I'm trying to delete a row using Xcode 4.2 and a storyboard. The Table is nested in a UINavigationController nested in a UITabBarController.
My UITableViewDelegate class implements the following code:
- (UITableViewCellEditingStyle)tableView:(UITableView *)tableView editingStyleForRowAtIndexPath:(NSIndexPath *)indexPath {
UITableViewCellEditingStyle result = UITableViewCellEditingStyleNone;
if ([tableView isEqual:self.tableView]==YES) {
result = UITableViewCellEditingStyleDelete;
NSLog(#"hi");
}
return result;
}
and when I swipe a row, I see the "hi" message in the log, but the row never receives a "Delete" button. Looking at sources like http://www.raywenderlich.com/5138/beginning-storyboards-in-ios-5-part-1, my
- (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath {
NSLog(#"hi2");
}
method is never called.
Thanks!
Check if method - (BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath returns YES for appropriate index paths.
Related
I added swipe to delete optionality to a table view cell by implementing
- (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath
{
// Perform the real delete action here. Note: you may need to check editing style
// if you do not perform delete only.
NSLog(#"Deleted row.");
}
- (UITableViewCellEditingStyle)tableView:(UITableView *)tableView editingStyleForRowAtIndexPath:(NSIndexPath *)indexPath
{
return UITableViewCellEditingStyleDelete;
}
This is resulting in my table loading in such a way that a delete button is immediately displayed on the left. I only want a swipe to delete option, I don't want any delete button showing when the table first loads. What do I need to change?
Remove the second function (editingStyleForRowAtIndexPath), and change the first one to the one below:
- (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath {
if (editingStyle == UITableViewCellEditingStyleDelete) {
//add code here for when you hit delete
}
}
I'm trying to implement the swipe left to display the delete button.
The cell moves left, but there are no visible buttons. Why does this happen? What is the solution?
To be clear, I have searched on StackOverflow and tried at least a dozen posted "solutions", but none of them have worked for me.
Thanks in advance.
I tried using the following code, which does seem to make the table cell move, but the log does not show NSLog(#"commitEditingStyle");. Why does this happen?
// Swipe to delete.
- (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath
{
NSLog(#"commitEditingStyle");
if (editingStyle == UITableViewCellEditingStyleDelete) {
NSLog(#"UITableViewCellEditingStyleDelete");
[listData removeObjectAtIndex:indexPath.row];
[self.tableView deleteRowsAtIndexPaths:#[indexPath] withRowAnimation:UITableViewRowAnimationFade];
[self.tableView reloadData];
}
}
And I have tried adding:
- (BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath
{
return YES;
}
Here is a screenshot:
The problem was that the table size was larger than my screen size. The solution is to set the constraints to match the width of the view.
// During startup (-viewDidLoad or in storyboard) do:
self.tableView.allowsMultipleSelectionDuringEditing = NO;
- (BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath {
// Return YES if you want the specified item to be editable.
return YES;
}
// Override to support editing the table view.
- (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath {
if (editingStyle == UITableViewCellEditingStyleDelete) {
//add code here for when you hit delete
}
}
I have a UItableViewController inside a containerView and when I touch in one of my cells, it doesn't call didSelectRowAtIndexPath. However, if I long press, this method is called normally.
I've used storyboard and my delegate and datasource are my tableViewController.
Here is my tableViewController code:
#pragma mark - Table view data source
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
return nuberOfSections;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
return nuberOfSections;
}
- (CGFloat)tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section
{
return heightForHeader;
}
- (CGFloat)tableView:(UITableView *)tableView heightForFooterInSection:(NSInteger)section {
return 0.01f;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{
MWSideMenuTableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:#"menuCell"];
// cell settups
return cell;
}
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{
[tableView deselectRowAtIndexPath:indexPath animated:YES];
// Some action done
}
There could be three reasons
delegate is not set
Could be a typo in the didselectrowatindexpath
gesture recognizers might be used in container VC or containing VC
same problem happened with me because I have added a tap gesture recogniser over it. `
If you have used any gesture try removing it
` and check if it causing the problem.
I have UITableview and I dont need to edit or delete the cells. So requirement is just view only. But when I swipe on a cell a red delete button appears. Please help how can I disable it.
You have a few options depending on your needs. If you don't need any cell editing of any kind then simply add this method:
- (BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath {
return NO;
}
Editing defaults to YES so you need to turn it off.
IF you need some editing but no deletion then implement:
- (UITableViewCellEditingStyle)tableView:(UITableView *)tableView editingStyleForRowAtIndexPath:(NSIndexPath *)indexPath {
return UITableViewCellEditingStyleNone;
}
Also, if you don't need either insert or delete, remove the tableView:commitEditingStyle:forRowAtIndexPath: method that may have been added automatically.
Add the following method to your UITableViewDataSource implementation:
- (BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath {
return NO;
}
I'm having the following problem.
I have an app using a UITableView with a custom UITableViewCell. Because of the specs of the app, I need it to be in edit mode always, so on the viewDidLoad I wrote this:
- (void)viewDidLoad
{
MainTableView.backgroundColor = [UIColor colorWithPatternImage:[UIImage imageNamed:#"compose_background.png"]];
[MainTableView setAllowsSelectionDuringEditing: TRUE];
[MainTableView setEditing: TRUE];
[super viewDidLoad];
}
Also, I've implemented the following methods:
- (UITableViewCellEditingStyle) tableView:(UITableView *)tableView editingStyleForRowAtIndexPath:(NSIndexPath *)indexPath
- (BOOL) tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath
- (void) tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath
And several more, but the problem persists and when I swipe a cell the delete button doesn't shows up. Any pointers would be highly appretiated.
- (UITableViewCellEditingStyle) tableView:(UITableView *)tableView editingStyleForRowAtIndexPath:(NSIndexPath *)indexPath must return UITableViewCellEditingStyleDelete for each row you want to delete. Swipe-to-delete is disabled in favor of this method when in editing mode.
I don't think there is anyway for the standard swipe to delete to work while the table view is in editing mode, you'd have to respond to gestures and add your own delete button.