Loading a View Controller based on UITableViewController cell

Question

Hi,
I've been trying to make my TableViewController cells load different UIViewControllers when they are clicked, but haven't been having any luck. All that happens is my program starts but then when I click on the cells, the view freezes. This is my code for just loading one view but this can easily be changed to load different views later:
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
UIViewController *targetViewController = [menuList objectAtIndex: indexPath.row];
if (targetViewController == nil) {
switch(indexPath.row){
case 0: {
targetViewController = [[PageTitleViewController alloc] initWithNibName:@"PageTitleViewController" bundle:nil];
break;
case 1: {
targetViewController = [[PageTitleViewController alloc] initWithNibName:@"PageTitleViewController" bundle:nil];
break;
case 2: {
targetViewController = [[PageTitleViewController alloc] initWithNibName:@"PageTitleViewController" bundle:nil];
break;
case 3: {
targetViewController = [[PageTitleViewController alloc] initWithNibName:@"PageTitleViewController" bundle:nil];
break;
targetViewController = [menuList objectAtIndex: indexPath.row];
[[self navigationController] pushViewController:targetViewController animated:YES];
is there a better way of doing this? I tried if(indexPath.row == 0) but that seemed to make it freeze as well!

Answer 1

// MyTableController.h
#import <UIKit/UIKit.h>
#define kMenuLabelTag 100
@interface MyTableController : UIViewController <UITableViewDelegate, UITableViewDataSource> {
IBOutlet UITableView *myTableView;
NSArray *menuList;
NSMutableArray *controlList;
IBOutlet UINavigationController *navigationController;
@property (nonatomic, retain) IBOutlet UITableView *myTableView;
@property (nonatomic, copy) NSArray *menuList;
@property (nonatomic, retain) NSMutableArray *controlList;
@property (nonatomic, assign) IBOutlet UINavigationController *navigationController;
@end
// MyTableController.m
#import "MyTableController.h"
#import "PageTitleViewController.h"
@implementation MyTableController
@synthesize myTableView, menuList, controlList, navigationController;
#pragma mark Table View Controller Methods
// Implement viewDidLoad to do additional setup after loading the view.
- (void)viewDidLoad {
[super viewDidLoad];
self.menuList = [NSArray arrayWithObjects:
@"Start",
@"Settings",
@"Instructions",
@"About",
nil];
NSMutableArray *mutableArray = [[NSMutableArray alloc] initWithCapacity:10];
for (int i = 0; i < [menuList count]; i++)
[mutableArray addObject:[NSNull null]];
self.controlList = mutableArray;
[mutableArray release];
- (void)dealloc {
[myTableView release];
[menuList release];
[controlList release];
[super dealloc];
#pragma mark -
#pragma mark Table View Data Source Methods
- (NSInteger)tableView:(UITableView*)tableView numberOfRowsInSection:(NSInteger)section {
return [self.menuList count];
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *MyIdentifier = @"MyIdentifier";
UITableViewCell *Start = [tableView dequeueReusableCellWithIdentifier:MyIdentifier];
if (Start == nil) {
Start = [[[UITableViewCell alloc] initWithFrame:CGRectZero reuseIdentifier:MyIdentifier] autorelease];
Start.accessoryType = UITableViewCellAccessoryDisclosureIndicator;
UILabel *label = [[UILabel alloc] init];
label.font = [UIFont boldSystemFontOfSize:24.0f];
label.frame = CGRectMake(85.0f, 15.0f, 200.0f, 28.0f);
label.textColor = [UIColor blackColor];
label.backgroundColor = [UIColor colorWithRed:1.0 green:1.0 blue:1.0 alpha:0.6];
label.opaque = NO;
label.tag = kMenuLabelTag;
[Start.contentView addSubview:label];
[label release];
UILabel *menuLabel = (UILabel*)[Start.contentView viewWithTag:kMenuLabelTag];
menuLabel.text = [menuList objectAtIndex:indexPath.row];
return Start;
#pragma mark -
#pragma mark Table View Delgate Methods
- (void)tableView:(UITableView*)tableView didSelectRowAtIndexPath:(NSIndexPath*)indexPath {
NSUInteger row = [indexPath row];
NSLog(@"entering didSelectRow: controlList=%@ row=%d", controlList, row);
if ([controlList count] <= row) {
NSLog(@"return - controlList too short");
return;
UIViewController *targetViewController = [controlList objectAtIndex:indexPath.row];
if ((NSNull *)targetViewController == [NSNull null]) {
NSLog(@"at switch: targetViewController=%@", targetViewController);
switch(row){
case 0: {
targetViewController = [[PageTitleViewController alloc] initWithNibName:@"PageTitleViewController" bundle:nil];
break;
case 1: {
targetViewController = [[PageTitleViewController alloc] initWithNibName:@"PageTitleViewController" bundle:nil];
break;
case 2: {
targetViewController = [[PageTitleViewController alloc] initWithNibName:@"PageTitleViewController" bundle:nil];
break;
case 3: {
targetViewController = [[PageTitleViewController alloc] initWithNibName:@"PageTitleViewController" bundle:nil];
break;
default: {
NSLog(@"return - invalid row no.: %d", row);
return;
if (![targetViewController respondsToSelector:@selector(view)]) {
NSLog(@"return after switch - targetViewController is not a controller");
return;
[controlList replaceObjectAtIndex:row withObject:targetViewController];
[targetViewController release];
NSLog(@"ready to push controller: controlList=%@ targetViewController=%@", controlList, targetViewController);
[[self navigationController] pushViewController:targetViewController animated:YES];
@end