ios - 如何在 NSInvocationOpreation 中传递对象

Question

我创建了一个 NSInvocationOpertion 对象，如下所示

NSString *myString = @"Jai Hanuman";
NSInvocationOperation *operation = [[NSInvocationOperation alloc] initWithTarget:self selector:@selector(taskMethod) object:myString];
NSOperationQueue *operatioQueue = [[NSOperationQueue alloc] init];
    [operatioQueue addOperation:operation];

谁能告诉我如何访问 taskMethod 中的 myString 对象？可能吗？

- (void)taskMethod{
    NSLog(@"Oh! Invocation's working buck");
}

Answer 1

你可以试试这个:

将您的方法更改为:

- (void)taskMethod:(NSString *) message{
NSLog(@"Oh! Invocation's working buck");
        message=//your string object;
  }

和

NSInvocationOperation *operation = [[NSInvocationOperation alloc] initWithTarget:self selector:@selector(taskMethod:) object:myString];