错误调用赛格瑞

Question

*** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: 'Receiver (<Test.gameView_ViewController: 0x145669e10>) has no segue with identifier 'backSegue'' 

***第一掷调用堆栈：
（0x1842c0f5c 0x198eb3f80 0x189b7b774 0x10005c5a0 0x100054b14 0x101151d70 0x101151d30 0x101157780 0x184278258 0x1842760c0 0x1841a4dc0 0x18f2f8088 0x18987ef60 0x10005d0c0 0x1996de8b8）
的libC++ abi.dylib：与未捕获的终止类型NSException例外

这是代码：

func stream(aStream: NSStream, handleEvent eventCode: NSStreamEvent) { 
    switch(eventCode){ 


    case NSStreamEvent.HasBytesAvailable: 

     var buffer = [UInt8](count: 4096, repeatedValue: 0) 


     if (aStream == GlobalVariables.inputStream){ 

      while (GlobalVariables.inputStream!.hasBytesAvailable){ 
       let len = GlobalVariables.inputStream!.read(&buffer, maxLength: buffer.count) 
       if(len > 0){ 
        let output = NSString(bytes: &buffer, length: buffer.count, encoding: NSUTF8StringEncoding)!.stringByTrimmingCharactersInSet( 
         NSCharacterSet.whitespaceAndNewlineCharacterSet()) 
        if (output != ""){ 
         / 

         / 
         var buf = UnsafeMutablePointer<CChar>(buffer) 

         var bufString: String = String.fromCString(buf)! 

         if ((delegate) != nil){ 
          delegate!.dataReceived(bufString) 
         } 

        } 
       } 
      } 


     } 


     break 

    case NSStreamEvent.OpenCompleted: 

     break 

    default: break 

    } 


} 

Answer 1

显然你不是呼唤g正确的对象上你的继续。请确保您在正确的对象上调用performSegueWithIdentifier:函数。例如：

这是正确的：

[self performSegueWithIdentifier:@"backSegue" sender:self]; 

这是不正确的：

[self.navigationController performSegueWithIdentifier:@"backSegue" sender:self];