多时间，但非主题帮助我消除了我的问题我想在设备中创建热点并从其他设备连接到它并通过wifi发送数据。

问题第一次我可以连接到我的热点并通过它传输数据，但是在热点禁用的时候，我再次创建它，直到我重新启动客户端电话才能连接到该网络。
这是连接到热点的代码

addWifiConfig(HotspotName, Hotspotpass, "WPA", "");

WifiManager wifiManager = (WifiManager)context.getSystemService(Context.WIFI_SERVICE); 
List<WifiConfiguration> list = wifiManager.getConfiguredNetworks();
for( WifiConfiguration i : list ) {
            if(i.SSID != null && i.SSID.equals("\"" + HotspotName + "\"")) {
                try { 
                    wifiManager.disconnect();

                    wifiManager.enableNetwork(i.networkId, true);
                    boolean res=wifiManager.reconnect(); 

                } 
                catch (Exception e) {
                    e.printStackTrace();
                } 

            }            
        }

addWifiConfig methode

 public static void addWifiConfig(String ssid,String password,String securityParam,String securityDetailParam) {

        if (ssid == null) {
            throw new IllegalArgumentException(
                    "Required parameters can not be NULL #"); 
        } 

        String wifiName = ssid;
        WifiConfiguration conf = new WifiConfiguration();
        if (Build.VERSION.SDK_INT >= 21) {
            conf.SSID = wifiName;
        } else { 
            conf.SSID = "\"" + wifiName + "\"";
        } 
        String security = securityParam;

        if (security.equalsIgnoreCase("WEP")) {
            conf.wepKeys[0] = password;
            conf.wepTxKeyIndex = 0;
            conf.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.NONE);
            conf.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.WEP40);
        } else if (security
                .equalsIgnoreCase("NONE")) {
            conf.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.NONE);
        } else if ("WPA" 
                .equalsIgnoreCase(security)
                || "WPA2" 
                        .equalsIgnoreCase(security)
                || "WPA/WPA2 PSK" 
                        .equalsIgnoreCase(security)) {
            // appropriate ciper is need to set according to security type used, 
            // ifcase of not added it will not be able to connect 
            conf.preSharedKey = "\""
                    + password + "\"";
            conf.allowedProtocols.set(WifiConfiguration.Protocol.RSN);
            conf.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.WPA_PSK);
            conf.status = WifiConfiguration.Status.ENABLED;
            conf.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.TKIP);
            conf.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.CCMP);
            conf.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.WPA_PSK);
            conf.allowedPairwiseCiphers
                    .set(WifiConfiguration.PairwiseCipher.TKIP);
            conf.allowedPairwiseCiphers
                    .set(WifiConfiguration.PairwiseCipher.CCMP);
            conf.allowedProtocols.set(WifiConfiguration.Protocol.RSN);
            conf.allowedProtocols.set(WifiConfiguration.Protocol.WPA);
        } 
        String securityDetails = securityDetailParam;

        conf.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.WEP104);
        conf.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.WEP40);


        WifiManager wifiManager = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);



        int newNetworkId = wifiManager.addNetwork(conf);
            wifiManager.saveConfiguration();
            wifiManager.setWifiEnabled(true);
    }

这是我在第二次尝试连接时遇到的错误

 java.net.ConnectException: failed to connect to /192.168.43.80 (port 8080): 

connect failed: ECONNREFUSED (Connection refused)
at libcore.io.IoBridge.connect(IoBridge.java:114)
at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:192)
at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172)
at java.net.Socket.startupSocket(Socket.java:566)
at java.net.Socket.tryAllAddresses(Socket.java:128)
at java.net.Socket.<init>(Socket.java:178)
at java.net.Socket.<init>(Socket.java:150)
at drawerfragments.SettingsFragment$MyClientTask.doInBackground(SettingsFragment.java:477)
at drawerfragments.SettingsFragment$MyClientTask.doInBackground(SettingsFragment.java:1)
at android.os.AsyncTask$2.call(AsyncTask.java:288)
at java.util.concurrent.FutureTask.run(FutureTask.java:237)
at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:231)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587)
at java.lang.Thread.run(Thread.java:841)
Caused by: libcore.io.ErrnoException: connect failed: ECONNREFUSED (Connection refused)
at libcore.io.Posix.connect(Native Method)
at libcore.io.BlockGuardOs.connect(BlockGuardOs.java:85)
at libcore.io.IoBridge.connectErrno(IoBridge.java:127)
at libcore.io.IoBridge.connect(IoBridge.java:112)
... 14 more

在android中以编程方式连接到热点

0 个答案: