How to send a short string using UDP?

Support
1

I wonder if you could help me out. I am trying to adapt your code so that it were a function to which I could pass my string, which is merely of the type “1, -6” or two ints with a comma in between. myTargetIP and myTargetPort are two global variables I have and can be edited in a second activity in my app.

This is how my function now looks:

fun sendUDP(messageStr: String) {
        // Hack Prevent crash (sending should be done using an async task)
        val policy = StrictMode.ThreadPolicy.Builder().permitAll().build()
        StrictMode.setThreadPolicy(policy)
        try {
            //Open a port to send the package
            val socket = DatagramSocket()
            socket.broadcast = true
            val sendData = messageStr.toByteArray()
            val sendPacket = DatagramPacket(sendData, sendData.size, InetAddress.getByName(myTargetIP), myTargetPort)
            socket.send(sendPacket)
        } catch (e: IOException) {
            //            Log.e(FragmentActivity.TAG, "IOException: " + e.message)
        }
    }

But the issue is that the DatagramPacket gets underlined and then I get this:

None of the following functions can be called with the arguments supplied:

public constructor DatagramPacket(p0: ByteArray!, p1: Int, p2: InetAddress!, p3: Int) defined in java.net.DatagramPacket

public constructor DatagramPacket(p0: ByteArray!, p1: Int, p2: Int, p3: SocketAddress!) defined in java.net.DatagramPacket

I just can’t figger out what I am doing wrong, so please, if possible, point me to the solution.

Another issue is that if I try to use the SoftOptions class, my app crashes as I try to go to the Settings activity. If I remove the class, no problem. I wonder what that may result from?

Many thanks in advance!