@Override
public View getView(int i, View view, ViewGroup viewGroup) {
if (view == null) {
view = mActivity.getLayoutInflater().inflate(mLayout, viewGroup, false);
}
T model = mSnapshots.getItem(i).getValue(mModelClass);
// Call out to subclass to marshall this model into the provided view
populateView(view, model);
return view;
}
/**
* @param activity The activity containing the ListView
* @param modelClass Firebase will marshall the data at a location into an instance of a class
* that you provide
* @param 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.
* @param ref The Firebase location to watch for data changes. Can also be a slice of a location,
* using some combination of <code>limit()</code>, <code>startAt()</code>, and <code>endAt()
* </code>,
*/
public FirebaseListAdapter(Activity activity, Class<T> modelClass, int modelLayout, Query ref) {
mModelClass = modelClass;
mLayout = modelLayout;
mActivity = activity;
mSnapshots = new FirebaseArray(ref);
mSnapshots.setOnChangedListener(
new FirebaseArray.OnChangedListener() {
@Override
public void onChanged(EventType type, int index, int oldIndex) {
notifyDataSetChanged();
}
});
}
@Override
public long getItemId(int i) {
// http://stackoverflow.com/questions/5100071/whats-the-purpose-of-item-ids-in-android-listview-adapter
return mSnapshots.getItem(i).getKey().hashCode();
}
public Firebase getRef(int position) {
return mSnapshots.getItem(position).getRef();
}
@Override
public T getItem(int i) {
return mSnapshots.getItem(i).getValue(mModelClass);
}
@Override
public int getCount() {
return mSnapshots.getCount();
}
public void cleanup() {
// We're being destroyed, let go of our mListener and forget about all of the mModels
mSnapshots.cleanup();
}
