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iOS UITableView didSelectRowAtIndexPath

H

HarryWorksInc

macrumors regular
Original poster
Feb 21, 2010
179
0
Hi, im a little new to UITable views but heres my problem, I created a UITableView subclass and then turned it into a UIViewController so that I could use iAds, but now when I select a row in the UITableView nothing happens it just selects the row and the application keeps on running perfectly fine but I want it to load a view. Heres my code for the didSelectRowAtIndexPath void
HTML: 
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
	[[NSUserDefaults standardUserDefaults] setObject:[displayedTransactions objectAtIndex:indexPath.row] forKey:@"Transaction"];
	
	ViewTransaction *controllerVT = [[ViewTransaction alloc] initWithNibName:@"ViewTransaction" bundle:nil];
	controllerVT.delegate = self;
	
	controllerVT.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal;
	[self presentModalViewController:controllerVT animated:YES];
	
	[controllerVT release];
	[self.myTableView deselectRowAtIndexPath:indexPath animated:NO];
}

The table view used to run this code and open a new view but does't anymore.
 
HTML: 
#import <UIKit/UIKit.h>
#import "NewTransaction.h"
#import "ViewTransaction.h"

@interface Savings : UIViewController <UISearchBarDelegate> {
    NSArray *transactions;
    NSArray *displayedTransactions;
	
	NSUInteger Balance;
	IBOutlet UILabel *TotalBalanceLabel;
	
	BOOL Searching;
	IBOutlet UISearchBar *mySearchBar;
}
@property (nonatomic, retain) NSArray *transactions;
@property (nonatomic, retain) NSArray *displayedTransactions;
@property (nonatomic, retain) IBOutlet UITableView *tableView;
@property (nonatomic, retain) UISearchBar *mySearchBar;

-(void)AddData;
-(IBAction)Search;

- (void)filterResultsUsingString:(NSString *)filterString;

@end
HTML: 
#import "Savings.h"

@implementation Savings

#pragma mark -
#pragma mark View lifecycle

@synthesize tableView, transactions, displayedTransactions, mySearchBar;

- (void)viewDidLoad {
    [super viewDidLoad];
	
	self.title = @"Savings";
	
	NSArray *Transactions = [[NSUserDefaults standardUserDefaults] objectForKey:@"Transactions"];
    if (Transactions) {
        self.transactions = Transactions;
        self.displayedTransactions = Transactions;
    } else {
        self.transactions = [NSArray array];
        self.displayedTransactions = [NSArray array];
    }
	
	Balance = [[[NSUserDefaults standardUserDefaults] stringForKey:@"SavingsBalance"] intValue];
	NSString *BalanceString = [NSString stringWithFormat:@"$%@", [[NSUserDefaults standardUserDefaults] stringForKey:@"SavingsBalance"]];
	if ([BalanceString isEqualToString:@"$0"]) {
		BalanceString = @"$0.00";
	}
	TotalBalanceLabel.text = BalanceString;
	
	UIBarButtonItem *AddTransation = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemAdd target:self action:@selector(addTransation)];
	AddTransation.style = UIBarButtonItemStylePlain;
	self.navigationItem.rightBarButtonItem = AddTransation;
    [AddTransation release];
	
	Searching = NO;
	self.mySearchBar.delegate = self;
	self.mySearchBar.showsCancelButton = YES;
}

- (void)NewTransactionDidFinish:(NewTransaction *)controllerNT {
	[self dismissModalViewControllerAnimated:YES];
	
	if (![[NSUserDefaults standardUserDefaults] boolForKey:@"DidCanel"]) {
		[self AddData];
	}
}
-(void)AddData {
	int i;
	if ([[NSUserDefaults standardUserDefaults] boolForKey:@"SavingsNewTransactionAdd"]) {
		i = [[NSUserDefaults standardUserDefaults] integerForKey:@"SavingsNewTransactionAmount"];
	} else {
		int x = [[NSUserDefaults standardUserDefaults] integerForKey:@"SavingsNewTransactionAmount"] * 2;
		i = [[NSUserDefaults standardUserDefaults] integerForKey:@"SavingsNewTransactionAmount"] - x;
	}
	
	NSString *TransactionTitle = [NSString stringWithFormat:@"%@-Amount", [[NSUserDefaults standardUserDefaults] stringForKey:@"SavingsNewTransactionTitle"]];
	[[NSUserDefaults standardUserDefaults] setInteger:i forKey:TransactionTitle];
	
	NSString *TransactionTime = [NSString stringWithFormat:@"%@-Time", [[NSUserDefaults standardUserDefaults] stringForKey:@"SavingsNewTransactionTitle"]];
	[[NSUserDefaults standardUserDefaults] setObject:[NSDate date] forKey:TransactionTime];
	
