UITableViewCell - DetailtextLabel来调用WebViewController

Question

我正在使用RSS应用程序，在我的上一个视图（tableView）中，我想使用cell.detailTextlabel来调用WebViewController并在Safari中打开相关文章。

其实我不知道这是不是最好的方法，但我需要这个“阅读更多”来打开整篇文章。

在我的第三部分（附图）的末尾，我插入了“Read More” - detailTextLabel.text = @“Read More” - 但我不知道如何链接到WebViewController并传递正确的URL。

在网上搜索，我发现这个例子在Safari中打开：

**WebViewController.h** 

#import <UIKit/UIKit.h>

@interface WebViewController : UIViewController

@property (strong, nonatomic) NSString *url;
@property (strong, nonatomic) UIWebView *webView;

- (id)initWithURL:(NSString *)postURL title:(NSString *)postTitle;

@end


**WebViewController.m**

    @implementation WebViewController
    @synthesize url = _url, webView = _webView;

 - (id)initWithURL:(NSString *)postURL title:(NSString *)postTitle
{
    self = [super init];
    if (self) {
        _url = postURL;
        self.title = postTitle;
    }
    return self;
}

- (void)viewDidLoad
{
    [super viewDidLoad];

    self.url = [self.url stringByTrimmingCharactersInSet:[NSCharacterSet       whitespaceAndNewlineCharacterSet]];
    NSURL *newURL = [NSURL URLWithString:[self.url  stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]];

// Do any additional setup after loading the view.
_webView = [[UIWebView alloc] initWithFrame:CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height)];
[self.view addSubview:self.webView];
[self.webView loadRequest:[NSURLRequest requestWithURL:newURL]];
}

- (void)viewDidAppear:(BOOL)animated {
}

 - (void)viewDidUnload
{
[super viewDidUnload];
// Release any retained subviews of the main view.
}

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
    return (interfaceOrientation == UIInterfaceOrientationPortrait);
}

@end

提前致谢。

Answer 1

您可以将自定义UIButton实例添加到tableview单元格，并根据您的结构使用indexPath.row或indexPath.section对其进行标记。在按钮操作上，获取发件人的标记并从dataSource数组中获取确切的URL，并使用该URL调用WenViewController。 您可以在单元格的contentView中添加具有所需框架的按钮。例如

CGRect cellFrame = cell.contentView.frame;
UIButton *readMore = [[UIButton alloc] 
                     initWithFrame:CGRectMake(cellFrame.origin.x+20, cellFrame.origin.y+cellFrame.size.height - yourButtonHeight -10, yourButtonWidth, yourButtonHeight)];
[readMore addTarget:self action:@selector(openWebView:) forControlEvents:UIControlEventTouchUpInside];
[readMore setTitle:@"Read More" forState:UIControlStateNormal];
[readMore setTag:indexPath.row];
[cell.contentView addSubview:readMore];
// Release readMore button if not using ARC

然后制作方法

-(void)openWebView:(UIButton*)sender{
      int tag = sender.tag;
      // Get URL from array using tag as index
}