How to add two numbers in Android Studio? | Source Code

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

<LinearLayout

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

    xmlns:tools="http://schemas.android.com/tools"

    xmlns:app="http://schemas.android.com/apk/res-auto"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:orientation="vertical"

    tools:context=".MainActivity">



  <TextView

      android:layout_width="wrap_content"

      android:layout_height="wrap_content"

    android:layout_gravity="center_horizontal"

      android:gravity="center_horizontal"

      android:layout_marginTop="50dp"

      android:textSize="20dp"

      android:text="Enter the First Number:"

      />

  <EditText

      android:layout_width="wrap_content"

      android:layout_height="wrap_content"

      android:layout_gravity="center_horizontal"

      android:gravity="center_horizontal"

      android:layout_marginTop="25dp"

      android:ems="10"

      android:id="@+id/txtFirstNo"

    />

  <TextView

      android:layout_width="wrap_content"

      android:layout_height="wrap_content"

      android:layout_gravity="center_horizontal"

      android:gravity="center_horizontal"

      android:layout_marginTop="50dp"

      android:textSize="20dp"

      android:text="Enter the Second Number:"

      />

  <EditText

      android:layout_width="wrap_content"

      android:layout_height="wrap_content"

      android:layout_gravity="center_horizontal"

      android:gravity="center_horizontal"

      android:layout_marginTop="25dp"

      android:ems="10"

      android:id="@+id/txtSecondNo"

      />

  <Button

      android:layout_width="wrap_content"

      android:layout_height="wrap_content"

      android:id="@+id/btnAdd"

      android:text="Add"

      android:layout_gravity="center_horizontal"

      android:gravity="center_horizontal"

      android:layout_marginTop="25dp"

      android:onClick="Calculate"

      />

  <TextView

      android:layout_width="wrap_content"

      android:layout_height="wrap_content"

    android:id="@+id/txtResult"

    android:layout_gravity="center_horizontal"

      android:gravity="center_horizontal"

      android:layout_marginTop="50dp"

      android:textSize="20dp"

      />

  </LinearLayout>

package com.infinetsoft.addition;



import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;

import android.view.View;

import android.widget.EditText;

import android.widget.TextView;



public class MainActivity extends AppCompatActivity {



    private EditText txtFirstNo;

    private EditText txtSecondNo;

    private TextView txtResult;

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

        txtFirstNo=(EditText) findViewById(R.id.txtFirstNo);

        txtSecondNo=(EditText) findViewById(R.id.txtSecondNo);

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

    }



    public void Calculate(View v){



        Float first= Float.parseFloat( txtFirstNo.getText().toString()) ;

        Float second= Float.parseFloat( txtSecondNo.getText().toString()) ;

        Float result=first+second;

        txtResult.setText(result.toString());



    }



}