Hridoy - Wireless Projects - Calculator

<?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:orientation="vertical"
    android:padding="10dp"
    android:gravity="center"
    tools:context=".MainActivity">

    <EditText
        android:layout_width="310dp"
        android:layout_height="80dp"
        android:hint="Enter a number."
        android:id="@+id/number1"
        android:inputType="numberDecimal"
        android:textColor="@color/colorPrimaryDark"
        android:textSize="30dp"
        android:textColorHint="@color/colorPrimary" />

    <EditText
        android:layout_width="310dp"
        android:layout_height="80dp"
        android:hint="Enter another number."
        android:id="@+id/number2"
        android:inputType="numberDecimal"
        android:textColor="@color/colorPrimaryDark"
        android:textSize="30dp"
        android:textColorHint="@color/colorPrimary">
    </EditText>

    <LinearLayout
        android:layout_width="305dp"
        android:layout_height="90dp"
        android:layout_marginTop="10dp"
        android:gravity="center"
        android:orientation="horizontal"
        android:background="#BAE9E0">

        <Button
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:id="@+id/sum"
            android:text="SUM"
            android:textSize="30dp"
            android:background="#fff"
            android:textColor="@color/colorPrimaryDark">
        </Button>

        <Button
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginLeft="10dp"
            android:id="@+id/sub"
            android:text="SUB"
            android:textSize="30dp"
            android:background="#fff"
            android:textColor="@color/colorPrimaryDark">
        </Button>

    </LinearLayout>

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/result"
        android:text=" Result "
        android:background="#BAE9E0"
        android:textSize="35dp"
        android:textColor="@color/colorPrimaryDark"
        android:layout_marginTop="20dp">
    </TextView>


    <Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/reset"
        android:text=" Reset "
        android:layout_marginTop="30dp"
        android:textSize="30dp"
        android:background="@color/colorPrimaryDark"
        android:textColor="#fff">
    </Button>


</LinearLayout>







package com.example.calculator;

import androidx.appcompat.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 num1, num2;
    Button sum, sub, reset;
    TextView result;
    float number1, number2, output;

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

        num1 = (EditText) findViewById(R.id.number1);
        num2 = (EditText) findViewById(R.id.number2);
        sum = (Button) findViewById(R.id.sum);
        sub = (Button) findViewById(R.id.sub);
        result = (TextView) findViewById(R.id.result);
        reset = (Button) findViewById(R.id.reset);


        sum.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                number1 = Float.valueOf(num1.getText().toString());
                number2 = Float.valueOf(num2.getText().toString());
                output = (number1 + number2);
                result.setText(" " + String.valueOf(output) + " ");
            }
        });

        sub.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                number1 = Float.valueOf(num1.getText().toString());
                number2 = Float.valueOf(num2.getText().toString());
                output = (number1 - number2);
                result.setText(" " + String.valueOf(output) + " ");
            }
        });

        reset.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                num1.setText("");
                num2.setText("");
                result.setText(" Result ");
            }
        });
    }


}