What is the difference between using theme and style when developing an interface in Android?

In Android, theme and style are different concepts for interface design:

• Style is a set of attributes that can be applied to a single View or a group of Views. For example, you can define a style for buttons with a specific color, text size, and padding.

• Theme is a style applied to the entire Activity or application. A theme sets the basic colors, fonts, and other attributes that are inherited by all interface elements within that context.

Example:

• A style can be applied to a specific button:

<style name="MyButtonStyle">
    <item name="android:background">#FF0000</item>
    <item name="android:textColor">#FFFFFF</item>
</style>

<Button
    style="@style/MyButtonStyle"
    android:text="Click me" />

• A theme is set in the manifest or via setTheme() and affects all elements:

<style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
    <item name="colorPrimary">#3F51B5</item>
    <item name="colorAccent">#FF4081</item>
</style>

Thus, a theme is a global style for the entire application or Activity, while a style is a local set of attributes for individual Views.