How to make an ImageView with rounded corners on Android App?

This example demonstrates how to make an ImageView with rounded corners on Android App.

Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project.

Step 2 − Add the following code to res/layout/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"
   tools:context=".MainActivity">
   <TextView
      android:id="@+id/textView"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:text="" />
   <ImageView
      android:id="@+id/imageView"
      android:layout_width="fill_parent"
      android:layout_margin="10dp"
      android:layout_height="fill_parent" />
   </LinearLayout>

Step 3 − Add the following code to src/MainActivity.java

package com.example.sample;
import android.graphics.Bitmap;
import android.graphics.BitmapShader;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.RectF;
import android.graphics.Shader;
import android.graphics.drawable.BitmapDrawable;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.widget.ImageView;
import android.widget.TextView;
public class MainActivity extends AppCompatActivity {
   @Override
   protected void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      setContentView(R.layout.activity_main);
      TextView textView=(TextView) findViewById(R.id.textView);
      textView.setTextColor(Color.RED);
      textView.setTextSize(20);
      ImageView mimageView=(ImageView) findViewById(R.id.imageView);
      Bitmap mbitmap=((BitmapDrawable) getResources().getDrawable(R.drawable.cat)).getBitmap();
      Bitmap imageRounded=Bitmap.createBitmap(mbitmap.getWidth(), mbitmap.getHeight(), mbitmap.getConfig());
      Canvas canvas=new Canvas(imageRounded);
      Paint mpaint=new Paint();
      mpaint.setAntiAlias(true);
      mpaint.setShader(new BitmapShader(mbitmap, Shader.TileMode.CLAMP, Shader.TileMode.CLAMP));
      canvas.drawRoundRect((new RectF(0, 0, mbitmap.getWidth(), mbitmap.getHeight())), 100, 100, mpaint); // Round Image Corner 100 100 100 100
      mimageView.setImageBitmap(imageRounded);
   }
}

Step 4 − Add the following code to app/manifests/AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.example.sample">
   <application
      android:allowBackup="true"
      android:icon="@mipmap/ic_launcher"
      android:label="@string/app_name"
      android:roundIcon="@mipmap/ic_launcher_round"
      android:supportsRtl="true"
      android:theme="@style/AppTheme">
      <activity android:name=".MainActivity">
         <intent-filter>
            <action android:name="android.intent.action.MAIN" />
            <category android:name="android.intent.category.LAUNCHER" />
         </intent-filter>
      </activity>
   </application>
</manifest>

Let's try to run your application. I assume you have connected your actual Android Mobile device with your computer. To run the app from android studio, open one of your project's activity files and click Run   icon from the toolbar. Select your mobile device as an option and then check your mobile device which will display your default screen −

Click here to download the project code