just java coffee App

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"You are two cups away from free drink" I just liked this statement : )


App progress.



JAVA CODE for MainActivity

/** * 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.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.TextView;
import java.text.NumberFormat;

/** * This app displays an order form to order coffee. */
public class MainActivity extends AppCompatActivity {
    int numberOfCoffees = 2;


    @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 submitOrder(View view) {
//        display(numberOfCoffees);  //      displayPrice(numberOfCoffees * 5);
        String pricetext = " You've won a free Gift ";
        displayMessage( pricetext );
    }

    public void increment(View view){
        numberOfCoffees = numberOfCoffees + 1;
        display(numberOfCoffees);
        displayPrice(numberOfCoffees * 5);
    }

    public void decrement (View view){
        numberOfCoffees = numberOfCoffees - 1;
        display(numberOfCoffees);
        displayPrice(numberOfCoffees * 5);
    }

    /**     * This method displays the given quantity value on the screen.     */    private void display(int number) {
        TextView quantityTextView = (TextView) findViewById(R.id.quantity_text_view);
        quantityTextView.setText("" + number);
    }


    /**     * This method displays the given price on the screen.     */    private void displayPrice(int number) {
        TextView priceTextView = (TextView) findViewById(R.id.price_text_view);
        priceTextView.setText(NumberFormat.getCurrencyInstance().format(number));
    }


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




}

XML CODES FOR activityMain

<?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"    android:padding="16dp"    tools:context=".MainActivity">

    <TextView        android:id="@+id/quantity"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:paddingTop="16dp"        android:text="Quantity!"        android:textAllCaps="true"        android:textColor="@color/colorPrimary"        android:textSize="20sp" />


    <Button        android:id="@+id/increment_button"        android:layout_width="40dp"        android:layout_height="wrap_content"        android:layout_below="@id/quantity"        android:layout_marginLeft="17dp"        android:layout_marginTop="0dp"        android:layout_marginRight="16dp"        android:layout_toRightOf="@+id/quantity_text_view"        android:onClick="increment"        android:text="+" />

    <TextView        android:id="@+id/quantity_text_view"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_below="@id/quantity"        android:paddingLeft="56dp"        android:layout_marginTop="8dp"        android:paddingTop="0dp"
        android:text="0"        android:textColor="@android:color/black"        android:textSize="20sp" />


    <Button        android:id="@+id/decrement_button"        android:layout_width="40dp"        android:layout_height="wrap_content"        android:layout_below="@id/quantity"        android:layout_marginLeft="0dp"        android:layout_marginTop="0dp"        android:onClick="decrement"        android:text="-"        android:textSize="20sp" />


    <TextView        android:id="@+id/price"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_below="@+id/quantity_text_view"        android:paddingTop="16dp"        android:text="Price!"        android:textAllCaps="true"        android:textColor="@color/colorPrimary"        android:textSize="20sp" />



    <TextView        android:id="@+id/price_text_view"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_below="@id/price"        android:paddingTop="16dp"        android:text="$ 0"        android:layout_marginLeft="8dp"        android:textColor="@android:color/black"        android:textSize="20sp" />




    <Button        android:id="@+id/button"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_below="@id/price_text_view"        android:layout_weight="1"        android:onClick="submitOrder"        android:paddingTop="16dp"        android:text="ORDER"        android:textSize="20sp" />


</RelativeLayout>

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