Addition of two numbers in Android Application.
MainActivity.java
package com.example.sunny.addition;
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.TextView;
public class MainActivity extends AppCompatActivity {
EditText number1;
EditText 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.fst);
number2=(EditText) findViewById(R.id.sec);
Add_button=(Button) findViewById(R.id.add_button);
result = (TextView) findViewById(R.id.textView_answer);
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;
// double sub = num1 - num2;
result.setText(Double.toString(sum));
}
});
}
}
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">
<TextView
android:id="@+id/textView_answer"
android:layout_width="100dp"
android:layout_height="25dp"
android:layout_marginLeft="130dp"
android:layout_marginTop="300dp"
android:text="0"
android:textSize="20dp"
android:textStyle="bold" />
<!--take the input first number-->
<EditText
android:id="@+id/fst"
android:layout_width="150dp"
android:layout_height="40dp"
android:layout_marginLeft="200dp"
android:layout_marginTop="40dp"
android:hint="Enter Number"
android:inputType="number" />
<TextView
android:id="@+id/textView_first_no"
android:layout_width="150dp"
android:layout_height="25dp"
android:layout_marginLeft="10dp"
android:layout_marginTop="50dp"
android:text="First number"
android:textSize="20dp" />
<TextView
android:id="@+id/textView_second_no"
android:layout_width="150dp"
android:layout_height="25dp"
android:layout_marginLeft="10dp"
android:layout_marginTop="100dp"
android:text="Second number"
android:textSize="20dp" />
<EditText
android:id="@+id/sec"
android:layout_width="150dp"
android:layout_height="40dp"
android:layout_marginLeft="200dp"
android:layout_marginTop="90dp"
android:inputType="number"
android:hint="Enter Number"
tools:ignore="MissingConstraints" />
<Button
android:id="@+id/add_button"
android:layout_width="100dp"
android:layout_height="50dp"
android:layout_marginLeft="110dp"
android:layout_marginTop="200dp"
android:text="Addition">
</Button>
</RelativeLayout>
OUTPUT
 |
| Android App Sum of Two Number |
