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Instance Methods | Properties | List of all members
<FlutterPluginRegistrar> Protocol Reference

`#import <FlutterPlugin.h>`

Inheritance diagram for <FlutterPluginRegistrar>:

## Instance Methods
(void) | - publish:
(void) | - addMethodCallDelegate:channel:
(void) | - addApplicationDelegate:
(void) | - addSceneDelegate:
(NSString *) | - lookupKeyForAsset:
(NSString *) | - lookupKeyForAsset:fromPackage:
Instance Methods inherited from <FlutterBaseRegistrar>
(NSObject< FlutterBinaryMessenger > *) | - messenger
(NSObject< FlutterTextureRegistry > *) | - textures
(void) | - registerViewFactory:withId:
(void) | - registerViewFactory:withId:gestureRecognizersBlockingPolicy:

## Properties
UIViewController * | viewController

## Detailed Description

Registration context for a single `FlutterPlugin`, providing a one stop shop for the plugin to access contextual information and register callbacks for various application events.

Registrars are obtained from a `FlutterPluginRegistry` which keeps track of the identity of registered plugins and provides basic support for cross-plugin coordination.

Definition at line 349 of file FlutterPlugin.h.

## Method Documentation

## ◆ addApplicationDelegate:

- (void) addApplicationDelegate: |  | ("Disallowed in plugins used in app extensions") | NS_EXTENSION_UNAVAILABLE_IOS |

Registers the plugin as a receiver of `UIApplicationDelegate` calls.

Parameters

  delegate | The receiving object, such as the plugin's main class.

## ◆ addMethodCallDelegate:channel:

- (void) addMethodCallDelegate: |  | (NSObject< FlutterPlugin > *) | delegate
channel: |  | (FlutterMethodChannel *) | channel

Registers the plugin as a receiver of incoming method calls from the Dart side on the specified `FlutterMethodChannel`.

Parameters

  delegate | The receiving object, such as the plugin's main class.
  channel | The channel

## ◆ addSceneDelegate:

- (void) addSceneDelegate: |  | (ios(13.0)) | API_AVAILABLE |

Registers the plugin as a receiver of `UISceneDelegate` and `UIWindowSceneDelegate` calls.

Parameters

  delegate | The receiving object, such as the plugin's main class.

## ◆ lookupKeyForAsset:

- (NSString*) lookupKeyForAsset: |  | (NSString *) | asset |

Returns the file name for the given asset. The returned file name can be used to access the asset in the application's main bundle.

Parameters

  asset | The name of the asset. The name can be hierarchical.

Returns
  the file name to be used for lookup in the main bundle.

## ◆ lookupKeyForAsset:fromPackage:

- (NSString*) lookupKeyForAsset: |  | (NSString *) | asset
fromPackage: |  | (NSString *) | package

Returns the file name for the given asset which originates from the specified package. The returned file name can be used to access the asset in the application's main bundle.

Parameters

  asset | The name of the asset. The name can be hierarchical.
  package | The name of the package from which the asset originates.

Returns
  the file name to be used for lookup in the main bundle.

## ◆ publish:

- (void) publish: |  | (NSObject *) | value |

Publishes a value for external use of the plugin.

Plugins may publish a single value, such as an instance of the plugin's main class, for situations where external control or interaction is needed.

The published value will be available from the `FlutterPluginRegistry`. Repeated calls overwrite any previous publication.

Parameters

  value | The value to be published.

## Property Documentation

## ◆ viewController

- (UIViewController*) viewController
| read atomic assign

The `UIViewController` whose view is displaying Flutter content.

The plugin typically should not store a strong reference to this view controller.

This property is provided for backwards compatibility for apps that assume a single view, and will eventually be replaced by the multi-view API variant.

This property may be |nil|, for instance in a headless environment, or when the underlying Flutter engine is deallocated.

Definition at line 363 of file FlutterPlugin.h.

The documentation for this protocol was generated from the following file:

- shell/platform/darwin/ios/framework/Headers/FlutterPlugin.h