Question

I’ve got problem with my listview adapter.

Please check my code below:

public void onItemClick(AdapterView<?> parent, View v, int position, long id) {
    // TODO Auto-generated method stub
    String selected;

    selected = parent.getItemAtPosition(position).toString();

    if( selected == "Apple" ){
        Intent apple = new Intent(Fruits.this, Apples.class);
        startActivity(apple);
    }
    else if( selected == "Apricot" ){
        Intent apricot = new Intent(Fruits.this, Apricots.class);
        startActivity(apricot);
    }
    else if( selected == "Avocado" ){
        Intent avocado = new Intent(Fruits.this, Avocado.class);
        startActivity(avocado);
    }

} // end of OnItemClick method

Whenever I select a row, it’s throwing a nullpointerexception on this line:

        selected = parent.getItemAtPosition(position).toString();

What is the problem here? please help. thanks.

Answer 1

As per your excpetion use the following code,

selected = parent.getItem(position).toString();

Also you have used,

if( selected == "Apple" ){

Its not correct way to compare strings, Instead of it use,

if( selected.equals("Apple") ){