CODEWITHSUNDEEP
objective-ciosnsmutablearraynsarraynsdictionary
Luke Baumann
Luke Baumann

Reputation: 606

Retrieve NSDictionary from NSMutableArray

I am trying to put an NSDictionary within an NSArray. My aim is that each object in the array will be a dictionary with two keys and two objects. So they keys for the Dictionary will be called "TITLE" and "AUTHOR" and each will have a value, and that whole thing will be stored in an NSMutableArray object.

Here is the code I have (dataSource is an array with a list of titles, author is an array with a list of corresponding authors, and searchedData is the array I want the dictionary to go into an object of):

for (int i = 0; i<[dataSource count]-1; i++) {
    NSLog(@"in");
    NSString *authorString = [NSString stringWithFormat:@"%@",[author objectAtIndex:i]];
    NSString *titleString = [NSString stringWithFormat:@"%@",[dataSource objectAtIndex:i]];
    NSDictionary *dict = [NSDictionary dictionaryWithObjectsAndKeys:titleString, @"TITLE",authorString,@"AUTHOR", nil];
    [searchedData addObject:dict];
}

I tried this but either it doesn't work, or I don't know how to read the data from the dictionary within the array. I want to be able to say "get the object for key "title" from the dictionary in object n of searchedData, but I don't know how.

Thanks so much!!!

Luke

Upvotes: 0

Views: 2420

Answers (2)

herzbube
herzbube

Reputation: 13378

Your for loop skips the last element in the dataSource array. Other than that I can't see any problems with your code. Adding an immutable dictionary to an array is fine, retrieving it like H2CO3 shows is also ok.

Upvotes: 1

user529758
user529758

Reputation:

Tried this?

NSDictionary *nthDict = [mutableArray objectAtIndex:n];
NSString *title = [nthDict objectForKey:@"TITLE"];
NSString *author = [nthDict objectForKey:@"AUTHOR"];

Upvotes: 2

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