# AppLifecycleObserverService

Roblox Engine API class from Roblox Studio 0.744.0.7441077 (version-7aaa6838d36c4448).

- Inherits from, nearest first: [Instance](https://rapi.sleaze.dev/classes/Instance.md), [Object](https://rapi.sleaze.dev/classes/Object.md)
- Tags: Not creatable, Not replicated, Service
- Memory category: Instances
- HTML page: https://rapi.sleaze.dev/classes/AppLifecycleObserverService/
- Roblox documentation: https://create.roblox.com/docs/reference/engine/classes/AppLifecycleObserverService

## Methods

### GetCurrentState

```luau
AppLifecycleObserverService:GetCurrentState(): Enum.AppLifecycleManagerState
```

- Tags: Roblox script security

### IsDidDetachSupported

```luau
AppLifecycleObserverService:IsDidDetachSupported(): boolean
```

- Tags: Roblox script security

### TriggerOnLandingPageMount

```luau
AppLifecycleObserverService:TriggerOnLandingPageMount()
```

- Tags: Roblox script security

### TriggerOnLuaAppInteractive

```luau
AppLifecycleObserverService:TriggerOnLuaAppInteractive()
```

- Tags: Roblox script security

### TriggerOnLuaAppReadyToRender

```luau
AppLifecycleObserverService:TriggerOnLuaAppReadyToRender()
```

- Tags: Roblox script security

### TriggerOnPageMilestone

```luau
AppLifecycleObserverService:TriggerOnPageMilestone(page: Enum.PageType, milestone: Enum.PageMilestoneType)
```

- Tags: Roblox script security

## Events

### OnBecomeActive

```luau
AppLifecycleObserverService.OnBecomeActive: RBXScriptSignal<()>
```

- Tags: Roblox script security

### OnDetach

```luau
AppLifecycleObserverService.OnDetach: RBXScriptSignal<()>
```

- Tags: Roblox script security

### OnHide

```luau
AppLifecycleObserverService.OnHide: RBXScriptSignal<()>
```

- Tags: Roblox script security

### OnResignActive

```luau
AppLifecycleObserverService.OnResignActive: RBXScriptSignal<()>
```

- Tags: Roblox script security

### OnStart

```luau
AppLifecycleObserverService.OnStart: RBXScriptSignal<()>
```

- Tags: Roblox script security

### OnUnhide

```luau
AppLifecycleObserverService.OnUnhide: RBXScriptSignal<()>
```

- Tags: Roblox script security

## Inherited members

- From [Instance](https://rapi.sleaze.dev/classes/Instance.md): `Archivable`, `archivable`, `Attributes`, `AttributesReplicate`, `AttributesSerialize`, `HistoryId`, `Name`, `Parent`, `PredictionMode`, `PropertyStatusStudio`, `RobloxLocked`, `SerializedOverrides`, `SourceAssetId`, `Tags`, `UniqueId`, `numExpectedDirectChildren`, `DataCost`, `Capabilities`, `DefinesCapabilities`, `IsInSandbox`, `Sandboxed`, `AddTag`, `ClearAllChildren`, `Clone`, `Destroy`, `FindFirstAncestor`, `FindFirstAncestorOfClass`, `FindFirstAncestorWhichIsA`, `FindFirstChild`, `FindFirstChildOfClass`, `FindFirstChildWhichIsA`, `FindFirstDescendant`, `GetActor`, `GetAttribute`, `GetAttributeChangedSignal`, `GetAttributes`, `GetChildren`, `GetDebugId`, `GetDescendants`, `GetFullName`, `GetStyled`, `GetStyledPropertyChangedSignal`, `GetTags`, `HasTag`, `IsAncestorOf`, `IsDescendantOf`, `IsPropertyModified`, `QueryDescendants`, `RemoveTag`, `ResetPropertyToDefault`, `SetAttribute`, `WaitForChild`, `Remove`, `children`, `clone`, `destroy`, `findFirstChild`, `getChildren`, `isDescendantOf`, `remove`, `AncestryChanged`, `AttributeChanged`, `ChildAdded`, `ChildRemoved`, `DescendantAdded`, `DescendantRemoving`, `Destroying`, `StyledPropertiesChanged`, `childAdded`
- From [Object](https://rapi.sleaze.dev/classes/Object.md): `ClassName`, `className`, `GetPropertyChangedSignal`, `IsA`, `isA`, `Changed`