Convert NSDictionary to NSString.

Sometime we need to convert the dictionary(received from server or database)

to the JSON string. We can use this simple function.

+ (NSString*) convertDictionaryToString:(NSMutableDictionary*) dict

{

    NSError* error;

    NSDictionary* tempDict = [dict copy]; // get Dictionary from mutable Dictionary

    //giving error as it takes dic, array,etc only. not custom object.

    NSData* jsonData = [NSJSONSerialization dataWithJSONObject:tempDict

                                                      options:NSJSONReadingMutableLeaves error:&error];

    NSString* nsJson=  [[NSString alloc] initWithData:jsonData

                                             encoding:NSUTF8StringEncoding];

    return nsJson;

}