Ios Restkit-如何在表视图中显示json数据
我已经使用RESTKit0.20.3和xcode 5创建了一个应用程序。我已经在我的服务器上创建了2个对象。但是我无法在tableview中显示数据。下面是我的表视图的代码: playervewcontroller.mIos Restkit-如何在表视图中显示json数据,ios,json,uitableview,restkit,restkit-0.20,Ios,Json,Uitableview,Restkit,Restkit 0.20,我已经使用RESTKit0.20.3和xcode 5创建了一个应用程序。我已经在我的服务器上创建了2个对象。但是我无法在tableview中显示数据。下面是我的表视图的代码: playervewcontroller.m #import "PlayerViewController.h" #import <RestKit/RestKit.h> #import "Player.h" @interface PlayerViewController () @end @implementa
#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;
}
#导入“playervewcontroller.h”
#进口
#导入“Player.h”
@接口PlayerViewController()
@结束
@PlayerViewController的实现
-(id)initWithStyle:(UITableViewStyle)样式
{
self=[super initWithStyle:style];
如果(自我){
//自定义初始化
}
回归自我;
}
-(无效)viewDidLoad
{
[超级视图下载];
UIRefreshControl*refreshControl=[UIRefreshControl新建];
[refreshControl addTarget:self action:@selector(LoadPlayer)for ControlEvents:UIControlEventValueChanged];
self.refreshControl=refreshControl;
[自选玩家];
[自我刷新控制开始刷新];
}
-(无效)装载机{
[[RKObjectManager sharedManager]getObjectsAtPath:@”/players.json“参数:无成功:^(RKObjectRequestOperation*操作,RKMappingResult*映射结果){
[self.tableView重载数据];
[自我刷新控制结束刷新];
}失败:^(RKObjectRequestOperation*操作,NSError*错误){
[自我刷新控制结束刷新];
UIAlertView*alertView=[[UIAlertView alloc]initWithTitle:@“发生错误”消息:[错误本地化描述]委托:nil cancelButtonTitle:@“确定”其他ButtonTitles:nil];
[警报视图显示];
}];}
-(无效)未收到记忆警告
{
[超级记忆警告];
//处置所有可以重新创建的资源。
}
#pragma标记-表视图数据源
-(NSInteger)表格视图中的节数:(UITableView*)表格视图
{
//返回节数。
返回1;
}
-(NSInteger)表视图:(UITableView*)表视图行数节:(NSInteger)节
{
//返回节中的行数。
返回players.count;
}
-(UITableViewCell*)tableView:(UITableView*)tableView cellForRowAtIndexPath:(NSIndexPath*)indexPath
{
静态NSString*CellIdentifier=@“PlayerCell”;
UITableViewCell*单元格=[tableView dequeueReusableCellWithIdentifier:CellIdentifier forIndexPath:indexPath];
Player*Player=[players-objectAtIndex:indexPath.row];
cell.textlab.text=player.playerName;
返回单元;
}
玩家数组计数显示为0。我知道我遗漏了一些东西,但我似乎无法理解。
谢谢。您需要将数据分配给您的玩家阵列:
[[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
[[RKObjectManager sharedManager]getObjectsAtPath:@”/players.json
参数:零
成功:^(RKObjectRequestOperation*操作,
RKMappingResult*映射结果){
self.players=mappingResult.array;//您将刚下载的数据分配到数组players
?我不知道如何使用我收到的2个players对象设置数组。请告诉我怎么做。这取决于数据来自服务器的格式。数据是json格式。那么@Firo的答案可能是:布莱:干得好!幸运的汉克斯先生!它成功了。事实上,我之前创建了一个NSMutableArray,所以它在self.players=mappingResult.array行中不起作用;所以我将它改为NSArray,它成功了……愚蠢的错误。但是无论如何,谢谢你!如果你想保留它一个NSMutableArray
(无论出于什么原因)只需执行:self.players=[mappingResult.array mutableCopy];
另外,很高兴它成功了!