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# TVApplicationControllerDelegate

A protocol used to observe and manage the different states of an application controller.

```
protocol TVApplicationControllerDelegate : NSObjectProtocol
```

## Topics

### Managing the App Controller

[`appController(_:didFail:)`](/documentation/TVMLKit/TVApplicationControllerDelegate/appController(_:didFail:))

Tell the delegate the app controller failed due to an error.

[`appController(_:didFinishLaunching:)`](/documentation/TVMLKit/TVApplicationControllerDelegate/appController(_:didFinishLaunching:))

Tells the delegate the app controller has finished launching.

[`appController(_:didStop:)`](/documentation/TVMLKit/TVApplicationControllerDelegate/appController(_:didStop:))

Tells the delegate the app has stopped for any reason.

[`appController(_:evaluateAppJavaScriptIn:)`](/documentation/TVMLKit/TVApplicationControllerDelegate/appController(_:evaluateAppJavaScriptIn:))

Tells the delegate to add JavaScript classes and objects.

[`player(for:)`](/documentation/TVMLKit/TVApplicationControllerDelegate/player(for:))

Asks the delegate for a custom player object for a particular player bridge.


---

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