Ios 委托不在单例模式下工作

为了在多视图上建立网络连接，我创建了一个单例网络控制器来处理服务器和客户端之间的数据。不幸的是，它不起作用，因为委托方法没有从我的单例视图调用到另一个视图。。下面是我的代码：

**单例是SocketIOConnection.h和.m

//
//  SocketIOConnection.h

#import <Foundation/Foundation.h>
#import "SocketIO.h"
#import "SocketIOPacket.h"

@protocol SocketIOConnectionDelegate <NSObject>
@required
- (void) receivedPacket:(id)packet;
@end

@interface SocketIOConnection : NSObject <SocketIODelegate> {

    SocketIO *IO;
    id <SocketIOConnectionDelegate> delegate;

}

@property (nonatomic, retain) IBOutlet SocketIO *IO;
@property (retain) id <SocketIOConnectionDelegate> delegate;


+ (SocketIOConnection *)sharedSingleton;

@end



//
//  SocketIOConnection.m

#import "SocketIOConnection.h"

@implementation SocketIOConnection

@synthesize IO, delegate;

static SocketIOConnection *shared = NULL;

-(id)init {
    if (self = [super init]) {
        IO = [[SocketIO alloc] initWithDelegate:self];
        [IO connectToHost:@"domain.com" onPort:443];
    }
    return self;
}

+ (SocketIOConnection *)sharedSingleton
{
    @synchronized(shared)
    {
        if ( !shared || shared == NULL )
        {
            // allocate the shared instance, because it hasn't been done yet
            shared = [[SocketIOConnection alloc] init];
        }

        return shared;
    }
}

-(void)socketIO:(SocketIO *)socket didReceiveEvent:(SocketIOPacket *)packet {
    NSLog(@"Delegating received packet..");
    [delegate receivedPacket:packet.dataAsJSON];
}

@end

//
//SocketIOConnection.h
#进口
#导入“SocketIO.h”
#导入“SocketIOPacket.h”
@协议套接字连接委托
@必需的
-（无效）接收数据包：（id）数据包；
@结束
@接口套接字连接：NSObject{
SocketIO*IO；
id代表；
}
@属性（非原子，保留）IBO插座插座*IO；
@属性（保留）id委托；
+（SocketIOConnection*）共享辛格尔顿；
@结束
//
//SocketIOConnection.m
#导入“SocketIOConnection.h”
@实现SocketIOConnection
@综合IO，代表；
静态SocketIOConnection*shared=NULL；
-（id）init{
if（self=[super init]）{
IO=[[SocketIO alloc]initWithDelegate:self]；
[IO connectToHost:@“domain.com”端口：443]；
}
回归自我；
}
+（SocketIOConnection*）共享辛格尔顿
{
@同步（共享）
{
如果（！shared | | shared==NULL）
{
//分配共享实例，因为它尚未完成
共享=[[SocketIOConnection alloc]init]；
}
收益共享；
}
}
-（void）socketIO:（socketIO*）socket direceiveevent:（SocketIOPacket*）数据包{
NSLog（@“委托接收的数据包…”）；
[委托接收数据包：packet.dataAsJSON]；
}
@结束

这是我的单例代码，下面我将发布我的viewcontroller.h和.m的代码

//
//  ViewController.h

#import <UIKit/UIKit.h>
#import "MBProgressHUD.h"
#import "SocketIOConnection.h"

@interface ViewController : UIViewController <MBProgressHUDDelegate, SocketIOConnectionDelegate>
{
    MBProgressHUD   *HUD;
}

@property (nonatomic, retain) SocketIOConnection *IOConnection;

@end



//
//  ViewController.m

#import "ViewController.h"

@interface ViewController ()

@end

@implementation ViewController {
    NSDictionary *operatorData;
}

@synthesize SESSION, IOConnection;

#pragma mark - view Did Load, View Will Appear & didReceiveMemoryWarning

- (void)viewDidLoad
{
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.

}

-(void)viewWillAppear:(BOOL)animated {

    IOConnection    = [SocketIOConnection sharedSingleton];

    // fire auth function to verify the operator and sign him in.
    NSMutableDictionary *tokenAndLicense = [[NSMutableDictionary alloc] init];
    [tokenAndLicense setValue:[operatorData objectForKey:@"token"] forKey:@"__ca.token"];
    [tokenAndLicense setValue:[operatorData objectForKey:@"license"] forKey:@"__ca.license"];
    [IOConnection.IO sendEvent:@"auth" withData:tokenAndLicense];

}

-(void)receivedPacket:(id)packet { <<<< void that should be fired because of the delegate
    NSLog(@"Receive ieks..");
}

- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

@end

//
//ViewController.h
#进口
#导入“MBProgressHUD.h”
#导入“SocketIOConnection.h”
@界面ViewController:UIViewController
{
MBHUD*HUD；
}
@属性（非原子，保留）SocketIOConnection*IOConnection；
@结束
//
//ViewController.m
#导入“ViewController.h”
@界面视图控制器（）
@结束
@实现视图控制器{
NSDictionary*运算符数据；
}
@综合会话、连接；
#pragma标记-视图已加载，视图将显示&didReceiveMemoryWarning
-（无效）viewDidLoad
{
[超级视图下载]；
//加载视图后，通常从nib执行任何其他设置。
}
-（无效）视图将显示：（BOOL）动画{
IOConnection=[SocketIOConnection sharedSingleton]；
//启动验证功能，验证操作员并使其登录。
NSMutableDictionary*tokenAndLicense=[[NSMutableDictionary alloc]init]；
[tokenAndLicense setValue:[operatorData objectForKey:@“token”]forKey:@“ca.token”]；
[tokenAndLicense setValue:[operatorData objectForKey:@“license”]forKey:@“ca.license”]；
[IOConnection.IO sendEvent:@“auth”with data:tokenAndLicense]；
}
-（void）receivedPacket：（id）packet{看起来您忘记在代码中设置委托。您应该在调用视图控制器的
视图中的singleton后立即执行此操作

-(void)viewWillAppear:(BOOL)animated {

    IOConnection    = [SocketIOConnection sharedSingleton];

    IOConnection.delegate = self;

    // fire auth function to verify the operator and sign him in.
    NSMutableDictionary *tokenAndLicense = [[NSMutableDictionary alloc] init];
    [tokenAndLicense setValue:[operatorData objectForKey:@"token"] forKey:@"__ca.token"];
    [tokenAndLicense setValue:[operatorData objectForKey:@"license"] forKey:@"__ca.license"];
    [IOConnection.IO sendEvent:@"auth" withData:tokenAndLicense];

}

如果您是初学者，请始终检查ARC on并使用属性（非自转、弱）对于自定义委托。是的，ARC处于启用状态。谢谢提示。您在哪里设置委托？@gaige您是什么意思？我正在socketioconnection中创建委托。h？您创建了变量，但它为零，因此向委托发送消息没有任何作用。您需要实际将委托分配到您希望消息传递的位置。很高兴为您服务救命啊-干杯