Fragment can’t be initiated without Activity or FragmentActivity. As soon as you create an instance of the Fragment class, it exists, but in order for it to appear on the UI, you must attach that fragment to an activity because a fragment’s lifecycle runs parallel to an activity’s lifecycle.
Can we use fragment instead of activity?
Fragment cannot be used without an Activity. While Using fragments in the project, the project structure will be good and we can handle it easily. Lifecycle methods are hosted by OS. The activity has its own life cycle.
Is a fragment an activity android?
A Fragment is not an Activity. Fragments are hosted inside a FragmentActivity. Check PJL’s answer for more information. In Android an Activity can contain several Fragments inside.
When should you use a fragment rather than an activity?
4 reasons to use Android Fragments
- Dealing with device form-factor differences. The Activity class is often thought of as the main UI class in Android. …
- Passing information between app screens. …
- User interface organization. …
- Advanced UI metaphors.
Which is better fragment or activity?
Activities are an ideal place to put global elements around your app’s user interface, such as a navigation drawer. Conversely, fragments are better suited to define and manage the UI of a single screen or portion of a screen. Consider an app that responds to various screen sizes.
What is a fragment in English?
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.
Why fragment is used in Android?
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 the relationship between fragment and activity?
Relationship Between an Activity and a Fragment
A fragment must always be hosted in an activity and a fragment’s lifecycle is directly affected by the host activity’s lifecycle. For example, when an activity resumes so will all of its fragments and when the activity pauses so will all of the fragments.