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DefaultLifecycleObserver
public
interface
DefaultLifecycleObserver
implements
LifecycleObserver
| android.arch.lifecycle.DefaultLifecycleObserver
|
Callback interface for listening to LifecycleOwner state changes.
If you use Java 8 language, always prefer it over annotations.
Summary
Public methods
onCreate
void onCreate (LifecycleOwner owner)
Notifies that ON_CREATE event occurred.
This method will be called after the LifecycleOwner's onCreate
method returns.
| Parameters |
|---|
owner |
LifecycleOwner: the component, whose state was changed
|
onDestroy
void onDestroy (LifecycleOwner owner)
Notifies that ON_DESTROY event occurred.
This method will be called before the LifecycleOwner's onStop method
is called.
| Parameters |
|---|
owner |
LifecycleOwner: the component, whose state was changed
|
onPause
void onPause (LifecycleOwner owner)
Notifies that ON_PAUSE event occurred.
This method will be called before the LifecycleOwner's onPause method
is called.
| Parameters |
|---|
owner |
LifecycleOwner: the component, whose state was changed
|
onResume
void onResume (LifecycleOwner owner)
Notifies that ON_RESUME event occurred.
This method will be called after the LifecycleOwner's onResume
method returns.
| Parameters |
|---|
owner |
LifecycleOwner: the component, whose state was changed
|
onStart
void onStart (LifecycleOwner owner)
Notifies that ON_START event occurred.
This method will be called after the LifecycleOwner's onStart method returns.
| Parameters |
|---|
owner |
LifecycleOwner: the component, whose state was changed
|
onStop
void onStop (LifecycleOwner owner)
Notifies that ON_STOP event occurred.
This method will be called before the LifecycleOwner's onStop method
is called.
| Parameters |
|---|
owner |
LifecycleOwner: the component, whose state was changed
|
Annotations
Interfaces
Classes
Enums
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Last updated 2025-02-10 UTC.
[null,null,["Last updated 2025-02-10 UTC."],[],[],null,["# DefaultLifecycleObserver\n========================\n\n| The `android.arch` Architecture Components packages are no longer maintained. They have been superseded by the corresponding [androidx.\\*](/jetpack/androidx/migrate) packages. See [androidx.lifecycle.DefaultLifecycleObserver](/reference/androidx/lifecycle/DefaultLifecycleObserver) instead.\n\n\n`\npublic\n\n\ninterface\nDefaultLifecycleObserver\n`\n\n\n`\n\n\nimplements\n\n`[LifecycleObserver](/reference/android/arch/lifecycle/LifecycleObserver)`\n\n\n`\n\n|-------------------------------------------------|\n| android.arch.lifecycle.DefaultLifecycleObserver |\n\n\u003cbr /\u003e\n\n*** ** * ** ***\n\nCallback interface for listening to [LifecycleOwner](/reference/android/arch/lifecycle/LifecycleOwner) state changes.\n\n\nIf you use Java 8 language, **always** prefer it over annotations.\n\nSummary\n-------\n\n| ### Public methods ||\n|-----------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| ` default void` | ` `[onCreate](/reference/android/arch/lifecycle/DefaultLifecycleObserver#onCreate(android.arch.lifecycle.LifecycleOwner))`(`[LifecycleOwner](/reference/android/arch/lifecycle/LifecycleOwner)` owner) ` Notifies that `ON_CREATE` event occurred. |\n| ` default void` | ` `[onDestroy](/reference/android/arch/lifecycle/DefaultLifecycleObserver#onDestroy(android.arch.lifecycle.LifecycleOwner))`(`[LifecycleOwner](/reference/android/arch/lifecycle/LifecycleOwner)` owner) ` Notifies that `ON_DESTROY` event occurred. |\n| ` default void` | ` `[onPause](/reference/android/arch/lifecycle/DefaultLifecycleObserver#onPause(android.arch.lifecycle.LifecycleOwner))`(`[LifecycleOwner](/reference/android/arch/lifecycle/LifecycleOwner)` owner) ` Notifies that `ON_PAUSE` event occurred. |\n| ` default void` | ` `[onResume](/reference/android/arch/lifecycle/DefaultLifecycleObserver#onResume(android.arch.lifecycle.LifecycleOwner))`(`[LifecycleOwner](/reference/android/arch/lifecycle/LifecycleOwner)` owner) ` Notifies that `ON_RESUME` event occurred. |\n| ` default void` | ` `[onStart](/reference/android/arch/lifecycle/DefaultLifecycleObserver#onStart(android.arch.lifecycle.LifecycleOwner))`(`[LifecycleOwner](/reference/android/arch/lifecycle/LifecycleOwner)` owner) ` Notifies that `ON_START` event occurred. |\n| ` default void` | ` `[onStop](/reference/android/arch/lifecycle/DefaultLifecycleObserver#onStop(android.arch.lifecycle.LifecycleOwner))`(`[LifecycleOwner](/reference/android/arch/lifecycle/LifecycleOwner)` owner) ` Notifies that `ON_STOP` event occurred. |\n\nPublic methods\n--------------\n\n### onCreate\n\n```\nvoid onCreate (LifecycleOwner owner)\n```\n\nNotifies that `ON_CREATE` event occurred.\n\n\nThis method will be called after the [LifecycleOwner](/reference/android/arch/lifecycle/LifecycleOwner)'s `onCreate`\nmethod returns.