Question

How can I pass textField data from a UIView Controller text field to a tableview label in a cell? I would like to somehow add the textfield data to an Array so that I can set the number of rows return value to the arrays count.

I’ve added an NSMutable array to my model.

In my view controller I’m implementing the prepareForSegue method

  if ([segue.identifier isEqualToString:@"Details"]){

        MileageDetailViewController * mdv = [segue destinationViewController];

        NSString *text;
        startTextField.text = text;
        mdv.label.text = text;

I’ve tried this several different ways. I’ve done this with an array and tried to add text object an array but that didn’t display either. This last way I tried using a label and adding the text from textField to a tableview Label.

 In the tableView I add this code to grab the text from the viewController.

     - (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
    { 
    // Return the number of sections.
    return 1;
}

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
    // Return the number of rows in the section.
    return  1;
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath      *)indexPath
{
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"Reuse"];

    UILabel *labe = (UILabel *) [cell viewWithTag:20];

    labe.text = label.text;

    // Configure the cell...

    return cell;

Answer 1

The Code examples below are just to get you started. But I strongly, strongly recommend you follow the tutorials on Ray Wenderlich’s site (link) as you seem to just be starting on iOS development.

Passing data between view controllers using prepareForSegue: (with comments in code block):

// This will get called before the view appears
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
    if ([[segue identifier] isEqualToString:@"Details"]) {
        // Get destination view controller
        MileageDetailViewController *vc = [segue destinationViewController];

        // Grab the text field contents and put it into a public property on the new view controller
        vc.myText = self.myTextField.text;
        // NOTE: myText is a public NSString property on your MileageDetailViewController
        // NOTE: self.myTextField is the IBOutlet connected to your Text Field
    }
}

Now onto the methods in your controller with the table view:

// Load the model required for the view controller
- (void)viewDidLoad {
    [super viewDidLoad];

    // Load your "model" - in this case an array property (called myData) with a single piece of text
    // NOTE: myText CANNOT be nil or an exception will occur
    self.myData = [[NSArray alloc] initWithObjects: self.myText, nil];
}


// UITableViewDataSource
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{ 
    // Return the number of sections.
    return 1;
}

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
    // Return the number of rows in the section.
    return  [self.myData count];
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath      *)indexPath
{
    // NOTE: You must have set the reuse identifier in Interface Builder for this to work
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"Reuse"];

    // NOTE: You must have set the tag in Interface Builder for this to work
    UILabel *labe = (UILabel *)[cell viewWithTag:20];

    labe.text = [self.myData objectAtIndex:indexPath.row];

    return cell;
}

Hope this helps; iOS development is a lot of fun but following some tutorials will really help you get up-to-speed.