ios - didSelectRowAtIndexPath 或 prepareForSegue 使用？

Question

我希望能够在我的表格 View 中选择一个项目并进入正确的 View 。假设我的 uitableview 中有两个项目。一个的值为 ubuntu，另一个的值为 arch——在我来自 arraA 的 plist 中，我有一个 SystemID，其中包含文本 Ubuntu/Arch，从来没有两个

现在，当我选择带有 ubuntu 的那个时，我希望它能推送到一个新 View ，其中包含 ubuntu 内容如果我返回并选择 arch，它会再次将我推向 arch 东西所在的 View

到目前为止我做了这个但它没有按预期工作:

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
    NSString *segueName = nil;

if ([[arrayA valueForKey:@"SystemID"]isEqualToString:@"Ubuntu Linux"]) {
    ActionViewController *controller = [[ActionViewController alloc] initWithNibName:@"Ubuntu Linux" bundle:nil];
    controller.Serverinfo = [arrayA objectAtIndex:indexPath.row];
    [self.navigationController pushViewController:controller animated:YES];
}
else if ([[arrayA valueForKey:@"SystemID"]isEqualToString:@"Arch Linux"]) {
    ActionViewController *controller = [[ActionViewController alloc] initWithNibName:@"Arch Linux" bundle:nil];
    controller.Serverinfo = [arrayA objectAtIndex:indexPath.row];
    [self.navigationController pushViewController:controller animated:YES];
}

[self performSegueWithIdentifier: segueName sender: self];
}

也试过prepare forsegue

-(void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender{
if([arrayA valueForKey:@"Arch Linux"])
{
    ActionViewController *controller = (ActionViewController *)segue.destinationViewController;
    NSIndexPath *indexPath = [self.mainTableView indexPathForSelectedRow];
    controller.Serverinfo = [arrayA objectAtIndex:indexPath.row];
    NSLog(@"hostname = %@", controller.Serverinfo);
}
if ([arrayA valueForKey:@"Ubuntu Linux"]) {
    ActionViewController *controller = (ActionViewController *)segue.destinationViewController;
    NSIndexPath *indexPath = [self.mainTableView indexPathForSelectedRow];
    controller.Serverinfo = [arrayA objectAtIndex:indexPath.row];
    NSLog(@"hostname = %@", controller.Serverinfo);
}
}

arrayA 是一个从 plist 中读取的 NSMutableArray，您可以在此处看到

Answer 1

将您的方法替换为:

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{

if ([arrayA[indexPath.row][@"SystemID"]isEqualToString:@"Ubuntu Linux"]) {
    //ActionViewController *controller = [[ActionViewController alloc] initWithNibName:@"Ubuntu Linux" bundle:nil];
    // Make sure you replace Storyboard with your storyboard name
    UIStoryboard *storyboard = [UIStoryboard storyboardWithName:@"Storyboard" bundle:nil];
    ActionViewController *controller = [storyboard instantiateViewControllerWithIdentifier:@"Ubuntu Linux"];
    controller.Serverinfo = [arrayA objectAtIndex:indexPath.row];
    [self.navigationController pushViewController:controller animated:YES];
}
else if ([arrayA[indexPath.row][@"SystemID"]isEqualToString:@"Arch Linux"]) {
    ActionViewController *controller = [[ActionViewController alloc] initWithNibName:@"Arch Linux" bundle:nil];
    controller.Serverinfo = [arrayA objectAtIndex:indexPath.row];
    [self.navigationController pushViewController:controller animated:YES];
}
}

您不需要在 didSelectRow 中调用 [self performSegueWithIdentifier: segueName sender: self]; 因为您已经在 didSelectRow 方法中推送了您的 View 。如果你调用它，你会放置两次 View 。