How to Pass NSArray Parameter to Completion Block

Question

I want to pass the another NSArray as parameter , to completion block method ,as i am new to this concept, i can not understand the how to do it.Currently i am passing only one array, but now i want to pass second nsarray , in second array i want to pass with array with value so that i can use over there

typedef void(^completion)(NSArray *list);
 -(void) getMoreData:(completion) completion 

Calling Method

[Magento.service getMoreData:^(NSArray *list ) {
        if(list){
                 }

in above method i want to Pass NSArray , this method is in different class and i am calling from different . this array is using in this method .

Answer 1

You can call it just as a C function, for example, I have declared a new class MyClass. The content of the interface file is:

typedef void(^completion)(NSArray *list);

@interface MyClass : NSObject

- (void)getMoreData:(completion)completionBlock;

@end

and in the implementation

- (void)getMoreData:(completion)completionBlock
{
    // fullfil your array
    NSArray *array = @[@1, @2, @3];

    // call the completion block
    completionBlock(array);
}

and I am using it as follow:

MyClass *myClassInstance = [[MyClass alloc] init];
[myClassInstance getMoreData:^(NSArray *list) {
    if (list) {
        NSLog(@"%@", list);
    } else {
        NSLog(@"Nil array");
    }
}];

and the output is:

2013-05-09 16:29:00.676 Test[823:11303] (
    1,
    2,
    3
)