	NSMutableArray *mutableTransactions = [transactions mutableCopy];
	
	NSString *NewObjectTitle = [[NSUserDefaults standardUserDefaults] stringForKey:@"SavingsNewTransactionTitle"];
	[mutableTransactions insertObject:NewObjectTitle atIndex:0];
	
	// Update user defaults.
	[[NSUserDefaults standardUserDefaults] setObject:mutableTransactions forKey:@"Transactions"];
	
	// Set self's recent searches to the new recents array, and reload the table view.
	self.transactions = mutableTransactions;
	self.displayedTransactions = mutableTransactions;
	
	[tableView reloadData];
	
	if ([[NSUserDefaults standardUserDefaults] boolForKey:@"SavingsNewTransactionAdd"]) {
		Balance -= i;
	} else {
		Balance += i;
	}
	NSString *BalanceString = [[NSString alloc] initWithFormat:@"%d", Balance];
	[[NSUserDefaults standardUserDefaults] setObject:BalanceString forKey:@"SavingsBalance"];
	NSString *BalanceString2 = [NSString stringWithFormat:@"$%@", BalanceString];
	TotalBalanceLabel.text = BalanceString2;
}
-(void)addTransation {
	NewTransaction *controllerNT = [[NewTransaction alloc] initWithNibName:@"NewTransaction" bundle:nil];
	controllerNT.delegate = self;
	
	controllerNT.modalTransitionStyle = UIModalTransitionStyleCoverVertical;
	[self presentModalViewController:controllerNT animated:YES];
	
	[controllerNT release];
}

-(IBAction)Search {
	if (Searching) {
		Searching = NO;
		[UIView beginAnimations:nil context:nil];
		mySearchBar.center = CGPointMake(mySearchBar.center.x, mySearchBar.center.y-44);
		self.tableView.frame = CGRectMake(0.0, 0.0, 320, 372);
		[UIView commitAnimations];
		mySearchBar.text = @"";
		[self filterResultsUsingString:mySearchBar.text];
	} else {
		Searching = YES;
		[UIView beginAnimations:nil context:nil];
		mySearchBar.center = CGPointMake(mySearchBar.center.x, mySearchBar.center.y+44);
		self.tableView.frame = CGRectMake(0.0, 44, 320, 328);
		[UIView commitAnimations];
	}
}
// called when keyboard search button pressed
- (void)searchBarSearchButtonClicked:(UISearchBar *)searchBar
{
	[self.mySearchBar resignFirstResponder];
	[self filterResultsUsingString:self.mySearchBar.text];
}

// called when cancel button pressed
- (void)searchBarCancelButtonClicked:(UISearchBar *)searchBar
{
	[self.mySearchBar resignFirstResponder];
	Searching = NO;
	[UIView beginAnimations:nil context:nil];
	mySearchBar.center = CGPointMake(mySearchBar.center.x, mySearchBar.center.y-44);
	self.tableView.frame = CGRectMake(0.0, 0.0, 320, 372);
	[UIView commitAnimations];
	mySearchBar.text = @"";
	[self filterResultsUsingString:mySearchBar.text];
}

/*
 - (void)viewWillAppear:(BOOL)animated {
 [super viewWillAppear:animated];
 }
 */
/*
 - (void)viewDidAppear:(BOOL)animated {
 [super viewDidAppear:animated];
 }
 */
- (void)viewWillDisappear:(BOOL)animated {
    [super viewWillDisappear:animated];
	
	NSString *BalanceString = [[NSString alloc] initWithFormat:@"%d", Balance];
	[[NSUserDefaults standardUserDefaults] setObject:BalanceString forKey:@"SavingsBalance"];
}
/*
 - (void)viewDidDisappear:(BOOL)animated {
 [super viewDidDisappear:animated];
 }
 */
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {
    // Return YES for supported orientations
    return YES;
}

#pragma mark -
#pragma mark Table view data source

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


// Customize the appearance of table view cells.
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
    
    static NSString *CellIdentifier = @"Cell";
    
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
    if (cell == nil) {
        cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease];
    }
	NSString *TransactionTime = [NSString stringWithFormat:@"%@-Time", [displayedTransactions objectAtIndex:indexPath.row]];
    NSString *Time = [[NSUserDefaults standardUserDefaults] stringForKey:TransactionTime];
	
    cell.textLabel.text = [displayedTransactions objectAtIndex:indexPath.row];
    cell.detailTextLabel.text = Time;
	
