上次写了Android连接匿名WiFi的内容。WiFI开发对于应用层开发是比较小众的知识点，不过既然用到了就在此记录下。

创建热点

1、根据加密类型、密码、是否隐藏等参数来创建热点

 static WifiConfiguration createWifiConfig(String SSID,@WifiSecurityType int wifiCipherType,String password,boolean hiddenSSID) {
 
    WifiConfiguration wifiConfiguration = new WifiConfiguration();
    wifiConfiguration.SSID = convertToQuotedString(SSID);
    wifiConfiguration.hiddenSSID=hiddenSSID;//是否隐藏热点true=隐藏,如果隐藏需要其他设备手动添加网络
    switch (wifiCipherType) {
      case WifiSecurityType.SECURITY_NONE:
        wifiConfiguration.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.NONE);
        break;
      case WifiSecurityType.SECURITY_WEP:
        wifiConfiguration.allowedKeyManagement.set(KeyMgmt.NONE);
        wifiConfiguration.allowedAuthAlgorithms.set(AuthAlgorithm.OPEN);
        wifiConfiguration.allowedAuthAlgorithms.set(AuthAlgorithm.SHARED);
        if (!TextUtils.isEmpty(password)) {
          int length = password.length();
          // WEP-40,WEP-104,and 256-bit WEP (WEP-232?)
          if ((length == 10 || length == 26 || length == 58)
              && password.matches("[0-9A-Fa-f]*")) {
            wifiConfiguration.wepKeys[0] = password;
          } else {
            wifiConfiguration.wepKeys[0] = '"' + password + '"';
          }
        }
        break;
 
      case WifiSecurityType.SECURITY_WPA_PSK:
        wifiConfiguration.allowedKeyManagement.set(KeyMgmt.WPA_PSK);
        if (!TextUtils.isEmpty(password)) {
          if (password.matches("[0-9A-Fa-f]{64}")) {
            wifiConfiguration.preSharedKey = password;
          } else {
            wifiConfiguration.preSharedKey = '"' + password + '"';
          }
        }
        break;
 
      case WifiSecurityType.SECURITY_WPA_EAP:
        wifiConfiguration.allowedKeyManagement.set(KeyMgmt.WPA_EAP);
        wifiConfiguration.allowedKeyManagement.set(KeyMgmt.IEEE8021X);
        wifiConfiguration.enterpriseConfig = new WifiEnterpriseConfig();
        int eapMethod = 0;
        int phase2Method = 0;
        wifiConfiguration.enterpriseConfig.setEapMethod(eapMethod);
        wifiConfiguration.enterpriseConfig.setPhase2Method(phase2Method);
        if (!TextUtils.isEmpty(password)) {
          wifiConfiguration.enterpriseConfig.setPassword(password);
        }
        break;
      default:
        break;
    }
    return wifiConfiguration;
  }

然后调用WifiManager的setWifiApEnabled方法来设置wifiConfiguration，因为是隐藏的，需要通过反射：

 try {
      Method method = mWifManager.getClass().getMethod(
          "setWifiApEnabled",WifiConfiguration.class,Boolean.TYPE);
      boolean enable = (Boolean) method.invoke(mWifManager,config,true);
 
      if (enable) {
        Log.d("WiFi","热点已开启");
      } else {
        Log.d("WiFi","创建热点失败");
      }
    } catch (Exception e) {
      e.printStackTrace();
    }

关闭热点

关闭热点比较简单，也是用上面的方法，第二个参数传false就行了：

public void closeWifiAp() {
    try {
      Method method = mWifiManager.getClass().getMethod("setWifiApEnabled",boolean.class);
      method.invoke(mWifiManager,null,false);
    } catch (Exception e) {
      e.printStackTrace();
    }
  }

监听热点状态

热点的状态可以通过广播的方式来监听：

 public static final String WIFI_AP_STATE_CHANGED_ACTION =
    "android.net.wifi.WIFI_AP_STATE_CHANGED";

不过这个变量是隐藏的，只能直接通过值来注册广播：

  IntentFilter filter = new IntentFilter();
    filter.addAction("android.net.wifi.WIFI_AP_STATE_CHANGED");

然后在广播中获取state：

int state = intent.getIntExtra("wifi_state",0);

wifi热点有如下几种状态：

#WIFI_AP_STATE_DISABLED
#WIFI_AP_STATE_DISABLING
#WIFI_AP_STATE_ENABLED
#WIFI_AP_STATE_ENABLING
#WIFI_AP_STATE_Failed

其他API：

获取WiFI热点当前状态，返回值就是上面五种状态：

public int getWifiApState()

判断WiFi热点是否打开：

public boolean isWifiApEnabled()

获取当前wifi热点的WifiConfiguration：

public WifiConfiguration getWifiApConfiguration()

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持我们。