title: How to use EditText user input, increment and decrement buttons values in android
body: <p>I'm kinda new to android. So I'm trying calculate the price of something using EditText instead of ListView, and I have increment and decrement buttons included to increase the value on the EditText component. </p>
  
  <p>So the increment and decrement buttons are working okay. They are decrementing and incrementing the value in EditText, and are calculating the price just fine, but when I type in the EditText instead of using the buttons the value I typed doesn't get used. </p>
  
  <p>Here's my Code.</p>
  
  <p>XML</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
  &lt;RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
      xmlns:tools="http://schemas.android.com/tools"
      android:layout_width="match_parent"
      android:layout_height="match_parent"
      tools:context=".MainActivity"&gt;
  
      &lt;ImageView
          android:layout_width="match_parent"
          android:layout_height="match_parent"
          android:scaleType="centerCrop"
          android:src="@drawable/latte" /&gt;
  
      &lt;TextView
          android:id="@+id/quantitytxt_textview"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:padding="10dp"
          android:text="Quantity ( Cup(s) )"
          android:textAllCaps="true"
          android:textColor="@android:color/white"
          android:textSize="16sp" /&gt;
  
      &lt;Button
          android:id="@+id/decrementButton"
          android:layout_width="50dp"
          android:layout_height="wrap_content"
          android:layout_below="@id/quantitytxt_textview"
          android:onClick="decrement"
          android:text="-"
          android:textSize="15sp" /&gt;
  
      &lt;EditText
          android:id="@+id/quantity_textview"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:layout_below="@id/quantitytxt_textview"
          android:layout_toRightOf="@id/decrementButton"
          android:padding="10dp"
          android:inputType="text"
          android:text="0"
          android:textColor="@android:color/white"
          android:textSize="16sp" /&gt;
  
      &lt;Button
          android:id="@+id/incrementButton"
          android:layout_width="50dp"
          android:layout_height="wrap_content"
          android:layout_below="@id/quantitytxt_textview"
          android:layout_toRightOf="@id/quantity_textview"
          android:onClick="increment"
          android:text="+"
          android:textSize="15sp" /&gt;
  
      &lt;TextView
          android:id="@+id/pricetxt_textview"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:layout_below="@id/quantity_textview"
          android:padding="10dp"
          android:text="Price (1 Cup = KES 5)"
          android:textAllCaps="true"
          android:textColor="@android:color/white"
          android:textSize="16sp" /&gt;
  
      &lt;TextView
          android:id="@+id/price_textview"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:layout_below="@id/pricetxt_textview"
          android:padding="10dp"
          android:text="KES 0"
          android:textColor="@android:color/white"
          android:textSize="16sp" /&gt;
  
  
      &lt;Button
          android:id="@+id/myButton"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:layout_below="@id/price_textview"
          android:onClick="submitOrder"
          android:text="Order"
          android:textSize="15sp" /&gt;
  
  &lt;/RelativeLayout&gt;
  </code></pre>
  
  <p>Java</p>
  
  <pre><code>package com.teqqli.justjava;
  
  import android.os.Bundle;
  import android.support.v7.app.AppCompatActivity;
  import android.text.Editable;
  import android.view.View;
  import android.widget.EditText;
  import android.widget.TextView;
  
  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 submitOrder(View view) {
          int price = quantity*5;
          displayPrice(price);
      }
  
      public void increment (View view) {
          quantity = quantity + 1;
          display(quantity);
      }
  
      public void decrement (View view) {
          if (quantity&gt;0){
              quantity = quantity - 1;
              display(quantity);
          }
      }
  
      /**
       * This method displays the given quantity value on the screen.
       */
      private void display(int number) {
          EditText quantityText = (EditText) findViewById(R.id.quantity_textview);
          quantityText.setText("" + number);
      }
  
      /**
       * This method displays the given price on the screen.
       */
      private void displayPrice(int number) {
          TextView priceTextView = (TextView) findViewById(R.id.price_textview);
  //        priceTextView.setText(NumberFormat.getCurrencyInstance().format(number));
          priceTextView.setText("KES " + number);
      }
  }
  </code></pre>
  
  <p>Kindly can anyone assist me?</p>