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James Douglas
James Douglas

Reputation: 736

Passing data between UITableViewCell and UITableViewController?

I created master details template project in xcode 4.6 and I added custom cell with 2 textfields. I also created new class which is subclass of UITableViewCell and inside this class I created outlets for text fields. When user types something NSMutableArray is updated and this works fine. Now I am wondering how to pass this array back to MasterViewController (UITableViewController) so that I can use this data to show calculations.

I tried using tutorials for delegates between UIViewControllers but I keep getting errors. Any help is appreciated.

Upvotes: 3

Views: 2918

Answers (2)

Marco Pompei
Marco Pompei

Reputation: 1080

You shouldn't keep data inside the UITableViewCell, as it breaks the MVC.

You need to get a reference of the UITextField on your cell. This is how I do in a login form:

I have a custom cell subclass called TextFieldCell, it has an outlet called textField, I want that my UITableViewController have references to these UITextFields.

First I open my storyboard, set the cell class to TextFieldCell and than connect the UITextField to cell textField outlet. Than I add this to the tableView:cellForRowAtIndexPath:

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    (…)
    if (indexPath.row == 0) {
        // Sets the textField of the first cell as the loginTextField.
        self.loginTextField = tCell.textField;
    } else {
        // Sets the textField of the second cell as the passwordTextField.
        self.passwordTextField = tCell.textField;
    }
    tCell.textField.delegate = self;
    (…)
}

Now I can access the value of my loginTextField and my passwordTextField. I do that on the tableView:cellForRowAtIndexPath: because that's when I'm creating the cell to add to the table view.

Upvotes: 2

iPatel
iPatel

Reputation: 47099

In your case you need to create Protocol:

I just Give Basic Idea for how to Create Protocol

Also Read This Question

#DetailViewController.h

#import <UIKit/UIKit.h>

@protocol MasterDelegate <NSObject>
-(void) getButtonTitile:(NSString *)btnTitle;
@end


@interface DetailViewController : MasterViewController

@property (nonatomic, assign) id<MasterDelegate> customDelegate; 

#DetailViewController.m

if([self.customDelegate respondsToSelector:@selector(getButtonTitile:)])
{
          [self.customDelegate getButtonTitile:button.currentTitle];    
}

#MasterViewController.m

create obj of DetailViewController

DetailViewController *obj = [[DetailViewController alloc] init];
obj.customDelegate = self;
[self.navigationController pushViewController:reportTypeVC animated:YES];

and add delegate method in MasterViewController.m for get button title.

#pragma mark -
#pragma mark - Custom Delegate  Method

-(void) getButtonTitile:(NSString *)btnTitle;
{
    NSLog(@"%@", btnTitle);

}

Upvotes: 0

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