DetailViewController無法設置插座？

Question

嗨，我遇到了一個問題，其中DetailViewController不想設置UILabel插座，這是一個Master Detail應用程序模板，當我按一個單元格時，會發生以下情況

 - (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
if ([[segue identifier] isEqualToString:@"showDetail"]) {
    NSIndexPath *indexPath = [self.tableView indexPathForSelectedRow];

    // here it accordingly sets the ObjectItem to my custom object.

    Torrent *object = _torrents[indexPath.row];
    [[segue destinationViewController] setObjectItem:object];
   }
}

這是我在DetailViewController viewDidLoad中調用的方法

- (void)configureView
{
// Since i set the objectItem earlier it works, it set the outlets
if (self.objectItem) {

    theTitle.text = self.objectItem.MovieTitleClean;
    genre.text = self.objectItem.Genre;
    size.text = self.objectItem.Size;
    quality.text = self.objectItem.Quality;
    rating.text = self.objectItem.MovieRating;
    year.text = self.objectItem.MovieYear;
}

if (self.detailObject) {

    ShortDescription.lineBreakMode = NSLineBreakByWordWrapping;

    self.details = [_detailObject objectAtIndex:0];

    NSLog(@"Called"); // this is called meaning it should set the outlets but it doesn't...

resolution.text = self.details.Resolution;
framerate.text = self.details.FrameRate;
language.text = self.details.Language;
peersSeeds.text = [NSString stringWithFormat:@"%@/%@",self.details.TorrentPeers,self.details.TorrentSeeds];
downloaded.text = self.details.Downloaded;
ShortDescription.text = self.details.ShortDescription;

}

在DetailViewController viewDidLoad中，我調用configureView將UILabel出口設置為我的自定義objectItem，並且效果很好，但是當我從委托接收新的detailObject並根據該新的detailObject設置其他UILabel時，似乎根本沒有設置任何東西（請注意）視圖已經加載，並且NSlog顯示我調用configureView，這意味着它應該設置插座，我必須等待15秒鍾，並且它會自動設置所有插座，沒有人知道為什么視圖不響應嗎？ 首先。 謝謝

編輯：這是.h文件

#import <UIKit/UIKit.h>

#import "TorrentDetail.h"

#import "YifyAPI.h"
#import "Torrent.h"

@interface DetailViewController : UIViewController <YifyAPIDelegate> {

IBOutlet UILabel *theTitle;
IBOutlet UILabel *genre;
IBOutlet UILabel *size;
IBOutlet UILabel *quality;
IBOutlet UILabel *rating;
IBOutlet UILabel *year;

IBOutlet UILabel *resolution;
IBOutlet UILabel *framerate;
IBOutlet UILabel *language;
IBOutlet UILabel *peersSeeds;
IBOutlet UILabel *downloaded;

IBOutlet UILabel *ShortDescription;

IBOutlet UIImageView *LargeImageCover;
}

@property (strong, nonatomic) Torrent *objectItem;

@property (strong, nonatomic) TorrentDetail *detailObject;

@end

Answer 1

這是正常的，因為在加載控制器時未設置該對象，而是在加載該對象以解決此問題時可以這樣做，在detailControll中，您可以這樣實現對象的設置器：

-(void)setObjectItem:(Torrent *)object{

   if(_objectItem != object){
       _objectItem = object;
   }

    theTitle.text = self.objectItem.MovieTitleClean;
     genre.text = self.objectItem.Genre;
     size.text = self.objectItem.Size;
     quality.text = self.objectItem.Quality;
     rating.text = self.objectItem.MovieRating;
     year.text = self.objectItem.MovieYear;

}

-(void)setDetailObject:(NSArray *) detailObject{

   if(_detailObject != detailObject){
       _detailObject = detailObject;
   }

    ShortDescription.lineBreakMode = NSLineBreakByWordWrapping;

    self.details = [_detailObject objectAtIndex:0];

    NSLog(@"Called"); // this is called meaning it should set the outlets but it doesn't...

     resolution.text = self.details.Resolution;
     framerate.text = self.details.FrameRate;
     language.text = self.details.Language;
     peersSeeds.text = [NSString stringWithFormat:@"%@/%@",self.details.TorrentPeers,self.details.TorrentSeeds];
     downloaded.text = self.details.Downloaded;
     ShortDescription.text = self.details.ShortDescription;

    }

Answer 2

要在從情節提要加載的視圖控制器中配置屬性，請不要依賴viewDidLoad：來初始化屬性。 此處和文檔中的此處都說要覆蓋awakeFromNib以進行配置。

// In your Detail View Controller
- (void) awakeFromNib
{
    [self configureView];
    // Do any other configuration here
}