Question

我有UITableViewCell，单元格索引类别明智，并在标题上展开单元格点击，并通过JSON加载数据。我想选择单元格并传递另一个视图控制器的数据。我尝试了很多次，但只传递数据第一个单元格。我点击了另一个单元格，因此这个条件传递数据第一个单元无法发送特定的单元格数据。怎么可能。请帮忙。

-(void)connectionDidFinishLoading:(NSURLConnection *)connection
{
    NSError *error;

    NSMutableDictionary *json = [NSJSONSerialization JSONObjectWithData:response options:NSJSONReadingMutableLeaves  error:&error];

    NSArray *statuses = [json objectForKey:@"status"];
    names=[[NSMutableArray alloc]initWithArray:[statuses valueForKey:@"business_category_name"]];
    business_details_array=[[NSMutableArray alloc]initWithArray:[statuses valueForKey:@"business_details"]];

    for (int i=0; i<[names count]; i++) {
        [arrayForBool addObject:[NSNumber numberWithBool:NO]];
    }

    [self.tabel_view reloadData];
}

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
     return names.count;
}

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
    if ([[arrayForBool objectAtIndex:section] boolValue]) {
        return [[business_details_array objectAtIndex:section] count];
    }
    else
        return 0;
}

- (CGFloat)tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section
{
    return 70;
}

- (UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section
{

    UIView *sectionHeaderView=[[UIView alloc]initWithFrame:CGRectMake(0, 0, tableView.frame.size.width,70)];

    sectionHeaderView.backgroundColor=[UIColor grayColor];

    sectionHeaderView.tag=section;

    UIView *sectionsubHeaderView=[[UIView alloc]initWithFrame:CGRectMake(0, 0, tableView.frame.size.width,60)];

    sectionsubHeaderView.backgroundColor=[UIColor blueColor];

    UIImageView *arrow=[[UIImageView alloc]initWithFrame:CGRectMake(0, 0,60, 60)];

    [arrow setImage:[UIImage imageNamed:@"arrow.png"]];

    UILabel *Lbl=[[UILabel alloc]initWithFrame:CGRectMake(60, 0,tableView.frame.size.width-60, 60)];

    Lbl.text=[names objectAtIndex:section];

    Lbl.textColor=[UIColor whiteColor];

    [sectionsubHeaderView addSubview:arrow];

    [sectionsubHeaderView addSubview:Lbl];

    [sectionHeaderView addSubview:sectionsubHeaderView];

    UITapGestureRecognizer  *headerTapped   = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(sectionHeaderTapped:)];

    [sectionHeaderView addGestureRecognizer:headerTapped];

    return  sectionHeaderView;
}

- (void)sectionHeaderTapped:(UITapGestureRecognizer *)gestureRecognizer
{

    NSIndexPath *indexPath = [NSIndexPath indexPathForRow:0 inSection:gestureRecognizer.view.tag];
    if (indexPath.row == 0) {
        BOOL collapsed  = [[arrayForBool objectAtIndex:indexPath.section] boolValue];
        for (int i=0; i<[names count]; i++) {
            if (indexPath.section==i) {
                [arrayForBool replaceObjectAtIndex:i withObject:[NSNumber numberWithBool:!collapsed]];
            }
        }
        [self.tabel_view reloadSections:[NSIndexSet indexSetWithIndex:gestureRecognizer.view.tag] withRowAnimation:UITableViewRowAnimationAutomatic];

    }
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    MemberTableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"ht"];
    if (cell==nil)
    {
        NSArray *nib = [[NSBundle mainBundle] loadNibNamed:@"Cell" owner:self options:nil];
        cell = [nib objectAtIndex:0];
    }

