afnetworking get json data out from response

Question

I am trying to extract data(just a string) from request and set it to the NSString. I tried it in many way but it is not working. If anyone can point out my mistake, it will be very helpful for me.

json data

{
    "status": 1,
    "key": "1e39248f4a5e05153dc376a"
}

My code

NSString *key;
    AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];

    NSDictionary *params = @ {@"app_token" :APP_TOKEN};

    [manager POST:GET_USER_KEY_URL parameters:params success:^(AFHTTPRequestOperation *operation, id responseObject) {
        NSDictionary* response = (NSDictionary*) responseObject;
        key=[response valueForKey:@"key"];
        [[NSUserDefaults standardUserDefaults]setValue:(key) forKey:USER_KEY];
        NSLog(@"NEW KEY Request: %@", key);
    } failure:^(AFHTTPRequestOperation *operation, NSError *error) {
        NSLog(@"NEW KEY Request error: %@", error);
    }];

Just want to assign response "key" data and store it on the NSString *key;

Thank you in advance.

for this line key=[response valueForKey:@"key"]; Variable is not assignable (missing __block type specifier) — gamal
– gamal, Commented Apr 24, 2015 at 11:36
Are you sure you get that JSON back ? What is the content of response or responseObject? — Miknash
– Miknash, Commented Apr 24, 2015 at 11:38
can you try objectForKey instead of valueForKey? and I am not sure what do you mean by 'without that line log print data'. When you log response you get that JSON from above? — Miknash
– Miknash, Commented Apr 24, 2015 at 11:44

Community · Accepted Answer · 2017-05-23 11:44:30Z

3

You have declared the variable key outside of the block. You need to add __block infront of NSString *key;

To assign a variable outside a block you have to remember the __block specifier.

Related question: Assign a variable inside a Block to a variable outside a Block

edited May 23, 2017 at 11:44

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answered Apr 24, 2015 at 12:05

Fogh

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