Question

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{   
SecondViewController *second=[[SecondViewController alloc]initWithNibName:@"SecondViewController"    bundle:nil];
second.getString=[getArray objectAtIndex:indexPath.row];
[self performSegueWithIdentifier:@"Action" sender:nil];  }

如何将数据从一个视图传递到另一个视图，在我的应用程序中有一些我想要的对象，当我点击任何单元格时，该值应显示在具有UILabel的下一个ViewController上？

Answer 1

在SecondViewController中创建一个init方法，如下所示。

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil withData:(NSString *) data {
    if (self = [self initWithNibName:nibNameOrNil bundle:nibBundleOrNil]) {
        self.data = data;
       // write your own code here
    }
    return self;
}

在你的tableview＆＃39; didSelectRowAtIndexPath行方法中获取字符串，然后按下图所示推送控制器

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{   
NSSting *stringData = @"hi";// get your data and passing to stringData
 SecondViewController *secondVC=[[SecondViewController alloc]initWithNibName:@"SecondViewController"    bundle:nil withData:stringData];
  [self.navigationController pushViewController: secondVC animated:YES];
}

Answer 2

试试这个

创建实例变量NSString * sendingText ;// if you want to send text(string)

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{    
    sendingText = [getArray objectAtIndex:indexPath.row];
    [self performSegueWithIdentifier:@"Action" sender:nil];
}
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
    if ([segue.identifier isEqualToString:@"Action"]) // this check is optional if there is only on segue
    {       
       SecondViewController *second= (SecondViewController *)segue.destinationViewController;
       second.getString = sendingText;
    }
}

SecondViewController.h

中的

@interface SecondViewController : UIViewController
{
   UILabel * exampleLabel;
}
@property NSString * getString;
@end

并在SecondViewController.m

-(void)viewDidLoad
{
    exampleLabel = [[UILabel alloc] initWithFrame:CGRectMake(50, 100, 100, 30)];
    [self.view addSubview:exampleLabel];
}
-(void)viewWillAppear:(BOOL)animated
{
    exampleLabel.text = getString;
}

如何使用didSelectRowAtIndexPath（即不使用Segue）将数据从tableview控制器传递到下一个viewController？

2 个答案: