Android WiFi热点开发的示例代码

2020-10-16 11:06:41 浏览数 (1)

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

代码语言:javascript复制
 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:

代码语言:javascript复制
 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:

代码语言:javascript复制
public void closeWifiAp() {
    try {
      Method method = mWifiManager.getClass().getMethod("setWifiApEnabled",   WifiConfiguration.class, 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:

代码语言:javascript复制
 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:

代码语言:javascript复制
  IntentFilter filter = new IntentFilter();
    filter.addAction("android.net.wifi.WIFI_AP_STATE_CHANGED");

然后在广播中获取state:

代码语言:javascript复制
int state = intent.getIntExtra("wifi_state", 0);

wifi热点有如下几种状态:

代码语言:javascript复制
#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:

代码语言:javascript复制
public int getWifiApState()

判断WiFi热点是否打开:

代码语言:javascript复制
public boolean isWifiApEnabled()

获取当前wifi热点的WifiConfiguration:

代码语言:javascript复制
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。

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