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How to programmatically take a screenshot in android?
This example demonstrate about how to programmatically take a screenshot in android.
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" android:id="@+id/parent" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" tools:context=".MainActivity" android:background="#33FFFF00" android:orientation="vertical"> <ImageView android:id="@+id/screenShot" android:layout_width="300dp" android:layout_height="300dp" /> <TextView android:id="@+id/text" android:textSize="18sp" android:layout_gravity="center" android:text="Click" android:layout_width="wrap_content" android:layout_height="wrap_content" /> </LinearLayout>
In the above code we have taken two views as imageview and textview. when user click on textview, it going to take screen shot and append to imageview.
Step 3 − Add the following code to src/MainActivity.java
package com.example.andy.myapplication;
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.TextView;
public class MainActivity extends AppCompatActivity {
int view=R.layout.activity_main;
ImageView screenShort;
TextView textView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(view);
final LinearLayout parent=findViewById(R.id.parent);
screenShot=findViewById(R.id.screenShot);
textView=findViewById(R.id.text);
textView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
textView.setText("It is screen shot text");
screenShot(parent);
}
});
}
public void screenShot(View view) {
Bitmap bitmap = Bitmap.createBitmap(view.getWidth(),
view.getHeight(), Bitmap.Config.ARGB_8888);
Canvas canvas = new Canvas(bitmap);
view.draw(canvas);
screenShot.setImageBitmap(bitmap);
textView.setText("click");
}
}In the above code we have written screenshot(view), in this method we have passed parent view to take screen shot from top end bottom. To take screen use the following code -
Bitmap bitmap = Bitmap.createBitmap(view.getWidth(), view.getHeight(), Bitmap.Config.ARGB_8888); Canvas canvas = new Canvas(bitmap); view.draw(canvas); screenShort.setImageBitmap(bitmap);
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 −
Now click on text view, it will take screen shot and append to image view as shown below -
Click here to download the project code
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