我正在使用下面的代码为nsoperation.The问题是所有三个任务串行运行。我可以做什么使任务并行运行。我尝试实施开始和isconcurrent方法,但它does not work.please帮助... 鉴于是我uaview控制器类nsoperation为什么连续工作?
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
Store *S=[ [Store alloc] init];
S.a=25;
NSOperationQueue *someQueue = [NSOperationQueue currentQueue];
someQueue.MaxConcurrentOperationCount = 3;
NSInvocationOperation *invocationOp2 = [[NSInvocationOperation alloc] initWithTarget:self
selector:@selector(ymain)
object:nil];
NSInvocationOperation *invocationOp3 = [[NSInvocationOperation alloc] initWithTarget:self
selector:@selector(ymain2)
object:nil];
NSInvocationOperation *invocationOp4 = [[NSInvocationOperation alloc] initWithTarget:self
selector:@selector(ymain3)
object:nil];
[someQueue addOperation:invocationOp2];
[someQueue addOperation:invocationOp3];
[someQueue addOperation:invocationOp4];
}
-(void)ymain
{
for (int i = 0 ; i < 10000 ; i++) {
NSLog(@"in the A main"); }
}
这是其子类
@interface A : NSOperation
@end
@implementation A
bool executing;
bool finished;
-(void)main
{
}
- (BOOL)isConcurrent
{
return YES;
}
- (BOOL)isReady
{
return YES;
}
你需要继承'NSOperation'并覆盖那里的一些方法,而不是在你的'UIViewController'中。看看[Apple的编程指南](http://developer.apple.com/library/ios/#documentation/General/Conceptual/ConcurrencyProgrammingGuide/OperationObjects/OperationObjects.html)。 – hwaxxer
我已经在另一个类中划分了nsoperation – zzzzz
如果你划分NSOperation,为什么你不使用子类? –