objective-c - 如何在 Objective-C 中保持输出流打开？

Question

我正在将数据写入事件内的流:

- (void)stream:(NSStream *)stream handleEvent:(NSStreamEvent)eventCode

如下(摘自苹果文档):

case NSStreamEventHasSpaceAvailable:
    uint8_t *readBytes = (uint8_t *)[self.outData mutableBytes];            
    readBytes += byteIndex;            
    int dataLength = [self.outData length];            
    unsigned int length = ((dataLength - byteIndex >= 1024) ? 1024 : (dataLength - byteIndex));            
    uint8_t buffer[length];            
    (void)memcpy(buffer, readBytes, length);            
    length = [self.outputStream write:(const uint8_t *)buffer maxLength:length];            
    byteIndex += length;            
    break;

但是，当输出流中没有其他内容可写入时，会调用事件 NSStreamEventEndEncountered，因此输出流将被丢弃。我怎样才能保持这个流打开以供写入？根据Apple's documentation该事件被正确调用，因为没有任何内容写入输出流。有什么想法吗？

Answer 1

您是否已将流放入运行循环中？ 请参阅此处的示例:http://www.raywenderlich.com/3932/how-to-create-a-socket-based-iphone-app-and-server