com.firebase.ui.database

Class FirebaseIndexListAdapter<T>

java.lang.Object

android.widget.BaseAdapter

com.firebase.ui.database.FirebaseListAdapter<T>

com.firebase.ui.database.FirebaseIndexListAdapter<T>

Type Parameters:

T - The class type to use as a model for the data contained in the children of the given Firebase location

All Implemented Interfaces:

android.widget.Adapter, android.widget.ListAdapter, android.widget.SpinnerAdapter

public abstract class FirebaseIndexListAdapter<T>
extends FirebaseListAdapter<T>

This class is a generic way of backing an Android ListView with a Firebase location. It handles all of the child events at the given Firebase location. It marshals received data into the given class type. Extend this class and provide an implementation of populateView, which will be given an instance of your list item mLayout and an instance your class that holds your data. Simply populate the view however you like and this class will handle updating the list as the data changes.

If your data is not indexed:

     DatabaseReference ref = FirebaseDatabase.getInstance().getReference();
     ListAdapter adapter = new FirebaseListAdapter(
             this,
             ChatMessage.class,
             android.R.layout.two_line_list_item,
             keyRef,
             dataRef)
     {
         protected void populateView(View view, ChatMessage chatMessage, int position)
         {
             ((TextView)view.findViewById(android.R.id.text1)).setText(chatMessage.getName());
             ((TextView)view.findViewById(android.R.id.text2)).setText(chatMessage.getMessage());
         }
     };
     listView.setListAdapter(adapter);
 

Field Summary

Fields inherited from class com.firebase.ui.database.FirebaseListAdapter

mActivity, mLayout

Fields inherited from interface android.widget.Adapter

IGNORE_ITEM_VIEW_TYPE, NO_SELECTION

Constructor Summary

Constructors

Constructor and Description
FirebaseIndexListAdapter(android.app.Activity activity, java.lang.Class<T> modelClass, int modelLayout, Query keyRef, Query dataRef)

Method Summary

Methods inherited from class com.firebase.ui.database.FirebaseListAdapter

cleanup, getCount, getItem, getItemId, getRef, getView, onCancelled, onChildChanged, onDataChanged, parseSnapshot, populateView

Methods inherited from class android.widget.BaseAdapter

areAllItemsEnabled, getDropDownView, getItemViewType, getViewTypeCount, hasStableIds, isEmpty, isEnabled, notifyDataSetChanged, notifyDataSetInvalidated, registerDataSetObserver, unregisterDataSetObserver

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

FirebaseIndexListAdapter

public FirebaseIndexListAdapter(android.app.Activity activity,
                                java.lang.Class<T> modelClass,
                                @LayoutRes
                                int modelLayout,
                                Query keyRef,
                                Query dataRef)

Parameters:

activity - The activity containing the ListView

modelClass - Firebase will marshall the data at a location into an instance of a class that you provide

modelLayout - This is the layout used to represent a single list item. You will be responsible for populating an instance of the corresponding view with the data from an instance of modelClass.

keyRef - The Firebase location containing the list of keys to be found in dataRef. Can also be a slice of a location, using some combination of limit(), startAt(), and endAt().

dataRef - The Firebase location to watch for data changes. Each key key found in keyRef's location represents a list item in the ListView.