Datasets:

Vikhrmodels

/

programming_books_eng

like 1

Follow

Vikhr models 146

1. Go to the tableView:cellForRowAtIndexPath: method.

2. Add the following code just below the line that sets the text label of the cell:

if (toDoItem.completed) {

cell.accessoryType = UITableViewCellAccessoryCheckmark;

} else {

cell.accessoryType = UITableViewCellAccessoryNone;

}

Your tableView:cellForRowAtIndexPath: method should now look like this:

- (UITableViewCell *)tableView:(UITableView *)tableView

cellForRowAtIndexPath:(NSIndexPath *)indexPath

{

static NSString *CellIdentifier = @"ListPrototypeCell";

UITableViewCell *cell = [tableView

dequeueReusableCellWithIdentifier:CellIdentifier forIndexPath:indexPath];

XYZToDoItem *toDoItem = [self.toDoItems objectAtIndex:indexPath.row];

cell.textLabel.text = toDoItem.itemName;

if (toDoItem.completed) {

cell.accessoryType = UITableViewCellAccessoryCheckmark;

} else {

cell.accessoryType = UITableViewCellAccessoryNone;

}

2013-10-22 | Copyright © 2013 Apple Inc. All Rights Reserved.

104

Tutorial: Add Data

Add New Items

return cell;

}

Checkpoint: Run your app. The list of items you added in loadInitialData is visible as cells in your table

view. When you tap an item, a checkmark should appear next to it. If you tap the same item again, the checkmark

disappears.

Add New Items

The final step in creating the to-do list app’s functionality is implementing the ability to add an item. When a

user enters an item name in the text field on the XYZAddToDoItemViewController scene and taps the

Done button, you want the view controller to create a new list item and pass it back to the

XYZToDoListViewController to display in the to-do list.

First, you need to have a list item to configure. Just as with the table view, the view controller is the logical

place to connect the interface to the model. Give the XYZAddToDoItemViewController a property to hold

the new to-do item.

To add an XYZToDoItem to the XYZAddToDoItemViewController class

1.

In the project navigator, select XYZAddToDoItemViewController.h.

Because you’ll need to access the list item from your table view controller later on, it’s important to make

this a public property. That’s why you declare it in the interface file, XYZAddToDoItemViewController.h,

instead of in the implementation file, XYZAddToDoItemViewController.m.

2. Add an import declaration to the XYZToDoItem class above the @interface line.

#import "XYZToDoItem.h"

3. Add a toDoItem property to the interface.

@interface XYZAddToDoItemViewController : UIViewController

@property XYZToDoItem *toDoItem;

@end

2013-10-22 | Copyright © 2013 Apple Inc. All Rights Reserved.

105

Tutorial: Add Data

Add New Items

To get the name of the new item, the view controller needs access to the contents of the text field where the

user enters the name. To do this, create a connection from the XYZAddToDoItemViewController class that

connects to the text field in your storyboard.