Android basics
Android provides a rich application framework that allows us to build innovative apps and games for mobile devices in a Java language environment.
From one component we can start another component using an intent. We can start a component in a different app, such an activity in a maps app to show an address. This model provides multiple entry points for a single app and allows any app to behave as a user's "default" for an action that other apps may invoke.
- Adapt to different devices
We don't need to create separate apps for different devices with different screen sizes. Android provides an adaptive app framework that allows us to provide unique resources for different device configurations. For example, we can create different XML layout files for different screen sizes and the system determines which layout to apply based on the current device's screen size.
