Continued...

1. Prof. Neeraj Bhargava
Vishal Dutt
Department of Computer Science, School of
Engineering & System Sciences
MDS University, Ajmer

2. Toast Location example
toast.setGravity(Gravity.TOP|Gravity.LEFT, 0, 0);

3. Modifying Your List
 How do I add more items?
 How can I add a set of items?
 How do I clear all items?

4. ArrayAdapter Helper Methods
 add(T Object) – Adds the specified object to the end of the array.
 addAll(T… items) – Adds the specified items at the end of the
array.
 clear() – Remove all elements from the list

5. ArrayAdapter Helper Methods
 notifyDataSetChanged() – notification that the underlying
data has been changed and that the View should refresh itself.
 remove(T Object) – Removes the specified object from the array.

6. ArrayAdapter Helper Methods
 getItem(int position) – gets Object at specified position in
adapter.
 getPosition(T item) – Returns the position of the specified item
in the array.

7. ArrayAdapter Abilities
 Filtering – filter data by a certain constraint
 Only show data that begins with the letter “S.”
 Sorting – sort the contents of the adapter using a
specified comparator.
 Sort by alpha A-Z, alpha Z-A, etc.

8. Questions
 Explain ArrayAdapter Helper methods?
 Explain any one Method with suitable example?