iOS JSON Nsstring Parse

How to parse json data in nsstring?

you need to do like

dictionary = [NSJSONSerialization JSONObjectWithData:data options:0 error:nil];
     NSString *temp =  (NSString*)[dictionary valueForKey:@"token"];
      NSLog(@"temp %@", temp);

NSDictionary *data = [dictionary valueForKey:@"data"];
  NSString *tnamemp = (NSString*)[data valueForKey:@"name"];
    NSString *role = (NSString*)[data valueForKey:@"role"];

iOS JSON NSString Parse

The way to do it with iOS 5 is to use the NSJSONSerialization class. You will want to first convert your string to an NSData object, and call the class method JSONObjectWithData

NSData *jsonData = [myJsonString dataUsingEncoding:NSUTF8StringEncoding];
NSError *e;
NSDictionary *dict = [NSJSONSerialization JSONObjectWithData:jsonData options:nil error:&e];

Note that JSONObjectWithData will return either an NSDictionary or an NSArray, depending whether your JSON string represents an a dictionary or an array.

How to parse jsonstring in iOS using objective c?

if json is in respose data then

NSDictionary *jsonDic = [NSJSONSerialization JSONObjectWithData:request.responseData options:kNilOptions error:&err];

if json is in string then

NSDictionary *jsonDic = [NSJSONSerialization JSONObjectWithData:[str dataUsingEncoding:NSUTF8StringEncoding]; options:kNilOptions error:&err];

NSString* loginMethod= [jsonDic objectForKey:@"method"];

NSString* usename= [[jsonDic objectForKey:@"data"]objectForKey:@"username"];
NSString* password= [[jsonDic objectForKey:@"data"]objectForKey:@"password"];

How to parse this kind of json String in ios

It is simple.

According to your response it is confirmed that your response is a dictionary.and in your recipeDictionary there a array object associated with contacts key.

So take this value in array.Like this

 NSArray *yourContactsArray = [recipeDictionary valueForKey:@"contacts"];

Now this array contains the multiple objects which are in form of dictionary.I am printing all the values in name key to demonstrate you fetching.

for (NSDictionary *dict in yourContactsArray)
{
     NSString *name = [dict valueForKey:@"name"];
     NSLog(@"%@",name);
}

Converting an NSString of JSON Data to NSArray

// Your JSON data:
NSString *colorArray = @"[{ \"color\":\"Red\" },{ \"color\":\"Blue\" },{ \"color\":\"Yellow\"}]";
NSLog(@"colorArray=%@", colorArray);

// Convert to JSON object:
NSArray *jsonObject = [NSJSONSerialization JSONObjectWithData:[colorArray dataUsingEncoding:NSUTF8StringEncoding]
                                                      options:0 error:NULL];
NSLog(@"jsonObject=%@", jsonObject);

// Extract "color" values:
NSArray *tableData = [jsonObject valueForKey:@"color"];
NSLog(@"tableData=%@", tableData);

Output:


colorArray=[{ "color":"Red" },{ "color":"Blue" },{ "color":"Yellow"}]
jsonObject=(
        {
        color = Red;
    },
        {
        color = Blue;
    },
        {
        color = Yellow;
    }
)
tableData=(
    Red,
    Blue,
    Yellow
)

The last step uses the special feature of -[NSArray valueForKey:]
that returns an array containing the results of invoking valueForKey: using the key on each of the array's objects.

How to parse the data into Json Format in ios?

If you got you response in json string then try like below,

 NSError *jsonError;
 NSData *objectData = [responseString dataUsingEncoding:NSUTF8StringEncoding];
NSDictionary *json = [NSJSONSerialization JSONObjectWithData:objectData
                                  options:NSJSONReadingMutableContainers 
                                    error:&jsonError];

here responseString is final output json string that you have posted in question.

Then fetch data from json dictionary.

If this scenario will not work then take a look at NSXMLParser, you can refer Appcoda's tutorial.

How to Parse Json with NSJSONSerialization from NSString

NSJSONSerialization uses NSData not NSString.

Replace your line...

NSString *text = [[NSString alloc] initWithData...

With something like this...

NSDictionary *dictionary = [NSJSONSerialization JSONObjectWithData:data options:0 error:nil];

The dictionary object will now be a representation of the JSON.

This depends on the JSON being correct though :-)

Also, this has been asked hundreds of times before.

How to convert escaped JSON-string to NSString?

By default, Foundation will only parse JSON objects or arrays, but it can parse strings, numbers and booleans if you tell it to accept JSON fragments:

NSData *data = [@"\"Some text.\\nSome text.\\n\\t\\\"Some text in quotes.\\\"\""
    dataUsingEncoding:NSUTF8StringEncoding];

id result = [NSJSONSerialization JSONObjectWithData:data
                                            options:NSJSONReadingAllowFragments
                                              error:NULL];
NSLog(@"[result class] = %@", [result class]);
NSLog(@"result = %@", result);

Yields:

[result class] = __NSCFString
result = Some text.
Some text.
  "Some text in quotes."

This is actually one of the cases where passing error really helps. I had tried without passing NSJSONReadingAllowFragments and got a very clear error message:

Error Domain=NSCocoaErrorDomain Code=3840 "The operation couldn’t be completed. (Cocoa error 3840.)" (JSON text did not start with array or object and option to allow fragments not set.)

parse JSON string to NSDictionary into array of objects Objective C

Try this code to get value

NSMutableArray *res     = [NSJSONSerialization JSONObjectWithData:GETReply options:NSJSONReadingMutableLeaves|| NSJSONReadingMutableContainers error:nil];
NSLog(@"%@",res);
// get item id
NSLog(@"item-id :%@",[[res objectAtIndex:0] objectForKey:@"item_id"]);
NSLog(@"datetime %@",[[res objectAtIndex:0] objectForKey:@"datetime"]);
NSLog(@"main_url %@",[[res objectAtIndex:0] objectForKey:@"main_url"]);

or get all value from response

for (int i=0; i< res.count; i++){
    NSLog(@"item-id :%@",[[res objectAtIndex:i] objectForKey:@"item_id"]);
    NSLog(@"datetime %@",[[res objectAtIndex:i] objectForKey:@"datetime"]);
    NSLog(@"main_url %@",[[res objectAtIndex:i] objectForKey:@"main_url"]);
}