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tableView reloadData and deselectRowAtIndexPath


tableView reloadData and deselectRowAtIndexPath

By : user2954821
Date : November 22 2020, 10:33 AM
it fixes the issue After several attempts, I've found something that works. You need to set the deselection to occur after a "delay" (of 0 seconds) in order to make sure it happens on the next draw cycle and gets animated properly.
code :
- (void)viewWillAppear:(BOOL)animated
{
    [super viewWillAppear:animated];

    NSIndexPath *indexPath = self.tableView.indexPathForSelectedRow;
    [self.tableView reloadData];
    [self.tableView selectRowAtIndexPath:indexPath animated:NO scrollPosition:UITableViewScrollPositionNone];

    [self performSelector:@selector(deselectRow) withObject:nil afterDelay:0];

}

- (void)deselectRow
{
    [self.tableView deselectRowAtIndexPath:self.tableView.indexPathForSelectedRow animated:YES];
}


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Issue with deselectRowAtIndexPath in tableView

Issue with deselectRowAtIndexPath in tableView


By : Cyril BAZIN
Date : March 29 2020, 07:55 AM
around this issue I think the general paradigm used with table views and pushing new VCs is that you deselect the table row in your viewWillAppear:animated method. Then as the VC is popped, they see which row had been used to navigate to that VC.
code :
- (void)viewWillAppear:(BOOL)animated
{
    [super viewWillAppear:animated];

    [self.myTableView deselectRowAtIndexPath:[myTableView indexPathForSelectedRow] animated:YES];

}
Why can't I call reloadData AND deselectRowAtIndexPath in viewWillAppear:animated at the same time?

Why can't I call reloadData AND deselectRowAtIndexPath in viewWillAppear:animated at the same time?


By : user3223426
Date : March 29 2020, 07:55 AM
Hope this helps When you reload a cell, it automatically gets deselected. That's because you don't set a cell's selected property to YES in tableView:cellForRowAtIndexPath:. So you will have to deal with this differently. Either identify that the cell at indexPath needs to be selected and appropriately set its selected property to YES in tableView:cellForRowAtIndexPath: or select it after you reload the data. In such case, you can execute the following methods –
code :
[self.tableView reloadRowsAtIndexPaths:[NSArray arrayWithObject:indexPath]
                      withRowAnimation:UITableViewRowAnimationNone];

[self.tableView selectRowAtIndexPath:indexPath 
                            animated:NO
                      scrollPosition:UITableViewScrollPositionNone];

[self.tableView deselectRowAtIndexPath:indexPath animated:YES];
tableview reloadData doesnt work - TableView Data are not correctly sorted

tableview reloadData doesnt work - TableView Data are not correctly sorted


By : Oskar
Date : March 29 2020, 07:55 AM
help you fix your problem Data stored in the database is not sorted by default. It is your responsibility to sort it. Depending on your data structure you can either add an index to aid in sorting or you can sort by some logical value such as name, lastSeenDate, etc.
Post the code that is retrieving the data from Core Data (probably the creation of your NSFetchedResultsController).
TableView will not update after adding new row to array [[self tableView] reloadData] doesn't work

TableView will not update after adding new row to array [[self tableView] reloadData] doesn't work


By : Miche
Date : March 29 2020, 07:55 AM
I hope this helps you . I've working on a program and I'm having issues getting a tableView to update. Pretty much I have an tableView and there is nothing but empty rows at first. Then the user hits the + sign and I PUSH a new tableview on top of the stack and the user can select from a master list of which rows they want to add to the initial table. The rows that the user picks are added to an array. When the user clicks the back button, the first table doesn't update. However, if I press the HOME key and then reload the app, the first table view displays the updated array. I have included the code from both tables and my gloabl array. , changed table 1.h to the following:
code :
@class baseTableViewViewController; @class BaseInfoDataController;

@interface baseTableViewViewController : UITableViewController <UITableViewDelegate, UITableViewDataSource>

@property (nonatomic, retain) UITableView *tableView;


@end
Generic function does not update the value of label in tableview cell after tableView.reloadData()

Generic function does not update the value of label in tableview cell after tableView.reloadData()


By : Md Shakib Hassan
Date : March 29 2020, 07:55 AM
like below fixes the issue I have a function where I am incrementing the value of the label as below , you should change your code to this.
code :
let numLikes = Int(feeds[Int((indexPath.row))].likes)!
feeds[Int((indexPath.row)).likes = String(numLikes)
buttonClicked(data: feeds[Int((indexPath.row))].likes, tableView: userProfileTableView)

func buttonClicked(data:String,tableView:UITableView) {
    let data = String(Int(data)!+1)
    print("Incremented data", data)
    tableView.reloadData()
}
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