startActivityForResult Depreciated Solution | Android Studio | Kotlin

How to use ActivityResult OR ActivityResultLauncher?

Since the startActivityForResult() used to launce the intents like Gallery, Camera, File Pick, Share data, etc is deprecated so now there is a new way to do that ActivityResultLauncher class. 

>>Check for Java

Video Tutorial:

Code:

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<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"
    android:gravity="center"
    tools:context=".MainActivity">

    <!--ImageView: Set image after picking from gallery-->
    <ImageView
        android:id="@+id/profileIv"
        android:layout_width="150dp"
        android:layout_height="150dp"
        android:src="@drawable/ic_image_black"
        android:adjustViewBounds="true"/>

    <!--Button: launch intent to pick image from gallery-->
    <Button
        android:id="@+id/intentBtn"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Pick Image"/>

</LinearLayout>

MainActivity.kt

package com.technifysoft.activityresultkotlin

import android.app.Activity
import android.content.Intent
import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import android.widget.Button
import android.widget.ImageView
import android.widget.Toast
import androidx.activity.result.contract.ActivityResultContracts

class MainActivity : AppCompatActivity() {


    private lateinit var profileIv:ImageView

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)

        //UI Views (use ViewBinding instead of findViewById - recommended)
        profileIv = findViewById(R.id.profileIv)
        val intentBtn:Button = findViewById(R.id.intentBtn)

        //handle click, launch gallery intent to pick image
        intentBtn.setOnClickListener {
            //intent to launch gallery
            val intent = Intent(Intent.ACTION_PICK)
                //set type
            intent.type = "image/*"
            galleryActivityResultLauncher.launch(intent)
        }
    }

    private val galleryActivityResultLauncher =
        registerForActivityResult(ActivityResultContracts.StartActivityForResult()){
            result ->
            //handle intent result here
            if (result.resultCode == Activity.RESULT_OK){
                //image picked
                //get uri of image picked
                val data = result.data
                val imageUri = data!!.data

                //set image to imageview
                profileIv.setImageURI(imageUri)
            }
            else{
                //cancelled
                Toast.makeText(this@MainActivity, "Cancelled", Toast.LENGTH_SHORT).show()
            }
        }

}

Screenshots