How to get Selected items from Multi Select List View

I am using an array adapter and to this am adding an array list of string s , the list is multi select , How can i get the values of list items clicked ?

my_contacts_list.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE);
ArrayAdapter<String> adapter=new ArrayAdapter<String>(this, android.R.layout.simple_list_item_multiple_choice,conts_list);
  my_contacts_list.setAdapter(adapter);

I was trying to do this ,

SparseBooleanArray positions = my_contacts_list.getCheckedItemPositions();
  int size=positions.size();
  int i=0;
  while(i <= size){
   conts_list.get(positions.get(i));
   i++;
  }

But position.get(i) is an array list , how to retrieve the selected items then ?

SparseBooleanArray.get returns a boolean, but I believe you need to check it for each position in your list, e.g.

int len = listView.getCount();
SparseBooleanArray checked = listView.getCheckedItemPositions();
for (int i = 0; i < len; i++)
 if (checked.get(i)) {
  String item = cont_list.get(i);
  /* do whatever you want with the checked item */
 }

This API is a mess. Here is what works for me.

SparseBooleanArray checked = tags.getCheckedItemPositions();
for (int i = 0; i < checked.size(); i++) {
    if(checked.valueAt(i)) {
        Tag tag = (Tag) tags.getItemAtPosition(checked.keyAt(i));
        Log.i("xxxx", i + " " + tag);
    }
}

I believe the fastest way to get the info out of this SparseArray is to iterate over the keys (actually I'm fairly sure that the solutions above won't work in all cases). The ListView will enter a pair (index, true) into the SparseBooleanArray for every selected index.

So the code might look like this:

SparseBooleanArray checked = lv.getCheckedItemPositions();
int size = checked.size(); // number of name-value pairs in the array
for (int i = 0; i < size; i++) {
    int key = checked.keyAt(i);
    boolean value = checked.get(key);
    if (value)
        doSomethingWithSelectedIndex(key);
}