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objective-cjsonnsmutablearraynsarray

Getting object as singleArrayObject, how to convert in NSMutableArray?

in response, i am getting gas_cylinders key as single array object

"gas_cylinders":["[{\"quantity\":\"2\",\"name\":\"Medium Blue\",\"price\":\"100.0\",\"total_price\":\"200.0\"},{\"quantity\":\"3\",\"name\":\"Green\",\"price\":\"100.0\",\"total_price\":\"300.0\"},{\"quantity\":\"1\",\"name\":\"Dark Green\",\"price\":\"100.0\",\"total_price\":\"100.0\"}]"]

Note:- tripDictionary contain below data..

(lldb) po tripDictionary 
{
    "gas_cylinder_total" = 600;
    "gas_cylinders" =     (
        "[{\"quantity\":\"2\",\"name\":\"Medium Blue\",\"price\":\"100.0\",\"total_price\":\"200.0\"},{\"quantity\":\"3\",\"name\":\"Green\",\"price\":\"100.0\",\"total_price\":\"300.0\"},{\"quantity\":\"1\",\"name\":\"Dark Green\",\"price\":\"100.0\",\"total_price\":\"100.0\"}]"
    );
}

i am taking gas_cylinders like below way..

NSArray *arr = [tripDictionary valueForKey:@"gas_cylinders"];
if (arr && arr.count > 0) {
   NSLog(@"first obj = %@",arr[0]);
}

output of above NSLog like..

first obj = [{"quantity":"2","name":"Medium Blue","price":"100.0","total_price":"200.0"},{"quantity":"3","name":"Green","price":"100.0","total_price":"300.0"},{"quantity":"1","name":"Dark Green","price":"100.0","total_price":"100.0"}]

how can i get this object in NSMutableArray ?

Solution

  • The data is not what you think it is. The value of the gas_cylinders key is an array of JSON string.

    NSArray *cylinders = tripDictionary[@"gas_cylinders"];
NSString *firstCylinder = cylinders[0];

    At this point, firstCylinder is a JSON string. You need to parse that JSON string to get the desired array of dictionaries contained in the JSON string.