protocol-dcecamerastatelistener-v2.3.20.md

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DCECameraStateListener

The interface to handle callback when camera state changes.

@protocol DCECameraStateListener <NSObject>

Method	Type	Description
stateChangeCallback	required	The callback method is triggered when camera state changes.

stateChangeCallback

The callback method is triggered when camera state changes.

- (void)stateChangeCallback:(EnumCameraState)cameraState;

Parameters

cameraState: The camera state. It includes opened, opening, closed and closing.

Code Snippet

>- Objective-C >- Swift > >1. ```objc @interface ViewController () - (void)configurationDCE{ [_dce setCameraStateListener:self]; } - (void)stateChangeCallback:(EnumCameraState)state{ // Add your code to do when camera state changes. } ``` 2. ```swift class ViewController: UIViewController,DCECameraStateListener{ func configurationDCE(){ dce.setCameraStateListener(self) } func stateChangeCallback(EnumCameraState currentState){ // Add your code to do when camera state changes. } } ```