獲取空UITable AFNetworking JSON解析

Question

我想解析JSON數據AFNetworking AFJSONRequestOperation。但由於某種原因，我得到一個空的UITable。

我設法做到了，沒有AFNetworking。

可能有人請看看我的代碼Google Drive

#import "AFNetworking.h" 


    #import "AFJSONRequestOperation.h" 

    @interface KKViewController() 

    @end 

@implementation KKViewController 

@synthesize movies = _movies, count = _count; 


- (id)initWithStyle:(UITableViewStyle)style 
{ 
    self = [super initWithStyle:style]; 
    if (self) { 
     // Custom initialization 
    } 
    return self; 
} 

- (void)viewDidLoad 
{ 
    [super viewDidLoad]; 

    self.movies = [[NSArray alloc] init]; 

    // get data from youtube 

NSURL *url = [[NSURL alloc] initWithString:@"http://gdata.youtube.com/feeds/api/playlists/PL0l3xlkh7UnvLdr0Zz3XZZuP2tENy_qaP?v=2&alt=jsonc&max-results=50"]; 

    NSURLRequest *request = [[NSURLRequest alloc] initWithURL:url]; 

    AFJSONRequestOperation *operation = [AFJSONRequestOperation JSONRequestOperationWithRequest:request success:^(NSURLRequest *request, NSHTTPURLResponse *response, id JSON) { 



     self.movies = [JSON valueForKeyPath:@"data.items.video"]; 

     // NSLog(@@, video) 

     // 


     self.count = [JSON valueForKeyPath:@"data.items.video.thumbnail"]; 
     [self.activityIndicatorView stopAnimating]; 
     [self.tableView setHidden:NO]; 
     [self.tableView reloadData]; 

    } failure:^(NSURLRequest *request, NSHTTPURLResponse *response, NSError *error, id JSON) { 
     NSLog(@"Request Failed with Error: %@, %@", error, error.userInfo); 
    }]; 

    [operation start]; 





    // Uncomment the following line to preserve selection between presentations. 
    // self.clearsSelectionOnViewWillAppear = NO; 

    // Uncomment the following line to display an Edit button in the navigation bar for this view controller. 
    // self.navigationItem.rightBarButtonItem = self.editButtonItem; 
} 

- (void)didReceiveMemoryWarning 
{ 
    [super didReceiveMemoryWarning]; 
    // Dispose of any resources that can be recreated. 
} 

#pragma mark - Table view data source 

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView 
{ 

    // Return the number of sections. 
    return 0; 
} 

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section 
{ 



    // Return the number of rows in the section. 

    if (self.movies && self.movies.count) { 
     return self.movies.count; 
    } else { 
     return 0; 
    } 


} 


- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { 
    static NSString *cellID = @"Cell Identifier"; 

    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:cellID]; 

    if (!cell) { 
     cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:cellID]; 
    } 

    NSDictionary *movie = [self.movies objectAtIndex:indexPath.row]; 


    NSDictionary *countt = [self.count objectAtIndex:indexPath.row]; 
    cell.textLabel.text = [movie objectForKey:@"title"]; 
    cell.detailTextLabel.text = [movie objectForKey:@"uploader"]; 

    NSURL *url = [[NSURL alloc] initWithString:[countt objectForKey:@"hqDefault"]]; 
    [cell.imageView setImageWithURL:url placeholderImage:[UIImage imageNamed:@"placeholder"]]; 

    return cell; 
} 




/* 
// Override to support conditional editing of the table view. 
- (BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath 
{ 
    // Return NO if you do not want the specified item to be editable. 
    return YES; 
} 
*/ 

/* 
// Override to support editing the table view. 
- (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath 
{ 
    if (editingStyle == UITableViewCellEditingStyleDelete) { 
     // Delete the row from the data source 
     [tableView deleteRowsAtIndexPaths:@[indexPath] withRowAnimation:UITableViewRowAnimationFade]; 
    } 
    else if (editingStyle == UITableViewCellEditingStyleInsert) { 
     // Create a new instance of the appropriate class, insert it into the array, and add a new row to the table view 
    } 
} 
*/ 

/* 
// Override to support rearranging the table view. 
- (void)tableView:(UITableView *)tableView moveRowAtIndexPath:(NSIndexPath *)fromIndexPath toIndexPath:(NSIndexPath *)toIndexPath 
{ 
} 
*/ 

/* 
// Override to support conditional rearranging of the table view. 
- (BOOL)tableView:(UITableView *)tableView canMoveRowAtIndexPath:(NSIndexPath *)indexPath 
{ 
    // Return NO if you do not want the item to be re-orderable. 
    return YES; 
} 
*/ 

#pragma mark - Table view delegate 

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath 
{ 
    // Navigation logic may go here. Create and push another view controller. 
    /* 
    <#DetailViewController#> *detailViewController = [[<#DetailViewController#> alloc] initWithNibName:@"<#Nib name#>" bundle:nil]; 
    // ... 
    // Pass the selected object to the new view controller. 
    [self.navigationController pushViewController:detailViewController animated:YES]; 
    */ 
} 

@end 


    [1]: https://docs.google.com/folder/d/0B1EPIKZI6a5sSzVWdXh6VU1POWs/edit?usp=sharing 

Answer 1

1. 你應該將你的viewDidLoad啓動碼viewWillAppear中

2. numberOfSectionInTableView應該返回1，而不是0