android studio fragment manager remove fragment

Of course, it isn’t quite that straightforward. As the activity moves to CREATED, STARTED, and RESUMED, FragmentManager dispatches those changes down to its fragments. In the vast majority of cases for fragments, this is a FragmentActivity (there is an entire layer of FragmentController and FragmentHostCallback for building your own custom host, but let’s avoid that discussion here). FragmentManager’s moveToState()Įach FragmentManager is associated with a host.

They’re now better than ever, we were able to close out 10+ long standing related issues, and the internal restructuring has cleared the way to build support for multiple back stacks in a single FragmentManager and simplify the Fragment lifecycle. We’ve taken a ground up look at how those systems previously work, found them wanting, and rewrote them from scratch. Moving Fragments through their lifecycle methods.This new state manager is responsible for some pretty key parts of Fragments: TL/DR: please pay extra attention to regression testing with Fragment 1.3.0-alpha08 and file issues as soon as possible if you discover any regressions. Note: I’m going to be talking a lot about the internals of FragmentManager in this post. This release swaps out much of the logic that used to live directly in FragmentManager with smaller, testable, and maintainable (internal) classes, the core of which is FragmentStateManager. With Fragment 1.3.0-alpha08, some of the most significant restructuring of the internals of FragmentManager have been completed. While Architecture Components have taken over many of the roles that traditionally needed a Fragment (such as using a LifecycleObserver for Lifecycle callbacks or a ViewModel for retained state), if you’re using Fragments, you’re adding, removing, and interacting with them through a FragmentManager. Besides being fully deprecated in Android 10, they weren’t receiving fixes for a considerable amount of time before that and, being baked into the framework, no backporting of fixes or consistency across devices and API levels can be expected. Note: you should under no circumstances use the Android framework version of Fragments. They started as part of the Android platform itself, became a mirrored existence in the Android platform and as part of the Android Support Library, and now exist solely as part of Jetpack as AndroidX Fragments. Fragments, more than most Android APIs, have evolved very organically over the years.

Android studio fragment manager remove fragment