将两个 NSarray 转换为 NSString

Question

Hi so I have two NS Arrays in my view controller, with both the same number of count. btw this is for submitting for upload.

barcodeItems = [[NSMutableArray alloc] init];

barcodeItemsQuantity = [[NSMutableArray alloc] init];

Once the arrays have been populated this method will be called,

-(void) performUploadOperation {
parameters = [NSMutableDictionary dictionary];

// Add barcodes and quantity
if (barcodeItems != nil || barcodeItemsQuantity != nil) {

    [parameters setValue:barcodeItems forKey:@"upc"];
    [parameters setValue:barcodeItemsQuantity forKey:@"upcQuantity"];

   }
}

Once this is submitted another method will be called to convert it to nsstring

NSArray* upc = [parameters objectForKey:@"upc"];
NSArray* upcQuantity = [parameters objectForKey:@"upcQuantity"];

NSString* sample = [NSString stringWithFormat:@"{\"upc_list\" : { \"%@\": %@}}", upc, upcQuantity];
NSLog(@"%@", sample);

The result is this

{"upc_list" : { "(
    76239878,
    0827755090991,
    76239878
)": (
    12,
    23,
    32
)}}

and what I want to achieve is something like this. both arrays have the same count always

{"upc_list" : { "
   (
    "76239878" : 12,
    "0827755090991" : 23,
    "76239878" : 32
   )
 }}

Answer 1

@jordanzee: You can use the below code to get your expected result.

NSArray *upc = [parameters objectForKey:@"upc"];
NSArray *upcQuantity = [parameters objectForKey:@"upcQuantity"];

NSMutableDictionary *aMutDict = [NSMutableDictionary dictionary];
for(NSInteger aIndex = 0; aIndex < upc.count; aIndex++){
   [aMutDict setValue:upcQuantity[aIndex] forKey:upc[aIndex]];
}

NSString *sample = [NSString stringWithFormat:@"{\"upc_list\" : %@}", aMutDict];
NSLog(@"%@", sample);