When I add a new row in my UITableView, it adds a duplicate row. The first row works perfectly, the second row works perfectly, but the third row is a duplicate of the second row.
Why is this?
Here is my code:
- (void)addExerciseToCustomTable
{
// save my parametr from DB
[self saveExerciseInCacheTableApproach:_approach andRepeat:_repeat andWeight:_weight andTimer:_timer andIndex:_index];
//update position in my TableView from db( 1....10)
[self updatePositionInCustomViewForAddRow:[NSString stringWithFormat:#"%d", ([_exerciseForGroupWithSelect count] - 1) ]];
_exerciseForGroupWithSelect = [self loadExerciseFromExerciseCacheWithGroup:groupExerciseId];
//load new array after update position
[_customExerciseTable beginUpdates];
NSIndexPath *indexPath = [NSIndexPath indexPathForRow:([_exerciseForGroupWithSelect count] - 1) inSection:0];
[_customExerciseTable insertRowsAtIndexPaths:#[indexPath] withRowAnimation:UITableViewRowAnimationLeft];
[_customExerciseTable endUpdates];
}
solved this problem - after edit my table i update my DB
now - i load my nutablearray and work with him, after edit complete, save array in DB
it's work perfect
Related
This question already has answers here:
How to insert new cell into UITableView in Swift
(5 answers)
Closed 7 years ago.
I am making an app that is using core data, and I have 2 textfields and a button saying "save data".So I want when the button is pressed the data from the textfields is displayed on a new row in a table view controller.In Xcode using Objective C.
Image of views - http://i.stack.imgur.com/7UrMO.png
Thanks
Beginner to programming
Follow these steps:
Step 1: Update your model (used to draw your cell) with textFields text. Something like this:
[self.items addObject:<Object_With_Both_TextFields_Text>]
Step 2: On button tap, insert a new row like this:
NSIndexPath *newIndexPath = [NSIndexPath indexPathForRow:self.items.count - 1 inSection:0];
[self.tableView beginUpdates];
[self.tableView insertRowsAtIndexPaths:[NSArray arrayWithObject:newIndexPath] withRowAnimation:UITableViewRowAnimationBottom];
[self.tableView endUpdates];
Just add the new data from text fields to your table view data source (mostly this will be a mutable array or dictionary). Then call reloadData on your table view.
Add the entry from text fields into your table view data source.
[yourMutableArray addObject:[textField1 text]];
call [yourTableView reloadData];
When you press 'save data', add content that you want to display into the your_array that you are using to display the tableview.
[your_array addObject:your_textfield_string];
After that reload the table again using [tableview reloadData]:
dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
[tableview reloadData];
dispatch_async(dispatch_get_main_queue(), ^{
////TO SCROLL THE TABLE TO NEWLY ADDED ROW
int lastRowNumber = [tableview numberOfRowsInSection:0] - 1;
NSIndexPath* ip = [NSIndexPath indexPathForRow:lastRowNumber inSection:0];
[tableview scrollToRowAtIndexPath:ip atScrollPosition:UITableViewScrollPositionTop animated:NO];
});
});
I am building an IOS application where I am using tableView. Now when I reached to last cell I load +10 data from localDB.
After fetching the data I reloaded the tableView that I don't need in place of reload I want to used updated tableView. for that SOF suggested me below code.
[[self tableView] beginUpdates];
[[self tableView] reloadRowsAtIndexPaths:____ withRowAnimation:UITableViewRowAnimationAutomatic];
[[self tableView] endUpdates];
I don't what should be there in reloadRowsAtIndexPaths value. Please can some help me in understanding this above line of code.
You can get the indexPath of the last row in last section like this.
NSIndexPath *indexPath = [NSIndexPath indexPathForRow:(numberOfRowsInLastSection - 1) inSection:(numberOfSections - 1)];
Here, numberOfSections is the value you return from numberOfSectionsInTableView: method. And, numberOfRowsInLastSection is the value you return from numberOfRowsInSection: method for the last section in the table view.
