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.
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. The items come from the ExpandableListAdapter associated with this view.
How to create Expandable list view in android?
Android ExpandableListView
- setChildIndicator(Drawable) : This is used to show an indicator besides each item representing the current state.
- setGroupIndicator(Drawable) : An indicator is drawn besides the group representing its state i.e. expanded or collapsed.
- getGroupView() : It returns view for the list group header.
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 I change the icon on expandable list view?
- Post the listView row xml.
- @RajeshCP see update one.
- 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 list?
ExpandableListView in Android Studio – YouTube
How do you use the recycler view?
Using a RecyclerView has the following key steps:
- Define a model class to use as the data source.
- Add a RecyclerView to your activity to display the items.
- Create a custom row layout XML file to visualize the item.
- Create a RecyclerView.
- Bind the adapter to the data source to populate the RecyclerView.
What are Android fragments?
According to the Android documentation, a fragment is a part of applications user interface that is bound to an activity. Fragments have their lifecycle and layouts or UI components. Fragments help enrich your UI design, pass data between different screens, and adapt to different device configurations.
What is ListView how do you use it in Android application explain with example?
setAdaptor() method conjoins an adapter with the list. Android ListView is a ViewGroup that is used to display the list of items in multiple rows and contains an adapter that automatically inserts the items into the list.
…
activity_main. xml.
| Parameter | Description |
|---|---|
| objects | objects to display in the ListView |
How do you make a collapsible list in HTML?
Close the head portion of the page, with the ending tag for the head of the page (</head>). Create the body of the HTML code. Type the tag for starting the body (<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 I make collapsible sections in Word?
Collapse or expand parts of a document
Place your cursor in the heading. On the HOME tab, in the Paragraph group, click the dialog box launcher. In the Paragraph dialog box, click the checkbox next to Collapsed by default. Click OK.
Which is better ListView or RecyclerView?
Simple answer: You should use RecyclerView in a situation where you want to show a lot of items, and the number of them is dynamic. ListView should only be used when the number of items is always the same and is limited to the screen size.
What is recycler view?
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.
What is virtual device in Android?
An Android Virtual Device (AVD) is a configuration that defines the characteristics of an Android phone, tablet, Wear OS, Android TV, or Automotive OS device that you want to simulate in the Android Emulator. The Device Manager is an interface you can launch from Android Studio that helps you create and manage AVDs.
Why onActivityCreated is deprecated?
Need for onActivityCreated() deprecation
In such similar fashion android developers saw the tight coupling of code dependent to the Activity’s life cycle. And they decided that it is not a good practice anymore to be dependent on the activity attach to do certain things inside the fragment.
What type of data does a ListView take?
Answer: The ListView is the view that has the complete groups several items as well as it mainly display vertical scrollable list. List items has been automatically inserted with list using an Adapter pulls content from a source such as an array or database.
What is accordion in HTML?
An accordion is used to show (and hide) HTML content. Use the w3-hide class to hide the accordion content.
How do you toggle data in HTML?
Just add data-toggle=”collapse” and a data-target to element to automatically assign control of a collapsible element. The data-target attribute accepts a CSS selector to apply the collapse to. Be sure to add the class collapse to the collapsible element.
How do you add expand and collapse in Word?
To collapse or expand all the headings in your document, right-click the heading and click Expand/Collapse > Expand All Headings or Collapse All Headings. When you close and reopen a document, the headings will be expanded by default. If you want the document to open with the headings collapsed, follow these steps.
How do I turn off expand and collapse in Word?
“Expand/Collapse is a feature built-in to all the default heading styles in Word except for No Space and Normal. There is no option to disable the Expand/Collapse feature unless you will be using the Normal style or you will be creating a custom style based on the Normal formatting.”
What can I use instead of RecyclerView?
you can use listview insted of recycle view. ListView was the original View provided for list item screen. For memory management point of view ListView with ViewHolder pattern was used but it had its own drawback.
What is difference between GridView and ListView?
The main difference between ListView and GridView is how it lays out its child. With ListView you are laying your children one by one either vertically or horizontally only. With GridView, its a combination of both. It lays its children horizontally first.
Is RecyclerView deprecated?
Today, suddenly Recyclerview. Viewholder became deprecated. Other, android project is no deprecated.
What is DDMS Android?
Android ships with a debugging tool called the Dalvik Debug Monitor Server (DDMS), which provides port-forwarding services, screen capture on the device, thread and heap information on the device, logcat, process, and radio state information, incoming call and SMS spoofing, location data spoofing, and more.
How do I debug an Android app?
Select a device to debug your app on. Set breakpoints in your Java, Kotlin, and C/C++ code. Examine variables and evaluate expressions at runtime.
Attach the debugger to a running app
- Click Attach debugger to Android process .
- In the Choose Process dialog, select the process you want to attach the debugger to.
- Click OK.