	NSString *TransactionAmount = [NSString stringWithFormat:@"%@-Amount", [displayedTransactions objectAtIndex:indexPath.row]];
    NSString *Detail = [[NSUserDefaults standardUserDefaults] stringForKey:TransactionAmount];
	NSString *Amount = [NSString stringWithFormat:@"$%@", Detail];
	
	UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];
	[button setTitle:Amount forState:UIControlStateNormal];
	[button setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
	[button setTitleShadowColor:[UIColor grayColor] forState:UIControlStateNormal];
	CGRect frame = CGRectMake(0.0, 0.0, 70, 25);
	button.frame = frame;
	button.enabled = NO;
	cell.accessoryView = button;
	
	return cell;
}

- (void)filterResultsUsingString:(NSString *)filterString {
	
    /*
     If the search string is zero-length, then restore the recent searches, otherwise create a predicate to filter the recent searches using the search string.
     */
    if ([filterString length] == 0) {
        self.displayedTransactions = transactions;
    } else {
        NSPredicate *filterPredicate = [NSPredicate predicateWithFormat:@"self BEGINSWITH[cd] %@", filterString];
        NSArray *filteredRecentSearches = [transactions filteredArrayUsingPredicate:filterPredicate];
        self.displayedTransactions = filteredRecentSearches;
    }
	
    [self.tableView reloadData];
}

- (BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath {
    // Return NO if you do not want the specified item to be editable.
    return YES;
}


- (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath {
    
    if (editingStyle == UITableViewCellEditingStyleDelete) {
		NSMutableArray *mutableRecents = [transactions mutableCopy];
		
		NSString *TransactionTitle = [NSString stringWithFormat:@"%@-Amount", [displayedTransactions objectAtIndex:indexPath.row]];
		if ([[NSUserDefaults standardUserDefaults] integerForKey:TransactionTitle]>0) {
			Balance -= [[NSUserDefaults standardUserDefaults] integerForKey:TransactionTitle];
		} else {
			
		}

		NSString *BalanceString = [[NSString alloc] initWithFormat:@"%d", Balance];
		[[NSUserDefaults standardUserDefaults] setObject:BalanceString forKey:@"SavingsBalance"];
		NSString *BalanceString2 = [NSString stringWithFormat:@"$%@", BalanceString];
		TotalBalanceLabel.text = BalanceString2;
		
		[mutableRecents removeObject:[displayedTransactions objectAtIndex:indexPath.row]];
		[tableView deleteRowsAtIndexPaths:[NSArray arrayWithObjects:indexPath.row, nil] withRowAnimation:UITableViewRowAnimationRight];
		
		// Update user defaults.
		[[NSUserDefaults standardUserDefaults] setObject:mutableRecents forKey:@"Transactions"];
		
		// Set self's recent searches to the new recents array, and reload the table view.
		self.transactions = mutableRecents;
		self.displayedTransactions = mutableRecents;
		[tableView reloadData];
    }   
}

- (BOOL)tableView:(UITableView *)tableView canMoveRowAtIndexPath:(NSIndexPath *)indexPath {
    // Return NO if you do not want the item to be re-orderable.
    return YES;
}


#pragma mark -
#pragma mark Table view delegate

- (void)ViewingTransactionDidFinish:(ViewTransaction *)controllerVT {
	[self dismissModalViewControllerAnimated:YES];
}

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
	[[NSUserDefaults standardUserDefaults] setObject:[displayedTransactions objectAtIndex:indexPath.row] forKey:@"Transaction"];
	
	ViewTransaction *controllerVT = [[ViewTransaction alloc] initWithNibName:@"ViewTransaction" bundle:nil];
	controllerVT.delegate = self;
	
	controllerVT.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal;
	[self presentModalViewController:controllerVT animated:YES];
	
	[controllerVT release];
	[self.tableView deselectRowAtIndexPath:indexPath animated:NO];
}

#pragma mark -
#pragma mark Memory management

- (void)didReceiveMemoryWarning {
    // Releases the view if it doesn't have a superview.
    [super didReceiveMemoryWarning];
    
    // Relinquish ownership any cached data, images, etc that aren't in use.
}

- (void)viewDidUnload {
	self.mySearchBar = nil;
    self.transactions = nil;
    self.displayedTransactions = nil;
}


- (void)dealloc {
	[tableView release];
	[mySearchBar release];
    [super dealloc];
}

@end
 
Have you wired up your UITableView's delegate outlet to your controller in the xib?

As an aside, your controller seems to be doing far too much. Does your app have a clear domain model layer? You should try not to let model code leak into your controllers, all they should be doing is mediating between the view and model layers.
 
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