Restkit-如何在表格视图中显示json数据

Question

我已经使用rest套件0.20.3和xcode 5创建了一个应用程序。我在我的服务器上创建了2个对象。但我无法在tableview中显示数据。下面是我的表视图代码： PlayerViewController.m

#import "PlayerViewController.h" 
#import <RestKit/RestKit.h> 
#import "Player.h" 

@interface PlayerViewController() 

@end 

@implementation PlayerViewController 

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

- (void)viewDidLoad 
{ 
    [super viewDidLoad]; 

    UIRefreshControl *refreshControl = [UIRefreshControl new]; 
    [refreshControl addTarget:self action:@selector(loadPlayers) forControlEvents:UIControlEventValueChanged]; 
    self.refreshControl = refreshControl; 

    [self loadPlayers]; 
    [self.refreshControl beginRefreshing]; 

} 

-(void)loadPlayers{ 

    [[RKObjectManager sharedManager] getObjectsAtPath:@"/players.json" parameters:nil success:^(RKObjectRequestOperation *operation, RKMappingResult *mappingResult) { 
     [self.tableView reloadData]; 
     [self.refreshControl endRefreshing]; 
    } failure:^(RKObjectRequestOperation *operation, NSError *error) { 
     [self.refreshControl endRefreshing]; 
     UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:@"An Error Has Occurred" message:[error localizedDescription] delegate:nil cancelButtonTitle:@"OK" otherButtonTitles:nil]; 
     [alertView show]; 
    }];} 

- (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 1; 
} 

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section 
{ 
    // Return the number of rows in the section. 
    return players.count; 
} 

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath 
{ 
    static NSString *CellIdentifier = @"PlayerCell"; 
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier forIndexPath:indexPath]; 

    Player *player = [players objectAtIndex:indexPath.row]; 
    cell.textLabel.text = player.playerName; 

    return cell; 
} 

玩家阵列计数显示为0。我知道我在这里失去了一些东西，但似乎无法推测出来。 谢谢。

Answer 1

您需要将数据分配给您的播放器阵列：

[[RKObjectManager sharedManager] getObjectsAtPath:@"/players.json" 
             parameters:nil 
              success:^(RKObjectRequestOperation *operation, 
                RKMappingResult *mappingResult) { 
    self.players = mappingResult.array; // <-- doing the actual assignment 
    [self.tableView reloadData]; 
    [self.refreshControl endRefreshing]; 
} // ... the rest of your code 

这里假设你有你有正确的映射。