Android 获取当前wifi的加密方式

由于有需求是搜索附近的网络，通过账号和密码连接wifi，但是连接的时候需要知道连接的wifi加密方式

这篇博客 也是我写的，由于忘记账号和密码了，所以换了账号，重新整理了一下
原文地址：
android获取当前隐藏和未隐藏wifi的加密方式（安全性）

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1.一般WIFI加密有几种方式

• WPA-PSK/WPA2-PSK(目前最安全家用加密)
• WPA/WPA2(较不安全)
• WEP(安全较差)

• AP(迄今最安全的)

  

2.获取WiFi加密方式一（不推荐）

 public void getCipherType(Context context, String ssid) {WifiManager wifiManager = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);List<ScanResult> list = wifiManager.getScanResults();for (ScanResult scResult : list) {if (!TextUtils.isEmpty(scResult.SSID) && scResult.SSID.equals(ssid)) {String capabilities = scResult.capabilities;Log.i("river","capabilities=" + capabilities);if (!TextUtils.isEmpty(capabilities)) {if (capabilities.contains("WPA") || capabilities.contains("wpa")) {Log.i("river", "wpa");} else if (capabilities.contains("WEP") || capabilities.contains("wep")) {Log.i("river", "wep");} else {Log.i("river", "no");}}}}}

注意：此方法获取不到隐藏的网络加密方式

3.获取WiFi加密方式二（推荐）

于是查看系统设置源码中查看，系统是如何获取到隐藏网络的加密方式

    /** * These values are matched in string arrays -- changes must be kept in sync */  static final int SECURITY_NONE = 0;  static final int SECURITY_WEP = 1;  static final int SECURITY_PSK = 2;  static final int SECURITY_EAP = 3;  static int getSecurity(WifiConfiguration config) {  if (config.allowedKeyManagement.get(KeyMgmt.WPA_PSK)) {  return SECURITY_PSK;  }  if (config.allowedKeyManagement.get(KeyMgmt.WPA_EAP) || config.allowedKeyManagement.get(KeyMgmt.IEEE8021X)) {  return SECURITY_EAP;  }  return (config.wepKeys[0] != null) ? SECURITY_WEP : SECURITY_NONE;  }  

测试代码

public class MainActivity extends Activity {@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);WifiManager mWifiManager = (WifiManager) getSystemService(Context.WIFI_SERVICE);WifiInfo info = mWifiManager.getConnectionInfo();// 得到配置好的网络连接List<WifiConfiguration> wifiConfigList = mWifiManager.getConfiguredNetworks();for (WifiConfiguration wifiConfiguration : wifiConfigList) {//配置过的SSIDString configSSid = wifiConfiguration.SSID;configSSid = configSSid.replace("\"", "");//当前连接SSIDString currentSSid =info.getSSID();currentSSid = currentSSid.replace("\"", "");//比较networkId，防止配置网络保存相同的SSIDif (currentSSid.equals(configSSid)&&info.getNetworkId()==wifiConfiguration.networkId) {Log.e("river", "当前网络安全性：" + getSecurity(wifiConfiguration));}}}/*** These values are matched in string arrays -- changes must be kept in sync*/static final int SECURITY_NONE = 0;static final int SECURITY_WEP = 1;static final int SECURITY_PSK = 2;static final int SECURITY_EAP = 3;static int getSecurity(WifiConfiguration config) {if (config.allowedKeyManagement.get(KeyMgmt.WPA_PSK)) {return SECURITY_PSK;}if (config.allowedKeyManagement.get(KeyMgmt.WPA_EAP) || config.allowedKeyManagement.get(KeyMgmt.IEEE8021X)) {return SECURITY_EAP;}return (config.wepKeys[0] != null) ? SECURITY_WEP : SECURITY_NONE;}