channel doesn't have 'subscribe' interface anymore?

[thomasyuan]

Pod version 1.04.

This is what I have in ARTChannel.h

//
//  ARTChannel.h
//  ably
//
//  Created by Yavor Georgiev on 20.08.15.
//  Copyright (c) 2015 г. Ably. All rights reserved.
//

#import <Foundation/Foundation.h>
#import "ARTTypes.h"
#import "ARTDataEncoder.h"
#import "ARTLog.h"

@class ARTChannelOptions;
@class ARTMessage;
@class __GENERIC(ARTPaginatedResult, ItemType);
@class ARTDataQuery;

ART_ASSUME_NONNULL_BEGIN

@interface ARTChannel : NSObject

@property (nonatomic, strong, readonly) NSString *name;

- (instancetype)initWithName:(NSString *)name andOptions:(ARTChannelOptions *)options andLogger:(ARTLog *)logger;

- (void)publish:(art_nullable NSString *)name data:(art_nullable id)data;
- (void)publish:(art_nullable NSString *)name data:(art_nullable id)data callback:(art_nullable void (^)(ARTErrorInfo *__art_nullable error))callback;

- (void)publish:(art_nullable NSString *)name data:(art_nullable id)data clientId:(NSString *)clientId;
- (void)publish:(art_nullable NSString *)name data:(art_nullable id)data clientId:(NSString *)clientId callback:(art_nullable void (^)(ARTErrorInfo *__art_nullable error))callback;

- (void)publish:(__GENERIC(NSArray, ARTMessage *) *)messages;
- (void)publish:(__GENERIC(NSArray, ARTMessage *) *)messages callback:(art_nullable void (^)(ARTErrorInfo *__art_nullable error))callback;

- (void)history:(void(^)(__GENERIC(ARTPaginatedResult, ARTMessage *) *__art_nullable result, ARTErrorInfo *__art_nullable error))callback;

@end

ART_ASSUME_NONNULL_END

[ricardopereira]

@thomasyuan subscribe is only available in Realtime, see https://github.com/ably/ably-ios/blob/master/Source/ARTRealtimeChannel.h#L34-L37

Are you facing some sort of error?

[thomasyuan]

Thank @ricardopereira, my mistake.
When I read the document, I focused on swift code. So I defined
var channel: ARTChannel!
Change to
var channel: ARTRealtimeChannel!
fixed it.