JUST JAVA by Leonard

Just Java JAVA

/**
 * IMPORTANT: Make sure you are using the correct package name. 
 * This example uses the package name:
 * package com.example.android.justjava
 * If you get an error when copying this code into Android studio, update it to match teh package name found
 * in the project's AndroidManifest.xml file.
 **/

package com.example.android.justjava;


import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.CheckBox;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;

import java.text.NumberFormat;

import java.text.NumberFormat;

/**
 * This app displays an order form to order coffee.
 */
public class MainActivity extends AppCompatActivity {

    int quantity = 0;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
    }

    /**
     * This method is called when the order button is clicked.
     */
    public void increment(View view) {
        quantity=quantity+1;
        if (quantity>100)
        {
            Toast.makeText(this, "You cannot have more than 100 cups of coffee", Toast.LENGTH_SHORT).show();
            quantity = 100;
        }
        displayQuantity(quantity);
    }

    public void decrement(View view) {
        quantity =quantity-1;
        if (quantity<1)
        {
            Toast.makeText(this, "You cannot have less than 1 cup of coffee", Toast.LENGTH_SHORT).show();
            quantity = 1;
        }
        displayQuantity(quantity);
    }

    public void submitOrders(View view) {
        EditText addNameEditText = (EditText) findViewById(R.id.name_field);
        String name =addNameEditText.getText().toString();

        EditText addSurnameEditText = (EditText) findViewById(R.id.surname_field);
        String surname =addSurnameEditText.getText().toString();


        CheckBox whippedCreamCheckBox = (CheckBox) findViewById(R.id.whipped_cream_checkbox);
        boolean hasWhippedCream = whippedCreamCheckBox.isChecked();

        CheckBox chocolateCheckBox = (CheckBox) findViewById(R.id.chocolate_checkbox);
        boolean hasChocolate = chocolateCheckBox.isChecked();

        CheckBox extraSugarCheckBox = (CheckBox) findViewById(R.id.extra_suggar_checkbox);
        boolean hasExtrSugar = extraSugarCheckBox.isChecked();

        int price=calculatePrice(hasWhippedCream,hasChocolate);
        String priceMessage=createOrderSummary(name,surname,price,hasWhippedCream,hasChocolate, hasExtrSugar);
        {
            Intent intent = new Intent(Intent.ACTION_SENDTO);
            intent.setData(Uri.parse("mailto:")); // only email apps should handle this
            intent.putExtra(Intent.EXTRA_SUBJECT, "Just Java order for " +name);
            intent.putExtra(Intent.EXTRA_TEXT,priceMessage);
            if (intent.resolveActivity(getPackageManager()) != null) {
                startActivity(intent);
            }
        }
       displayMessage(priceMessage);
    }

    private int calculatePrice(boolean addWhippedCream,boolean addChocolate){
        int basePrice=5;

        if (addWhippedCream)
        {
            basePrice=basePrice+1;
        }
        if (addChocolate);
        {
            basePrice=basePrice+2;
        }
        int price = quantity * basePrice;
        return price;
    }
    private String createOrderSummary(String addName, String addSurname, int price, boolean addWhippedCream,boolean addChocolate, boolean addExtraSugar){
        String priceMessage="Name:  " + addName;
        priceMessage+="\nSurname:   " +addSurname;
        priceMessage+="\nAdd Whipped Cream: " +addWhippedCream;
        priceMessage+="\nAdd Chocolate: " +addChocolate;
        priceMessage+="\nAdd Extra Sugar:   " +addExtraSugar;
        priceMessage+="\nQuantity:  " + quantity;
        priceMessage+="\nTotal:$   "+price;
        priceMessage+="\nThank you!";
        return priceMessage;
    }

    /**
     * This method displays the given quantity value on the screen.
     */
    private void displayQuantity(int number1) {
        TextView quantityTextView = (TextView) findViewById(R.id.quantity_text_view);

        quantityTextView.setText("" + number1);
    }

    /**
     * This method displays the given price on the screen.
     */

    /**
     * This method displays the given text on the screen.
     */
    private void displayMessage(String message) {
        TextView orderSummaryTextView = (TextView) findViewById(R.id.order_summary_view);
        orderSummaryTextView.setText(message);
    }
}

just java XML

<?xml version="1.0" encoding="utf-8"?>
<ScrollView
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    >


<LinearLayout
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:background="@drawable/images"
    tools:context="com.example.android.justjava.MainActivity">

    <EditText
        android:id="@+id/name_field"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:hint="Add Name"
        android:inputType="textCapWords" />
    <EditText
        android:id="@+id/surname_field"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:hint="Add Surname"
        android:inputType="textCapWords" />

    <TextView

        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:fontFamily="sans-serif"
        android:padding="10dp"
        android:text="Toppings"
        android:textColor="@android:color/darker_gray"
        android:textSize="16sp"
        android:textAllCaps="true"/>
    <CheckBox
        android:id="@+id/whipped_cream_checkbox"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:paddingLeft="24dp"
        android:layout_marginLeft="16dp"
        android:text="Whipped cream"
        android:textSize="16sp"
        />
    <CheckBox
        android:id="@+id/chocolate_checkbox"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:paddingLeft="24dp"
        android:layout_marginLeft="16dp"
        android:text="Chocolate"
        android:textSize="16sp"
        />
    <CheckBox
        android:id="@+id/extra_suggar_checkbox"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:paddingLeft="24dp"
        android:layout_marginLeft="16dp"
        android:text="Extra Sugar"
        android:textSize="16sp"
        />

    <TextView

        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:fontFamily="sans-serif"
        android:padding="10dp"
        android:text="Quantity"
        android:textColor="@android:color/darker_gray"
        android:textSize="16sp"
        android:textAllCaps="true"/>

<LinearLayout
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="horizontal">
    <Button
        android:id="@+id/plus_button"
        android:layout_width="50dp"
        android:layout_height="50dp"
        android:onClick="decrement"
        android:text="-" />
    <TextView
        android:id="@+id/quantity_text_view"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:fontFamily="sans-serif"
        android:text="0"
        android:paddingLeft="8dp"
        android:paddingRight="8dp"
        android:textColor="@android:color/black"
        android:textSize="24sp" />
    <Button
        android:id="@+id/minus_button"
        android:layout_width="50dp"
        android:layout_height="50dp"
        android:onClick="increment"
        android:text="+"
        android:textSize="20dp"/>
</LinearLayout>

    <TextView

        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:fontFamily="sans-serif"
        android:padding="10dp"
        android:text="Order Summary"
        android:textColor="@android:color/darker_gray"
        android:textSize="16sp"
        android:textAllCaps="true"/>
    <TextView

        android:id="@+id/order_summary_view"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:fontFamily="sans-serif"
        android:padding="10dp"
        android:text="$0"
        android:textColor="@android:color/black"
        android:textSize="16sp" />
    <Button
        android:id="@+id/next_button"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:padding="10dp"
        android:onClick="submitOrders"
        android:text="ORDER" />


</LinearLayout>
</ScrollView>