I have a UITableView that has AllowsMultipleSelectionDuringEditing set to YES. Selecting multiple rows is a big part of my app, and it works great.
The problem is, that on one of my tableView's I don't want the user to be able to select the first 2 rows when in editing mode, so I have implemented the following:
- (BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath {
if (indexPath.row == 0 || indexPath.row ==1) {
return NO;
}//end
return YES;
}//end
This works how I thought it would, and doesn't show the red checkbox graphic or the option to re-sort the rows. BUT, I can still select those rows that are not editable, and call the indexPathsForSelectedRows method and return the indexPaths of those rows.
How can I prevent the user COMPLETELY from being able to select those rows while in editing mode, and prevent touches on those from being returned when calling indexPathsForSelectedRows? Why isn't canEditRowAtIndexPath: doing this for me?
One way to do this would be to implement – tableView:willSelectRowAtIndexPath: method and check if tableView.editing == YES then return nil for first two cells.
Something like,
- (NSIndexPath *)tableView:(UITableView *)tableView willSelectRowAtIndexPath:(NSIndexPath *)indexPath {
if (tableView.editing == YES && indexPath.row < 2 )
return nil;
return indexPath;
}
You can also set the selectionStyle of these two cells as UITableViewCellSelectionStyleNone in editing mode in cellForRowAtIndexPath method.
Did you try the following code?
tableView.allowsSelectionDuringEditing = NO;
or
tableView.allowsMultipleSelectionDuringEditing = NO;
Related
I want to do min/max (expand/collapse) button functionality.Please see bellow image for more information.Is anybody know how to develop this functionality.I have some examples but those are not like exactly what i want.Please help me to solve this problem.
I've got a similar kinda requirement few days back. I have done this using custom tableview cell.
Firstly, you have to pass the indexpath of each row to the cell. For this i have taken a property in custom tableview cell.
i.e, #property(nonatomic,assign) NSIndexPath *indexPathOfCell;
Now, you have to pass the indexpath of row in datasource method.
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath;
And you have to write a delegate method in custom tableviewcell so that when the user clicks on the min/max button you can reload that cell through this delegate call.
-(void)reloadCellWithIndexPath:(NSIndexPath*)indexPath;
You have to set the view controller as delegate for the custom tableview cell in which you are populating the table. In that class you have to maintain an NSMutableArray.
NSMutableArray *selectedIndexPaths;
When ever the reloadCellWithIndexPath gets called you can simply do same.
-(void)reloadCellWithIndexPath:(NSIndexPath*)indexPath{
if(![selectedIndexPaths containsObject:indexPath]){
[selectedIndexPaths addObject:indexPath];
}else
[selectedIndexPaths removeObject:indexPath];
[tableView reloadData];
}
In heightForRowAtIndexPath method you can change the height for a particular row.
-(CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath{
BOOL cellModeChanged = NO;
for (NSIndexPath *indexpath in selectedIndexPaths) {
if(indexpath.section == indexPath.section && indexpath.row == indexPath.row)
cellModeChanged = YES;
}
if(cellModeChanged)
return 400.0;
else
return 100.0;
}
I have a table view and don't know how to access the row number when the user presses one of the cells. The data of the table view is a small array and this is the closest I could come... In the IB, I control dragged the reusable cell to the view controller I push which works fine. I am unsure how to get the row number in a conditional like this...
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
// A bunch of stuff is before this, but not important to the question
//-- > This line if([indexPath row] == 1) This doesn't work... any ideas?
{
if(totalPoints < 10 && number != 0)
{
[self saveNumber:#"1"];
}
else if (totalPoints < 10 && attachment == 0)
{
[self saveData:#"1"];
int newPnts = totalPoints + 1;
[self savePoints:[NSString stringWithFormat: #"%d", newPnts]];
}
Thanks
It should work
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
NSLog(#"%#",indexPath.row);
if(indexPath.row==1)
{
NSLog(#"Do Somthing..");
}
else
{
NSLog(#"Do Somthing..");
}
}
the row number is [indexPath row] . in tableview you have a dataSource which save the data array used to reload table
Ok I was doing something wrong elsewhere and the view controller doesn't update it's label from the saved data. I will post a seperate question if you're interested
I have a somewhat weird issue, and I can't quite figure out what am I missing. I have a UITableView which is editable in place (i.e. when my UI is loaded, I send my table the setEditing:YES animated:YES message). The last row in the table is intended to be the "Add New" row. All rows except the last row in my table can be moved around. None of the rows can be deleted.
