iphone網絡多線程

Question

我有一個從網絡接收數據的類，名爲NetWorkConnect。以下方法在NetWorkConnect.m中，這是委託方法。 m_DisplayMarketViewController是類DisplayMarketViewController的一個實例。

-(void)stream:(NSStream*)stream handleEvent:(NSStreamEvent)eventCode{ 
    switch (eventCode) { 
     case NSStreamEventHasBytesAvailable: 
     { 
      if (data == nil) { 
      data = [[NSMutableData alloc] init]; 
      } 
      uint8_t buf[1024]; 
      unsigned int len = 0; 
      len = [(NSInputStream *)stream read:buf maxLength:1024]; 
      if(len) {  
      [data appendBytes:(const void *)buf length:len]; 
      } else { 
      NSLog(@"No data."); 
      } 
      [self storeData:data];    
      [m_DisplayMarketViewController updateMarket:self];     
    } break; 
    default: 
     break; 
    } 
} 

updateMarket經過自我DisplayMarketViewController，所以DisplayMarketViewController可以使用從network.and在DisplayMarketViewController.m文件時我更新數據的數據將被displayed.but接收的數據的方法中，我可以顯示數據，但接口似乎有點阻塞，所以我打算使用多線程....但如何去做呢？謝謝。

Answer 1

You can subclassing NSOperation and in implementation file you can try something like this. 

- (void)main 
{ 
    @try 
    { 
     NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init]; 

     executing_ = YES; 
     [self performSelector:@selector(makeSomethingInBackground:) onThread:[NSThread  currentThread] withObject:nil waitUntilDone:NO]; 
[pool drain]; 
    } 
    @catch (NSException * e) { 
     NSLog(@"Exception: %@", e); 
    } 
} 


#pragma mark - 
#pragma mark Overrides 

- (BOOL)isConcurrent 
{ 
    return YES; 
} 

- (BOOL)isExecuting 
{ 
    return executing_; 
} 

- (BOOL)isFinished 
{ 
    return finished_; 
} 

- (void)cancel 
{ 
    [super cancel]; 
    [self done]; 
} 
In another class create instance of your NSOperation subclass. 
YourNSOperationSubclass *operation = [YourNSOperationSubclass new]; 
NSOperationQueue *op = [NSOperationQueue new]; [op addOperation operation];