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POAdding a delegate to a custom UITableViewCell (bad access error)
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  1. POAdding a delegate to a custom UITableViewCell (bad access error)
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    copied!<p>I'm trying to add a custom delegate to a custom UITableViewCell of mine.</p> <p>On this cell I have a button which need to fire a method in the ViewController where the UITableView is located on.</p> <p>I'm doing all the usual steps to add a custom delegate but for some reason when I open the VC on runtime the app crashes and gives me a bad access error.</p> <p>When I comment all the delegate code it works properly so my guess is that something is wrong the way I add my delegate. When I leave my id property uncommented it seems to crash.</p> <p>I implement the protocol in the VC. I did assign the delegate to the cell in the cellForRowAtIndexPath:. All the delegate methods are in place. I've been using similar constructions in other classes but never in a subclass of UITableViewCells before.</p> <p>Before I post some code I would like to know if someone encountered this bug before. If and how he solved it or if it is even possible to make a custom delegate for an UITableViewCell subclass.</p> <hr> <p>EDIT:</p> <p>My customCell.h</p> <pre><code>#import &lt;UIKit/UIKit.h&gt; @class MyTableViewCell; @protocol MyTableCellProtocoll &lt;NSObject&gt; -(void) didPressButton:(MyTableViewCell *)theCell; @end @interface MyTableViewCell : UITableViewCell { UIButton *myButton; id&lt;MyTableCellProtocoll&gt; delegationListener; } @property (nonatomic,retain) UIButton *myButton; @property (nonatomic,assign) id&lt;MyTableCellProtocoll&gt; delegationListener; - (void) buttonAction; @end </code></pre> <p>.m</p> <pre><code>#import "MyTableViewCell.h" @implementation MyTableViewCell @synthesize myButton; @synthesize delegationListener; - (id)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier { self = [super initWithStyle:style reuseIdentifier:reuseIdentifier]; if (self) { // Initialization code self.myButton = [UIButton buttonWithType:UIButtonTypeCustom]; self.myButton.backgroundColor = [UIColor clearColor]; self.myButton.frame = CGRectMake(5, 0, 10, 32); self.myButton.titleLabel.adjustsFontSizeToFitWidth = YES; [self.myButton addTarget:self action:@selector(buttonAction) forControlEvents:UIControlEventTouchUpInside]; [self.contentView addSubview:self.myButton]; } return self; } - (void) buttonAction { NSLog(@"buttonpressed"); [self.delegationListener didPressButton:self]; } @end </code></pre> <p>MyVC implements the delegate as proper in the .h</p> <pre><code>@interface MyVC : UIViewController &lt;UITableViewDelegate, UITableViewDataSource, MyTableCellProtocoll&gt; </code></pre> <p>and it also uses the one delegatemethod from MyTableCellProtocoll in the .m</p> <pre><code>- (void)didPressButton:(MyTableViewCell *)theCell { NSLog(@"didPressButton"); } </code></pre> <p>I assign the delegate in the cellForRowAtIndexPath:</p> <pre><code>- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { static NSString *CellIdentifier = @"Cell"; MyTableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier]; if (cell == nil) { cell = [[[MyTableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease]; cell.delegationListener = self; } return cell; } </code></pre> <p>These are all locations I use for the delegate. What I want it to do is change the buttontitle and insert some rows after that cell (modified duplicates)</p> <p>Hope this will clear things up a bit more. </p> <hr> <p>EDIT2: The button method is not being called at start as was metioned in the comment section. Editted code with logcode.</p> <hr> <p>EDIT3: There is nothing wrong with the button. It is the delegate property that is messed up somewhere. With breakpoints and logs and commenting i made sure of that.</p> <p>The code is being run up to the last element in my datasource list then it crashes. 1 step closer to the problem now i suppose.</p> <hr> <p>FINAL EDIT: Ok, it seems like all of the delegates and buttons and other components weren't the problem at all. It was the heightForRowAtIndexPath: screwing me over. Thanks for all of your support anyhow!</p>
 

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