gistfile1.txt

override fun onCreate(savedInstanceState: Bundle?) {
    super.onCreate(savedInstanceState)
    setContentView(R.layout.activity_main)
    val btn = findViewById<Button>(R.id.button1)

    btn.setOnClickListener(object : View.OnClickListener {
        override fun onClick(v: View?) {
            requestSend()
        }
    })
}

fun requestSend() {

    val jsonobj = JSONObject()

    jsonobj.put("nim", nim_editText.text)
    jsonobj.put("nama", nama_editText.text)
    jsonobj.put("address", address_editText.text)

    val queue = Volley.newRequestQueue(this)
    val url = "http://192.168.100.7/simplecrud/create.php"

    val req = JsonObjectRequest(Request.Method.POST,url,jsonobj,
        Listener {
            Toast.makeText(this@MainActivity, "Success", Toast.LENGTH_SHORT).show()
        },
        ErrorListener {
            Toast.makeText(this@MainActivity, "Error Occured", Toast.LENGTH_SHORT).show()
        })

    queue.add(req)
}