Example of using Color Resource

Color XML resource that carries a color value (a hexadecimal color).

The value always begins with a pound (#) character and then followed by the Alpha-Red-Green-Blue information in one of the following formats:

• #RGB
• #ARGB
• #RRGGBB
• #AARRGGBB

create /res/values/colors.xml to add our Color Resources in XML

<?xml version="1.0" encoding="utf-8"?>
<resources>
<color name="background_color">#f0f0f0</color>
<color name="text_color_red">#ff0000</color>
</resources>

Modify main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
   android:orientation="vertical"
   android:layout_width="fill_parent"
   android:layout_height="fill_parent"
   android:background="@color/background_color"
   >
<TextView
   android:id="@+id/text"
   android:layout_width="fill_parent"
   android:layout_height="wrap_content"
   android:text="@string/hello"
   />
</LinearLayout>

Java Code

package com.exercise.AndroidColorResources;

import android.app.Activity;
import android.os.Bundle;
import android.widget.TextView;

public class AndroidColorResources extends Activity {
   /** Called when the activity is first created. */
   @Override
   public void onCreate(Bundle savedInstanceState) {
       super.onCreate(savedInstanceState);
       setContentView(R.layout.main);
      
       TextView Text = (TextView)findViewById(R.id.text);
       Text.setTextColor(getResources().getColor(R.color.text_color_red));
   }
}

Download the files.