iOS - 将输入流的代理设置为另一个类 [英] iOS - Setting delegate of input stream to another class

问题描述

我想知道如果可以将输入流的委托设置为另一个类。到目前为止，我遇到的所有例子都是self：
[inputStream setDelegate：self] 。
我想将代理设置为另一个类，如 ViewController 不是自己。如果您的 ViewController 正在响应<$（$）$ $ $ $ $ $ $ $ $ code> NSStreamDelegate ，您可以启动控制器的实例并照常设置代理。

  @interface ViewController：NSOperation< NSStreamDelegate> 
 ... 
  

-

  ViewController * vc = [[ViewController alloc] init]; 
 [inputStream setDelegate：vc]; 
  

例如

更新：

使用 id 或 UIViewController< NSStreamDelegate> 要保存父级的 TCPConnection 类。

例如：

  // TCPConnection.h 
 
 @interface TCPConnection：NSOperation< NSStreamDelegate> 
 
 @property（nonatomic，assign）UIViewController< NSStreamDelegate>父母
 
  - （id）initWithParent :( UIViewController< NSStreamDelegate> *）p_parent; 
 ... 
  

...

  // TCPConnection.m 
 
  - （id）initWithParent：（UIViewController< NSStreamDelegate> *）p_parent 
 {
 self = [super init]; 
 self.parent = p_parent; 
返回自我; 
} 
 
 // UIViewController< NSStreamDelegate> .m 
 
 TCPConnection * connection = [[TCPConnection alloc] initWithParent：self]; 
  

或一个singlton解决方案，你总是只呼叫

  TCPConnection * connection = [TCPConnection sharedInstance]; 
  

，只有这个类的一个实例。对于大多数情况下最好的方法;）

i am wondering that if it is possible to set the delegate of input stream to another class. So far all examples i have encountered are with self: [inputStream setDelegate:self]. I want to set delegate to another class like a ViewController not self. Thanks in advance.

解决方案

if your ViewController is responding to NSStreamDelegate, you can initiate an instance of the controller and set the delegate as usual.

@interface ViewController : NSOperation<NSStreamDelegate>
...

-

ViewController *vc = [[ViewController alloc] init];
[inputStream setDelegate:vc];

for example

update:

use an id or UIViewController<NSStreamDelegate> variable in the TCPConnection class to hold the parent.

For example:

// TCPConnection.h

@interface TCPConnection : NSOperation<NSStreamDelegate>

@property(nonatomic, assign) UIViewController<NSStreamDelegate> parent;

-(id)initWithParent:(UIViewController<NSStreamDelegate> *)p_parent;
...

...

// TCPConnection.m

-(id)initWithParent:(UIViewController<NSStreamDelegate> *)p_parent
{
    self = [super init];
    self.parent = p_parent;
    return self;
}

// UIViewController<NSStreamDelegate>.m

TCPConnection *connection = [[TCPConnection alloc] initWithParent:self];

Or a singlton solution, where you always call only

TCPConnection *connection = [TCPConnection sharedInstance];

and have only one instance of this class. For the most cases the best way ;)

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