TTMapViewCameraDelegate Protocol Reference


                    
                    
                    -mapView:onCameraChanged:withState:

A callback interface called when the map viewport moves. It is executed each time the user interacts with the map (e.g., the map is panned or zoomed).

Declaration

Objective-C

- (void)mapView:(TTMapView *_Nonnull)mapView
    onCameraChanged:(TTCameraPosition *_Nonnull)cameraPosition
          withState:(TTMapCameraChangeState)state;

Swift

optional func mapView(_ mapView: TTMapView, onCameraChanged cameraPosition: TTCameraPosition, with state: TTMapCameraChangeState)

Parameters

`mapView`	mapView The map view instance.
`cameraPosition`	cameraPosition The TTCameraPostion object that is present and current.


                    
                    
                    -mapView:onCameraChanged:

A callback interface called when the map viewport moves. It is executed each time the user interacts with the map (e.g., the map is panned or zoomed).

Declaration

Objective-C

- (void)mapView:(TTMapView *_Nonnull)mapView
    onCameraChanged:(TTCameraPosition *_Nonnull)cameraPosition;

Swift

optional func mapView(_ mapView: TTMapView, onCameraChanged cameraPosition: TTCameraPosition)

Parameters

`mapView`	mapView The map view instance.
`cameraPosition`	cameraPosition The TTCameraPostion object that is present and current.


                    
                    
                    -mapView:onCenterStatusChanged:

A callback interface called when the map finishes centering. Every user interaction on the map cancels centering on the map.

Declaration

Objective-C

- (void)mapView:(TTMapView *_Nonnull)mapView
    onCenterStatusChanged:(TTMapCenteredState)centeredState;

Swift

optional func mapView(_ mapView: TTMapView, onCenterStatusChanged centeredState: TTMapCenteredState)

Parameters

`mapView`	mapView The map view instance.
`centeredState`	centeredState The TTMapCenteredState object’s present status when map centering.


                    
                    
                    -mapView:didChangCameraPosition:

This method is deprecated. Use callbacks onCameraChanged instead.

Declaration

Objective-C

- (void)mapView:(TTMapView *_Nonnull)mapView
    didChangCameraPosition:(TTCameraPosition *_Nonnull)cameraPosition;

Swift

optional func mapView(_ mapView: TTMapView, didChangCameraPosition cameraPosition: TTCameraPosition)

Parameters

`mapView`	mapView The map view instance.
`cameraPosition`	cameraPosition The TTCameraPostion object present during the current state of the camera.


                    
                    
                    -mapView:isChangingCameraPosition:

This method is deprecated. Use callbacks onCameraChanged instead.

Declaration

Objective-C

- (void)mapView:(TTMapView *_Nonnull)mapView
    isChangingCameraPosition:(TTCameraPosition *_Nonnull)cameraPosition;

Swift

optional func mapView(_ mapView: TTMapView, isChanging cameraPosition: TTCameraPosition)

Parameters

`mapView`	mapView The map view instance.
`cameraPosition`	cameraPosition TTCameraPostion object present current state of camera.


                    
                    
                    -mapView:willChangeCameraPosition:

This method is deprecated. Use callbacks onCameraChanged instead.

Declaration

Objective-C

- (void)mapView:(TTMapView *_Nonnull)mapView
    willChangeCameraPosition:(TTCameraPosition *_Nonnull)cameraPosition;

Swift

optional func mapView(_ mapView: TTMapView, willChange cameraPosition: TTCameraPosition)

Parameters

`mapView`	mapView The map view instance.
`cameraPosition`	cameraPosition TTCameraPostion object present current state of camera.