这是我的第一个应用程序,基本上,这部分包括将数据从UItableView传递到第二个View Controll。我设法学会了如何从简单的 NSarray(也在 UITable 中)传递数据,但我的目标是从 NSDictionary 传递值。一切都设置好了,但是我不知道如何正确编写PrepareForSegue方法。应用将运行,但"详细信息视图"上的标签保持为空。到目前为止我得到了什么:
@implementation TableViewController
- (void)viewDidLoad {
[super viewDidLoad];
_citySpots = @{@"Bars" : @[@"Hurricane", @"Black Swan", @"Texas"],
@"Clubs" : @[@"Electric Wizard", @"Offspring", @"The Tunnel"],
@"Restaurants" : @[@"Nando's", @"1/2 Burguer", @"Satellite"],
};
_sectionTitles = [[_citySpots allKeys] sortedArrayUsingSelector:@selector(localizedCaseInsensitiveCompare:)];
}
准备方法:
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
if ([segue.identifier isEqualToString:@"spotsDetail"]) {
NSIndexPath *indexPath = [self.tableView indexPathForSelectedRow];
DetailViewController *destViewController = segue.destinationViewController;
NSString *sectionTitle = [_sectionTitles objectAtIndex:indexPath.section];
NSArray *citySpots = [_citySpots objectForKey:sectionTitle];
destViewController.receiver = [citySpots objectAtIndex:indexPath.row];
}
}
和接收器(标头):
#import <UIKit/UIKit.h>
#import "TableViewController.h"
@interface DetailViewController : UIViewController
@property (weak, nonatomic) IBOutlet UILabel *receiver;
@property (nonatomic, strong) NSString *spot;
@end
主要:
#import "DetailViewController.h"
@interface DetailViewController ()
@end
@implementation DetailViewController
- (void)viewDidLoad {
[super viewDidLoad];
_receiver.text =_spot;
}
有人可以帮助我吗?谢谢
尝试使用二传手:
[destViewController setReceiver:[citySpots objectAtIndex:indexPath.row]];
[destViewController setSpot:[citySpots objectAtIndex:indexPath.row]];