Create Simple Addition Layout in Android

 In this article you can learn, How to Create Simple Addition Layout in Android with example.
 activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout 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=".MainActivity">
    <EditText
        android:id="@+id/editText1"
         android:layout_width="wrap_content" 
          android:layout_height="wrap_content"  
           android:layout_alignParentTop="true"  
             android:layout_centerHorizontal="true"
              android:layout_marginTop="61dp"     
               android:ems="10"   
                  android:inputType="number"  
                    tools:layout_editor_absoluteX="84dp"
                      tools:layout_editor_absoluteY="53dp" />
                  <EditText    
                 android:id="@+id/editText2"
                android:layout_width="wrap_content" 
              android:layout_height="wrap_content"   
           android:layout_below="@+id/editText1"   
         android:layout_centerHorizontal="true"  
      android:layout_marginTop="32dp"       
    android:ems="10"     
   android:inputType="number"   
  tools:layout_editor_absoluteX="84dp"   
  tools:layout_editor_absoluteY="127dp" />
<Button      
   android:id="@+id/button"  
     android:layout_width="wrap_content" 
      android:layout_height="wrap_content"  
        android:layout_below="@+id/editText2" 
          android:layout_centerHorizontal="true" 
           android:layout_marginTop="109dp"      
            android:text="ADD"  
           tools:layout_editor_absoluteX="148dp"   
            tools:layout_editor_absoluteY="266dp" />
        </RelativeLayout> 
MainAtivity.java
package com.example.add;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity {
    private EditText edittext1, edittext2;
    private Button buttonSum;

    @Override    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        addListenerOnButton();
    }

    public void addListenerOnButton() {
        edittext1 = (EditText) findViewById(R.id.editText1);
        edittext2 = (EditText) findViewById(R.id.editText2);
        buttonSum = (Button) findViewById(R.id.button);

        buttonSum.setOnClickListener(new View.OnClickListener() {
            @Override            public void onClick(View view) {
                String value1=edittext1.getText().toString();
                String value2=edittext2.getText().toString();
                int a=Integer.parseInt(value1);
                int b=Integer.parseInt(value2);
                int sum=a+b;
                Toast.makeText(getApplicationContext(),String.valueOf(sum), Toast.LENGTH_LONG).show();
            }
        });
    }
}

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About EasyToCode

I'm Ethan Mariano a software engineer by profession and reader/writter by passion.I have good understanding and knowledge of AngularJS, Database, javascript, web development, digital marketing and exploring other technologies related to Software development.