Question

项目类型：masterview应用程序
组件第一个视图：Tableview
第二个视图：webview我想要的是在这样一种技术中导航：当用户点击一个单元格时，它应该得到href属性并在下一个webview中打开，它链接到的页面...而不仅仅是href属性

建议
谢谢

#import "MasterViewController.h"
#import "TFHpple.h"
#import "TFHppleElement.h"




#import "Preface.h"
#import "Chapters.h"
#import "Index.h"



#import "DetailViewController.h"

@interface MasterViewController ()
{
    NSMutableArray * preface;
    NSMutableArray * chapters;
    NSMutableArray * index;
}

@end


@implementation MasterViewController

- (void) loadChapters
{

    ///// capturing the link /////
    /*
     NSURL pointer to store the file url
     */

    NSURL * chapter_url = [NSURL fileURLWithPath:[[NSBundle mainBundle] pathForResource:@"test/mainpage" ofType:@"html"] isDirectory:NO];


    NSData * chapter_data = [NSData dataWithContentsOfURL:chapter_url];


    ///// passing to TFHpple /////


    TFHpple * chapter_parser = [TFHpple hppleWithHTMLData:chapter_data];



    ///// String for XPath Query /////

    NSString * chapter_query_string = @"//div[@class='cD']/ul[2]/li/a";
    NSArray * chapter_nodes = [chapter_parser searchWithXPathQuery:chapter_query_string];

    ///// Array for initializing elements of preface/////

    NSMutableArray * chapter_contents = [[NSMutableArray alloc]initWithCapacity:0];

    ///// Now  looping to fetch contents /////

    for (TFHppleElement * element in chapter_nodes) {

        Chapters * chapter_ptr =[[Chapters alloc]init];

        [chapter_contents addObject:chapter_ptr];

        chapter_ptr.chapter_title = [[element firstChild]content];

        chapter_ptr.chapter_url = [element objectForKey:@"href"];


    }

    chapters= chapter_contents;
    [self.tableView reloadData];

}

viewdidload

- (void)viewDidLoad
{
    [super viewDidLoad];
    [self loadPreface];
    [self loadChapters]; 
    [self loadIndex];
    // Do any additional setup after loading the view, typically from a nib.

   }

-(NSString*)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section {
    switch (section) {
        case 0:
            return @"Table of Contents";
            break;
        case 1:
            return @"Chapters";
            break;
        case 3:
            return @"Index";
            break;


    }
    return nil;
}

方法在部分中返回no行

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
    switch (section) {
        case 0:
            return preface.count;
            break;
        case 1:
            return chapters.count;
            break;
        case 2:
            return index.count;
            break;

    }
    return 0;
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    static NSString *CellIdentifier = @"cell";

    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
    if (cell == nil)
    {
        cell = [[UITableViewCell alloc]initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:CellIdentifier];
        cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;
    }

     switch (indexPath.section) {
case 0:
    {

        Preface *preface_access = [preface objectAtIndex:indexPath.row];
        cell.textLabel.text = preface_access.preface_title;
        return cell;
    }
case 1:
    {
        Chapters * chapter_access = [chapters objectAtIndex:indexPath.row];
        cell.textLabel.text = chapter_access.chapter_title;
        return cell;


    }

    case 2:
   {
        Index * index_access = [index objectAtIndex:indexPath.row];
        cell.textLabel.text = index_access.index_title;
       return cell;
   }
        default:
            break;
    }
    return cell;

我想做这样的事情 在 detailviewcontroller.m 中它是第二个视图控制器

这是伪代码我在OOP概念中很弱，所以appologies

- (void)viewDidLoad
{
    NSMutableArray * contentsfromprevious = [[NSMutableArray alloc]initWithCapacity:0];

    Preface * data = [[Preface alloc]init];
    data.preface_url = contentsfromprevious;


    data = preface_contents;
    [self.loadwebview.request];
    }

Answer 1

首先，你的问题仍然不够明确。我已经明白了，你想要这样的东西：

在MasterViewController中，您希望显示您的链接列表（本地存储的html页面）。
如果点击了任何表格视图单元格，则需要在DetailViewController的Web视图中显示本地存储的html页面。

假设这样，你应该在MasterViewController上实现这个UITableViewDelegate方法：

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
    DetailViewController *detailVC = [[DetailViewController alloc] initWithNibName:@"DetailViewController" bundle:nil];
    detailVC.htmlFileName = [htmlFiles objectAtIndex:indexPath.row]; // you might need to change this according to your need, as I said your requirement is unclear
    [self.navigationController pushViewController: detailVC animated:YES];
}

此外，您还需要将其添加到DetailViewController.h文件

@property (nonatomic, strong) NSString *htmlFileName;

在您完成此操作后，您应该将DetailViewControllers viewDidLoad方法更改为以下内容：

- (void)viewDidLoad
{
    // your code
    // ....

    [webView loadRequest:[NSURLRequest requestWithURL:[NSURL fileURLWithPath:[[NSBundle mainBundle] pathForResource: htmlFileName ofType:@"html"] isDirectory:NO]]];

    webView.scalesPageToFit = YES;
    // your code
    // ...
}

我不确定这是否是你真正想要的。另一方面，您不必在break个语句之后放置return语句。它永远不会被执行。

在这种情况下如何访问对象属性

1 个答案: