How to make a listview(already created) clickable (Android)?

I made a list and now I want when the user clicks an item, it opens a new screen showing the PKMN data. Here's my code:

Kanto.class

public class Kanto extends ActionBarActivity {

//fasendu listaa = making list
ListView listView; //criandu var = making variable
String[] pokemonsKanto = {
        "#1 Bulbasaur", "#2 Ivysaur", "#3 Venusaur"
}; //lista = list

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_kanto);

    //continuandu a lista = the other part to the list work
    listView = (ListView) findViewById(R.id.listView);
    ArrayAdapter<String> array = new ArrayAdapter<String>(this,android.R.layout.simple_list_item_1, pokemonsKanto);
    listView.setAdapter(array);
    //lista cabada = finished
}


@Override
public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.kanto, menu);
    return true;
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    // Handle action bar item clicks here. The action bar will
    // automatically handle clicks on the Home/Up button, so long
    // as you specify a parent activity in AndroidManifest.xml.
    int id = item.getItemId();
    return id == R.id.action_settings || super.onOptionsItemSelected(item);
}

}

activity_kanto.xml

<RelativeLayout xmlns:android="http://ift.tt/nIICcg"
xmlns:tools="http://ift.tt/LrGmb4"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
android:paddingBottom="@dimen/activity_vertical_margin"
tools:context=".Kanto">

<ListView
    android:id="@+id/listView"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"></ListView>

How can I do that? Sorry, I'm a completely newbie .