You don't need to reload cells, because there are no cells after your 10th cell. You want your users to see more cells when they get to the last one as in a news app. The solution is to inset more rows below, here is how:
1- create the rows you want to insert
NSMutableArray *newRows = #[[NSIndexPath indexPathForRow:10 inSection:0]];
3- update your data source array
2- [self.tableView insertRowsAtIndexPaths: newRows, UITableViewRowAnimationAutomatic];
Thanks in advance. I'm dealing with a single UITableView which is divided into different sections. Users can add or delete cells only from specific sections. The information displayed in the UITableView is stored in an array where each object represents a section:
eg: tableItemsArray = ((arrayForSection1), (arrayForSection2), (arrayForSection3))
I have the animation set up to handle the delete as follows:
[tableView deleteRowsAtIndexPaths:#[indexPath]
withRowAnimation:UITableViewRowAnimationRight];
I then programmatically remove the item from the array to remove it from the data model. However I am having difficulty in how to insert the cell in an animated form.
Currently I am running the current pseudo-algorithm:
Check item isn't anywhere in the array
Add item to array into a specific section
sort this section of the array alphabetically
reload the data
Update
When a new item is added to the array it is stored in a string to keep record of the new item. Once the array has been resorted I iterate through the array of cells to find its indexPath, then I delete the string (to prevent recursive insertion animations) and perform the animation, however the code doesn't animate its insertion into the table. I wondered whether that maybe the animation code (as below) wasn't working as I was using [tableView reloadData]?
// For Each Section in the table:
for (NSMutableArray *object in sectionsInTable) {
// For Each Cell in a section (Cells are stored in an array in index 1)
for (NSString *label in [object objectAtIndex:1]) {
if ([label isEqualToString:_insertedObject]) {
// New item
_insertedObject = Nil;
// animate addition
[self.labelListTableView beginUpdates];
[self.labelListTableView insertRowsAtIndexPaths:[NSArray arrayWithObject:[NSIndexPath indexPathForRow:[[object objectAtIndex:1] indexOfObject:label] inSection:[sectionsInTable indexOfObject:object]]] withRowAnimation:UITableViewRowAnimationBottom];
[self.labelListTableView endUpdates];
}
}
}
Any ideas why the animation isn't working?
Thanks
D
Seems that the [tableView reloadData] was preventing the animation.
// Annimate the new Item
// For Each Section in the table:
for (NSMutableArray *object in sectionsInTable) {
// For Each Cell in a section:
for (NSString *cell in [object objectAtIndex:1]) {
if ([cell isEqualToString:_insertedObject]) {
// New item
_insertedObject = Nil;
// animate addition
[tableView beginUpdates];
NSInteger section = [sectionsInTable indexOfObjectIdenticalTo:object];
NSInteger row = [[object objectAtIndex:1] indexOfObjectIdenticalTo:cell];
NSIndexPath *newIndexPath = [NSIndexPath indexPathForRow:row inSection:section];
[tableView insertRowsAtIndexPaths: [NSArray arrayWithObject:newIndexPath] withRowAnimation:UITableViewRowAnimationBottom ];
[tableView endUpdates];
}
}
}
I am a new IOS Programmer, and i am having a issue.
I have a UITableView with 2 sections, one then is static, and another one is dynamical.
In specific actions i need to add new rows for the second section in runtime..
I know how to manage a UITableView , but not a specific section
Could you help me please?
Best Regards you all
You can use insertRowsAtIndexPaths: method of UITableView
//Update data source with the object that you need to add
[tableDataSource addObject:newObject];
NSInteger row = //specify a row where you need to add new row
NSInteger section = //specify the section where the new row to be added,
//section = 1 here since you need to add row at second section
NSIndexPath *indexPath = [NSIndexPath indexPathForRow:row inSection:section];
[self.tableView beginUpdates];
[self.tableView insertRowsAtIndexPaths:#[indexPath] withRowAnimation:UITableViewRowAnimationRight];
[self.tableView endUpdates];
You can use the same method insertRowAtIndexPath like
// Add the items into your datasource object first. Other wise you will end up with error
// Manage the number of items in section. Then do
NSIndexPath *indexPath1 = [NSIndexPath indexPathForRow:0 inSection:1];
NSIndexPath *indexPath2 = [NSIndexPath indexPathForRow:1 inSection:1];
[self.tableView insertRowsAtIndexPaths:#[indexPath1,indexPath2] withRowAnimation:UITableViewRowAnimationTop];
This will insert two rows to the section1. Remember before doing this you have manage your datasource object.
