Use android:textAppearance in TextView

How to Use android:textAppearance in TextView

added in API Level 1

Set the base text color, typeface, size and style.

1. Create an Android project, if you don't already have one.

2. Add a TextView in the main.xml file.

3. Add a file called style.xml to res/values and add the below code.
This will make the text size 40sp.

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <style name="myStyle" >
          <item name="android:textSize">40sp</item>
          <item name = "android:textColor">#FFFFFF</item>
          <item name ="android:textStyle">bold</item>
          <item name="android:typeface">sans</item>
  </style>
</resources>

4. In the main.xml file, add the code below.

<TextView
        ...
       android:textAppearance = "@style/myTextAppearanceStyle"
/>

5. Compile and run!

Resources:

http://developer.android.com/reference/android/widget/TextView.html#attr_android:textAppearance
http://developer.android.com/reference/android/R.attr.html#textAppearance
http://stackoverflow.com/questions/13416315/changing-the-text-appearance-in-styles-and-themes-for-an-android-app