Android Firebase Realtime Database - Top Spinner Examples.


Android Firebase Realtime Database Spinner Examples.

What is Spinner?

Spinner is a view that displays items in a dropdown fashion, allowing user to pick one at a time.

Android Spinner

Spinner is an AdapterView. This means that it relies on an Adapter for its data.

Adapters act as the bridge between adapterviews and the underlying data source.

This makes Spinner like other adapterviews decoupled from data source. Hence we can customize the views shown in the spinner without affecting data.

Spinner is a concrete public class residing in the android.widget package.

package android.widget;

Spinner is a public class that's why we can access and use it.

public class Spinner{}

Public classes are visible even from other packages apart from those they've been defined.

Spinner class inherits from an abstract class called AbsSpinner. This class also resides in the android.widget package.

AbsSpinner provides to Spinner much of the capabilities it has. For example, Spinner is an adapterview since it derives from the AbsSpinner. This allows Spinner to set and return a SpinnerAdapter.

Top Android Firebase Realtime Database Spinner Examples

Let's look at some examples.

Hello guys.Here is the source for our android firebase spinner tutorial.

This is what we do :

  • Save to Firebase from edittext in android.
  • Retrieve data.
  • Show in a spinner

Cheers.

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