Accessing an array with nested objects and displaying keys values - ios

Question

I have this data set here: https://gist.github.com/ryancoughlin/8043604 - If you see tide.tideSummary it contains an array but inside, it contains multiple dictionaries. I am trying access and display tide.tideSummary.date.pretty and display (all 33 of them) in some type of table (but that I have working with dummy data).
I was going through a somewhat similar question here: Keypath for first element in embedded NSArray
Having some trouble finding a solution to access those nested values. Been through plenty of tutorials and posts here on StackOverflow that deal with very basic JSON strings and those work great for me.
UPDATE:
Came across this question: Parsing nested JSON objects with JSON Framework for Objective-C
In my case, I have the following:
NSArray *prettyDate = [[tide objectForKey:#"tideSummary"] valueForKey:#"date"];
prettyDate prints this from NSLog
Pretty date array: (
{
epoch = 1388388109;
hour = 02;
mday = 30;
min = 21;
mon = 12;
pretty = "2:21 AM EST on December 30, 2013";
tzname = "America/New_York";
year = 2013;
},
{
epoch = 1388397506;
hour = 04;
mday = 30;
min = 58;
mon = 12;
pretty = "4:58 AM EST on December 30, 2013";
tzname = "America/New_York";
year = 2013;
},
{
epoch = 1388405656;
hour = 07;
mday = 30;
min = 14;
mon = 12;
pretty = "7:14 AM EST on December 30, 2013";
tzname = "America/New_York";
year = 2013;
}
Then I would be able to loop through each, grab the object and display?
Would I do something like:
Grab parent item tideSummary - array
Grab the item above and store date - dictionary
Access pretty via objectForKey
I have this initWithDict
-(id)initWithDict:(NSDictionary *)json {
self = [super init];
if(self) {
NSDictionary *tide = [json valueForKeyPath:#"tide"];
NSArray *arrOfTideSummaryStats = [json valueForKeyPath:#"tide.tideSummaryStats"];
NSDictionary *dctOfTideSummaryStats = [arrOfTideSummaryStats objectAtIndex:0];
NSArray *arrOfTideSummary = [json valueForKeyPath:#"tide.tideSummary"];
// Loop through the date then...
// Loop and grab 'pretty'
// The "first" is the from the example link in my question above. Experimental oonly
id pretty = [arrOfTideSummary valueForKeyPath: #"#first.tideSummary.date.pretty"];
// This all works below
self.maxheight = [NSString stringWithFormat:#"%#", [dctOfTideSummaryStats valueForKey: #"maxheight"]];
self.minheight = [NSString stringWithFormat:#"%#", [dctOfTideSummaryStats valueForKey: #"minheight"]];
/*============================================================*/
NSArray *arrOfTideInfo = [json valueForKeyPath:#"tide.tideInfo"];
NSDictionary *dctOfTideInfo = [arrOfTideInfo objectAtIndex:0];
self.tideSite = [dctOfTideInfo valueForKey:#"tideSite"];
}
return self;
}
Does anyone have any examples or a direction to steer me in? Would love a resource or question to work off of.

Answer 1

-(void)parseJson:(id)json{
NSDictionary *tide = [json objectForKey:#"tide"];
NSArray *tideSummary = [tide objectForKey:#"tideSummary"];
for (int i = 0; i < tideSummary.count; i++) {
NSDictionary *eachTideSummary = [tideSummary objectAtIndex:i];
NSDictionary *dateDic = [eachTideSummary objectForKey:#"date"];
NSDictionary *utcdateDic = [eachTideSummary objectForKey:#"utcdate"];
NSLog(#"Preety from date dictionary: %#", [dateDic objectForKey:#"pretty"]);
NSLog(#"Preety from utcdate dictionary: %#", [utcdateDic objectForKey:#"pretty"]);
}
}

Answer 2

You can take a look at Initialize NSArray with data from NSdictionary as I have already answered this
Hope this helps.

Answer 3

If I'm understanding what you are trying to do, you should be able to replace this part:
// Loop through the date then...
// Loop and grab 'pretty'
with something like:
for (NSDictionary *tideSummary in arrOfTideSummary) {
NSDictionary *date = [tideSummary valueForKey:#"date"];
NSLog(#"Pretty date: %#", [date valueForKey:#"pretty"]);
}
If you want the date values in a table of some sort, then you could store them into a new array or some other data structure and then create a table view that uses that as its data source.

Answer 4

I have below data on JSON link...
{
"results":[
{
"address_components": [
{
"long_name": "Satadhar",
"short_name": "Satadhar",
"types":[
"point_of_interest",
"establishment"
]
} ]
]
I fetched data through ASIHTTPREQUEST so the code is below given
-(void)requestFinished:(ASIHTTPRequest *)request {
NSError *err;
NSData *data=[request responseData];
NSDictionary *dict = [NSJSONSerialization JSONObjectWithData:data options:kNilOptions error:&err];
arr=[[dict valueForKey:#"results"]valueForKey:#"address_components"]; //to fetch the data till inside Starting point i.e address_component
_arrTable=[[NSMutableArray alloc]init]; //take a array to store the data of the index 0 [index 0 store the whole data that is start from [array] ]
_arrTable =[arr objectAtIndex:0]; //get the data of 0th index
NSLog(#" whole data%#",_arrTable);//print it u will get the idea
NSLog(#" my %#",[[arr objectAtIndex:0] valueForKey:#"long_name"]);
NSLog(#" my %#",[[arr objectAtIndex:0] valueForKey:#"short_name"]);
[self.tblview reloadData];
}