Mastering Android Studio 3

Android styles

Graphical properties, such as background color, text size, and elevation, can all be set individually on any UI component. It often makes sense to group properties together into a style. Android stores such styles in the values directory as XML in the styles.xml file. An example of this is as follows:

<?xml version="1.0" encoding="utf-8"?> <resources>     <style name="TextStyle" parent="TextAppearance.AppCompat">         <item name="android:textColor">#8000</item>         <item name="android:textSize">48sp</item>     </style> </resources> 

Styles, such as this, can be applied to views and widgets simply and without having to specify each property, as follows:

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

It is quite possible ...