What is a fragment Android?
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.
What is retained fragment in Android?
A Fragment represents a reusable portion of your app’s User Interface. Retained Fragment consists of the configuration change that causes the underlying Activity to be destroyed. The term “retained” refers to the fragment that will not be destroyed on configuration changes.
How do I pass a value from one fragment to another in Android?
Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project. Step 2 − Add the following code to res/layout/activity_main. xml.
How many types of fragments are there in Android?
In Activity 1, there are two fragments, Fragment A and Fragment B. When we select an item from Fragment A, it gets open in Fragment B of the same activity. In the case of mobiles, there are two activities that are: Activity 1 with Fragment A and Activity 2 with Fragment B.
What is onAttach in fragment?
onAttach(Activity) called once the fragment is associated with its activity. onCreate(Bundle) called to do initial creation of the fragment. onCreateView(LayoutInflater, ViewGroup, Bundle) creates and returns the view hierarchy associated with the fragment.
How can we send data from one fragment?
Step 1 − Create a new project in Android Studio, go to File ⇉ New Project and fill all required details to create a new project. Step 2 − Add the following code to res/layout/activity_main. xml. Step 3 − Create two FragmentActivity and add the codes which are given below.
What is AppCompat activity in Android?
↳ androidx.appcompat.app.AppCompatActivity. Base class for activities that wish to use some of the newer platform features on older Android devices. Some of these backported features include: Using the action bar, including action items, navigation modes and more with the setSupportActionBar(Toolbar) API.
What is AppCompat library?
When new versions of android are published, Google will have to support the older versions of android. So AppCompat is a set of support libraries which can be used to make the apps developed with newer versions work with older versions.
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.