Searchbar cause app to crash in my ios library - ios

Question

I'm working on an external dynamic cocoa library (dylib) that at some point provides a view with a tableview and a search bar.
I have this on the on create
- (void)viewDidLoad {
[super viewDidLoad];
NSBundle *frameworkBundle = [NSBundle bundleForClass:[self class]];
UINib *nib = [UINib nibWithNibName:CONTACT_CELL bundle:frameworkBundle];
[[self tableView] registerNib:nib forCellReuseIdentifier:CONTACT_CELL];
[self readContacts];
}
and for my tablerow delegate
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
ContactCell *cell = [tableView dequeueReusableCellWithIdentifier:CONTACT_CELL];
if (cell == nil)
{
NSLog(#"Cell was empty!");
}
Contact *c = [contacts objectAtIndex:[indexPath row]];
[[cell labelName] setText: [c getName]];
[[cell labelPhone] setText: [c getPhone]];
return cell;
}
problem is that when i click on the searchbar the app chrashes because:
* Assertion failure in -[UISearchResultsTableView
_configureCellForDisplay:forIndexPath:], /BuildRoot/Library/Caches/com.apple.xbs/Sources/UIKit_Sim/UIKit-3512.30.14/UITableView.m:7962
2016-02-19 17:07:00.404 HostApp[2233:20181] * Terminating app due to
uncaught exception 'NSInternalInconsistencyException', reason:
'UITableView (; layer = ; contentOffset: {0, 0}; contentSize: {414, 528}>)
failed to obtain a cell from its dataSource ()'
if I use
[tableView dequeueReusableCellWithIdentifier:CONTACT_CELL forIndexPath: indexPath];
* Assertion failure in -[UISearchResultsTableView dequeueReusableCellWithIdentifier:forIndexPath:],
/BuildRoot/Library/Caches/com.apple.xbs/Sources/UIKit_Sim/UIKit-3512.30.14/UITableView.m:6564
2016-02-19 17:37:08.254 HostApp[2691:28849] * Terminating app due to
uncaught exception 'NSInternalInconsistencyException', reason: 'unable
to dequeue a cell with identifier ContactCell - must register a nib or
a class for the identifier or connect a prototype cell in a
storyboard'

Answer 1

You can't return nil in cellForRowAtIndexPath.
You can either use :
[tableView dequeueReusableCellWithIdentifier:CONTACT_CELL forIndexPath: indexPath];
Which always returns a cell, or manually alloc it :
-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
ContactCell *cell = [tableView dequeueReusableCellWithIdentifier:CONTACT_CELL];
if (cell == nil)
{
NSLog(#"Cell was empty!");
cell = [UITableViewCell alloc] initWithStyle:<#(UITableViewCellStyle)#> reuseIdentifier:<#(nullable NSString *)#>];
}
Contact *c = [contacts objectAtIndex:[indexPath row]];
[[cell labelName] setText: [c getName]];
[[cell labelPhone] setText: [c getPhone]];
return cell;
}

Answer 2

check
1.search bar delegate for what you return
-(BOOL)searchBarShouldBeginEditing:(UISearchBar *)searchBar{}
2. check number of rows in section tableview deleage

Answer 3

Try like this
ItemCell is my nibName not an identifier
- (void)viewDidLoad
{
[super viewDidLoad];
UINib *nib = [UINib nibWithNibName:#"ItemCell" bundle:nil];
[[self tableView] registerNib:nib forCellReuseIdentifier:#"ItemCell"];
}
-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
// Create an instance of ItemCell
PointsItemCell *cell = [tableView dequeueReusableCellWithIdentifier:#"ItemCell"];
return cell;
}

Answer 4

The problem was I registered the nib for the "normal" tableView, but not for the searchdisplaycontroller's tableView.
Using this viewDidLoad will fix the problem.
- (void)viewDidLoad {
[super viewDidLoad];
NSBundle *frameworkBundle = [NSBundle bundleForClass:[self class]];
UINib *nib = [UINib nibWithNibName:CONTACT_CELL bundle:frameworkBundle];
[[self tableView] registerNib:nib forCellReuseIdentifier:CONTACT_CELL];
[self.searchDisplayController.searchResultsTableView registerNib:nib forCellReuseIdentifier:CONTACT_CELL];
[self readContacts];
}