将数据从tableview控制器传递到明细表view控制器

Question

I have the following code. I want to display the data that is selected. However, below code is display every post in database. I would like it to display just the one that is selected. How can i do that?

Post Table View Controller:

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
[super tableView:tableView didSelectRowAtIndexPath:indexPath];

[tableView deselectRowAtIndexPath:indexPath animated:YES];

if (![self objectAtIndexPath:indexPath]) {
    // Load More Cell
    [self loadNextPage];
}
}

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
return self.objects.count;
}

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

UserFeedTableViewCell *cell = (UserFeedTableViewCell *)[tableView dequeueReusableCellWithIdentifier:CellIdentifier];

if (cell == nil) {
    cell = [[UserFeedTableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
}

if (object) {
    cell.postView.text = [object objectForKey:@"post"];

    // PFQTVC will take care of asynchronously downloading files, but will only load them when the tableview is not moving. If the data is there, let's load it right away.

}

return cell;
}

Details View Controller:

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath object:(PFObject *)object {
static NSString *CellIdentifier = @"Cell1";

CommentsTableViewCell *cell = (CommentsTableViewCell *)[tableView dequeueReusableCellWithIdentifier:CellIdentifier];

if (cell == nil) {
    cell = [[CommentsTableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
}

if (object) {
    cell.detailsPost.text = [object objectForKey:@"post"];


}

return cell;
}

Answer 1

You should select a row in tableView:didSelectRowAtIndexPath

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

{

// store relevant value in your text object

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

[self.tableView deselectRowAtIndexPath:indexPath animated:NO];

}

and the perform segue

- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {

 DetailViewController  *controller= [segue destinationViewController];
// set your text object here
 controller.text  = // your text object

}

HTH

Answer 2

Create an object of the detail table view controller (on which you have to display the data) in the table view controller (from which data is sent), in the following way,

 - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath { DetailTableViewController *objNext = (DetailTableViewController *)[self.storyboard instantiateViewControllerWithIdentifier:@"detailVC"]; objNext.strLink=[[feeds objectAtIndex:indexPath.row] valueForKey:@"link"]; [self.navigationController pushViewController:objNext animated:YES]; } 

Pass the data which you want to pass on row select,

Here are some links which show how to pass data from one view controller to another, some of them are from stack overflow itself.

Passing Data between View Controllers

ios Pass data between navigation controller

https://teamtreehouse.com/community/how-to-pass-data-between-two-view-controllers-when-you-have-tab-bar-and-navigation-controller-in-between