NSOperationの引数は何倍ですか？

Question

私のアプリでNSOperationQueueを使用しています。私は操作に複数の引数を設定したいのですが、どうすればいいのですか？

NSOperationQueue *queue = [[[NSOperationQueue alloc] init] autorelease]; 
    NSInvocationOperation *operation = [[NSInvocationOperation alloc] initWithTarget:self selector:@selector(methodCall) object:nil]; 
    [queue addOperation:operation]; 
    [operation release]; 

Answer 1

必要なデータを含む配列または辞書を作成する必要があります。

例：

NSOperationQueue *queue = [[[NSOperationQueue alloc] init] autorelease]; 
NSDictionary *argumentDictionary = [NSDictionary dictionaryWithObjectsAndKeys:object1, @"Object1Key", object2, @"Object2Key", nil]; 
NSInvocationOperation *operation = [[NSInvocationOperation alloc] initWithTarget:self selector:@selector(methodCall:) object:argumentDictionary]; 
[queue addOperation:operation]; 
[operation release]; 

と​​にあなたがその辞書に格納されたオブジェクトと値を使用することができます。

Answer 2

//Correct approach is to use NSInvocation 
//create nsinvocation obj 
SEL selector= @selector(methodName:); 
NSMethodSignature * sig= [[self class] instanceMethodSignatureForSelector: selector]; 
NSInvocation * invocation=[NSInvocation invocationWithMethodSignature:sig]; 
[invocation setTarget: self]; 
[invocation setSelector:selector]; 
[invocation setArgument:&firstArgument atIndex: 2]; 
[invocation setArgument:&secArgument atIndex: 3]; 
//operation with invocation 
NSInvocationOperation* operation = [[NSInvocationOperation alloc] initWithInvocation:invocation]; 
[opQueue addOperation:operation];