Android wifi 連線上網
阿新 • • 發佈：2019-01-03
最近公司在做Wi-Fi連線上網，之間沒做過這方面的東西，查了好多資料終於搞明白了一些東西，這裡做一些記錄，下面是我的Wi-Fi連線測試程式碼工具類，這裡貼出來方便以後查閱，也希望能幫到一些遇到同樣需求的小夥伴。
import android.net.wifi.WifiConfiguration; import android.net.wifi.WifiConfiguration.AuthAlgorithm; import android.net.wifi.WifiConfiguration.KeyMgmt; import android.net.wifi.WifiEnterpriseConfig;連線Wi-Fi的工具類，上面的程式碼，當我呼叫的時候，是這樣寫的，如下：import android.net.wifi.WifiManager; import android.os.Handler; import android.os.Message; import android.text.TextUtils; import android.util.Log; import java.util.List; public class WifiAutoConnectManager { private static final String TAG = WifiAutoConnectManager.class .getSimpleName(); WifiManager wifiManager; Handler mHandler; public void sendMsg(String info) { if (mHandler != null) { Message msg = new Message(); msg.obj = info; mHandler.sendMessage(msg); } else { Log.e("wifi", info); } } public enum WifiCipherType { WIFICIPHER_WEP, WIFICIPHER_WPA, WIFICIPHER_NOPASS, WIFICIPHER_INVALID } public WifiAutoConnectManager(WifiManager wifiManager) { this.wifiManager = wifiManager; } public void connect(String ssid,String userName, String password, WifiCipherType type) { Thread thread = new Thread(new ConnectRunnable(ssid,userName, password, type)); thread.start(); } private WifiConfiguration isExsits(String SSID) { List<WifiConfiguration> existingConfigs = wifiManager .getConfiguredNetworks(); for (WifiConfiguration existingConfig : existingConfigs) { if (existingConfig.SSID.equals("\"" + SSID + "\"")) { return existingConfig; } } return null; } private WifiConfiguration createWifiInfo(String SSID, String Password, WifiCipherType Type) { WifiConfiguration config = new WifiConfiguration(); config.allowedAuthAlgorithms.clear(); config.allowedGroupCiphers.clear(); config.allowedKeyManagement.clear(); config.allowedPairwiseCiphers.clear(); config.allowedProtocols.clear(); config.SSID = "\"" + SSID + "\""; System.out.println("檢視config wepkey 內容:"+config.wepKeys); // nopass if (Type == WifiCipherType.WIFICIPHER_NOPASS) { // config.wepKeys[0] = ""; config.allowedKeyManagement.set(KeyMgmt.NONE); // config.wepTxKeyIndex = 0; } // wep if (Type == WifiCipherType.WIFICIPHER_WEP) { if (!TextUtils.isEmpty(Password)) { if (isHexWepKey(Password)) { config.wepKeys[0] = Password; } else { config.wepKeys[0] = "\"" + Password + "\""; } } config.allowedAuthAlgorithms.set(AuthAlgorithm.OPEN); config.allowedAuthAlgorithms.set(AuthAlgorithm.SHARED); config.allowedKeyManagement.set(KeyMgmt.NONE); config.wepTxKeyIndex = 0; } // wpa if (Type == WifiCipherType.WIFICIPHER_WPA) { config.preSharedKey = "\"" + Password + "\""; config.hiddenSSID = true; config.allowedAuthAlgorithms .set(AuthAlgorithm.OPEN); config.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.TKIP); config.allowedKeyManagement.set(KeyMgmt.WPA_PSK);// 直連Wi-Fi //config.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.WPA_EAP); //config.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.IEEE8021X); config.allowedPairwiseCiphers .set(WifiConfiguration.PairwiseCipher.TKIP); // config.allowedProtocols.set(WifiConfiguration.Protocol.WPA); config.