Android Firebase Realtime Database - Top ListView Examples.


Android Firebase Realtime Database ListView Examples.

What is ListView?

A ListView is an android widget that allows us to render a list of scrollable items.

ListView is an adapterview like gridview and spinner.

This means that it requires an adapter for it to insert its items. The adapter becomes responsible for pulling data from a content source.

This source can be an array or something more complex like database or from the network.

Not only that but the adapter will also be responsible for converting each item result into a view that will be placed into the listview.

This is because as an adapterview the ListView does not know the details, such as type and contents, of the views it contains.

So it will ask for the views on demand from a ListAdapter as needed. For instance it asks for these views as the user scrolls up or down.

Each of the views in the ListView is positioned immediately below the previous view in the list.

ListView API Definition

Here's ListView's API definition.

java.lang.Object
   ↳    android.view.View
       ↳    android.view.ViewGroup
           ↳    android.widget.AdapterView<android.widget.ListAdapter>
               ↳    android.widget.AbsListView
                   ↳    android.widget.ListView

Clearly you can see ListView is residing in the android.widget package and deriving from the abstract AbsListView class.

Top Android Firebase Realtime Database ListView Examples

Let's look at some examples.

Android Firebase ListView Master Detail  Tutorial.

This is an android firebase ListView Master Detail tutorial. How to save data to firebase,retrieve then show that data in a custom ListView.

  • Save data from edittext to google firebase database.
  • Retrieve the data by attaching events to a DatabaseReference instance.
  • Bind the data to a custom ListView using a BaseAdapter subclass.
  • Handle the ListView's itemClicks.
  • Open new Activity when a grid item is clicked.
  • Pass data to that new activity

Android Firebase Database ListView Tutorial.

This is an android firebase ListView tutorial. We see how to save data to firebase,retrieve then show that data in a custom ListView.

  • Save data from edittext to google firebase database.
  • Retrieve the data by attaching events to a DatabaseReference instance.
  • Bind the data to a custom gridview using Subclass.

So lets cover android firebase listview example.How to save from edittext,retrieve that particular data and of course show in a simple listview.

ListView is one of the most popular adapterviews while Firebase is probably the most popular database backend service currently in the market.

These two are easy to use and provides us with powerful opportunities to create amazing apps.

The Plan

This android firebase listview tutorial.This is what we do :

  • Save from edittext to google firebase database using methods setValue() and push();
  • Fetch that particular data by attaching a childEventListener to a databaseReference instance.
  • Read the children of a dataSnapshot.
  • Fill Simple ArrayList
  • Bind the arraylist to ListView

This is an Android Firebase ListView tutorial. We see how to save to Firebase from our android app, retrieve data, and show in a ListView.

The ListView will be rendered in our Master View.

Then when a ListView item is clicked we open a new activity, our detail activity. Our ListView will comprise a List of Spacecraft objects.

So in the detail view we show the details of the clicked Spacecraft.

Cheers.

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