R wird nicht aufgelöst in neue styles.xml Datei für Android

Question

Nur eine Datei styles.xml geschrieben, aber alle Verweise auf R sind nicht auflösend.

Hat eine saubere und wieder aufzubauen als Schritt ein, aber nicht das Problem beheben

Werte \ styles.xml Datei

<resources> 

    <!-- Base application theme. --> 
    <style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar"> 
     <!-- Customize your theme here. --> 
     <item name="colorPrimary">@color/colorPrimary</item> 
     <item name="colorPrimaryDark">@color/colorPrimaryDark</item> 
     <item name="colorAccent">@color/colorAccent</item> 
    </style> 



    <style name="ButtonStyle"> 
     <item name="android:layout_width">R.dimen.dimension_2</item> 
     <item name="android:layout_height">R.dimen.dimension_2</item> 
     <item name="android:layout_marginTop">R.dimen.dimension_1</item> 
     <item name="android:textColor">R.color.color_black</item> 
    </style> 


</resources> 

Werte \ dimens.xml Datei

<resources> 
    <!-- Default screen margins, per the Android Design guidelines. --> 
    <dimen name="activity_horizontal_margin">16dp</dimen> 
    <dimen name="activity_vertical_margin">16dp</dimen> 
    <dimen name="dimension_1">16dp</dimen> 
    <dimen name="dimension_2">48dp</dimen> 
    <dimen name="dimension_3">8dp</dimen> 
    <dimen name="dimension_4">24dp</dimen> 
    <dimen name="text_size_1">16sp</dimen> 
</resources> 

Datei MainActivity.java

/** 
* *Below added my unique package name "com.example.android.justjava3" 
*/ 

package com.example.android.justjava3; 
import android.content.Intent; 
import android.os.Bundle; 
import android.support.v7.app.AppCompatActivity; 
import android.util.Log; 
import android.view.View; 
import android.widget.CheckBox; 
import android.widget.EditText; 
import android.widget.TextView; 
import android.widget.Toast; 

/** 
* This app displays an order form to order coffee, and displays the information. 
* quantity is a global variable 
**/ 
public class MainActivity extends AppCompatActivity { 
    int quantity = 0; 

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

    /** 
    * This method increments and displays quantity. 
    */ 
    public void increment(View view) { 
     if (quantity == 100) {  //Allows out of range values initially 
      //show an error as toast 
      Toast.makeText(this, "You cannot have more than 100 coffees", Toast.LENGTH_SHORT).show(); 
      return; 
     } 
     quantity = quantity + 1; 

     /* 
     if (quantity <= 99) { 
     quantity = quantity + 1; 
     } 
     */ 
     displayQuantity(quantity); 
    } 

    /** 
    * This method decrements and displays quantity. 
    */ 
    public void decrement(View view) { 
     if (quantity == 1) {  //Allows out of range values initially 
      //show an error as toast 
      Toast.makeText(this, "You cannot have less than 1 coffee", Toast.LENGTH_SHORT).show(); 
      return; 
     } 
     quantity = quantity - 1; 

     /* if (quantity >=1) { 
     quantity = quantity - 1; 
     } 
     */ 
     displayQuantity(quantity); 
    } 


    /** 
    * This method displays the given quantity value on the screen. 
    */ 
    private void displayQuantity(int number) { 
     TextView quantityTextView = (TextView) findViewById(R.id.quantity_text_view); 
     quantityTextView.setText("" + number); /**I am receiving a message that this should be a resource value **/ 
    } 


    /** 
    * This method is called when the order button is clicked. 
    */ 

    public void submitOrder(View view) { 
     EditText nameTextView = (EditText) findViewById(R.id.name_text_view); 
     String inputName = nameTextView.getText().toString(); 

     CheckBox whippedCreamCheckBox = (CheckBox) findViewById(R.id.whipped_cream_checkbox); 
     boolean hasWhippedCream = whippedCreamCheckBox.isChecked(); 
     Log.v("MainActivity", "Has whipped cream: " + hasWhippedCream); 
     CheckBox chocolateCheckBox = (CheckBox) findViewById(R.id.chocolate_checkbox); 
     boolean hasChocolate = chocolateCheckBox.isChecked(); 
     Log.v("MainActivity", "Has chocolate: " + hasChocolate); 
     int price = calculatePrice(hasWhippedCream, hasChocolate); 
     String priceMessage = createOrderSummary(price, quantity, hasWhippedCream, hasChocolate, inputName); 

     //Create email intent using priceMessage string 
     Intent intent = new Intent(Intent.ACTION_SEND); 
     intent.setType("text/html"); 
     intent.putExtra(Intent.EXTRA_EMAIL, new String[]{"javamon@mindspring.com"}); 
     intent.putExtra(Intent.EXTRA_SUBJECT, "JustJava Coffee Order for " + inputName); 
     intent.putExtra(Intent.EXTRA_TEXT, priceMessage); 
     startActivity(Intent.createChooser(intent, "Send Email")); 
    } 

