AvailabilityBaseAttribute Class

Definition

Namespace:

ObjCRuntime

Assembly:

Xamarin.iOS.dll

Describes the availability of a member or type.

[System.AttributeUsage(System.AttributeTargets.Class | System.AttributeTargets.Struct | System.AttributeTargets.Enum | System.AttributeTargets.Constructor | System.AttributeTargets.Method | System.AttributeTargets.Property | System.AttributeTargets.Field | System.AttributeTargets.Event | System.AttributeTargets.Interface | System.AttributeTargets.Delegate, AllowMultiple=true)]
public abstract class AvailabilityBaseAttribute : Attribute

type AvailabilityBaseAttribute = class
    inherit Attribute

Inheritance

Attribute

AvailabilityBaseAttribute

Derived

ObjCRuntime.DeprecatedAttribute

ObjCRuntime.IntroducedAttribute

ObjCRuntime.ObsoletedAttribute

ObjCRuntime.UnavailableAttribute

Attributes

AttributeUsageAttribute

Remarks

This attribute is used to annotate when a type or member of a type was introduced, deprecated, obsolete or is unavailable. This is done on a per-platform basis (one attribute per platform, which can be either iOS, tvOS, watchOS or macOS).

The information is only accurate for active versions of the operating systems, the information is removed as soon as operating systems are deprecated or no longer supported by Apple.

It is the managed equivalent of Clang's availability __attribute__, which is the underlying mechanism that Apple uses to perform these annotations.

Properties

Architecture	The architectures the attribute applies to (either only 32-bit, only 64-bit or both 32-bit and 64-bit architectures).
AvailabilityKind	The type of availability information this attribute contains.
Message	Additional information related to the availability information.
Platform	The platform this availability attribute applies to.
Version	The version when the API was introduced, deprecated, obsoleted or became unavailable.

Methods

ToString()

Returns a human readable version of the availability attribute.