I want to replace Json values to another string values in iOS

Question

Using Json I have retrieve some values to UITableViewCell

NSString *sample = [[array objectAtIndex:indexPath.row] objectForKey:@"food"];

I am getting 1,2,3,4,6 in my sample string values

But I want to show like, if for example 1=apple 2=grape 3=orange 4=pineapple 5=lemon 6=All

I want the result to be apple,grape,orange,pineapple,All in my sample string values

I am getting like this from json "food":"1,2,3,4,6",but I want to replace 1,2,3,4,6 into apple,grape,orange,pineapple,All and if food values is "food":"1,2" and I want to show apple,grape in tableviewcell — micMac Solutions, Jul 23 '19 at 07:03
@micMacSolutions Yes that I understand but where? Please share your json data and the node where you want to replace this. — TheTiger, Jul 23 '19 at 07:06
`Objective-C` doesn't has `String` type enums. So if you elaborate more then I can answer accordingly. — TheTiger, Jul 23 '19 at 07:08
@micMacSolutions The `json data` and how do you want to replace.. as `String` or just want to identify 1 as apple ? — TheTiger, Jul 23 '19 at 07:12
@TheTiger yes I just want to show another string based on that sample string value — micMac Solutions, Jul 23 '19 at 07:15
1=apple 2=grape 3=orange 4=pineapple 5=lemon 6=All if food values is "food":"1" I want to show "apple" in my new string, if food values is "food":"2" I want to show "grape",if food values is "food":"1,2" I want to show "apple,grape" in my new string — micMac Solutions, Jul 23 '19 at 07:18

TheTiger · Accepted Answer · 2019-07-23T07:36:55.277

In Objective-C there is no built in enums available for String types. You can declare enums as Integer and then make a function or an array of strings which return the string value for that enum.

Declare in your .h file.

typedef NS_ENUM(NSInteger, FRUIT) {
    APPLE = 1,
    GRAPE,
    ORANGE,
    PINEAPPLE,
    LEMON,
    All
};

extern NSString * const FRUITString[];

Define in your .m file.

NSString * const FRUITString[] = {
    [APPLE] = @"APPLE",
    [GRAPE] = @"GRAPE",
    [ORANGE] = @"ORANGE",
    [PINEAPPLE] = @"PINEAPPLE",
    [LEMON] = @"LEMON",
    [All] = @"All"
};

and you can use it like:

NSLog(@"%@", FRUITString[APPLE]);
// OR
NSLog(@"%@", FRUITString[1]);

Output: APPLE

Based on your comment: if food values is "food":"1,2" I want to show "apple,grape"

NSString *foodValue = @"1,2";
NSArray *values = [foodValue componentsSeparatedByString:@","];
NSMutableArray *stringValues = [[NSMutableArray alloc] init];
for (NSString *value in values) {
    [stringValues addObject:FRUITString[[value integerValue]]];
}
NSLog(@"%@", [stringValues componentsJoinedByString:@","]);

APPLE,GRAPE

@micMacSolutions Glad it helped you. Please accept and upvote the answer. — TheTiger, Jul 23 '19 at 07:43

partha_devArch · Answer 2 · 2019-07-24T10:41:20.100

Define a NSDictionary with your required mapping, and fetch the value from your mapping dictionary:

NSDictionary *foodDict = @{
  @"1": @"apple",
  @"2": @"grape",
  @"3": @"orange",
  @"4": @"pineapple",
  @"5": @"lemon",
  @"6": @"all"
};

NSString *sample = [[array objectAtIndex:indexPath.row] objectForKey:@"food"];

NSString *sampleValue= [foodDict valueForKey:sample];

"sampleValue" is your required String Value needed. (Cast it to NSString if required)

score 0 · Answer 3 · answered Jul 23 '19 at 07:49

0

Change your code objectForKey@"" to valueForKey@""

NSString *sample = [[array objectAtIndex:indexPath.row] valueForKey:@"food"];

answered Jul 23 '19 at 07:49

Vinu Jacob

393
2
15

This is the wrong way to fetch the key. We should not use `valueForKey:`. `objectForKey:` is right way. – TheTiger Jul 23 '19 at 07:52
If we want to get the value inside the key "food" we need to use valueForKey: – Vinu Jacob Jul 23 '19 at 07:54
You really need to read [this](https://stackoverflow.com/questions/1062183/difference-between-objectforkey-and-valueforkey) then. Don't miss this. – TheTiger Jul 23 '19 at 07:56

I want to replace Json values to another string values in iOS

3 Answers3