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.CCMP); config.allowedPairwiseCiphers .set(WifiConfiguration.PairwiseCipher.CCMP); config.status = WifiConfiguration.Status.ENABLED; } return config; } private boolean openWifi() { boolean bRet = true; if (!wifiManager.isWifiEnabled()) { bRet = wifiManager.setWifiEnabled(true); } return bRet; } class ConnectRunnable implements Runnable { private String ssid; private String password; private WifiCipherType type; private String userName; public ConnectRunnable(String ssid,String userName, String password, WifiCipherType type) { this.ssid = ssid; this.password = password; this.type = type; this.userName = userName; } @Override public void run() { try { openWifi(); sendMsg("opened"); Thread.sleep(200); while (wifiManager.getWifiState() == WifiManager.WIFI_STATE_ENABLING) { try { Thread.sleep(100); } catch (InterruptedException ie) { } } WifiConfiguration wifiConfig = createWifiInfo(ssid, password,type); //WifiConfiguration wifiConfig = WPAConfiguration.setWifiConfigurations(ssid,userName,password); // if (wifiConfig == null) { sendMsg("wifiConfig is null!"); return; } WifiConfiguration tempConfig = isExsits(ssid); if (tempConfig != null) { wifiManager.removeNetwork(tempConfig.networkId); } int netID = wifiManager.addNetwork(wifiConfig); boolean enabled = wifiManager.enableNetwork(netID, true); sendMsg("enableNetwork status enable=" + enabled); boolean connected = wifiManager.reconnect(); sendMsg("enableNetwork connected=" + connected); sendMsg("���ӳɹ�!"); } catch (Exception e) { // TODO: handle exception sendMsg(e.getMessage()); e.printStackTrace(); } } } private static boolean isHexWepKey(String wepKey) { final int len = wepKey.length(); // WEP-40, WEP-104, and some vendors using 256-bit WEP (WEP-232?) if (len != 10 && len != 26 && len != 58) { return false; } return isHex(wepKey); } private static boolean isHex(String key) { for (int i = key.length() - 1; i >= 0; i--) { final char c = key.charAt(i); if (!(c >= '0' && c <= '9' || c >= 'A' && c <= 'F' || c >= 'a' && c <= 'f')) { return false; } } return true; } }
WifiManager wifiManager = (WifiManager) getApplicationContext().getSystemService(WIFI_SERVICE); WifiAutoConnectManager wac = new WifiAutoConnectManager(wifiManager); //連線Wi-Fi wac.connect(wifissid,userName,password, password.equals("") ? WifiAutoConnectManager.WifiCipherType.WIFICIPHER_NOPASS: WifiAutoConnectManager.WifiCipherType.WIFICIPHER_WPA);其實回過頭來看這個功能其實主要程式碼是建立正確的 WifiConfiguration 物件，然後新增到
int netID = wifiManager.addNetwork(wifiConfig); boolean enabled = wifiManager.enableNetwork(netID, true);這裡再說另外一種情況，需要用使用者名稱和密碼方式連線Wi-Fi的情況，這是就需要引用Android的另外一個WifiEnterpriseConfig： WifiConfiguration config = new WifiConfiguration();
config.allowedAuthAlgorithms.clear(); config.allowedGroupCiphers.clear();
config.allowedKeyManagement.clear();
config.allowedPairwiseCiphers.clear(); config.allowedProtocols.clear();
config.SSID = "\"" + SSID + "\"";
config.allowedKeyManagement.set(KeyMgmt.WPA_EAP);
config.allowedKeyManagement.set(KeyMgmt.IEEE8021X);
WifiEnterpriseConfig enterpriseConfig = new WifiEnterpriseConfig();
enterpriseConfig.setIdentity(username);
enterpriseConfig.setPassword(password);
enterpriseConfig.setEapMethod(WifiEnterpriseConfig.Eap.PEAP);
config.enterpriseConfig = enterpriseConfig;
還是以上面程式碼為例說明，需要將WifiConfiguration的建立物件稍做修改，修改createWifiInfo方法的這個if條件中的程式碼同時傳入對應Wi-Fi的使用者名稱和密碼：
// wpa if (Type == WifiAutoConnectManager.WifiCipherType.WIFICIPHER_WPA) { //////////////////////////////////////config.allowedAuthAlgorithms.clear(); config.allowedGroupCiphers.clear(); config.allowedKeyManagement.clear(); config.allowedPairwiseCiphers.clear(); config.allowedProtocols.clear(); config.SSID = "\"" + SSID + "\""; config.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.WPA_EAP); config.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.IEEE8021X); WifiEnterpriseConfig enterpriseConfig = new WifiEnterpriseConfig(); enterpriseConfig.setIdentity(username); enterpriseConfig.setPassword(Password);enterpriseConfig.setEapMethod(WifiEnterpriseConfig.Eap.PEAP); config.enterpriseConfig = enterpriseConfig; config.status = WifiConfiguration.Status.ENABLED; }