Create A CheckBox App In An Android Application Using Android Studio

Introduction

This blog explains how to develop a checkbox app in an Android Application, using Android Studio.

Requirements

Android Studio 2.1.3

If you want create a checkbox app, it should follow the steps given below.

Step 1

Now, open Android Studio and you can choose the File, followed by New. Afterwards, choose New Project.

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Step 2

Here, you can create Your Application name and choose where your project is stored on the location and click Next button.

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Now, we can select the version of Android. It is Target Android Devices.

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Step 3

Here, we can add the activity, more activity is available, and click Next button.

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Now, we can write the activity name and click the Finish button.

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Step 4

Now, open your project and you will go to the activity_main.xml and afterwards, you will build the design. It should choose toolbox and if you want some other option (CheckBox, TextView), use the drag and drop method.

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Now, we can see the Graphical User Interface design.

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Step 5

Now, you will go to the resource folder and select the String.xml. Subsequently, you need to add the string value.

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srings.xml code

<resources>
<string name="app_name">CheckBoxApp</string>
<string name="Apple">APPLE</string>
<string name="Banana">BANANA</string>
<string name="BluBerry">BLUEBERRY</string>
<string name="Grapes">GRAPES</string>
<string name="Straw">STRAW</string>
</resources>

Step 6

Here, you need to build on design and write the .XML code.

activity_main.xml code.

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:paddingBottom="@dimen/activity_vertical_margin" android:paddingLeft="@dimen/activity_horizontal_margin" android:paddingRight="@dimen/activity_horizontal_margin" android:paddingTop="@dimen/activity_vertical_margin" tools:context="xyz.rvconstructions.www.checkboxapp.MainActivity">
<TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Select Your favorite fruits: " android:textColor="#f00" android:textSize="20sp" android:textStyle="bold" />
<LinearLayout android:id="@+id/linearLayout" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_marginTop="30dp" android:background="#e0e0e0" android:orientation="vertical">
<CheckBox android:id="@+id/applechkb" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_centerHorizontal="true" android:checked="false" android:padding="20dp" android:text="@string/Apple" android:textColor="#44f" android:textSize="20sp" android:textStyle="bold|italic" />
<CheckBox android:id="@+id/bananachkb" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_centerHorizontal="true" android:checked="false" android:padding="20dp" android:text="@string/Banana" android:textColor="#f44" android:textSize="20sp" android:textStyle="bold|italic" />
<CheckBox android:id="@+id/strawchkb" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_centerHorizontal="true" android:checked="false" android:padding="20dp" android:text="@string/BluBerry" android:textColor="#444" android:textSize="20sp" android:textStyle="bold|italic" />
<CheckBox android:id="@+id/blueberrychkb" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_centerHorizontal="true" android:checked="false" android:padding="20dp" android:text="@string/Grapes" android:textColor="#888" android:textSize="20sp" android:textStyle="bold|italic" />
<CheckBox android:id="@+id/grapschkb" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_centerHorizontal="true" android:checked="false" android:padding="20dp" android:text="@string/Straw" android:textColor="#101010" android:textSize="20sp" android:textStyle="bold|italic" />
</LinearLayout>
</RelativeLayout>

Step 7

Now, you will go to MainActivity.java page and build Java code.

First of all, you will declare a file, which is an extension file.

Android

Now, we can see MainActivity.java code.

package xyz.rvconstructions.www.checkboxapp;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.graphics.Color;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.Toast;
public class MainActivity extends AppCompatActivity implements View.OnClickListener {
CheckBox Abble, Banana, Straw, Blueberry, Grapes;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Abble = (CheckBox) findViewById(R.id.applechkb);
Abble.setOnClickListener(this);
Banana = (CheckBox) findViewById(R.id.bananachkb);
Banana.setOnClickListener(this);
Straw = (CheckBox) findViewById(R.id.strawchkb);
Straw.setOnClickListener(this);
Blueberry = (CheckBox) findViewById(R.id.blueberrychkb);
Blueberry.setOnClickListener(this);
Grapes = (CheckBox) findViewById(R.id.grapschkb);
Grapes.setOnClickListener(this);
}
@Override
public void onClick(View view) {
switch (view.getId()) {
case R.id.applechkb:
if (Abble.isChecked())
Toast.makeText(getApplicationContext(), "Your clicked abble", Toast.LENGTH_LONG).show();
break;
case R.id.bananachkb:
if (Banana.isChecked())
Toast.makeText(getApplicationContext(), "Your clicked banana", Toast.LENGTH_LONG).show();
break;
case R.id.strawchkb:
if (Straw.isChecked())
Toast.makeText(getApplicationContext(), "Your clicked straw", Toast.LENGTH_LONG).show();
break;
case R.id.blueberrychkb:
if (Blueberry.isChecked())
Toast.makeText(getApplicationContext(), "Your clicked blueberry", Toast.LENGTH_LONG).show();
break;
case R.id.grapschkb:
if (Grapes.isChecked())
Toast.makeText(getApplicationContext(), "Your clicked grapes", Toast.LENGTH_LONG).show();
break;
}
}
}

Step 8

Here, you will go to run it and select Run-> Run app option.

Android

Here, you will choose Emulator or the devices and it is Nokia Nokia _X.

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Step 9

Here, you can see the output.

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Now, you will check Apple and afterwards, you will see the given output.

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Now, you will check Banana and afterwards, you will see the given output.

Android