Question

我已在my.h文件@property (nonatomic, copy) NSDictionary *newsArticle;上声明在我。我有方法：

- (IBAction)synopsis:(id)sender {
    NSString *urlString = [NSString stringWithFormat:@"http://api.themoviedb.org/3/movie/%@?api_key=34eb86f3b94de2676e8d3007b5ce1993",movieid];
    dispatch_async(kBgQueue, ^{
        NSURL *url = [NSURL URLWithString:urlString];
        NSData* data = [NSData dataWithContentsOfURL:url];
        [self performSelectorOnMainThread:@selector(fetcheMovie:)withObject:data waitUntilDone:NO];
    });
}

- (void)fetcheMovie:(NSData *)responseData {
    NSError* error;

    NSDictionary* json = [NSJSONSerialization JSONObjectWithData:responseData  options:kNilOptions error:&error];
    newsArticle= [NSJSONSerialization JSONObjectWithData:responseData  options:kNilOptions error:&error];
    NSLog(@"data1 = %@",newsArticle);
}

- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender{
    NSLog(@"data2 = %@",newsArticle);
    if ([[segue identifier] isEqualToString:@"web"]){
        WebViewController *vc = [segue destinationViewController];
        vc.imdbnumber=@"tt0105236rodrigo";
    }
}

在fetcheMovie方法上，我可以得到newsArticle的值但是我不能在prepareForSegue方法上做同样的事情。

要访问这些值，我需要做什么？我需要访问值以传递到下一个视图谢谢罗德里戈

Answer 1

您应该使用- (void)fetcheMovie:(NSData *)responseData或想要推送下一个视图控制器的方法调用以下内容：

[self performSegueWithIdentifier:@"SegueIdentifier" sender:newsArticle];

在您的- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender中，发件人将成为performSegue

中的新闻文章参数

修改

- (void)fetcheMovie:(NSData *)responseData { NSError* error; NSDictionary* json = [NSJSONSerialization JSONObjectWithData:responseData options:kNilOptions error:&error]; [self performSegueWithIdentifier:@"SegueIdentifier" sender:json]; } - (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender { NSDictionary *jsonSendetAsParamInPerformSegue = (NSDictionary*)sender; newsArticle= [NSJSONSerialization JSONObjectWithData:jsonSendetAsParamInPerformSegue options:kNilOptions error:&error]; WebViewController *vc = [segue destinationViewController]; vc.viewControllerProperty = newsArticle; }

您必须相应地更改目标视图控制器的属性。您可以根据需要更改变量名称。

准备在ios上发布问题

1 个答案: