從JSON獲取數據到表格視圖

Question

我有一個來自http://vmg.hdvietpro.com/ztv/home的JSON數據。我想在獲取text1，thumbnailImage值後，單擊getData按鈕以獲取JSON中的text1，thumbnailImage（NSString）值。這是我的代碼，點擊按鈕後沒有任何事情發生。感謝幫助。

@interface ViewController() 
{ 
    NSMutableData *webData; 
    NSURLConnection *connection; 
    NSMutableArray *moviesArray; 

} 
@end 

@implementation ViewController 

- (void)viewDidLoad 
{ 
    [super viewDidLoad]; 
    // Do any additional setup after loading the view, typically from a nib. 
    [[self myTableView]setDelegate:self]; 
    [[self myTableView]setDataSource:self]; 
    moviesArray=[[NSMutableArray alloc]init]; 
} 

- (void)didReceiveMemoryWarning 
{ 
    [super didReceiveMemoryWarning]; 
    // Dispose of any resources that can be recreated. 
} 
-(void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response{ 
    [webData setLength:0]; 
} 
-(void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data{ 
    [webData appendData:data]; 
} 
-(void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error{ 
    NSLog(@"Fail"); 
} 
-(void)connectionDidFinishLoading:(NSURLConnection *)connection{ 
    NSDictionary *allDataDictionary=[NSJSONSerialization JSONObjectWithData:webData options:0 error:nil]; 
    NSDictionary *response=[allDataDictionary objectForKey:@"response"]; 
    NSDictionary *hotProgram=[response objectForKey:@"hot_program"]; 
           NSArray *itemPageHot=[hotProgram objectForKey:@"page"]; 
    for (NSDictionary*dic in itemPageHot) { 
     NSString *text1=[dic objectForKey:@"text1"]; 
     [moviesArray addObject:text1]; 


    } 
    [[self myTableView]reloadData]; 
} 
- (IBAction)getData:(id)sender { 
    NSURL *url=[NSURL URLWithString:@"http://vmg.hdvietpro.com/ztv/home"]; 
    NSURLRequest *request=[NSURLRequest requestWithURL:url]; 
    connection = [NSURLConnection connectionWithRequest:request delegate:self]; 
    if(connection){ 
     webData =[[NSMutableData alloc]init]; 
     NSLog(@"ket noi thanh cong"); 
    } 
} 
-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{ 
    return [moviesArray count]; 
} 
-(NSInteger)numberOfSectionsInTableView:(UITableView *)tableView{ 
    return 1; 
} 
-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{ 
    static NSString*CellIndentifier=@"Cell"; 
    UITableViewCell *cell=[tableView dequeueReusableCellWithIdentifier:CellIndentifier]; 

    if(!cell){ 
     cell=[[UITableViewCell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIndentifier]; 
    } 
    cell.textLabel.text=[moviesArray objectAtIndex:indexPath.row]; 
    return cell; 
} 

Answer 1

你沒有正確地遍歷字典。關鍵page是關鍵itemPage孩子所以這應該工作

NSArray *itemPageHot = [[hotProgram objectForKey:@"itemPage"] objectForKey:@"page"];

我建議你下載一個JSON督察像這樣的問題。應用商店中的VisualJSON就是我使用的。