私はこのアプリに取り組んでいますが、どういうわけか、tableviewcontrollerに行が返されません。これが私のコードです:
#define kBgQueue dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0)
#define kStudentenURL [NSURL URLWithString:@"http://localhost/api/api.php"]
#import "MasterViewController.h"
#import "DetailViewController.h"
@interface MasterViewController () {
NSArray *_studenten; } @end
@implementation MasterViewController
- (void)awakeFromNib {
[super awakeFromNib]; }
- (void)viewDidLoad {
[super viewDidLoad]; // Do any additional setup after loading the view, typically from a nib.
// The hud will dispable all input on the view (use the higest view possible in the view hierarchy) HUD = [[MBProgressHUD alloc] initWithView:self.navigationController.view]; [self.navigationController.view addSubview:HUD]; // Regiser for HUD callbacks so we can remove it from the window at the right time HUD.delegate = self; // Show the HUD while the provided method executes in a new thread [HUD showWhileExecuting:@selector(getJsonDataFromServer) onTarget:self withObject:nil animated:YES]; }
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated. }
-(void)getJsonDataFromServer {
dispatch_async(kBgQueue, ^{
NSData* data = [NSData dataWithContentsOfURL:
kStudentenURL];
[self performSelectorOnMainThread:@selector(fetchedData:)
withObject:data waitUntilDone:YES];
}); }
- (void)fetchedData:(NSData *)responseData {
NSError* error;
NSDictionary *json = [NSJSONSerialization
JSONObjectWithData:responseData
options:kNilOptions
error:&error];
_studenten = [json objectForKey:@"studenten"];
NSLog(@"Studenten: %@", _studenten);
NSLog(@"%u", _studenten.count); }
#pragma mark - Table View
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
return 1; }
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
return _studenten.count; }
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"Cell" forIndexPath:indexPath];
NSDictionary *student = [_studenten objectAtIndex:0];
NSString *studentNaam = [student objectForKey:@"studentNaam"];
NSString *studentAchterNaam = [student objectForKey:@"studentAchterNaam"];
cell.textLabel.text = studentAchterNaam;
cell.detailTextLabel.text = studentNaam;
return cell; }
/* // 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; }
*/
/*- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
if ([[segue identifier] isEqualToString:@"showDetail"]) {
NSIndexPath *indexPath = [self.tableView indexPathForSelectedRow];
NSDate *object = _objects[indexPath.row];
[[segue destinationViewController] setDetailItem:object];
} }*/
@end
私のjsonが正しく入ってくることを知っています。はNSLog
私が尋ねたデータを返していますが、行を取得できないようです。誰かが私に手を差し伸べてもらえますか?tnx