Question

Can someone exlain the view hierarchy in iphone/ipad development?

I want to know what is the “root” element I need to display a textBox on the screen.

I also would like to know how I can populate a UITableViewController subclass without having to use a NIB.

Is the minimum components is:

Window
    UiViewController  
          UIView
              UITextBox

or

Window  
   UIView
      UITextBox

@ Richard J. Ross III

Where do I put myTableView??

Window  
   myTableView  

What type is myTableView?

Answer 1

The minimum components is that, but it is recommended to use the UIViewController, as it allows you to do some cool stuff with UITableViews, UITabBars, etc. UITableViewController subclass without nib:

#import <UIKit/UIKit.h>

@interface MyController : UITableViewController
// custom methods here
@end

@implementation MyController

–(UITableViewCell *) tableView:(UITableView *) view cellForRowAtIndexPath:(NSIndexPath *) indexPath
{
    return [[[UITableViewCell alloc] init] autorelease];
}

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
    // initializes the table with 10 rows
    return 10;
}

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
     NSLog(@"the user selected row: %@", indexPath);
}

@end

Then, to use that custom controller:

MyController *control = [[MyController alloc] initWithStyle:UITableViewStylePlain];
// now hook it up!
myTableView.dataSource = control;
myTableView.delegate = control;
[control release];

Sorry for my syntax errors, I wrote this without an IDE (e.g. straight on stackoverflow).