将表视图单元格中的数据传递到IOS中的视图控制器

I know this question is asked many time , i had searched a lot and tried many solution but not worked. I have made a customize table view in which data is load from a service. The data load is quite limited , i have to show the detail of data into new view controller when user click on a cell. Its should pass data of the respective cell which carries data. I have tried segue technique to pass data to new vc but fails , its shows null in value which i'm passing. I have created some labels in new vc in which i'm calling the values from table view cell. My code is,

我知道很多时候都会问这个问题，我经常搜索并尝试了许多解决方案，但没有成功。我已经创建了一个自定义表视图，其中数据从服务加载。数据负载非常有限，我必须在用户点击单元格时向新视图控制器显示数据的详细信息。它应该传递携带数据的相应小区的数据。我已经尝试过segue技术将数据传递给新的vc但是失败了，它在我传递的值中显示为null。我在新的vc中创建了一些标签，我在其中调用表视图单元格中的值。我的代码是，

- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
    if ([segue.identifier isEqualToString:@"ShowDetail"]) {
        //Do something
        ShowViewController *destViewController = segue.destinationViewController;
        NSIndexPath *indexPath = [self.tableView indexPathForSelectedRow];


         destViewController.tites = [_Title objectAtIndex:indexPath.row];
         destViewController.prce = [_Price objectAtIndex:indexPath.row];
         NSLog(@"PPPP is %@",destViewController.phon);
         destViewController.ara = [_LandArea objectAtIndex:indexPath.row];
         destViewController.phon = [_Phone objectAtIndex:indexPath.row];
         destViewController.citi = [_City objectAtIndex:indexPath.row];
         destViewController.loc = [_location objectAtIndex:indexPath.row];
         destViewController.tye = [_type objectAtIndex:indexPath.row];
         destViewController.Idss = [_Id objectAtIndex:indexPath.row];
         destViewController.nam = [_name objectAtIndex:indexPath.row];
         destViewController.emal = [_email objectAtIndex:indexPath.row];
         destViewController.roomss = [_rooms objectAtIndex:indexPath.row];
         destViewController.wash = [_washroom objectAtIndex:indexPath.row];
         destViewController.flloors = [_floor objectAtIndex:indexPath.row];
         destViewController.stat = [_status objectAtIndex:indexPath.row];
         destViewController.descrp = [_descrip objectAtIndex:indexPath.row];
         destViewController.countryy = [_country objectAtIndex:indexPath.row];

    }
}

3 个解决方案

#1

Issue in this question is that you are not populating the _Price and other arrays properly, so where you are populating _Title array , fill other arrays as well like _Price, _City

这个问题的问题是你没有正确填充_Price和其他数组，所以在填充_Title数组的地方，填充其他数组，如_Price，_City

#2

An outlet doesn't instantiate because an outlet is a variable (or property).

出口不会实例化，因为出口是变量（或属性）。

The objects in a nib are instantiated when that nib is loaded, and they are assigned to each outlet as immediately as possible afterward, after the objects are created but before awakeFromNib is sent to all relevant objects.

当加载该nib时，nib中的对象被实例化，并且在创建对象之后但在将awakeFromNib发送到所有相关对象之前，它们被尽可能地分配给每个出口。

In your case you can pass data in ShowViewController and update the label in ShowViewController's viewDidLoad or viewDidAppear.

在您的情况下，您可以在ShowViewController中传递数据并更新ShowViewController的viewDidLoad或viewDidAppear中的标签。

Define string in ShowViewController interface as

在ShowViewController接口中定义字符串为

@property (strong, nonatomic) NSString * titesStr;

- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
     if ([segue.identifier isEqualToString:@"ShowDetail"]) {
     //Do something
     ShowViewController *destViewController = segue.destinationViewController;
     NSIndexPath *indexPath = [self.tableView indexPathForSelectedRow];
     destViewController.titesStr = [_Title objectAtIndex:indexPath.row];
     ....
     ....
     ....
     }
}

In ShowViewController viewDidAppear update your label as

在ShowViewController中，viewDidAppear将您的标签更新为

- (void)viewDidAppear:(BOOL)animated
 {
      [super viewDidAppear:animated];
      tites.text = titesStr;
 }

In place of passing data one by one you can use array also. Best implementation would be using model class.

代替逐个传递数据，您也可以使用数组。最佳实现是使用模型类。

EDIT

编辑

[self performSegueWithIdentifier:@"ShowDetail" sender:tableView];
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
     if ([segue.identifier isEqualToString:@"ShowDetail"]) {
     //Do something
     UITableView *tv = (UITableView*)sender;
     ShowViewController *destViewController = segue.destinationViewController;
     NSIndexPath *indexPath = [tv indexPathForSelectedRow];
     destViewController.tites = [_Title objectAtIndex:indexPath.row];
     ....
     ....
     ....
     }
}

#3

Make following changes in your code :

在代码中进行以下更改：

-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
    [self performSegueWithIdentifier:@"ShowDetail" sender:indexPath];
}

- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender 
 {
     if ([segue.identifier isEqualToString:@"ShowDetail"])
      {
    ShowViewController *destViewController =(ShowViewController *) segue.destinationViewController;
           NSIndexPath *indexPath = (NSIndexPath *)sender;
           destViewController.tites = [_Title objectAtIndex:indexPath.row];
           destViewController.prce = [_Price objectAtIndex:indexPath.row];
           // use this indexpath for segue
      }
  }

#1