What is Expandable list?
Android ExpandableListView is a view that shows items in a vertically scrolling two-level list. It differs from a ListView by allowing two levels which are groups that can be easily expanded and collapsed by touching to view and their respective children items.
How do you show an expandable list?
In order to create an expandable list view, we need three xml layout files. First one is for main listview, 2nd one for list view group item and 3rd one is for list view child item. Open your activity_main. xml and add ExpandableListView element.
What is expandable list view?
A view that shows items in a vertically scrolling two-level list. This differs from the ListView by allowing two levels: groups which can individually be expanded to show its children.
How do I use ArrayAdapter?
To use a basic ArrayAdapter , you just need to initialize the adapter and attach the adapter to the ListView. First, we initialize the adapter: ArrayAdapter itemsAdapter = new ArrayAdapter(this, android. R.
How do you make an expandable list in flutter?
First Make an ExpandableContainer using AnimatedContainer. Then Make an ExpandableListView which will create a Column . The first child of Column will be a button to expand and Second will be ExpandableContainer . ExpandableContainer will have a ListView as its child.
How do you get a child position in ExpandableListView?
2 Answers. You have to use Adapter’s getChild(groupPosition, childPosition) method to retrieve the instance of child.
How do you make an expandable list in HTML?
Close the head portion of the page, with the ending tag for the head of the page (). Create the body of the HTML code. Type the tag for starting the body (). Create the list content, including some HTML styling information for the users browser to use, for them to expand and collapse the list.
How do you create an ArrayAdapter?
Steps to Implement the Custom ArrayAdapter
- Step 1: Create an Empty Activity project.
- Step 2: Working with the activity_main.xml.
- Step 3: Creating a custom View for ListView.
- Step 4: Create a custom class for custom layout.
- Step 5: Now create a custom ArrayAdapter class of the type NumbersView.
What is Adapter in Android with example?
An Adapter object acts as a bridge between an AdapterView and the underlying data for that view. The Adapter provides access to the data items. The Adapter is also responsible for making a View for each item in the data set. See also: ArrayAdapter.
How do you add expand and collapse in HTML?
Expand/Collapse Content
- Adding a collapsible content chunk. Expand the WYSIWYG toolbar so that you see the HTML button.
- Example (copy and paste into HTML window to get started)
- Expand/Collapse All.
- Editing the collapsible content.