The rows show up correctly, and the grabbers shows up on the right side of all rows except the last row (as intended). The problem is that I am unable to move the rows. When I tap on the grabber to move the row, it kind of jiggles in place, but I can't drag it up or down. Here's the relevant snippet of code:
- (UITableViewCellEditingStyle)tableView:(UITableView *)aTableView editingStyleForRowAtIndexPath:(NSIndexPath *)indexPath {
return UITableViewCellEditingStyleNone;
}
- (BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath {
if (indexPath.row == [self.itemArray count] ) {
return NO;
}
return YES;
}
- (BOOL)tableView:(UITableView *)tableView canMoveRowAtIndexPath:(NSIndexPath *)indexPath {
if (indexPath.row == [self.itemArray count]) {
return NO;
}
return YES;
}
- (void)tableView:(UITableView *)tableView moveRowAtIndexPath:(NSIndexPath *)fromIndexPath toIndexPath:(NSIndexPath *)toIndexPath {
Item *item = [self.itemArray objectAtIndex:fromIndexPath.row];
[self.itemArray removeObjectAtIndex:fromIndexPath.row];
[self.itemArray insertObject:item atIndex:toIndexPath.row];
}
- (NSIndexPath *)tableView:(UITableView *)tableView targetIndexPathForMoveFromRowAtIndexPath:(NSIndexPath *)sourceIndexPath toProposedIndexPath:(NSIndexPath *)proposedDestinationIndexPath {
if ([proposedDestinationIndexPath row] < [self.itemArray count]) {
return proposedDestinationIndexPath;
}
NSIndexPath *betterIndexPath = [NSIndexPath indexPathForRow:[self.itemArray count]-1 inSection:0];
return betterIndexPath;
}
On trying to debug, it seems that the tableView:moveRowAtIndexPath: gets called almost immediately even as I am holding on to the grabber (i.e. I have not lifted my finger yet). Moreover, my tableView:targetIndexPathForMoveFromRowAtIndexPath:proposedDestinationIndexPath: does not get invoked at all.
Any thoughts on what am I doing wrong? Any suggestions on what I should try to fix this issue?
I had the same problem, and #wilsontgh & #Andy responses took me in the right direction. However I couldn't afford removing the needed PanRecognizer from the superview, nor disabling it in certain views.
What worked for me was to set this on the main view recognizer, which avoids cancelling touches handled to other views/recognizers.
panRecognizer.cancelsTouchesInView = NO;
I had this problem too. Check if you have a UIGestureRecognizer (for me it was a UIPanGestureRecognizer) that is attached to the UITableView's superviews. I removed it and the reordering worked.
In my case, it is the "hide nav bar on swipe" feature that caused the re-order to fail. Therefore make sure it is turned off if you need the UITableView re-order feature.
navigationController?.hidesBarsOnSwipe = false
Note that navigation controller is shared across all view controllers of the same navigation stack, therefore one screen can affect all other ones even after pushing/pop-ing operations.
I recently had the same problem and this thread pointed me in the right direction, but the better approach is to use the gesture recognizer's delegate method gestureRecognizerShouldBegin: to determine if you are in a situation where you want to process it or not.
In my situation I had a swipe gesture on a main view controller and was displaying a table in a child view controller. In gestureRecognizerShouldBegin: I return a NO when the child view controller is active, which allows the table to see every gesture and the container view controller doesn't handle anything.
The method tableView:moveRowAtIndexPath:toIndexPath: does get called immediately upon touching the control. From the UITableViewDataSource Protocol Reference:
The UITableView object sends this message to the data source when the user presses the reorder control in fromRow.
So this is expected behavior.
I believe the problem is in your tableView:targetIndexPathForMoveFromRowAtIndexPath:toProposedIndexPath:. Do you have a specific reason to include this method? Have you tried leaving it out and going with the proposed position?
For example, it seems that ([proposedDestinationIndexPath row] < [self.itemArray count]) will always return true...
In my case, the problem was in the keyboardDismissMode property.
Working with TableViews and have a two-parted question:
I have a TableView where there are only four cells with content. However the TableView continues down with about five or six more, empty, cells. Is there a way of removing these? What this would do, graphically, is remove all the lines below these 4 cells, while everything else stays the same.
Regard the following image, it has 2 populated cells and 7 extra lines below them, I want theses lines removed:
2.The four cells contain buttons. Because of this I want to remove the users ability to click/mark the entire cell. Is there such a "setting"?
Thank you, Tobias Tovedal
1.
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
// Return the number of sections.
return 1;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
// Return the number of rows in the section.
return 4;
}
2.
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
[tableView deselectRowAtIndexPath:indexPath animated:YES];
}
You have to set 0 to the size of your footer to clear those "ghost" cells.
self.myTable.tableFooterView = [[UIView alloc] initWithFrame:CGRectZero];
I am thinking of 2 ways to accomplish your first Q:
Set up TableView to be grouped and not plain (tableview will have round corners);
Make the separators color to match the background of the cells:
tableView.separatorColor = [UIColor whiteColor];// or whatever color you have
But you will have to manually add a line for each cells you are displaying.
I am looking for a way of preventing the deleting of one of my cells. (No delete button should appear next to the cell when the table view is in editing mode.)
How can this be made possible?
Implement editingStyleForRowAtIndexPath and return UITableViewCellEditingStyleNone for that row:
- (UITableViewCellEditingStyle)tableView:(UITableView *)tableView editingStyleForRowAtIndexPath:(NSIndexPath *)indexPath
{
if (indexPath.section == sss && indexPath.row == rrr)
return UITableViewCellEditingStyleNone;
else
return UITableViewCellEditingStyleDelete;
}
The accepted response works but is not the correct way to do it. There are two methods available: editingStyleForRowAtIndexPath and canEditRowAtIndexPath
editingStyleForRowAtIndexPath: Use when there are multiple different editing styles in the table
canEditRowAtIndexPath: Use when some rows should edit and some should not.
Therefore the correct way to implement your table delegate is:
- (BOOL)tableView:(UITableView *)tableView
canEditRowAtIndexPath:(NSIndexPath *)indexPath {
if (indexPath.section == sss && indexPath.row == rrr)
{
return NO;
}
return YES;
}