How do I link a listview element with Firebase object?

Question

In the main activity, there's a listview which shows all the objects pushed to the database using displayAllItems() method:

private void displayAllItems(){
        ListView listOfItems = (ListView) findViewById(R.id.list_of_items);
        FirebaseListAdapter<Item> adapter = new FirebaseListAdapter<Item>(this, Item.class, R.id.list_item, FirebaseDatabase.getInstance().getReference()) {
            @Override
            protected void populateView(View v, Item model, int position) {
                TextView type, subtype, name;
                type = v.findViewById(R.id.item_type);
                subtype = v.findViewById(R.id.item_subtype);
                name = v.findViewById(R.id.item_name);

                type.setText(model.getType());
                subtype.setText(model.getSubtype());
                name.setText(model.getName());
            }
        };
        listOfItems.setAdapter((adapter));
    }

The listview only shows info from 3 fields of Item class objects. How do I get additional information about an item by clicking on it in listview, so I can use this data in a new activity?

Answer 1

Use setOnItemClickListener to click on each item in the listView:

listOfItems.setOnItemClickListener(new OnItemClickListener(){   
    @Override
    public void onItemClick(AdapterView<?>adapter,View v, int position){
        Item item = (Item) adapter.getItemAtPosition(position);

        Intent intent = new Intent(CurrentActivity.this, NewActivity.class);    
        intent.putExtra("type",item.getType());
        startActivity(intent);
    }
});

getItemAtPosition() will get data associated with the specified position in the list. Then use the getters of your class to get the data and send it to the next activity using intent