What is commitAllowingStateLoss?

What is commitAllowingStateLoss?

commitAllowingStateLoss(): A transaction can only be committed with this method prior to its containing activity saving its state. If the commit is attempted after that point, an exception will be thrown. This is because the state after the commit can be lost if the activity needs to be restored from its state.

Can you use a fragment with no UI?

However, a fragment is not required to be a part of the activity layout; you may also use a fragment without its own UI as an invisible worker for the activity.

Can not perform this action after onSaveInstanceState in fragment?

Short And working Solution : Step 1 : Override onSaveInstanceState state in respective fragment. And remove super method from it. Step 2 : Use fragmentTransaction. commitAllowingStateLoss( );

Can we use fragment without activity?

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.

What is the difference between commit and commitNow methods?

If you need synchronicity and you are not adding your transaction to the back stack, use commitNow(). If you are performing multiple transactions, don’t need synchronicity, or are adding transactions to the back stack, you should stick with commit().

What is difference between ADD and replace fragments Android?

One more important difference between add and replace is this: replace removes the existing fragment and adds a new fragment. This means when you press back button the fragment that got replaced will be created with its onCreateView being invoked.

What is a FragmentActivity?

A FragmentActivity is a subclass of Activity that was built for the Android Support Package. The FragmentActivity class adds a couple new methods to ensure compatibility with older versions of Android, but other than that, there really isn’t much of a difference between the two.

Why do we use headless fragments?

Fragments can be used without defining a user interface. It is recommended to use headless fragments for your background processing.

What is popBackStackImmediate?

popBackStackImmediate() will perform the popping commands immediately in the call. The results of which can be verified immediately after the call. It is somewhat slower since all the popping actions are performed within the call.

Which method of fragment is called after onCreateView method?

Fragment Lifecycle onCreateView() is called by Android once the Fragment should inflate a view. onViewCreated() is called after onCreateView() and ensures that the fragment’s root view is non-null .

Is Fragment life cycle dependent on activity life cycle?

A fragment can be reuse in multiple activities. A fragment life cycle is closely related to the lifecycle of its host activity which means when the activity is in the pause state, all the fragments available in the activity will also stop.

What is FragmentContainerView?

FragmentContainerView is a customized Layout designed specifically for Fragments. It extends FrameLayout , so it can reliably handle Fragment Transactions, and it also has additional features to coordinate with fragment behavior.