How to strikethrough ListView item while populating ListView

Question

so I have this huge problem with applying a strikethrough on a ListView item while populating it from the List of my objects.

    private void setListItems() {
        DatabaseHandler db = new DatabaseHandler(this);
        List<ToDoTask> taskList = db.getAllTasks();

        for (ToDoTask tt : taskList) {
            this.listAdapter.add(tt.getName());
        }

        this.listAdapter.notifyDataSetChanged();
    }

This part of the code populates my ListView. Now i want to add a strikethrough to item if

    tt.getActive() == 0

I don't know how can i get a TextView item from my ListView. I tried in my for loop to:

    TextView textView = (TextView) this.listView.getChildAt(this.listView.getCount() -1);

but the app crashes. The only solution that didn't crash my app was:

    TextView textView = this.listAdapter.getView(this.listView.getCount() -1, null, null)

but it didn't actually change anything in the ListView. I think it's not referencing the object itself. Here's some code that instantiates my variables:

    this.listView = (ListView) findViewById(R.id.listViewItem);
    this.listItems = new ArrayList<String>();
    this.listAdapter = new ArrayAdapter<String>(this, 
            android.R.layout.simple_list_item_1, this.listItems);
    this.listView.setAdapter(this.listAdapter);

Answer 1

The list view is not in charge of instantiating or modifying the underlying state of the views it contains. That's the job of the adapter. When you scroll a ListView, it calls the adapter method getView() and the adapter will hand it a row (possibly a recycled view from the rows that scrolled off-screen).

Inside the getView() method, the adapter should consult the underlying data set and modify the row as needed - that would include crossing out text, or setting any visual properties of the row content.