我想设计一个应用程序,显示可用的Wi-Fi网络列表,并连接到用户选择的任何网络。

我已经实现了显示扫描结果的部分。现在我想连接到用户从扫描结果列表中选择的特定网络。

我怎么做呢?


当前回答

感谢@raji-ramamoorthi和@kenota

对我有效的解决方案是在这个线程中结合以上贡献者。

获取ScanResult的过程如下。

WifiManager wifi = (WifiManager) getSystemService(Context.WIFI_SERVICE);
if (wifi.isWifiEnabled() == false) {
            Toast.makeText(getApplicationContext(), "wifi is disabled..making it enabled", Toast.LENGTH_LONG).show();
            wifi.setWifiEnabled(true);
        }

BroadcastReceiver broadcastReceiver = new BroadcastReceiver() {
            @Override
            public void onReceive(Context c, Intent intent) {
                 wifi.getScanResults();
            }
        };

注意在onPause和onStop上取消注册。

public void connectWiFi(ScanResult scanResult) {
        try {

            Log.v("rht", "Item clicked, SSID " + scanResult.SSID + " Security : " + scanResult.capabilities);

            String networkSSID = scanResult.SSID;
            String networkPass = "12345678";

            WifiConfiguration conf = new WifiConfiguration();
            conf.SSID = "\"" + networkSSID + "\"";   // Please note the quotes. String should contain ssid in quotes
            conf.status = WifiConfiguration.Status.ENABLED;
            conf.priority = 40;

            if (scanResult.capabilities.toUpperCase().contains("WEP")) {
                Log.v("rht", "Configuring WEP");    
                conf.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.NONE);
                conf.allowedProtocols.set(WifiConfiguration.Protocol.RSN);
                conf.allowedProtocols.set(WifiConfiguration.Protocol.WPA);
                conf.allowedAuthAlgorithms.set(WifiConfiguration.AuthAlgorithm.OPEN);
                conf.allowedAuthAlgorithms.set(WifiConfiguration.AuthAlgorithm.SHARED);
                conf.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.CCMP);
                conf.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.TKIP);
                conf.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.WEP40);
                conf.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.WEP104);

                if (networkPass.matches("^[0-9a-fA-F]+$")) {
                    conf.wepKeys[0] = networkPass;
                } else {
                    conf.wepKeys[0] = "\"".concat(networkPass).concat("\"");
                }

                conf.wepTxKeyIndex = 0;

            } else if (scanResult.capabilities.toUpperCase().contains("WPA")) {
                Log.v("rht", "Configuring WPA");

                conf.allowedProtocols.set(WifiConfiguration.Protocol.RSN);
                conf.allowedProtocols.set(WifiConfiguration.Protocol.WPA);
                conf.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.WPA_PSK);
                conf.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.CCMP);
                conf.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.TKIP);
                conf.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.WEP40);
                conf.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.WEP104);
                conf.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.CCMP);
                conf.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.TKIP);

                conf.preSharedKey = "\"" + networkPass + "\"";

            } else {
                Log.v("rht", "Configuring OPEN network");
                conf.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.NONE);
                conf.allowedProtocols.set(WifiConfiguration.Protocol.RSN);
                conf.allowedProtocols.set(WifiConfiguration.Protocol.WPA);
                conf.allowedAuthAlgorithms.clear();
                conf.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.CCMP);
                conf.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.TKIP);
                conf.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.WEP40);
                conf.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.WEP104);
                conf.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.CCMP);
                conf.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.TKIP);
            }

            WifiManager wifiManager = (WifiManager) WiFiApplicationCore.getAppContext().getSystemService(Context.WIFI_SERVICE);
            int networkId = wifiManager.addNetwork(conf);

            Log.v("rht", "Add result " + networkId);

            List<WifiConfiguration> list = wifiManager.getConfiguredNetworks();
            for (WifiConfiguration i : list) {
                if (i.SSID != null && i.SSID.equals("\"" + networkSSID + "\"")) {
                    Log.v("rht", "WifiConfiguration SSID " + i.SSID);

                    boolean isDisconnected = wifiManager.disconnect();
                    Log.v("rht", "isDisconnected : " + isDisconnected);

                    boolean isEnabled = wifiManager.enableNetwork(i.networkId, true);
                    Log.v("rht", "isEnabled : " + isEnabled);

                    boolean isReconnected = wifiManager.reconnect();
                    Log.v("rht", "isReconnected : " + isReconnected);

                    break;
                }
            }

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

其他回答

在连接WIFI网络之前,您需要检查WIFI网络的安全类型ScanResult类有一个功能。该字段提供网络类型

参考:https://developer.android.com/reference/android/net/wifi/ScanResult.html功能

有三种类型的WIFI网络。

首先,实例化一个wificconfiguration对象并填写网络的SSID(注意它必须用双引号括起来),将初始状态设置为禁用,并指定网络的优先级(40左右的数字似乎工作得很好)。

WifiConfiguration wfc = new WifiConfiguration();

wfc.SSID = "\"".concat(ssid).concat("\"");
wfc.status = WifiConfiguration.Status.DISABLED;
wfc.priority = 40;

现在是更复杂的部分:我们需要填充wiificconfiguration的几个成员来指定网络的安全模式。 对于开放网络。

wfc.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.NONE);
wfc.allowedProtocols.set(WifiConfiguration.Protocol.RSN);
wfc.allowedProtocols.set(WifiConfiguration.Protocol.WPA);
wfc.allowedAuthAlgorithms.clear();
wfc.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.CCMP);
wfc.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.TKIP);
wfc.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.WEP40);
wfc.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.WEP104);
wfc.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.CCMP);
wfc.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.TKIP);

