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”。