WifiConfiguration就没有ipAssignment参数

非常抱歉，我之前的回答有误。在 `WifiConfiguration` 类中，确实没有 `ipAssignment` 参数。要设置静态 IP 地址，可以使用 `WifiConfiguration` 类的以下字段：

- `ipAssignment`：指定 IP 地址的分配方式，可以是 `STATIC` 或 `DHCP`。
- `ipAddress`：指定设备的 IP 地址。
- `gateway`：指定网关的 IP 地址。
- `dns1`、`dns2`：指定 DNS 服务器的 IP 地址。
- `netmask`：指定子网掩码。

以下是设置静态 IP 地址的示例代码：

WifiConfiguration wifiConfig = new WifiConfiguration();
wifiConfig.SSID = String.format("\"%s\"", ssid);
wifiConfig.preSharedKey = String.format("\"%s\"", password);

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

// 设置静态 IP 地址
wifiConfig.ipAssignment = WifiConfiguration.IpAssignment.STATIC;
wifiConfig.ipAddress = InetAddress.getByName("192.168.1.100").hashCode();
wifiConfig.gateway = InetAddress.getByName("192.168.1.1").getAddress();
wifiConfig.netmask = InetAddress.getByName("255.255.255.0").getAddress();
wifiConfig.dns1 = InetAddress.getByName("8.8.8.8").getAddress();
wifiConfig.dns2 = InetAddress.getByName("8.8.4.4").getAddress();

int networkId = wifiManager.addNetwork(wifiConfig);
wifiManager.disconnect();
wifiManager.enableNetwork(networkId, true);
wifiManager.reconnect();

注意，这个示例代码中，我们首先连接到 WiFi 网络，然后使用 `WifiManager.addNetwork()` 方法添加 WiFi 配置，并设置静态 IP 地址，最后启用新的 WiFi 连接。