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# UIApplication.State

Constants that indicate the running states of an app.

```
enum State
```

## Topics

### Constants

[`UIApplication.State.active`](/documentation/UIKit/UIApplication/State/active)

The app is running in the foreground and currently receiving events.

[`UIApplication.State.inactive`](/documentation/UIKit/UIApplication/State/inactive)

The app is running in the foreground but isn’t receiving events.

[`UIApplication.State.background`](/documentation/UIKit/UIApplication/State/background)

The app is running in the background.


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