Android program to add two numbers.

 

Activity_main.xml

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout 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"

    android:background="@color/color1"

    android:orientation="vertical"

    tools:context=".MainActivity">



    <TextView

        android:layout_width="fill_parent"

        android:layout_height="100dp"

        android:layout_marginTop="30dp"

        android:gravity="center_horizontal"

        android:text="ADD TWO NUMBERS"

        android:textColor="@color/color2"

        android:textAppearance="@style/TextAppearance.AppCompat.Display1"></TextView>

    <TableLayout

        android:id="@+id/tableLayout1"

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:layout_margin="10dp"

        android:stretchColumns="1">

        <TableRow

            android:id="@+id/tableRow1"

            android:layout_width="match_parent"

            android:layout_height="wrap_content">



            <TextView

                android:id="@+id/fno_tv"

                android:layout_width="match_parent"

                android:layout_height="40dp"

                android:text="ENTER FIRST NUMBER   "

                android:textColor="@color/color2"

                android:textAppearance="@style/TextAppearance.AppCompat.Medium" />



            <EditText

                android:id="@+id/fno_et"

                android:layout_width="match_parent"

                android:layout_height="40dp"

                android:ems="10"

                android:inputType="number"

                android:textAppearance="@style/TextAppearance.AppCompat.Medium"

                android:textColor="@color/color3" />

            </TableRow>

        <TableRow

            android:id="@+id/tableRow2"

            android:layout_width="match_parent"

            android:layout_height="wrap_content">



            <TextView

                android:id="@+id/sno_tv"

                android:layout_width="match_parent"

                android:layout_height="75dp"

                android:text="ENTER SECOND NUMBER   "

                android:textColor="@color/color2"

                android:textAppearance="@style/TextAppearance.AppCompat.Medium" />



            <EditText

                android:id="@+id/sno_et"

                android:layout_width="match_parent"

                android:layout_height="40dp"

                android:ems="10"

                android:inputType="number"

                android:textAppearance="@style/TextAppearance.AppCompat.Medium"

                android:textColor="@color/color3" />

        </TableRow>



        <Button

            android:id="@+id/buttonsum"

            android:layout_width="match_parent"

            android:layout_height="wrap_content"

            android:background="@color/colorAccent"

            android:gravity="center"

            android:text="CALCULATE SUM"

            android:textAppearance="@style/TextAppearance.AppCompat.Large" />



        <TableRow

            android:id="@+id/tableRow00"

            android:layout_width="match_parent"

            android:layout_height="wrap_content">



        <TextView

            android:id="@+id/a000"

            android:layout_width="match_parent"

            android:layout_height="75dp"

            />

        </TableRow>

        <TableRow

            android:id="@+id/tableRow3"

            android:layout_width="match_parent"

            android:layout_height="40dp">



        <TextView

            android:id="@+id/result_tv"

            android:layout_width="match_parent"

            android:layout_height="50dp"

            android:text="RESULT"

            android:textColor="@color/color2"

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



            <TextView

                android:id="@+id/result_value"

                android:layout_width="match_parent"

                android:layout_height="50dp"

                android:textAppearance="@style/TextAppearance.AppCompat.Large"

                android:textColor="@color/color3" />

        </TableRow>

    </TableLayout>

</LinearLayout>

 

 

MainActivity.java

package com.example.addtwonumbers;



import android.app.Activity;

import android.os.Bundle;

import android.view.View;

import android.widget.Button;

import android.widget.EditText;

import android.widget.TextView;



public class MainActivity extends Activity {

    EditText number1,number2;

    Button Add_button;

    TextView result;

    int ans=0;

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);



        number1=(EditText) findViewById(R.id.fno_et);

        number2=(EditText) findViewById(R.id.sno_et);

        Add_button=(Button) findViewById(R.id.buttonsum);

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



        Add_button.setOnClickListener(new View.OnClickListener() {



            public void onClick(View v) {



                double num1 = Double.parseDouble(number1.getText().toString());

                double num2 = Double.parseDouble(number2.getText().toString());



                double sum = num1 + num2;



                result.setText(Double.toString(sum));

            }

        });

    }

}

 

colors.xml

<?xml version="1.0" encoding="utf-8"?>

<resources>

    <color name="colorPrimary">#6200EE</color>

    <color name="colorPrimaryDark">#3700B3</color>

    <color name="colorAccent">#03DAC5</color>

    <color name="color1">#FFE4E1</color>

    <color name="color2">#191970</color>

    <color name="color3">#FF0000</color>

</resources>

 

Strings.xml

<resources>

    <string name="app_name">AddTwoNumbers</string>

</resources>

Output

output- addition of two numbers