Singleton Manager initWithDelegate

Question

我有2位经理。一个是另一个孩子。

Manager1.h

@protocol LoginDelegate <NSObject>

-(id) loginOK: (id) response;
-(id) loginKO: (id) response;

@end

@protocol LogoutDelegate <NSObject>

-(id) logoutOK: (id) response;
-(id) logoutKO: (id) response;

@end

@interface Manager1 : NSObject

- (id) init __attribute__((unavailable("You have to use Manager2 instead.")));
-(id) login;
-(id) logout;

@end

Manager1.m

@interface Manager1 ()

@property (nonatomic, weak) id <LoginDelegate> loginDelegate;
@property (nonatomic, weak) id <LogoutDelegate> logoutDelegate;

@end

@implementation Manager1

- (id)initWithDelegate:(id)aDelegate
{
    self.logoutDelegate = aDelegate;
    self.loginDelegate = aDelegate;

    return self;
}

Manager2.h

@protocol OperationDelegate <NSObject>

-(id) operationOK: (id) response;
-(id) operationKO: (id) response;

@end

@interface Manager2 : Manager1

+ (Manager2 *)sharedInstance;
-(id)init __attribute__((unavailable("You have to use initWithDelegate instead.")));
-(id)initWithDelegate:(id)aDelegate;
-(void)doOperation;

@end

Manager2.m

@interface Manager2 ()

@property (nonatomic, weak) id <OperationDelegate> operationDelegate;

@end

@implementation Manager2

- (id)initWithDelegate:(id)aDelegate
{
    if (self = [super initWithDelegate : aDelegate])
    {
        self.operationDelegate = aDelegate;
    }

    return self;
}

实际上，我可以毫无问题地执行我的方法。 （Swift示例）：

ViewController.m

let manager2 = Manager2(delegate: self)
manager2.login()
manager2.logout()
manager2.doOperation()

我代表的回应：

func loginOK(response: id) {

}

func loginKO(response: id) {

}

现在，我想要一个Manager2单例。我在 Manager2.m ：

中尝试了

static Manager2 *sharedManager = nil;

+ (Manager2 *) sharedManager
    {
        @synchronized(self)
        {
            if (sharedManager == nil)
                sharedManager = [[self alloc] initWithDelegate:self];
        }
        return sharedManager;
}

ViewController1.m 它可以响应。

let manager2 = Manager2(delegate: self)

ViewController2.m 不要回复任何内容。代表是残疾人。

let manager2 = Manager2.sharedIntance()

我该怎么做？我必须在sharedInstance中发送我的代理人？非常感谢你

Answer 1

确切地说，您使用Manager2初始化了自Manager1's initWithDelegate的实例

- (id)initWithDelegate:(id)aDelegate{
    if (self = [super initWithDelegate:aDelegate]){
        self.operationDelegate = aDelegate;
    }
    return self;
}

但是Manager1没有初始化它，因为它应该是

- (id)initWithDelegate:(id)aDelegate{
    if (self = [super init]){
        self.logoutDelegate = aDelegate;
        self.loginDelegate = aDelegate;
    }
    return self;
}

Answer 2

我找到了解决方案：

static Manager2 *sharedInstance = nil;

- (instancetype)init
{
    static dispatch_once_t onceToken;
    dispatch_once(&onceToken, ^{
        sharedInstance = self;
    });

    return sharedInstance;
}

+ (Manager2 *)sharedInstanceWithDelegate: (id)aDelegate
{    
    if (aDelegate != nil)
        [sharedInstance setDelegate:aDelegate];

    return sharedInstance;
}

一个简单的init然后，当我得到实例时发送委托。