UIView & UIWebView in UINavigationController

[Terry]

Hello people,

i have UINavigationController as root which develop in Window-based, i need to have a skeleton as below:
First level is UITableView
Second level also UITableView
Third level is UIView //problem on third level
Fourth level is UIWebView //not yet implement

AppDelegate.h

#import <UIKit/UIKit.h>

@interface ForkerAppDelegate : NSObject <UIApplicationDelegate> {
    UIWindow *window;
	UINavigationController *navController;
}

@property (nonatomic, retain) IBOutlet UIWindow *window;
@property (nonatomic, retain) IBOutlet UINavigationController *navController;
@end

AppDelegate.m

#import "ForkerAppDelegate.h"

@implementation ForkerAppDelegate
@synthesize window;
@synthesize navController;

- (void)applicationDidFinishLaunching:(UIApplication *)application {    
    // Override point for customization after application launch
	[window addSubview: navController.view];
    [window makeKeyAndVisible];
	//return YES;
}
- (void)dealloc {
	[navController release];
    [window release];
    [super dealloc];
}
@end

FirstLevelController.h /*first level is an UITableViewController

#import <Foundation/Foundation.h>

@interface FirstLevelController : UITableViewController {
	NSArray *controllers;
}
@property (nonatomic, retain) NSArray *controllers;
@end

FirstLevelController.m

#import "FirstLevelController.h"
#import "DisclosureButtonController.h"

@implementation FirstLevelController
@synthesize controllers; 

- (void)viewDidLoad {
	self.title = @"First Level";
	NSMutableArray *array = [[NSMutableArray alloc] init]; 
        //DisclosureButton
	self.controllers = array; 
	[array release]; 
	[super viewDidLoad];
} 
- (void)viewDidUnload {
	self.controllers = nil; 
	[super viewDidUnload];
} 
- (void)dealloc {
	[controllers release]; 
	[super dealloc];
}
#pragma mark - 
#pragma mark Table Data Source Methods

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

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { 
	static NSString *FirstLevelCell= @"FirstLevelCell"; 
	UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier: FirstLevelCell];
	if (cell == nil) { 
		cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault 
									   reuseIdentifier: FirstLevelCell] autorelease];
	} // Configure the cell 
	NSUInteger row = [indexPath row]; 
	SecondLevelViewController *controller = [controllers objectAtIndex:row]; 
	cell.textLabel.text = controller.title; 
	//cell.imageView.image = controller.rowImage; 
	cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator; 
	return cell;
} 

#pragma mark - 
#pragma mark Table View Delegate Methods 
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
	NSUInteger row = [indexPath row]; 
	SecondLevelViewController *nextController = [self.controllers objectAtIndex:row];
	[self.navigationController pushViewController:nextController
										 animated:YES];
}
@end

SecondLevelViewController.h //second level also UITableView

#import <Foundation/Foundation.h>

@interface SecondLevelViewController : UITableViewController {
	NSArray *controllers;
}
@property (nonatomic, retain) NSArray *controllers;
@end

SecondLevelViewController.m

#import "SecondLevelViewController.h"
#import "ThirdLevelController.h"
#import "DetailView.h"

@implementation SecondLevelViewController 
@synthesize controllers;

@end

ThirdLevelController.h //Third level is UIView

#import <Foundation/Foundation.h>
@interface ThirdLevelController : UIViewController {
}

@end

ThirdLevelController.m

#import "ThirdLevelController.h"
@implementation ThirdLevelController
@end

DisclosureButtonController.h //this is for secondlevelviewcontroller

#import <Foundation/Foundation.h>
#import "SecondLevelViewController.h"

@interface DisclosureButtonController : SecondLevelViewController {
	NSArray *list;
}
@property (nonatomic, retain) NSArray *list;
@end

DisclosureButtonController.m

#import "DisclosureButtonController.h"
#import "ForkerAppDelegate.h"
#import "ThirdLevelController.h"

@implementation DisclosureButtonController
@synthesize list; 

- (void)viewDidLoad {
    //my list array 
}
- (void)viewDidUnload {
	self.list = nil; 
} 
- (void)dealloc {
	[list release]; 
	[super dealloc];
}	
#pragma mark -
#pragma mark Table Data Source Methods 
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section { 
	return[list count];
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
	static NSString * DisclosureButtonCellIdentifier = @"DisclosureButtonCellIdentifier";
	UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier: DisclosureButtonCellIdentifier];
	if (cell == nil) { 
		cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault 
									   reuseIdentifier: DisclosureButtonCellIdentifier] autorelease];
	} 
	NSUInteger row = [indexPath row]; 
	NSString *rowString =[list objectAtIndex:row]; 
	cell.textLabel.text = rowString;
	cell.accessoryType = UITableViewCellAccessoryDetailDisclosureButton; 
	[rowString release]; 
	return cell;
}
#pragma mark - 
#pragma mark Table View Delegate Methods 
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
	NSUInteger row = [indexPath row]; 
	ThirdLevelController *nextController = [self.controllers objectAtIndex:row];
	[self.navigationController pushViewController:nextController
										 animated:YES];
}
@end

DetailView.h //this is for thirdlevelcontroller

@interface DetailView : ThirdLevelController {
	IBOutlet UIButton *button;
}
@property (nonatomic, retain) IBOutlet UIButton *button;
- (IBAction)buttonPressed:(id)sender;
@end

DetailView.m

#import "DetailView.h"
#import "ForkerAppDelegate.h"

@implementation DetailView
@synthesize button;

- (IBAction) buttonPressed:(id)sender {
	//go url
}
- (void)viewWillAppear:(BOOL)animated {
	[super viewWillAppear:animated];
}
- (void)viewDidUnload {
	[super viewDidUnload];
}
- (void)dealloc {
	[super dealloc];
}
@end

In MainWindow.xib, i drag an Navigation Controller to its MainWindow.xib window, and change the First Level Controller (Root View Controller) class as FirstLevelController.

then, I've also created a new DetailView.xib, what i've done on the DetailView.xib is click on its File's Owner and changed its class to DetailView, then i control-drag to View icon, and select view.

Problem: i build and run, there are no warning and error message. And in the simulator, i tap on first level, is going to second level, which is fine, when i tap the content on second level table, it terminate.
This problem bothering me for several sleepless days, hope you guys can help up. Appreciate it. Thanks

Regards
Terry

[Terry]

anyone ?