UIActivity Class
Definition
Important
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Abstract base class of activities to which the UIActivityViewController can send data.
[Foundation.Register("UIActivity", true)]
public class UIActivity : Foundation.NSObject[<Foundation.Register("UIActivity", true)>]
type UIActivity = class
inherit NSObject- Inheritance
- Attributes
Remarks
The UIActivityViewController can be used to send data to services such as social networks, email, SMS, etc. The operating system provides a number of these, such as PostToFacebook, Mail, and Message.
You can create a new service by subclassing UIActivity and, optionally, UIActivityItemProvider. This service will only be available to your own application; there is no way to make for non-Apple developers to make a UIActivity that is available across apps.
When subclassing, you should override the Image, Title, Type, Prepare(NSObject[]) and CanPerform(NSObject[]).
//
// Share an image
//
var imageToShare = UIImage.FromFile ("demo.png");
var activityItems = new NSObject[] { imageToShare };
var controller = new UIActivityViewController (activityItems, null);
this.PresentViewController(controller, true, null)
//
// Now share the image, but explicitly exclude posting as a message
//
controller = new UIActivityViewController (activityItems, null) {
ExcludedActivityTypes = new NSString[] {
UIActivityType.PostToWeibo,
UIActivityType.Message
}
};
this.PresentViewController(controller, true, null)
Constructors
| Name | Description |
|---|---|
| UIActivity() |
Creates a new UIActivity with default values. |
| UIActivity(NativeHandle) |
A constructor used when creating managed representations of unmanaged objects. Called by the runtime. |
| UIActivity(NSObjectFlag) |
Constructor to call on derived classes to skip initialization and merely allocate the object. |
Properties
| Name | Description |
|---|---|
| AccessibilityAttributedUserInputLabels | (Inherited from NSObject) |
| AccessibilityRespondsToUserInteraction | (Inherited from NSObject) |
| AccessibilityTextualContext | (Inherited from NSObject) |
| AccessibilityUserInputLabels | (Inherited from NSObject) |
| Category | |
| Class | (Inherited from NSObject) |
| ClassHandle |
The Objective-C class handle for this class. |
| DebugDescription | (Inherited from NSObject) |
| Description | (Inherited from NSObject) |
| Handle |
Handle (pointer) to the unmanaged object representation. (Inherited from NSObject) |
| Image | |
| IsDirectBinding | (Inherited from NSObject) |
| IsProxy | (Inherited from NSObject) |
| RetainCount | (Inherited from NSObject) |
| Self | (Inherited from NSObject) |
| Superclass | (Inherited from NSObject) |
| SuperHandle |
Handle used to represent the methods in the base class for this NSObject. (Inherited from NSObject) |
| Title | |
| Type | |
| ViewController | |
| Zone | (Inherited from NSObject) |