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POUITableView (IOS) trying to delete but never get the delete button to show up
 

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  1. POUITableView (IOS) trying to delete but never get the delete button to show up
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    <p>I know there's a lot of questions like this one out there, but I've followed a couple of them and none of them could lead me to the answer.</p> <p>Probably it's just something stupid and obvious I'm missing but I can't get it...</p> <p>So what I'm doing is, I have a normal UITableViewController. In the table I want to display all files the user downloaded via my app and give him the opportunity to delete the files as well. Everything works fine - I can list up the files, and when clicked another view opens to display the file.</p> <p>But I never can get the row to delete something. I swiped all possible ways but I never even get the delete button! I have implemented the canEditRowAtIndexPath function to make it return YES (although it shouldn't be necessary, I've made tons of apps where I deleted rows and never needed the function):</p> <pre><code>- (BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath { return YES; } </code></pre> <p>My actual delete method is implemented like this:</p> <pre><code>- (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath { if (editingStyle == UITableViewCellEditingStyleDelete) { NSError *error = [[NSError alloc] init]; NSFileManager *fileManager = [NSFileManager defaultManager]; NSString *fileName = [NSString stringWithFormat:@"%@/%@", directory, [files objectAtIndex:indexPath.row]]; BOOL success = false; if ([fileManager isDeletableFileAtPath:fileName]) { success = [fileManager removeItemAtPath:fileName error:&amp;error]; } if (success) { [tableView deleteRowsAtIndexPaths:@[indexPath] withRowAnimation:UITableViewRowAnimationFade]; [files removeObjectAtIndex:indexPath.row]; } else { [Functions msg:NSLocalizedString(@"fileCantBeDeleted", @"") title:NSLocalizedString(@"fileError", @"") delegate:nil]; if (error) { NSLog(@"Error: %@", [error localizedDescription]); } } } } </code></pre> <p>To be complete, I can give you the code of cellForRowAtIndexpath as well:</p> <pre><code>- (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]; } cell.textLabel.text = [files objectAtIndex:indexPath.row]; return cell; } </code></pre> <p>The NSArray "files" has been filled before, in the viewDidLoad method like this:</p> <pre><code>directory = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0]; files = [[NSFileManager defaultManager] contentsOfDirectoryAtPath:directory error:nil]; </code></pre> <p>Both directory and files are properties of my class. As said, the whole class is just implementing a UITableViewController. I really can't see why it wouldn't let me delete a row, but probably it's something really stupid... I just can't see it. </p> <p><strong>EDIT</strong></p> <p>Found the bug. </p> <p>This particular TableView doesn't itself implement any methods of the PKRevealController library, but it was apparently set as the frontViewController - so there happened to be a gesture on there that I didn't know of. The controller also was not intended to be used inside a PKRevealController... I just added it in a wrong way, so I wasn't aware of that either! That's also why I forgot to include it in my question.</p> <p>I found the solution here: <a href="https://github.com/pkluz/PKRevealController/issues/123" rel="nofollow">https://github.com/pkluz/PKRevealController/issues/123</a> (for if anyone else might ever run into this problem).</p> <p>Thanks for helping me anyway!</p> <p><strong>EDIT</strong></p> <p>Another possible solution I just learned about if you want to use a tableView and still keep deleting things while using a PKRevealController (without starting to get strange with UIGestureRecognizers): You can just add an edit button to trigger the view into editing mode.</p> <pre><code>self.navigationItem.rightBarButtonItem = self.editButtonItem; </code></pre> <p>This works perfectly for me.</p>
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    1. COdo you have any Swipe gestures on the current view?
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    2. CONope, no swipe gestures on there.
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    3. COif you set a breakpoint in Xcode, do *any* of the table's delegate methods hit? e.g. "`canEditRowAtIndexPath`"? remember that delegate is not necessarily the same thing as the table view data source.
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      1. USMichael Dautermann
 

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