    NSString*title_str=[NSString stringWithFormat:@"%@",[[[business_details_array objectAtIndex:indexPath.section] valueForKey:@"name"] objectAtIndex:indexPath.row]];
    cell.title.text= title_str;
    [titles addObject:title_str];
    NSLog(@"get %@",titles);

    cell.email.text=[NSString stringWithFormat:@"%@",[[[business_details_array objectAtIndex:indexPath.section] valueForKey:@"email"] objectAtIndex:indexPath.row]];
    //[emailary addObject:cell.email.text];

    cell.address_lbl.text=[NSString stringWithFormat:@"%@",[[[business_details_array objectAtIndex:indexPath.section] valueForKey:@"address"] objectAtIndex:indexPath.row]];
    //[adrsary addObject:cell.address_lbl.text];

    cell.phone_lbl.text=[NSString stringWithFormat:@"%@",[[[business_details_array objectAtIndex:indexPath.section] valueForKey:@"phone"] objectAtIndex:indexPath.row]];
    // [phoneary addObject:cell.phone_lbl.text];

    cell.web_lbl.text=[NSString stringWithFormat:@"%@",[[[business_details_array objectAtIndex:indexPath.section] valueForKey:@"website"] objectAtIndex:indexPath.row]];
    //[websiteary addObject:cell.web_lbl.text];

    cell.sens_lbl.text=[NSString stringWithFormat:@"%@",[[[business_details_array objectAtIndex:indexPath.section] valueForKey:@"member_since"] objectAtIndex:indexPath.row]];
    //[sensary addObject:cell.sens_lbl.text];

    cell.des_lbl.text=[NSString stringWithFormat:@"%@",[[[business_details_array objectAtIndex:indexPath.section] valueForKey:@"des"] objectAtIndex:indexPath.row]];
    //[desary addObject:cell.des_lbl.text];

    NSData* imageData = [[NSData alloc] initWithContentsOfURL:[NSURL URLWithString: [NSString stringWithFormat:@"%@",[[[business_details_array objectAtIndex:indexPath.section] valueForKey:@"img_url"] objectAtIndex:indexPath.row]]]];

    UIImage* image = [[UIImage alloc] initWithData:imageData];

    cell.image_view.image =image;
    //[images addObject:cell.image_view.image];

    return  cell;
}

-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
    [arrayForBool replaceObjectAtIndex:indexPath.section withObject:[NSNumber numberWithBool:NO]];

    [self.tabel_view reloadSections:[NSIndexSet indexSetWithIndex:indexPath.section] withRowAnimation:UITableViewRowAnimationAutomatic];
}


- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
    if ([segue.identifier isEqualToString:@"showRecipeDetail"])
    {
        NSIndexPath *indexPath = [self.tabel_view indexPathForSelectedRow];
        member_details *destViewController = segue.destinationViewController;
        destViewController.hello = [titles objectAtIndex:indexPath.row];

    }
}

Answer 1

由于你直接从tableview加入segue，这不是正确的方法。而不是你必须通过控制器加入segue到控制器。因此，在获得正确选择的行索引之前，视图控制器会快速推送，并且您总是得到0索引。

您可以在prepareForSegue的{{1}}方法中执行相同的操作，而不是在didSelect中编写逻辑。

为此，您必须从故事板中找到目标视图控制器。并将数据设置为必需属性。

修改

删除准备segure逻辑并在didSelect中执行此操作

UITablView

这是截图：

Answer 2

请尝试删除准备prepareForSegue和didselectrowatindexpath添加。

- (void) tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
    [arrayForBool replaceObjectAtIndex:indexPath.section withObject:[NSNumber numberWithBool:NO]];

    [self.tabel_view reloadSections:[NSIndexSet indexSetWithIndex:indexPath.section] withRowAnimation:UITableViewRowAnimationAutomatic];

    member_details *destViewController = [[member_details alloc]init];
    destViewController.hello = [titles objectAtIndex:indexPath.row];

    [[self navigationController] pushViewController:destViewController animated:YES];
}

Answer 3

您应该在viewcontrollers之间创建segue。

不要从cell到viewcontrollers创建segue。

然后你应该打电话给

[self performSegueWithIdentifier:@"showRecipeDetail" sender:self];

更新didSelectRowAtIndexPath

中的表格后

Answer 4

试试这个

a = '%s' % (John)

如何在select UITableViewCell Row中传递值

4 个答案: