DJI Mobile SDK Documentation
      Manager Classes
      DJISDKManager
      DJIKeyManager
      DJIFlyZoneManager
      DJIAppActivationManager
      DJIUserAccountManager
      DJIDataProtectionManager
      DJILDMManager
      DJIFlightHubManager
      Base Classes
      DJIBaseProduct
      DJIBaseComponent
      Product Classes
      DJIAircraft
      DJIHandheld
      Component Classes
      DJIFlightController
      DJIBattery
      DJICamera
      DJIGimbal
      DJIAirLink
      DJIRemoteController
      DJIHandheldController
      DJIMobileRemoteController
      DJIPayload
      DJIAccessoryAggregation
      Mission Classes
      DJIMissionControl
      DJIMissionAction
      DJIMissionTrigger
      DJIWaypointMissionOperator
      DJIFollowMeMissionOperator
      DJIPanoramaMissionOperator
      DJIHotpointMissionOperator
      DJIIntelligentHotpointMissionOperator
      DJITapFlyMissionOperator
      DJIActiveTrackMissionOperator
      DJIMission
      Misc Classes
      DJIParamCapability
      NSError
      DJIDiagnostics
      DJIRemoteLogger

      class DJIKeyManager

      @interface DJIKeyManager : NSObject
      Header:DJIKeyManager.h
      Inherits From:NSObject
      Description:

      DJIKeyManager provides access to the keyed interface using DJIKey and corresponding subclass objects. DJIKeyManager is accessed from keyManager in DJISDKManager.

      Class Members:
      method getValueForKey
      - (nullable DJIKeyedValue *)getValueForKey:(DJIKey *)key
      Header:DJIKeyManager.h
      Description:

      Returns the latest known value if available for the key. Does not pull it from the product if unavailable.

      Input Parameters:
      DJIKey * keyA valid gettable key
      Return:
      nullable DJIKeyedValue *A value object or nil if no previous value was stored.
      method getValueForKey:withCompletion
      - (void)getValueForKey:(DJIKey *)key
              withCompletion:(DJIKeyedGetCompletionBlock)completion
      Header:DJIKeyManager.h
      Description:

      Performs a get on a gettable key, pulling the information from the product if necessary.

      Input Parameters:
      DJIKey * keyA valid gettable key
      DJIKeyedGetCompletionBlock completionA valid get completion block.
      method setValue:forKey:withCompletion
      - (void)setValue:(id)value
                forKey:(DJIKey *)key
              withCompletion:(DJIKeyedSetCompletionBlock)completion
      Header:DJIKeyManager.h
      Description:

      Performs a set on a settable key, changing attributes on the connected product.

      Input Parameters:
      id valueA value object relevant to the given key
      DJIKey * keyA valid settable key
      DJIKeyedSetCompletionBlock completionA set completion block.
      method performActionForKey:withArguments:andCompletion
      - (void)performActionForKey:(DJIKey *)key
                    withArguments:(nullable NSArray *)arguments
                    andCompletion:(DJIKeyedActionCompletionBlock)completion
      Header:DJIKeyManager.h
      Description:

      Performs an action on an actionable key.

      Input Parameters:
      DJIKey * keyA valid actionable key
      nullable NSArray * argumentsOptional arguments relevant to the specific key
      DJIKeyedActionCompletionBlock completionAn action completion block.
      method startListeningForChangesOnKey:withListener:andUpdateBlock
      - (void)startListeningForChangesOnKey:(DJIKey *)key
                               withListener:(id)listener
                             andUpdateBlock:(DJIKeyedListenerUpdateBlock)updateBlock
      Header:DJIKeyManager.h
      Description:

      Subscribes the listener object to all changes of value on the given key.

      Input Parameters:
      DJIKey * keyA valid value-based key (get, set and/or action)
      id listenerA valid object to hold the subscription
      DJIKeyedListenerUpdateBlock updateBlockA valid update block
      method stopListeningOnKey:ofListener
      - (void)stopListeningOnKey:(DJIKey *)key
                     ofListener:(id)listener
      Header:DJIKeyManager.h
      Description:

      Stops the subscription to updates of a specific key value for a specific listener. Does not affect other listeners subscribing to this key or other subscriptions of the listener.

      Input Parameters:
      DJIKey * keyA valid value-based key
      id listenerA listener object that is subscribed to the key that was setup with startListeningForChangesOnKey:withListener:andUpdateBlock.
      method stopAllListeningOfListeners
      - (void)stopAllListeningOfListeners:(id)listener
      Header:DJIKeyManager.h
      Description:

      Stops all subscriptions on all key value updates for the given listener.

      Input Parameters:
      id listenerThe listener object passed to startListeningForChangesOnKey:withListener:andUpdateBlock.
      method isKeySupported
      - (BOOL)isKeySupported:(DJIKey *)key
      Header:DJIKeyManager.h
      Description:

      Determines if a key is supported by the connected product.

      Input Parameters:
      DJIKey * keyKey to be check on current product.
      Return:
      BOOLYES if the key is supported.
      class
      DJIKey
      typedef block DJIKeyedGetCompletionBlock
      typedef void (^DJIKeyedGetCompletionBlock)(DJIKeyedValue * _Nullable value, NSError * _Nullable error)
      Header:DJIKeyManager.h
      Description:

      The completion block called when performing a get on a key.

      Input Parameters:
      DJIKeyedValue * _Nullable valueAn optional value returned as a result of the get. Nil if no value exists yet or if an error is returned.
      NSError * _Nullable errorAn optional error object in case the call failed.
      typedef block DJIKeyedSetCompletionBlock
      typedef void (^DJIKeyedSetCompletionBlock)(NSError * _Nullable error)
      Header:DJIKeyManager.h
      Description:

      The completion block called when performing a set on a key.

      Input Parameters:
      NSError * _Nullable errorAn optional error in case the call failed.
      typedef block DJIKeyedActionCompletionBlock
      typedef void (^DJIKeyedActionCompletionBlock)(BOOL finished, DJIKeyedValue * _Nullable response, NSError * _Nullable error)
      Header:DJIKeyManager.h
      Description:

      The completion block called when performing an action on a key.

      Input Parameters:
      BOOL finishedWhether or not the action finished.
      DJIKeyedValue * _Nullable responseThe optional response value of the action.
      NSError * _Nullable errorThe option error in case the call failed.
      typedef block DJIKeyedListenerUpdateBlock
      typedef void (^DJIKeyedListenerUpdateBlock)(DJIKeyedValue * _Nullable oldValue, DJIKeyedValue * _Nullable newValue)
      Header:DJIKeyManager.h
      Description:

      The completion block, called every time the value behind a key is updated.

      Input Parameters:
      DJIKeyedValue * _Nullable oldValueThe old value. nil if no value was present before.
      DJIKeyedValue * _Nullable newValueThe new value. nil if the stored values are being flushed.