IOS: getting values in an array from dictionary - ios

Question

In my project i have an array which contains multiple dictionaries with some key values each. I want to get the all the value of "Link" key into an NSMutableArray.
the current array which contain dictionary is in the form of:
(
{
YoutubeVideo = {
description = "Cervical Spine Medial Branch Nerve Neurolysis neurosurgical animations";
link = "https://player.vimeo.com/video/26186155";
title = "Cervical Spine Medial Branch Nerve Neurolysis neurosurgical animations";
};
},
{
YoutubeVideo = {
description = "What is endoscopic brain surgery";
link = "https://player.vimeo.com/video/16144037";
title = "What is endoscopic brain surgery";
};
},
{
YoutubeVideo = {
description = "Cervical Spine Medial Branch Nerve Block Injection pain management";
link = "https://player.vimeo.com/video/26186167";
title = "Cervical Spine Medial Branch Nerve Block Injection pain management";
};
},
{
YoutubeVideo = {
description = "Seguiremos - Hospital Sant Joan de D\U00e9u y Macaco";
link = "https://player.vimeo.com/video/54275902";
title = "Seguiremos - Hospital Sant Joan de D\U00e9u y Macaco";
};
},
{
YoutubeVideo = {
description = "Basic Shoulder Arthroscopy in Orthopaedics";
link = "https://www.youtube.com/embed/ywBVWIzGxtw";
title = "Basic Shoulder Arthroscopy in Orthopaedics";
};
}
i want to get all the values of link into a single array.
Currently the code i use which gives the following output is:
-(void)videolisting
{
NSString *post = #"api_key=bf45c093e542f057c123ae7d6";
NSData *postData = [post dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:YES];
NSString *postLength = [NSString stringWithFormat:#"%lu", (unsigned long)[postData length]];
NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init];
[request setURL:[NSURL URLWithString:#"http://hChe/api/video"]];
[request setHTTPMethod:#"POST"];
[request setValue:postLength forHTTPHeaderField:#"Content-Length"];
[request setValue:#"application/x-www-form-urlencoded" forHTTPHeaderField:#"Content-Type"];
[request setHTTPBody:postData];
NSURLResponse *response;
NSError *err;
NSData *responseData = [NSURLConnection sendSynchronousRequest:request returningResponse:&response error:&err];
NSString *str=[[NSString alloc]initWithData:responseData encoding:NSUTF8StringEncoding];
//NSLog(#"str : %#",str);
NSDictionary *dict6 = [self cleanJsonToObject:responseData];
//NSLog(#"str : %#",dict6);
vidnamearray = [dict6 objectForKey:#"video"];
NSLog(#" Required Dir: %#",vidnamearray);
}

Answer 1

Try below solution
NSMutableArray *subArray=[[NSMutableArray alloc]init];
for(NSDictionary *dict in vidnamearray)
{
NSDictionary *subDict=[dict valueForKey:#"YoutubeVideo"];
[subArray addObject:[subDict valueForKey:#"link"]];
}
subArray will get all the values in the link key..!
Hope it helps you.....!

Answer 2

Try this
yourArr.valueForKeyPath("YoutubeVideo.link")
This will give the array containing all links.