    /** 
    * Calculates the total price of the order. 
    * 
    * @param addWhippedCream is whether or not the user wants whipped cream topping 
    * @param addChocolate is whether or not the user wants chocolate topping 
    * @return total price 
    */ 
    private int calculatePrice(boolean addWhippedCream, boolean addChocolate) { 
     int differentialPrice = 5; 

     if (addWhippedCream) { 
      differentialPrice = differentialPrice + 1; 
     } 
     if (addChocolate) { 
      differentialPrice = differentialPrice + 2; 
     } 

     return quantity * differentialPrice; 
    } 


    /** 
    * This method creates the order summary and returns a string. 
    * 
    * @param price   of the order 
    * @param addWhippedCream informs whether the customer wants whipped cream 
    * @return text summary 
    */ 
    private String createOrderSummary(int price, int quantity, boolean addWhippedCream, boolean addChocolate, String inputName) { 
     String priceMessage = getString(R.string.text_line_11) + inputName; 
     priceMessage += "\n" + getString(R.string.text_line_12) + addWhippedCream; 
     priceMessage += "\n" + getString(R.string.text_line_13) + addChocolate; 
     priceMessage += "\n" + getString(R.string.text_line_14) +  quantity; 
     priceMessage += "\n" + getString(R.string.text_line_15) + price; 
     priceMessage += "\n" + getString(R.string.text_line_16); 
     return priceMessage; 
    } 

} 

**activity_main.xml file** 

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

<ScrollView 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="com.example.android.justjava3.MainActivity"> 


<LinearLayout 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    android:layout_marginLeft="@dimen/dimension_1" 
    android:orientation="vertical"> 


    <EditText 
     android:id="@+id/name_text_view" 
     android:layout_width="fill_parent" 
     android:layout_height="wrap_content" 
     android:hint="@string/text_person_name" 
     android:inputType="textPersonName" /> 

    <TextView 
     android:id="@+id/label_text_view_3" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:layout_marginTop="@dimen/dimension_1" 
     android:text="@string/text_line_8" 
     android:textAllCaps="true" 
     android:textSize="@dimen/text_size_1" /> 


    <CheckBox 
     android:id="@+id/whipped_cream_checkbox" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:layout_marginTop="@dimen/dimension_1" 
     android:paddingLeft="@dimen/dimension_4" 
     android:text="@string/text_line_9" 
     android:textSize="@dimen/text_size_1" /> 

    <CheckBox 
     android:id="@+id/chocolate_checkbox" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:layout_marginTop="@dimen/dimension_1" 
     android:paddingLeft="@dimen/dimension_4" 
     android:text="@string/text_line_10" 
     android:textSize="@dimen/text_size_1" /> 

    <TextView 
     android:id="@+id/label_text_view_1" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:layout_marginTop="@dimen/dimension_1" 
     android:text="@string/text_line_1" 
     android:textAllCaps="true" 
     android:textSize="@dimen/text_size_1" /> 

    <LinearLayout 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:orientation="horizontal"> 


     <Button 
      android:id="@+id/button_1" 
      style="@style/ButtonStyle" 
      android:layout_width="@dimen/dimension_2" 
      android:layout_height="@dimen/dimension_2" 
      android:onClick="increment" 
      android:text="@string/text_line_2" 
      android:textAllCaps="true" 
      android:textSize="@dimen/text_size_1" /> 


     <TextView 
      android:id="@+id/quantity_text_view" 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" 
      android:layout_marginTop="@dimen/dimension_1" 
      android:layout_toRightOf="@id/button_1" 
      android:text="@string/text_line_3" 
      android:textColor="@color/color_black" 
      android:textSize="@dimen/text_size_1" /> 

     <Button 
      android:id="@+id/button_2" 
      android:layout_width="@dimen/dimension_2" 
      android:layout_height="@dimen/dimension_2" 
      android:layout_marginTop="@dimen/dimension_1" 
      android:layout_toRightOf="@id/quantity_text_view" 
      android:onClick="decrement" 
      android:text="@string/text_line_4" 
      android:textAllCaps="true" 
      android:textColor="@color/color_black" 
      android:textSize="@dimen/text_size_1" /> 

    </LinearLayout> 


    <Button 
     android:id="@+id/button_3" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:layout_marginTop="@dimen/dimension_1" 
     android:onClick="submitOrder" 
     android:text="@string/text_line_7" 
     android:textAllCaps="true" 
     android:textColor="@color/color_black" 
     android:textSize="@dimen/text_size_1" /> 


</LinearLayout> 


</ScrollView> 

Answer 1

<style name="ButtonStyle"> 
    <item name="android:layout_width">@dimen/dimension_2</item> 
    <item name="android:layout_height">@dimen/dimension_2</item> 
    <item name="android:layout_marginTop">@dimen/dimension_1</item> 
    <item name="android:textColor">@colors/color_black</item> 
</style> 

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