A theme is a style applied to an activity or the whole application. To set a theme, use the android:theme
attribute in the AndroidManifest.xml
file. The theme
attribute applies to the <Application>
element as well as the <Activity>
elements. All views within that element will be styled with the theme specified.
It's common to set the application theme, but then override a specific activity with a different theme.
In the previous recipe, we set textViewStyle
using the AppTheme
style (which the wizard created automatically). In this recipe, you will learn how to set both the application and activity themes.
Along with the style settings we have already explored, there are additional style options we didn't discuss because they don't apply to a View, they apply to the window as a whole. Settings such as hiding the application title or action bar and setting the window background, just to name a few, apply to the window and therefore must be set as a theme...