在Android中，可以使用以下代码示例来设置静态IP地址：
import android.content.Context
import android.net.ConnectivityManager
import android.net.LinkAddress
import android.net.Network
import android.net.NetworkCapabilities
import android.net.NetworkRequest
import android.os.Build
import androidx.annotation.RequiresApi

@RequiresApi(Build.VERSION_CODES.LOLLIPOP)
fun setStaticIp(context: Context, ipAddress: String, subnetMask: Int, gateway: String, dns1: String, dns2: String) {
    val connectivityManager = context.getSystemService(Context.CONNECTIVITY_SERVICE) as ConnectivityManager

    val networkRequest = NetworkRequest.Builder()
        .addTransportType(NetworkCapabilities.TRANSPORT_WIFI)
        .build()

    val networkCallback = object : ConnectivityManager.NetworkCallback() {
        override fun onAvailable(network: Network) {
            super.onAvailable(network)

            val linkProperties = connectivityManager.getLinkProperties(network)
            if (linkProperties != null) {
                // 设置静态IP地址
                val staticIpConfig = linkProperties.createStaticIpConfiguration()

                val ipAddr = LinkAddress(ipAddress, subnetMask)
                staticIpConfig.ipAddress = ipAddr

                staticIpConfig.gateway = InetAddress.getByName(gateway)

                val dns1Addr = InetAddress.getByName(dns1)
                staticIpConfig.dnsServers.add(dns1Addr)

                val dns2Addr = InetAddress.getByName(dns2)
                staticIpConfig.dnsServers.add(dns2Addr)

                linkProperties.staticIpConfiguration = staticIpConfig

                // 更新网络连接属性
                connectivityManager.updateLinkProperties(network, linkProperties)
            }
        }
    }

    connectivityManager.requestNetwork(networkRequest, networkCallback)
}

使用示例：
val ipAddress = "192.168.1.100"
val subnetMask = 24
val gateway = "192.168.1.1"
val dns1 = "8.8.8.8"
val dns2 = "8.8.4.4"

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
    setStaticIp(context, ipAddress, subnetMask, gateway, dns1, dns2)
} else {
    // 版本低于Android 5.0，不支持设置静态IP地址
}

请注意，设置静态IP地址的功能要求Android设备的API级别必须为21（Android 5.0）或更高版本。
此外，需要在AndroidManifest.xml文件中添加以下权限：
<uses-permission android:name="android.permission.CHANGE_NETWORK_STATE" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />

请确保在使用此代码时，替换示例中的IP地址、子网掩码、网关和DNS服务器地址为实际的值。