Circular Image View in Android Studio

In this tutorial, I am going to show you how you can set the image in a round shape with a colorful border
So let's start.

1.add this code to your main_activity.xml

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout
    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"
    tools:context=".MainActivity">


    <androidx.cardview.widget.CardView
        android:id="@+id/cardView"
        android:layout_width="300dp"
        android:layout_height="300dp"
        app:cardBackgroundColor="@color/purple_700"
        app:cardCornerRadius="150dp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toTopOf="parent">


        <androidx.cardview.widget.CardView
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_margin="10dp"
            app:cardCornerRadius="150dp">

            <ImageView
                android:id="@+id/img"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:scaleType="centerCrop"
                android:src="@mipmap/ic_launcher" />

        </androidx.cardview.widget.CardView>


    </androidx.cardview.widget.CardView>


</androidx.constraintlayout.widget.ConstraintLayout>

2.add this code to your MainActivity.java

package com.example.circularimageview;

import android.content.Intent;
import android.graphics.Bitmap;
import android.media.Image;
import android.os.Bundle;
import android.provider.MediaStore;
import android.view.View;
import android.widget.ImageView;

import androidx.annotation.Nullable;
import androidx.appcompat.app.AppCompatActivity;
import androidx.cardview.widget.CardView;

public class MainActivity extends AppCompatActivity {

    CardView cardView;
    ImageView imageView;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        imageView = findViewById(R.id.img);
        cardView = findViewById(R.id.cardView);

        cardView.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
                startActivityForResult(intent, 101);
            }
        });
    }

    @Override
    protected void onActivityResult(int requestCode,
                                    int resultCode,
                                    @Nullable Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        if (requestCode == 101){
            Bitmap bitmap = (Bitmap) data.getExtras().get("data");
            imageView.setImageBitmap(bitmap);
        }
    }
}

Watch this full tutorial