ObjCRuntime Namespace

The ObjCRuntime namespace provides classes for binding Objective-C types with the Mono managed runtime.

Classes

AdoptsAttribute	An attribute used to specify that a class adopts a specific Objective-C protocol.
AvailabilityAttribute	Describes the availability of a member or type in iOS or macOS.
AvailabilityBaseAttribute	Describes the availability of a member or type.
BaseWrapper	Base class used by the bindinge generator to generate Protocol Wrapper Types.
BindAsAttribute	The BindAsAttribute allows binding native NSNumber, NSValue and NSString (for enums) types into more accurate managed types.
BindingImplAttribute	This attribute provides information about binding code.
BlockProxyAttribute	This attribute is used to notify the runtime which class is used to wrap Objective-C blocks into managed delegates.
CategoryAttribute	Attribute used to flag a class as a category that extends the API of another type.
Class	Managed representation for an Objective-C class.
Constants	Global constants to system libraries.
DelegateProxyAttribute	This attribute is used to notify the runtime which class is used to wrap managed delegates into Objective-C blocks.
DeprecatedAttribute	Attribute indicating when an API was deprecated on a specific platform.
DesignatedInitializerAttribute	This attribute is used to mark managed constructors that bind Objective-C initializers marked with the NS_DESIGNATED_INITIALIZER attribute.
Dlfcn	Provides access to the dynamic linker
IntroducedAttribute	Attribute indicating when an API was first introduced on a specific platform.
iOSAttribute	Attribute indicating when an API was first introduced in iOS.
LinkWithAttribute	A LinkWith attribute specifies how the native library associated with the assembly should be linked to the resulting application.
MacAttribute	Attribute indicating when an API was first introduced on macOS.
MarshalManagedExceptionEventArgs
MarshalObjectiveCExceptionEventArgs
MonoNativeFunctionWrapperAttribute	Attribute to apply to delegates to flag them as targets that can be used with GetDelegateForFunctionPointer(IntPtr, Type).
MonoPInvokeCallbackAttribute	Attribute used to annotate functions that will be called back from the unmanaged world.
NativeAttribute	This attributes tells the Xamarin.iOS runtime that the native enum this managed enum binds is using a native size for the platform as the size for each enum value (i.e. a 32-bit value on 32-bit architectures, and a 64-bit value on 64-bit architectures).
NoiOSAttribute	Attribute indicating that an API is not available on iOS.
NoMacAttribute	Attribute indicating that an API is not available on macOS.
NoTVAttribute	Attribute indicating that an API is not available on tvOS.
NoWatchAttribute	Attribute indicating that an API is not available on watchOS.
ObsoletedAttribute	Attribute indicating when an API was obsoleted on a specific platform.
PlatformHelper	Utilities for working with the Platform enumeration.
Protocol	Representation of an Objective-C protocol.
ReleaseAttribute	This attribute indicates that the return value of a function is retained (the caller obtains a reference to the object returned).
RequiresSuperAttribute	This attribute is applied to methods that must call their base implementation when they're overridden.
Runtime	Provides information about the Xamarin.iOS Runtime.
RuntimeException	Class that represents an exception that occurs in the Xamarin runtime.
Selector	Represents an Objective-C selector in managed code.
ThreadSafeAttribute	A T:System.Attribute that indicates that a UIKit (for iOS) or AppKit (for macOS) method or class is thread-safe.
TransientAttribute	Flags a paramter in an NSObject subclass as being transient.
TVAttribute	Attribute indicating when an API was first introduced in tvOS.
TypeConverter	Converts Obj-C type encodings to managed types.
UnavailableAttribute	Attribute indicating when an API was removed from a specific platform.
UserDelegateTypeAttribute	This attribute is used on delegates created by the binding generator to properly map between signatures for Objective-C blocks and their corresponding exposed managed delegates. When binding Objective-C blocks, the binding generator will create a managed delegate whose signature is equivalent to the corresponding block's signature for the required binding code. However, this signature isn't necessarily accurate enough to re-create the block's signature at runtime (which is needed in some circumstances). This attribute makes it possible to find the type of the corresponding managed delegate that is exposed by the generated bindings, which does have enough information to re-create the corresponding block's signature.
WatchAttribute	Attribute indicating when an API was first introduced in watchOS.

Structs

BlockLiteral

Wraps a ECMA CLI delegate (C# lambdas, anonymous methods or delegates) as an Objective-C block.

Interfaces

INativeObject

A simple interface that is used to expose the unmanaged object pointer in various classes in Xamarin.iOS.

Enums

Arch	Used to represent the host on which Xamarin.iOS is running.
ArgumentSemantic	Represents the assignment semantics for properties.
AvailabilityKind	This enum is used to specify the type of availability information in an AvailabilityBaseAttribute.
BindingImplOptions	This enum is used by the BindingImplAttribute type to provide information about binding code.
BlockFlags	Flags for the BlockLiteral enum.
Dlfcn.RTLD	Dynamic loader resolution flags.
DlsymOption	Used to specify if a library requires using dlsym to resolve P/Invokes to native functions.
LinkTarget	Link targets available for LinkWithAttribute
MarshalManagedExceptionMode	This enum is used to specify what to do when an managed exception is thrown, and that exception reaches native code.
MarshalObjectiveCExceptionMode	This enum is used to specify what to do when an Objective-C exception is thrown, and that exception reaches managed code.
Platform	Enumeration values for the various iOS and macOS platforms supported by Xamarin.
PlatformArchitecture	This enum is used in the availability attributes to specify which architecture(s) any given attribute applies to.
PlatformName	This enum is used in the availability attributes to specify which platform any given attribute applies to.

Delegates

MarshalManagedExceptionHandler

MarshalObjectiveCExceptionHandler

Remarks

This namespace supports the Mono runtime extensions to integrate the Objective-C classes with the Mono managed runtime.