iOS Xcode Error

[rebner]

Hello, I am new to Xcode and I keep getting this error and I am not quite sure what it means and how to fix it


2014-01-26 00:23:16.183 SidebarDemo[677:70b] *** Assertion failure in -[UITableView dequeueReusableCellWithIdentifier:forIndexPath:], /SourceCache/UIKit_Sim/UIKit-2903.23/UITableView.m:5261
2014-01-26 00:23:16.186 SidebarDemo[677:70b] *** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'unable to dequeue a cell with identifier map - must register a nib or a class for the identifier or connect a prototype cell in a storyboard'
*** First throw call stack:
(
0 CoreFoundation 0x0222a5e4 __exceptionPreprocess + 180
1 libobjc.A.dylib 0x016a48b6 objc_exception_throw + 44
2 CoreFoundation 0x0222a448 +[NSException raise:format:arguments:] + 136
3 Foundation 0x01077fee -[NSAssertionHandler handleFailureInMethodbject:file:lineNumber:description:] + 116
4 UIKit 0x002e9ed3 -[UITableView dequeueReusableCellWithIdentifier:forIndexPath:] + 170
5 SidebarDemo 0x0000d6e9 -[SidebarViewController tableView:cellForRowAtIndexPath:] + 233
6 UIKit 0x002f461f -[UITableView _createPreparedCellForGlobalRow:withIndexPath:] + 412
7 UIKit 0x002f46f3 -[UITableView _createPreparedCellForGlobalRow:] + 69
8 UIKit 0x002d8774 -[UITableView _updateVisibleCellsNow:] + 2378
9 UIKit 0x002ebe95 -[UITableView layoutSubviews] + 213
10 UIKit 0x00270267 -[UIView(CALayerDelegate) layoutSublayersOfLayer:] + 355
11 libobjc.A.dylib 0x016b681f -[NSObject performSelector:withObject:] + 70
12 QuartzCore 0x029ed2ea -[CALayer layoutSublayers] + 148
13 QuartzCore 0x029e10d4 _ZN2CA5Layer16layout_if_neededEPNS_11TransactionE + 380
14 QuartzCore 0x029e0f40 _ZN2CA5Layer28layout_and_display_if_neededEPNS_11TransactionE + 26
15 QuartzCore 0x02948ae6 _ZN2CA7Context18commit_transactionEPNS_11TransactionE + 294
16 QuartzCore 0x02949e71 _ZN2CA11Transaction6commitEv + 393
17 QuartzCore 0x02a06430 +[CATransaction flush] + 52
18 UIKit 0x00221dc9 _afterCACommitHandler + 131
19 CoreFoundation 0x021f24ce __CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ + 30
20 CoreFoundation 0x021f241f __CFRunLoopDoObservers + 399
21 CoreFoundation 0x021d0344 __CFRunLoopRun + 1076
22 CoreFoundation 0x021cfac3 CFRunLoopRunSpecific + 467
23 CoreFoundation 0x021cf8db CFRunLoopRunInMode + 123
24 GraphicsServices 0x027c59e2 GSEventRunModal + 192
25 GraphicsServices 0x027c5809 GSEventRun + 104
26 UIKit 0x00205d3b UIApplicationMain + 1225
27 SidebarDemo 0x0000c76d main + 141
28 libdyld.dylib 0x0386a70d start + 1
)
libc++abi.dylib: terminating with uncaught exception of type NSException
(lldb)



Thank you to all who help in advance!

 

[MacMan988]

What do you have in the

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath

method?

 

[rebner]

What do you have in the

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath

method?

I have:

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    NSString *CellIdentifier = [self.menuItems objectAtIndex:indexPath.row];
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier forIndexPath:indexPath];
    
    return cell;
}

 

[robbieduncan]

Have you created a cell with that identifier?

 

[Duncan C]

I have:

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    NSString *CellIdentifier = [self.menuItems objectAtIndex:indexPath.row];
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier forIndexPath:indexPath];
    
    return cell;
}

Your code suggests that you are using a different identifier for each cell in your table view. That's wrong, and a bad idea even if it's intentional.

The more often the table view is able to recycle an already-built cell, the faster and more memory efficient your table view will be.

You want a unique identifier for each unique TYPE of cell in your table view. If you have 3 sections of cells, say and the first section displays pairs of pictures, the second section displays 3 labels, and the third section displays a larger picture and a text view, you would have a unique identifier for each of the 3 types of cells.

Where are your cells defined? What identifier are you using?

 

[rebner]

Your code suggests that you are using a different identifier for each cell in your table view. That's wrong, and a bad idea even if it's intentional.

The more often the table view is able to recycle an already-built cell, the faster and more memory efficient your table view will be.

You want a unique identifier for each unique TYPE of cell in your table view. If you have 3 sections of cells, say and the first section displays pairs of pictures, the second section displays 3 labels, and the third section displays a larger picture and a text view, you would have a unique identifier for each of the 3 types of cells.

Where are your cells defined? What identifier are you using?

I am new to all of this and was following a tutorial on creating a side view menu.

This is what the storyboard and delegates look like:

My full code for the MainViewController.m is located here:
http://pastebin.com/avAEAduD

 

[Duncan C]

I am new to all of this and was following a tutorial on creating a side view menu.

This is what the storyboard and delegates look like:
Image

My full code for the MainViewController.m is located here:
http://pastebin.com/avAEAduD

What tutorial? (link?)

I'm not going to download your code. That sounds too much like work.

 

[rebner]

What tutorial? (link?)

I'm not going to download your code. That sounds too much like work.

Here's the link to the tutorial:

http://www.appcoda.com/ios-programming-sidebar-navigation-menu/