如何從NSDictionary中檢索值？

Question

我對此很陌生。 我已經從網站解析10個值到一個tableview並鏈接到一個詳細視圖控制器。 如何在單擊每個單元格時顯示個別值？

• （無效）viewDidLoad中 {

  [[自的tableView] setDelegate：自]; [[self tableView] setDataSource：self]; array = [[NSMutableArray alloc] init];

  [array removeAllObjects];

  NSURL * url = [NSURL URLWithString：@「https://itunes.apple.com/us/rss/topalbums/limit=10/json」]; NSURLRequest * request = [NSURLRequest requestWithURL：url];

  connection = [NSURLConnection connectionWithRequest：request delegate：self];

  if（connection）webData = [[NSMutableData alloc] init]; }

- （無效）connectionDidFinishLoading：（NSURLConnection的*）連接{ 的NSDictionary * allDataDictionary = [NSJSONSerialization JSONObjectWithData：WEBDATA選項：0錯誤：無]; NSDictionary * feed = [allDataDictionary objectForKey：@「feed」]; NSArray * arrayOfEntry = [feed objectForKey：@「entry」];

for (NSDictionary *diction in arrayOfEntry){ 
    NSDictionary *title = [diction objectForKey:@"title"]; 
    NSString *label = [title objectForKey:@"label"]; 

    [array addObject:label]; 


} 
[[self tableView] reloadData]; 

}

Answer 1

JSON數據將是NSMutableArray格式。

NSMutableArray *allDataDictionary = [NSJSONSerialization JSONObjectWithData:webData options:0 error:nil]; 

int i=0; 
for (i=0;i<[allDataDictionary count];i++) { 
    NSLog("value is %@", [NSString stringWithFormat:@"%@", [[allDataDictionary objectAtIndex:i] objectForKey:@"yourKey"]];) 
}