Simple Calculator Android Project Eclipse Download Source Code

Simple Calculator Android Project Eclipse Download  Source Code

                                      here is an android application for calculation wich can do addition, Subtraction,Multiplication and Division 

the eclipse project can be downloaded from the below link : 

Calculator Project eclipse : Download  -- >> click here

link : https://drive.google.com/file/d/0B2HmQFsBTVGfQzdoeldfam55b2s/edit?usp=sharing

MainActivity.java

import android.support.v7.app.ActionBarActivity;

import android.os.Bundle;

import android.view.View;

import android.widget.Button;

import android.widget.EditText;

import android.widget.TextView;

public class MainActivity extends ActionBarActivity 

{

Button add_button,sub_button,mul_button,div_button,clear_button;

EditText first_num,second_num;

TextView result;

@Override

protected void onCreate(Bundle savedInstanceState) 

{

super.onCreate(savedInstanceState);

setContentView(R.layout.fragment_main);

first_num=(EditText) findViewById(R.id.num1);

second_num=(EditText) findViewById(R.id.num2);

result=(TextView) findViewById(R.id.result);

add_button=(Button) findViewById(R.id.add);

sub_button=(Button) findViewById(R.id.sub);

mul_button=(Button) findViewById(R.id.mul);

div_button=(Button) findViewById(R.id.div);

clear_button=(Button) findViewById(R.id.clear);

add_button.setOnClickListener(new Addition());

sub_button.setOnClickListener(new Subtraction());

mul_button.setOnClickListener(new Multiply());

div_button.setOnClickListener(new Division());

clear_button.setOnClickListener(new Clear());

}

class Addition implements Button.OnClickListener

{

@Override

public void onClick(View arg0) 

{

// TODO Auto-generated method stub

String a,b;

Integer finalValue;

a=first_num.getText().toString();

b=second_num.getText().toString();

finalValue=Integer.parseInt(a)+Integer.parseInt(b);

result.setText(finalValue.toString());

}

}

class Subtraction implements Button.OnClickListener

{

@Override

public void onClick(View arg0) 

{

// TODO Auto-generated method stub

String a,b;

Integer finalValue;

a=first_num.getText().toString();

b=second_num.getText().toString();

finalValue=Integer.parseInt(a)-Integer.parseInt(b);

result.setText(finalValue.toString());

}

}

class Multiply implements Button.OnClickListener

{

@Override

public void onClick(View arg0) 

{

// TODO Auto-generated method stub

String a,b;

Integer finalValue;

a=first_num.getText().toString();

b=second_num.getText().toString();

finalValue=Integer.parseInt(a)*Integer.parseInt(b);

result.setText(finalValue.toString());

}

}

class Division implements Button.OnClickListener

{

@Override

public void onClick(View arg0) 

{

// TODO Auto-generated method stub

String a,b;

Integer finalValue;

a=first_num.getText().toString();

b=second_num.getText().toString();

finalValue=Integer.parseInt(a)/Integer.parseInt(b);

result.setText(finalValue.toString());

}

}

class Clear implements Button.OnClickListener

{

@Override

public void onClick(View arg0) 

{

// TODO Auto-generated method stub

first_num.setText("");

second_num.setText("");

result.setText("");

}

}

}

fragment_mail.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

    android:layout_width="fill_parent"

    android:layout_height="fill_parent"

    android:orientation="vertical" >

    <TextView

        android:id="@+id/textView1"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:text="Enter Number 1"

        android:textAppearance="?android:attr/textAppearanceLarge" />

    <EditText

        android:id="@+id/num1"

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:ems="10" >

        <requestFocus />

    </EditText>

    <TextView

        android:id="@+id/textView2"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:text="Enter Number 2"

        android:textAppearance="?android:attr/textAppearanceLarge" />

    <EditText

        android:id="@+id/num2"

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:ems="10" />

    <TextView

        android:id="@+id/textView3"

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:text="Result"

        android:textAppearance="?android:attr/textAppearanceLarge" />

    <TextView

        android:id="@+id/result"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:text=""

        android:textAppearance="?android:attr/textAppearanceLarge" />

    <Button

        android:id="@+id/add"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:text="Add" />

    <Button

        android:id="@+id/sub"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:text="Sub" />

    <Button

        android:id="@+id/mul"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:text="Mul" />

    <Button

        android:id="@+id/div"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:text="Div" />

    <Button

        android:id="@+id/clear"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:text="Clear" />

</LinearLayout>