Fragment life cycle is
closely related to the life cycle of its host activity
which means when the activity is paused, all the fragments available in the activity will also be stopped. … A fragment can implement a behaviour that has no user interface component.
What is the lifecycle of a fragment?
Each Fragment instance has
its own lifecycle
. When a user navigates and interacts with your app, your fragments transition through various states in their lifecycle as they are added, removed, and enter or exit the screen.
Why is fragment having its own life cycle like activity?
And it has its own set of lifecycle events/methods which are called and since
the fragment is inflated into the activty when the state of your activity changes it effects the fragment
and correspondingly different lifecycle methods of the fragments are called.
What is a fragment and why is it used?
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 onCreateView?
onCreateView is called
to inflate the layout of the fragment i.e graphical initialization usually takes place
here. It is always called sometimes after the onCreate method.
What is difference between fragment and activity?
Activity is an application component that gives a user interface where the user can interact. The fragment is only part of an activity, it basically contributes its UI to that activity. Fragment is dependent on activity. … After using multiple fragments in a single activity, we can create a multi-screen UI.
How do you destroy a fragment?
To remove a fragment from the host,
call remove()
, passing in a fragment instance that was retrieved from the fragment manager through findFragmentById() or findFragmentByTag() . If the fragment’s view was previously added to a container, the view is removed from the container at this point.
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.
Which method is called only once in fragment lifecycle?
Interview Answer.
OnAttach() method
is going to be called only once.
Can you explain me how the lifecycle of a fragment works?
A fragment can be used in multiple activities
. Fragment life cycle is closely related to the life cycle of its host activity which means when the activity is paused, all the fragments available in the activity will also be stopped. A fragment can implement a behaviour that has no user interface component.
What is a fragment and examples?
A fragment is a group of words that does not express a complete thought. It is not a complete sentence, but it could be a phrase. Examples of Fragment:
the boy on the porch
.
to the left of the red car
.
What is the purpose of fragments?
A Fragment represents a reusable portion of your app’s UI. A fragment
defines and manages its own layout, has its own lifecycle
, and can handle its own input events. Fragments cannot live on their own–they must be hosted by an activity or another fragment.
Whats is a fragment?
Fragments are incomplete sentences. Usually, fragments are
pieces of sentences that have become disconnected from the main clause
. One of the easiest ways to correct them is to remove the period between the fragment and the main clause. Other kinds of punctuation may be needed for the newly combined sentence.
Is onCreateView called before onCreate?
As the name states, this is called
after the Activity ‘s onCreate()
has completed. It is called after onCreateView() , and is mainly used for final initialisations (for example, modifying UI elements).
What is SetContentView?
SetContentView is
used to fill the window with the UI provided from
layout file incase of setContentView(R. layout. somae_file). Here layoutfile is inflated to view and added to the Activity context(Window).
How do you use Getupportfragmentmanager?
- Fragment fragment;fragment.getActivity()
- Robolectric.buildActivity(FragmentActivity.class).create().get()
