How do I change the icon on expandable list view?

How do I change the icon on expandable list view?

1. Post the listView row xml.
2. @RajeshCP see update one.
3. Onclick of the onItemClick function you can change the source of the group_indicator for that you need a uparrow button or else you can rotate the bitmap by some dregree and set it as a source for that ImageView.

How do you make an expandable view?

Approach

1. Step 1: Create a New Project in Android Studio.
2. Step 2: Add the CardView Dependency.
3. Step 3: Add all the Required Drawable Resources in the Drawable Folder.
4. Step 4: Modify the XML Layout.
5. Step 5: Modify the Java File.

What is ExpandableListView in android?

android.widget.ExpandableListView. 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. The items come from the ExpandableListAdapter associated with this view.

How to remove child divider in ExpandableListView android?

If you want to completely remove dividers from ExpandableListView , setDividerHeight is ok for both parent and child items. Child divider will be draw using the same height as the normal divider or set by setDividerHeight() .

What is expandable list view?

Android ExpandableListView is a view that is used to shows items as a vertically scrolling two-level list. The basic difference with ListView is it allows two levels of the display which are groups that can be easily expanded and collapsed by touching to view and their respective children’s items.

How do you get a child position in ExpandableListView?

You have to use Adapter’s getChild(groupPosition, childPosition) method to retrieve the instance of child.

How do you get a child position in Expandablelistview?

How do you use the recycler view?

Using a RecyclerView has the following key steps:

1. Define a model class to use as the data source.
2. Add a RecyclerView to your activity to display the items.
3. Create a custom row layout XML file to visualize the item.
4. Create a RecyclerView.
5. Bind the adapter to the data source to populate the RecyclerView.

What is onChildClick?

onChildClick(ExpandableListView parent, View v, int groupPosition, int childPosition, long id) Callback method to be invoked when a child in this expandable list has been clicked.

How do you display data in a recycler view?

Layout for our item (Design for a city)

1. Add ImageView. Name it “image” Set scaleType to fitStart.
2. Add first TextView. Name it “name” Change text to “(name)”
3. Add second TextView. Name it “description” Change text to “(description)”
4. After you link all the constraints the screen should look something like this.

Why RecyclerView is efficient?

RecyclerView makes it easy to efficiently display large sets of data. You supply the data and define how each item looks, and the RecyclerView library dynamically creates the elements when they’re needed. As the name implies, RecyclerView recycles those individual elements.

Is GridView deprecated?

Both GridView and GridLayout are safe for use in production code. They are obsolete, and I would not recommend that anyone use them, but they are safe. You are contradicting yourself. First you say GridView and GridLayout are not deprecated, then you say they are both obsolete, but safe.

What is RecyclerView and how it works?

RecyclerView is the ViewGroup that contains the views corresponding to your data. It’s a view itself, so you add RecyclerView into your layout the way you would add any other UI element. Each individual element in the list is defined by a view holder object.