iOS，AFURLConnectionOperation

Question

我使用此代码，但有时我收到了Exc错误访问

这是代码：

- (void)operationDidStart {
    [self.lock lock];
    if (! [self isCancelled]) {
        self.connection = [[NSURLConnection alloc] initWithRequest:self.request delegate:self startImmediately:NO];

        NSRunLoop *runLoop = [NSRunLoop currentRunLoop];
        for (NSString *runLoopMode in self.runLoopModes) {
            [self.connection scheduleInRunLoop:runLoop forMode:runLoopMode];
            [self.outputStream scheduleInRunLoop:runLoop forMode:runLoopMode];
        }

我收到了AFnetworking信号Sigbart

* [self.outputStream scheduleInRunLoop：runLoop forMode：runLoopMode];

FLAC__STREAM_ENCODER_UNINITIALIZED

有时候

线程7 AFNetworking EX_BAD_ACESS（代码= 1，地址= OxO）