Swift 3 version
// Adding new item to your data source
dataSource.append(item)
// Appending new item to table view
yourTableView.beginUpdates()
// Creating indexpath for the new item
let indexPath = IndexPath(row: dataSource.count - 1, section: yourSection)
// Inserting new row, automatic will let iOS to use appropriate animation
yourTableView.insertRows(at: [indexPath], with: .automatic)
yourTableView.endUpdates()
you can do this by using scrolltoinfinite method but before that u have to import 3rd party svpulltorefresh
[self.tableViewMixedFeed addInfiniteScrollingWithActionHandler:^{
CGFloat height = self.tableViewMixedFeed.frame.size.height;
CGFloat contentYoffset = self.tableViewMixedFeed.contentOffset.y;
CGFloat distanceFromBottom = self.tableViewMixedFeed.contentSize.height - contentYoffset;
if(distanceFromBottom<contentYoffSet)
{
[weak insertRowAtBottom];
}
}];
-(void)insertRowAtBottom
{
[self.tableViewMixedFeed beginUpdates];
[self.tableViewMixedFeed insertRowsAtIndexPaths:indexPaths1 withRowAnimation:UITableViewRowAnimationTop];
[self.tableViewMixedFeed endUpdates];
[self.tableViewMixedFeed.infiniteScrollingView stopAnimating];
}
here indexpaths1 is the array of indexpaths of next cells which u want to insert in a table .
try using loop to get the next set of arrays and store them into indexpaths1.
[self.tableView insertRowsAtIndexPaths:#[indexPath1,indexPath2] withRowAnimation:UITableViewRowAnimationTop];
USE THIS METHOD..
I am using [tableview reloadData]; to reload the data in my UItableView, however when I use this I loose my highlight on my UItableVewCell.
I would like to know the best way to reinstate this highlight.
I set a tempIndexPath when the user selects the cell they edit the information then I call reloadData, then inside cellForRowAtIndexPath I use this code to re-highlight the cell however its not working.
if ([tempIndexPath isEqual:indexPath]) {
cell.selected = YES;
}
This code keeps the highlighted selection, and is safe with resorting/inserts/repositioning since it keeps a reference to the underlying object from the model, instead of the index path. It also scrolls to the selection, which is helpful when the updated model causes the selection to be moved out of the current scroll position's frame.
- (void) tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
//Save the selected object at this row for maintaining the highlight later in reloadData
_selectedItem = [_items objectAtIndex:indexPath.row];
}
- (void) reloadData
{
[_itemsTable reloadData];
//Reselect and scroll to selection
int numItems = _items.count;
for (int i = 0; i < numItems; i++) {
NSDictionary *dict = [_numItems objectAtIndex:i];
if (dict == _selectedItem) {
//This is more reliable than calling the indexPathForSelectedRow on the UITableView,
// since the selection is cleared after calling reloadData
NSIndexPath *selectedIndexPath = [NSIndexPath indexPathForRow:i inSection:0];
[_itemsTable scrollToRowAtIndexPath:selectedIndexPath atScrollPosition:UITableViewScrollPositionMiddle animated:NO];
[_itemsTable selectRowAtIndexPath:selectedIndexPath animated:FALSE scrollPosition:UITableViewScrollPositionNone];
break;
}
}
}
Save the selected row, reload your table view's data and select the row again.
NSIndexPath* selectedIndexPath = [tableView indexPathForSelectedRow];
[tableView reloadData];
[tableView selectRowAtIndexPath:selectedIndexPath animated:NO scrollPosition:UITableViewScrollPositionNone];
You should know that this is dangerous, because if new items were added to the table view before the selected row, the selection will not be the correct cell. You should calculate how many rows were inserted before the row and adjust the selectedIndexPath accordingly.