What is child fragment manager?
What is child fragment manager?
The child FragmentManager is the one that handles Fragments contained within only the Fragment that it was added to. The other FragmentManager is contained within the entire Activity .
What does addToBackStack null do?
Use . addToBackStack(“fragName”) : if you want later popToBackStack(String name, int flags) to pop more than one back stack. Use . addToBackStack(null) : If you don’t want later pop more than one back stack, but still want to pop one at a time.
What is fragment back stack in Android?
If you add one Fragment into the back stack, when you press the android device back menu, you can find the Fragment that is saved in the back stack popup. Until all the saved Fragments in the back stack popup, then the activity will exit.
What is findFragmentByTag?
findFragmentByTag(String tag) Finds a fragment that was identified by the given tag either when inflated from XML or as supplied when added in a transaction. abstract FragmentManager.BackStackEntry.
What is the use of getSupportFragmentManager?
getSupportFragmentManager and getChildFragmentManager FragmentManager is class provided by the framework which is used to create transactions for adding, removing or replacing fragments. getSupportFragmentManager is associated with Activity consider it as a FragmentManager for your Activity .
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 in Android?
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.
What is popUpTo navigation?
app:popUpTo=”@+id/a” app:popUpToInclusive=”true”/> After reaching destination C, the back stack contains one instance of each destination (A, B, C). When navigating back to destination A, we also popUpTo A, which means that we remove B and C from the stack while navigating.
What is fragment in Android?
Fragment Tutorial With Example In Android Studio In Android, Fragment is a part of an activity which enable more modular activity design. It will not be wrong if we say a fragment is a kind of sub-activity. It represents a behaviour or a portion of user interface in an Activity.
How to replace a fragment with framelayout in Android?
For replacing a Fragment with FrameLayout firstly we create a Fragment Manager and then begin the transaction using Fragment Transaction and finally replace the Fragment with the layout i.e FrameLayout. Step 4: Now we need 2 fragments and 2 xml layouts.
How to reverse a fragment transaction in Android?
While performing Fragment Transaction we can add a Fragment into back stack that’s managed by the Activity. back stack allow us to reverse a Fragment transaction on pressing Back button of device. For Example if we replace a Fragment and add it in back stack then on pressing the Back button on device it display the previous Fragment. 1.
Can I use a fragment apart from an activity?
A Fragment is closely tied to the Activity it is in, and can not be used apart from one. Though Fragment defines its own lifecycle, that lifecycle is dependent on its activity: if the activity is stopped, no fragments inside of it can be started; when the activity is destroyed, all fragments will be destroyed.
