How To Create A Camera Application In Android Using Android Studio

Introduction

Android is one of the most popular operating systems for mobiles. In this article, I will show you how to start the camera application in Android using Android Studio.

Requirements

• Android Studio version 2.3.3
• Little bit XML and JAVA knowledge.
• Android Emulator (or) Android mobile
• Download link (Android Studio)

Steps to be followed

Follow these steps to create an application that starts the camera in Android. I have included the source code below.

Step 1

Open Android Studio and start a new Android Studio Project.

Step 2

You can choose your application name and choose where your project is stored on the location. If you wish to use C++ for coding the project, mark the "Include C++ support", and click "Next" button.



Now, select the version of Android and select the target Android devices.

Step 3

Now, add the activity and click "Next" button.



Add activity name and click "Finish".

Step 4

Go to activity_main.xml, This XML file contains the designing code for your Android app.



The XML code is given below.

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.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="abu.camera.MainActivity">

    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical">
    <Button
            android:id="@+id/button1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_alignParentLeft="true"
            android:layout_alignParentTop="true"
            android:layout_marginLeft="81dp"
            android:layout_marginTop="54dp"
            android:text="Button" />
    </RelativeLayout>
</android.support.constraint.ConstraintLayout>

Step 5

Go to  Main Activity.java. This Java program is the backend language for Android app.



The Java code is given below.

package abu.camera;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.provider.MediaStore;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;

public class MainActivity extends Activity {
    Button btn;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        btn=(Button)findViewById(R.id.button1);
        btn.setOnClickListener(new OnClickListener() {

            public void onClick(View v) {
                // TODO Auto-generated method stub
                Intent i=new Intent(MediaStore.ACTION_VIDEO_CAPTURE);
                startActivity(i);
            }
        });
    }
    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }
}

Step 6

Now, go to menu bar and click "Make Project" or press ctrl+f9 to debug the errors.

Step 7

Then, click "Run" button or press shift+f10 to run the project. Choose the "virtual machine" option and click OK.

Conclusion

We have successfully created an app that starts the camera in Android.