Events

You can take certain actions based on events and triggers.

Android

Get notified of events fired from ToolManager in Xamarin.Android

This tutorial only applies to Xamarin.Android. See Xamarin.iOS equivalent here .

The ToolManager exposes a number of events to allow a subscriber to be notified of events fired from the tools package. There are a number of methods that allow you to modify the behaviour of the tools themselves. The methods discussed here are simple notifications, so that the app may coordinate as necessary.

See all event APIs here: ToolManager events.

Scenario	Method to use to register your callback
Get notified on touch events	Example: LongPress, SingleTapConfirmed etc.
Get notified on annotation events	Example: InterceptAnnotationHandling
Get notified on annotation modification events	Example: AnnotationsAdded, AnnotationsModified, AnnotationsRemoved etc.
Get notified on quick menu events	Example: QuickMenuClicked
Get notified on tool changed event	ToolChanged

iOS

Get notified of events fired from ToolManager in Xamarin.iOS

This tutorial only applies to Xamarin.iOS. See Xamarin.Android equivalent here .

The ToolManager'sToolManagerDelegate exposes a number of delegate methods to allow a subscriber to be notified of events that are managed by the tools framework. There are a number of methods that allow you to modify the behaviour of the tools themselves. The methods discussed here are simple notifications, so that the app may coordinate as necessary.

1. -toolManagerToolChanged: This method is called when the tool changes, for example changing the "active" tool in a toolbar.
2. -toolManager:annotationAdded:onPageNumber: -toolManager:annotationModified:onPageNumber: -toolManager:annotationRemoved:onPageNumber: These methods are called just after an annotation is added, modified or deleted.