NSURLConnection问题？

Question

HI， 我使用的示例代码从来自链路multiple url connection

处理多个NSURLConnection的inwhich我所指定的一个的方法，以使

CustomURLConnection *connection = [[CustomURLConnection alloc] initWithRequest:request delegate:self startImmediately:YES tag:tag]; 

通过以下

当我使用CustomURLConnection作为NSObject的

- (id)initWithRequest:(NSURLRequest *)request delegate:(id)delegate startImmediately:(BOOL)startImmediately tag:(NSString *)_tag 

{ 
connection = [[NSURLConnection alloc] initWithRequest:request delegate:delegate startImmediately:startImmediately]; 
self.tag = _tag; 
return self; 
    } 

它给出错误？

Answer 1

我想你应该尝试：

- (id)initWithRequest:(NSURLRequest *)request delegate:(id)delegate startImmediately:(BOOL)startImmediately tag:(NSString *)_tag 
{ 
    if(self = [super initWithRequest:request delegate:delegate]) 
    { 
     self.tag = _tag; 
    } 
    return self; 
    } 

（如果我得到你的权利和CustomURLConnection扩展NSURLConnection的，你贴的代码是CustomURLConnection的初始化代码。）

Answer 2

的问题是，有没有self 。如果从NSObjectCustomURLConnection继承方法应该是这样的：

- (id)initWithRequest:(NSURLRequest *)request delegate:(id)delegate startImmediately:(BOOL)startImmediately tag:(NSString *)_tag { 
     if(self = [super init]) { 
     self.connection = [[[NSURLConnection alloc] initWithRequest:request delegate:delegate startImmediately:startImmediately] autorelease]; 
     self.tag = _tag; 
     } 
     return self; 
} 

你也应该确保connection是类伊娃和dealloc得到正确释放。同为tag确保@implementation后添加

@synthesize tag,connection; 

，并申报了Ivar标签和属性。