-1
- (void)cancel {
[self.lock lock];
if (![self isFinished] && ![self isCancelled]) {
[self willChangeValueForKey:@"isCancelled"];
_cancelled = YES;
[super cancel];
[self didChangeValueForKey:@"isCancelled"];
// Cancel the connection on the thread it runs on to prevent race conditions
[self performSelector:@selector(cancelConnection) onThread:[[self class] networkRequestThread] withObject:nil waitUntilDone:NO modes:[self.runLoopModes allObjects]];
}
[self.lock unlock];
}
是的,你有這個代碼。和?什麼是失敗? – Cyrille 2014-11-25 14:54:07
對不起;)_cancelled =是;行出現錯誤:使用未聲明的標識符 – 2014-11-25 14:57:56
您是否已經聲明瞭相應的伊娃,或者在您的班級中是否已取消了@ @屬性(...)? – Cyrille 2014-11-25 14:59:12