Volley Registration Using Kotlin

Activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<layout>
    <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
        xmlns:app="http://schemas.android.com/apk/res-auto"
        xmlns:tools="http://schemas.android.com/tools"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical"
        tools:context="com.androindian.retrofit.MainActivity">

        <EditText
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:hint="Name"
            android:id="@+id/name"/>

        <EditText
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:hint="Email"
            android:id="@+id/email"/> <EditText
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:hint="Pass"
        android:id="@+id/Pass"/>

        <Button
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="Reg"
            android:id="@+id/Reg"/>


    </LinearLayout>
</layout>

MainActivity.kt

package com.androindian.volley

import android.os.Bundle
import android.widget.Toast
import androidx.appcompat.app.AppCompatActivity
import androidx.databinding.DataBindingUtil
import com.android.volley.Request
import com.android.volley.RequestQueue
import com.android.volley.toolbox.JsonObjectRequest
import com.android.volley.toolbox.Volley
import com.androindian.volley.databinding.ActivityMainBinding
import org.json.JSONException
import org.json.JSONObject

class MainActivity : AppCompatActivity() {
    var binding: ActivityMainBinding? = null
    var url = "https://androindian.com/test/Register.php"

    //2
    var requestQueue: RequestQueue? = null
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        binding = DataBindingUtil.setContentView(
            this@MainActivity, R.layout.activity_main
        )

        //3
        requestQueue = Volley.newRequestQueue(this@MainActivity)
        binding?.Reg?.setOnClickListener { //1
            val jsonObject = JSONObject()
            try {
                jsonObject.put("username", binding?.name?.text.toString().trim { it <= ' ' })
                jsonObject.put("email", binding?.email?.text.toString().trim { it <= ' ' })
                jsonObject.put("password", binding?.Pass?.text.toString().trim { it <= ' ' })
            } catch (e: JSONException) {
                e.printStackTrace()
            }

            //4
            val jsonObjectRequest = JsonObjectRequest(
                Request.Method.POST, url, jsonObject, { response -> //8
                    //Toast.makeText(MainActivity.this, response.getString("key").toString(), Toast.LENGTH_SHORT).show();
                    try {
                        val res = response.getString("status")
                        if (res.equals("failed", ignoreCase = true)) {
                            val res1 = response.getString("key")
                            Toast.makeText(this@MainActivity, res1, Toast.LENGTH_SHORT).show()
                        } else if (res.equals("success", ignoreCase = true)) {
                            val res1 = response.getString("key")
                            Toast.makeText(this@MainActivity, res1, Toast.LENGTH_SHORT).show()
                        }
                    } catch (e: JSONException) {
                        e.printStackTrace()
                    }
                } //5
            ) { error -> //7
                Toast.makeText(this@MainActivity, "" + error.toString(), Toast.LENGTH_SHORT).show()
            }

            //6
            requestQueue!!.add(jsonObjectRequest)
        }
    }
}

AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools">
    <uses-permission android:name="android.permission.INTERNET"></uses-permission>

    <application
        android:allowBackup="true"
        android:dataExtractionRules="@xml/data_extraction_rules"
        android:fullBackupContent="@xml/backup_rules"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:supportsRtl="true"
        android:theme="@style/Theme.Volley"
        tools:targetApi="31">
        <activity
            android:name=".MainActivity"
            android:exported="true">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>

build.gradle

dataBinding{
        enabled=true
    }
}

dependencies {

   
    implementation 'com.android.volley:volley:1.2.1'
}