How to take screenshot in Android Programatically?

AndroidApps/ApplicationsMobile Development

This example demonstrates how do I take a screenshot in Android programmatically.

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"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
   style="?attr/actionButtonStyle"
   android:layout_width="match_parent"
   android:layout_height="match_parent"
   android:id="@+id/main">
   <Button
      android:id="@+id/button"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:layout_centerHorizontal="true"
      android:layout_marginTop="30dp"
      android:text="Take screenshot"/>
   <ImageView
      android:id="@+id/imageView"
      android:layout_below="@id/button"
      android:layout_width="match_parent"
      android:layout_height="match_parent"
      android:layout_centerHorizontal="true"
      android:layout_marginTop="30dp"
      android:scaleType="fitCenter"/>
</RelativeLayout>

Step 3 − Create a new Java Class and add the following code in screenshot.java

import android.graphics.Bitmap;
import android.view.View;
public class Screenshot{
   public static Bitmap takescreenshot(View v) {
      v.setDrawingCacheEnabled(true);
      v.buildDrawingCache(true);
      Bitmap b = Bitmap.createBitmap(v.getDrawingCache());
      v.setDrawingCacheEnabled(false);
      return b;
   }
   public static Bitmap takescreenshotOfRootView(View v) {
      return takescreenshot(v.getRootView());
   }
}

Step 4 − Add the following code to src/MainActivity.java

import android.graphics.Bitmap;
import android.graphics.Color;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.ImageView;
public class MainActivity extends AppCompatActivity {
   private View main;
   private ImageView imageView;
   @Override
   protected void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      setContentView(R.layout.activity_main);
      main = findViewById(R.id.main);
      imageView = (ImageView) findViewById(R.id.imageView);
      Button btn = (Button) findViewById(R.id.button);
      btn.setOnClickListener(new View.OnClickListener() {
         @Override
         public void onClick(View view) {
            Bitmap b = Screenshot.takescreenshotOfRootView(imageView);
            imageView.setImageBitmap(b);
            main.setBackgroundColor(Color.parseColor("#999999"));
         }
      });
   }
}

Step 5 − Add the following code to androidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android" package="app.com.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.

raja
Published on 31-Jul-2019 10:30:39
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