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Is it possible to have an event when the FragmentTransaction is completed ?
FragmentTransaction ft = getSupportFragmentManager().beginTransaction(); ft.replace(R.id.content_frame, fragment).commit(); In fact, I use a Drawer for my application and I would like to trigger invalidateOptionsMenu(); when the transaction is completed to change the menu of my action bar.
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Since all fragments are destroyed if the activity is destroyed, a simple answer could be calling getActivity(). isDestroyed() returning true if the activity is destroyed, therefore the fragment is destroyed.
Step 1: Create a New Project To create a new project in Android Studio please refer to How to Create/Start a New Project in Android Studio. Step 2: Right-click on the First button inside java, then click on New. Step 2: Then Go to Fragment. Step 3: (The next step is to choose the Fragment type.
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.
Fragments — Scenario 3: Activity with retained Fragment is rotated. The fragment is not destroyed nor created after the rotation because the same fragment instance is used after the activity is recreated. The state bundle is still available in onActivityCreated .
You don't need to wait for the fragment transaction to complete, You can call
getSupportFragmentManager().executePendingTransactions(); after your commit() function call.
This will ensure that the transaction is complete.
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