What method do we call on the ListView?

Question

In my "main" file (Main.java) all I want to do is call FileOperations.ReadFileasList("Installed_packages.txt"); and have it execute as it does .Calling onClick method with item in ListView - java - Stack OverflowCalling a method inside listview item click in android - Stack OverflowHow to get call object methods in ListView onClickListener?When is the getView() method of ListView called? - Stack OverflowДругие результаты с сайта stackoverflow.com

What is a ListView?

A list view is an adapter view that does not know the details, such as type and contents, of the views it contains. Instead list view requests views on demand from a ListAdapter as needed, such as to display new views as the user scrolls up or down. In order to display items in the list, call setAdapter(android.

What is required by a ListView in order to display the items?

A ListView is a type of AdapterView that displays a vertical list of scroll-able views and each view is placed one below the other. Using adapter, items are inserted into the list from an array or database. For displaying the items in the list method setAdaptor() is used.

How do you populate a ListView?

You need to do it through an ArrayAdapter which will adapt your ArrayList (or any other collection) to your items in your layout (ListView, Spinner etc.). This is what the Android developer guide says: A ListAdapter that manages a ListView backed by an array of arbitrary objects.

Which of the following methods is used to link array adapter with ListView?

Another method used is getItem() which is already present in the ArrayAdapter class and its task is to simply get the data item associated with the specified position in the data set which is associated with that ArrayAdapter .

Expert · Answer