Android ArrayList item in ListView

Question

So I have this list which uses values from an ArrayList (and I can't use String[] because the user must add items to the list, and I can't do .add to the String[]). But now I have problems with onItemClick method. I want to get the text from item selected, and my book says the following should work:

@Override
public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, long arg3) {
    dodaj.setText(values[arg2]);

}

But I get the following error: The type of the expression must be an array type but it resolved to ArrayList What should I do to fix it?

Answer 1

is "values" an ArrayList? if so use

dodaj.setText( (String)values.get( arg2 ) );

Answer 2

you will have to convert arraylist to array using arraylist.toarray()

Answer 3

With ArrayList you always use

arrayList.get(index);

Recommended way is to add a toString() method to your items/Objects so that it returns the preferred field.

public Student()
{
    ...
    ...
    public String toString()
    {
        return firstName + " " + lastName;
    }
}

Now you can use arrayList.get(int index). It will print our the output of toString().