对于使用WEP的网络;注意WEP密钥也包含在双引号中。

wfc.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.NONE);
wfc.allowedProtocols.set(WifiConfiguration.Protocol.RSN);
wfc.allowedProtocols.set(WifiConfiguration.Protocol.WPA);
wfc.allowedAuthAlgorithms.set(WifiConfiguration.AuthAlgorithm.OPEN);
wfc.allowedAuthAlgorithms.set(WifiConfiguration.AuthAlgorithm.SHARED);
wfc.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.CCMP);
wfc.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.TKIP);
wfc.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.WEP40);
wfc.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.WEP104);

if (isHexString(password)) wfc.wepKeys[0] = password;
else wfc.wepKeys[0] = "\"".concat(password).concat("\"");
wfc.wepTxKeyIndex = 0;

对于使用WPA和WPA2的网络,我们可以为其中任何一个设置相同的值。

wfc.allowedProtocols.set(WifiConfiguration.Protocol.RSN);
wfc.allowedProtocols.set(WifiConfiguration.Protocol.WPA);
wfc.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.WPA_PSK);
wfc.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.CCMP);
wfc.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.TKIP);
wfc.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.WEP40);
wfc.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.WEP104);
wfc.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.CCMP);
wfc.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.TKIP);

wfc.preSharedKey = "\"".concat(password).concat("\"");

最后,我们可以将该网络添加到WifiManager的已知列表中

WifiManager wfMgr = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);
int networkId = wfMgr.addNetwork(wfc);
if (networkId != -1) {
 // success, can call wfMgr.enableNetwork(networkId, true) to connect
} 

你需要像这样创建wiificconfiguration实例:

String networkSSID = "test";
String networkPass = "pass";

WifiConfiguration conf = new WifiConfiguration();
conf.SSID = "\"" + networkSSID + "\"";   // Please note the quotes. String should contain ssid in quotes

然后,对于WEP网络,你需要这样做:

conf.wepKeys[0] = "\"" + networkPass + "\""; 
conf.wepTxKeyIndex = 0;
conf.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.NONE);
conf.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.WEP40); 

对于WPA网络,您需要添加这样的密码短语:

conf.preSharedKey = "\""+ networkPass +"\"";

对于开放网络,你需要这样做:

conf.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.NONE);

然后,你需要将其添加到Android wifi管理器设置:

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

最后,你可能需要启用它,所以Android连接到它:

List<WifiConfiguration> list = wifiManager.getConfiguredNetworks();
for( WifiConfiguration i : list ) {
    if(i.SSID != null && i.SSID.equals("\"" + networkSSID + "\"")) {
         wifiManager.disconnect();
         wifiManager.enableNetwork(i.networkId, true);
         wifiManager.reconnect();               

         break;
    }           
 }

UPD:在WEP的情况下,如果您的密码是十六进制,您不需要用引号包围它。

我也试着连接到网络。 以上提出的解决方案都不适用于hugerock t70。 wifiManager.disconnect()函数;不断开当前网络。 Аnd因此不能重新连接到指定的网络。 我修改了上面的代码。 对我来说,代码bolow工作完美:

String networkSSID = "test";
String networkPass = "pass";

WifiConfiguration conf = new WifiConfiguration();
conf.SSID = "\"" + networkSSID + "\"";   
conf.wepKeys[0] = "\"" + networkPass + "\""; 
conf.wepTxKeyIndex = 0;
conf.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.NONE);
conf.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.WEP40); 
conf.preSharedKey = "\""+ networkPass +"\"";

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

int networkId = wifiManager.addNetwork(conf);
wifi_inf = wifiManager.getConnectionInfo();

/////important!!!
wifiManager.disableNetwork(wifi_inf.getNetworkId());
/////////////////

wifiManager.enableNetwork(networkId, true);

在API级别29中,WifiManager.enableNetwork()方法已弃用。根据Android API文档(点击这里查看):

请参阅WifiNetworkSpecifier.Builder#build()了解触发连接到Wi-Fi网络的新机制。 参见addnetworkrecommendations (java.util.List), removenetworkrecommendations (java.util.List)获取添加Wi-Fi的新API 当自动连接到wifi时,考虑网络。兼容性 注意:对于以Build.VERSION_CODES为目标的应用程序。Q或以上,这个 API总是返回false。

从API级别29开始,要连接到WiFi网络,您将需要使用WifiNetworkSpecifier。您可以在https://developer.android.com/reference/android/net/wifi/WifiNetworkSpecifier.Builder.html#build(上找到示例代码)

试试这个方法。这很简单:

public static boolean setSsidAndPassword(Context context, String ssid, String ssidPassword) {
    try {
        WifiManager wifiManager = (WifiManager) context.getSystemService(context.WIFI_SERVICE);
        Method getConfigMethod = wifiManager.getClass().getMethod("getWifiApConfiguration");
        WifiConfiguration wifiConfig = (WifiConfiguration) getConfigMethod.invoke(wifiManager);

        wifiConfig.SSID = ssid;
        wifiConfig.preSharedKey = ssidPassword;

        Method setConfigMethod = wifiManager.getClass().getMethod("setWifiApConfiguration", WifiConfiguration.class);
        setConfigMethod.invoke(wifiManager, wifiConfig);

        return true;
    } catch (Exception e) {
        e.printStackTrace();
        return false;
    }
}