Inflating is the process of adding a view (. xml) to activity on runtime. When we create a listView we inflate each of its items dynamically. If we want to create a ViewGroup with multiple views like buttons and textview, we can create it like so: … setText =”button text”; txt.
What is inflate method in Android?
inflate(int resource, ViewGroup root) Inflate a new view hierarchy from the specified xml resource. View. inflate(XmlPullParser parser, ViewGroup root) Inflate a new view hierarchy from the specified xml node.
How do you inflate a view on Android?
Just think we specified a button in an XML layout file with its layout width and layout height set to match_parent. On This Buttons Click Event We Can Set Following Code to Inflate Layout on This Activity. LayoutInflater inflater = LayoutInflater. from(getContext()); inflater.
How do you inflate a fragment?
Android calls the onCreateView() callback method to display a Fragment . Override this method to inflate the layout for a Fragment , and return a View that is the root of the layout for the Fragment . The container parameter passed to onCreateView() is the parent ViewGroup from the Activity layout.
Why LayoutInflater is used in Android?
The LayoutInflater class is used to instantiate the contents of layout XML files into their corresponding View objects. In other words, it takes an XML file as input and builds the View objects from it.
What is attach to root in Android?
attaches the views to their parent (includes them in the parent hierarchy), so any touch event that the views recieve will also be transfered to parent view.
What does inflate mean?
transitive verb. 1 : to swell or distend with air or gas. 2 : to puff up : elate inflate one’s ego. 3 : to expand or increase abnormally or imprudently.
What is the use of ViewHolder in Android?
A ViewHolder describes an item view and metadata about its place within the RecyclerView. RecyclerView. Adapter implementations should subclass ViewHolder and add fields for caching potentially expensive View. findViewById(int) results.
What is a fragment in Android?
A fragment is an independent Android component which can be used by an activity. A fragment encapsulates functionality so that it is easier to reuse within activities and layouts. A fragment runs in the context of an activity, but has its own life cycle and typically its own user interface.
What is Android ViewGroup?
A ViewGroup is a special view that can contain other views (called children.) The view group is the base class for layouts and views containers. This class also defines the ViewGroup. Android contains the following commonly used ViewGroup subclasses: LinearLayout.
Is it possible activity without UI in Android?
The answer is yes it’s possible. Activities don’t have to have a UI. It’s mentioned in the documentation, e.g.: An activity is a single, focused thing that the user can do.
What is FragmentManager?
FragmentManager is the class responsible for performing actions on your app’s fragments, such as adding, removing, or replacing them, and adding them to the back stack.
How do I open an activity fragment?
Fragment newFragment = FragmentA. newInstance(objectofyourclassdata); FragmentTransaction transaction = getSupportFragmentManager(). beginTransaction(); // Replace whatever is in the fragment_container view with this fragment, // and add the transaction to the back stack transaction. replace(R.
What is the view in Android?
View is the basic building block of UI(User Interface) in android. View refers to the android. view. View class, which is the super class for all the GUI components like TextView , ImageView , Button etc. View class extends Object class and implements Drawable.
What is a context in Android?
What is Context in Android? … It is the context of the current state of the application. It can be used to get information regarding the activity and application. It can be used to get access to resources, databases, and shared preferences, and etc. Both the Activity and Application classes extend the Context class.