\n\n\u003cbr /\u003e\n\n| Parameters ||\n|---------|-----------------------------------------------------------------|\n| `owner` | `LifecycleOwner`: the component, whose state was changed \u003cbr /\u003e |\n\n### onDestroy\n\n```\nvoid onDestroy (LifecycleOwner owner)\n```\n\nNotifies that `ON_DESTROY` event occurred.\n\n\nThis method will be called before the [LifecycleOwner](/reference/android/arch/lifecycle/LifecycleOwner)'s `onStop` method\nis called.\n\n\u003cbr /\u003e\n\n| Parameters ||\n|---------|-----------------------------------------------------------------|\n| `owner` | `LifecycleOwner`: the component, whose state was changed \u003cbr /\u003e |\n\n### onPause\n\n```\nvoid onPause (LifecycleOwner owner)\n```\n\nNotifies that `ON_PAUSE` event occurred.\n\n\nThis method will be called before the [LifecycleOwner](/reference/android/arch/lifecycle/LifecycleOwner)'s `onPause` method\nis called.\n\n\u003cbr /\u003e\n\n| Parameters ||\n|---------|-----------------------------------------------------------------|\n| `owner` | `LifecycleOwner`: the component, whose state was changed \u003cbr /\u003e |\n\n### onResume\n\n```\nvoid onResume (LifecycleOwner owner)\n```\n\nNotifies that `ON_RESUME` event occurred.\n\n\nThis method will be called after the [LifecycleOwner](/reference/android/arch/lifecycle/LifecycleOwner)'s `onResume`\nmethod returns.\n\n\u003cbr /\u003e\n\n| Parameters ||\n|---------|-----------------------------------------------------------------|\n| `owner` | `LifecycleOwner`: the component, whose state was changed \u003cbr /\u003e |\n\n### onStart\n\n```\nvoid onStart (LifecycleOwner owner)\n```\n\nNotifies that `ON_START` event occurred.\n\n\nThis method will be called after the [LifecycleOwner](/reference/android/arch/lifecycle/LifecycleOwner)'s `onStart` method returns.\n\n\u003cbr /\u003e\n\n| Parameters ||\n|---------|-----------------------------------------------------------------|\n| `owner` | `LifecycleOwner`: the component, whose state was changed \u003cbr /\u003e |\n\n### onStop\n\n```\nvoid onStop (LifecycleOwner owner)\n```\n\nNotifies that `ON_STOP` event occurred.\n\n\nThis method will be called before the [LifecycleOwner](/reference/android/arch/lifecycle/LifecycleOwner)'s `onStop` method\nis called.\n\n\u003cbr /\u003e\n\n| Parameters ||\n|---------|-----------------------------------------------------------------|\n| `owner` | `LifecycleOwner`: the component, whose state was changed \u003cbr /\u003e |\n\n-\n\n Annotations\n -----------\n\n - [OnLifecycleEvent](/reference/android/arch/lifecycle/OnLifecycleEvent)\n-\n\n Interfaces\n ----------\n\n - [DefaultLifecycleObserver](/reference/android/arch/lifecycle/DefaultLifecycleObserver)\n - [LifecycleObserver](/reference/android/arch/lifecycle/LifecycleObserver)\n - [LifecycleOwner](/reference/android/arch/lifecycle/LifecycleOwner)\n - [LifecycleRegistryOwner](/reference/android/arch/lifecycle/LifecycleRegistryOwner)\n - [Observer](/reference/android/arch/lifecycle/Observer)\n - [ViewModelProvider.Factory](/reference/android/arch/lifecycle/ViewModelProvider.Factory)\n - [ViewModelStoreOwner](/reference/android/arch/lifecycle/ViewModelStoreOwner)\n-\n\n Classes\n -------\n\n - [AndroidViewModel](/reference/android/arch/lifecycle/AndroidViewModel)\n - [Lifecycle](/reference/android/arch/lifecycle/Lifecycle)\n - [LifecycleRegistry](/reference/android/arch/lifecycle/LifecycleRegistry)\n - [LifecycleService](/reference/android/arch/lifecycle/LifecycleService)\n - [LiveData](/reference/android/arch/lifecycle/LiveData)\n - [LiveDataReactiveStreams](/reference/android/arch/lifecycle/LiveDataReactiveStreams)\n - [MediatorLiveData](/reference/android/arch/lifecycle/MediatorLiveData)\n - [MutableLiveData](/reference/android/arch/lifecycle/MutableLiveData)\n - [ProcessLifecycleOwner](/reference/android/arch/lifecycle/ProcessLifecycleOwner)\n - [ServiceLifecycleDispatcher](/reference/android/arch/lifecycle/ServiceLifecycleDispatcher)\n - [Transformations](/reference/android/arch/lifecycle/Transformations)\n - [ViewModel](/reference/android/arch/lifecycle/ViewModel)\n - [ViewModelProvider](/reference/android/arch/lifecycle/ViewModelProvider)\n - [ViewModelProvider.AndroidViewModelFactory](/reference/android/arch/lifecycle/ViewModelProvider.AndroidViewModelFactory)\n - [ViewModelProvider.NewInstanceFactory](/reference/android/arch/lifecycle/ViewModelProvider.NewInstanceFactory)\n - [ViewModelProviders](/reference/android/arch/lifecycle/ViewModelProviders)\n - [ViewModelProviders.DefaultFactory](/reference/android/arch/lifecycle/ViewModelProviders.DefaultFactory)\n - [ViewModelStore](/reference/android/arch/lifecycle/ViewModelStore)\n - [ViewModelStores](/reference/android/arch/lifecycle/ViewModelStores)\n-\n\n Enums\n -----\n\n - [Lifecycle.Event](/reference/android/arch/lifecycle/Lifecycle.Event)\n - [Lifecycle.State](/reference/android/arch/lifecycle/Lifecycle.State)"]]
