我正在尝试从WebListViewController推送到WebPageViewController,因此当按下某个单元格时,它将推送到UIWebView来显示与之关联的网络文章。但我只是无法正常工作-

WebListViewController.m

#import "WebListViewController.h"
#import "Feed.h"

@interface WebListViewController ()
@property (strong, nonatomic) NSArray *headlinesArray;
@end

@implementation WebListViewController
@synthesize tableView = _tableView;
@synthesize headlinesArray;

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{

    static NSString *CellIdentifier = @"standardCell";
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];

    Feed *feedLocal = [headlinesArray objectAtIndex:indexPath.row];
    NSString *headlineText = [NSString stringWithFormat:@"%@", feedLocal.headline];
    cell.textLabel.text = headlineText;

    return cell;
}


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

    WebPageViewController *wpvc = (WebPageViewController *) [segue destinationViewController];
    wpvc.buttonNumber = _buttonNumber;
    Feed *feedLocal = [headlinesArray objectAtIndex:indexPath.row];
    NSString *stringWeb = [NSString stringWithFormat:@"%@", feedLocal.links.web.href];
    wpvc.stringWeb = stringWeb;
}

}

WebPageViewController.h
@interface WebPageViewController : UIViewController <UIWebViewDelegate>
@property (nonatomic) int buttonNumber;
@property (strong, nonatomic) IBOutlet UIWebView *webView;
@property (strong, nonatomic) NSString *stringWeb;
@end

WebPageViewController.m
#import "WebPageViewController.h"
#import "Feed.h"

@interface WebPageViewController ()
@property (strong, nonatomic) NSArray *headlinesArray;
@end
@implementation WebPageViewController
@synthesize stringWeb;
@synthesize headlinesArray;

-(void)viewWillAppear:(BOOL)animated {
    NSURL *url = [NSURL URLWithString:stringWeb];
    [self.webView loadRequest:[NSURLRequest requestWithURL:url]];
}

-(void)viewWillDisappear:(BOOL)animated {
    [self.webView stopLoading];
}

JSON响应
{
    "timestamp": "2013-05-04T16:38:48Z",
    "feed": [{
        "headline": "Text of headline",
        "links": {
            "web": {
                "href": "http://website.com/article"
            },

我今天刚刚添加了<UIWebViewDelegate>部分,因为我认为这可能正在发生,但仍然无法正常工作。我知道cellForRowAtIndexPath是正确的,因为我在控制台中看到了所有正确的数据。当我运行程序时,它似乎甚至都没有到达WebPageViewController,所选单元格保持突出显示状态。我无法弄清楚问题是什么,如果它是prepareForSegue或需要添加didSelectRowAtIndexPath或其他内容。

(我正在从API中提取JSON数据。)

任何建议都将非常有帮助,我将添加所需的任何代码,谢谢!

最佳答案

我猜standardCell是您在情节提要中定义为原型单元的单元吗?如果是这样,请确保右键单击该单元格,然后将“选择”属性拖动到您希望该单元格推到导航控制器上的视图控制器。

另外,请确保第一个视图已嵌入导航控制器中。如果不是,请在情节提要中选择它,然后转到“编辑器”菜单,选择“嵌入”,然后选择“导航控制器”。

10-07 16:54