private void connectToFireBase() {
rootRef.addChildEventListener(
new ChildEventListener() {
@Override
public void onChildAdded(DataSnapshot dataSnapshot, String s) {
ChatRoom chatRoom = dataSnapshot.getValue(ChatRoom.class);
Log.d(TAG, "Chat message Added. Text = " + chatRoom.getId());
updateAdapter(chatRoom);
}
@Override
public void onChildChanged(DataSnapshot dataSnapshot, String s) {
Log.d(TAG, "onChildChanged " + s);
}
@Override
public void onChildRemoved(DataSnapshot dataSnapshot) {}
@Override
public void onChildMoved(DataSnapshot dataSnapshot, String s) {}
@Override
public void onCancelled(FirebaseError firebaseError) {}
});
}
private void setupIntentAnswerUpdates() {
newMessageListener =
messagesRef.addChildEventListener(
new ChildEventListener() {
@Override
public void onChildRemoved(DataSnapshot arg0) {
// TODO Auto-generated method stub
}
@Override
public void onChildMoved(DataSnapshot arg0, String arg1) {
// TODO Auto-generated method stub
}
@Override
public void onChildChanged(DataSnapshot arg0, String arg1) {
// TODO Auto-generated method stub
}
@Override
public void onChildAdded(DataSnapshot dataSnapshot, String arg1) {
Message model = dataSnapshot.getValue(Message.class);
if (!username.equals(model.getAuthor())) {
intentAnswer.put("read", true);
}
}
@Override
public void onCancelled(FirebaseError arg0) {
// TODO Auto-generated method stub
}
});
}
// Method to add the neccessary event listeners to catch any new message entries on the database
protected void startReceivingMessages() {
// Create Event listener for all events(reading etc)
mainListener =
new ChildEventListener() {
// Retrieve new posts as they are added to the database - NB!!!
@Override
public void onChildAdded(DataSnapshot snapshot, String previousChildKey) {
Map<String, String> post =
snapshot.getValue(Map.class); // Get the Map object that was written
System.out.println("Message is :" + post.get("Message"));
mainView.receiveMessage(post.get("User"), post.get("Message"));
}
// METHODS NEEDED TO BE IMPLEMENTED FOR EVENT LISTENER - MUST BE ADDED TO
// Get the data on a post that has changed
@Override
public void onChildChanged(DataSnapshot snapshot, String previousChildKey) {}
// Get the data on a post that has been removed
@Override
public void onChildRemoved(DataSnapshot snapshot) {}
@Override
public void onChildMoved(DataSnapshot dataSnapshot, String s) {}
@Override
public void onCancelled(FirebaseError firebaseError) {}
};
// Add event listener on database
myFirebaseRef.addChildEventListener(mainListener);
}
@Override
protected void onCreate(Bundle savedInstanceState) {
activ = this;
dishes = new ArrayList<String>(20);
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_orders);
// Initialize the UI components
foodList = (ListView) findViewById(R.id.listView1);
// Create a reference to a Firebase location
ref =
new Firebase(
"https://uqtez5y2bki.firebaseio-demo.com/Restaurants/Restaurant 2/Tables/Table 2/Orders");
// Read data and react to changes
ref.addChildEventListener(
new ChildEventListener() {
@Override
public void onChildAdded(DataSnapshot snapshot, String previousChildName) {
Map s = snapshot.getValue(Map.class);
dishes.add(
snapshot.getName() + " " + ((Map) snapshot.getValue(Map.class)).get("Price"));
Log.i("Test", dishes.toString());
arrayAdapter =
new ArrayAdapter(activ, android.R.layout.simple_list_item_1, dishes.toArray());
// By using setAdapter method, you plugged the ListView with adapter
foodList.setAdapter(arrayAdapter);
}
@Override
public void onChildChanged(DataSnapshot snapshot, String previousChildName) {}
@Override
public void onChildRemoved(DataSnapshot snapshot) {
Map s = snapshot.getValue(Map.class);
dishes.remove(
snapshot.getName() + " " + ((Map) snapshot.getValue(Map.class)).get("Price"));
Log.i("Test", dishes.toString());
arrayAdapter =
new ArrayAdapter(activ, android.R.layout.simple_list_item_1, dishes.toArray());
// By using setAdapter method, you plugged the ListView with adapter
foodList.setAdapter(arrayAdapter);
}
@Override
public void onChildMoved(DataSnapshot snapshot, String previousChildName) {}
@Override
public void onCancelled(FirebaseError arg0) {}
});
foodList.setOnItemClickListener(
new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
view.setBackgroundColor(Color.GREEN);
String text = dishes.get(position);
String str = text.substring(text.indexOf(" "));
int num = Integer.parseInt(str.trim());
total += num;
}
});
}
