How to refresh the uitableivew with an alertview?

Question

In the .h file:

@property (weak, nonatomic) IBOutlet UITableView *tableView;

In the .m file:

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    static NSString *simpleTableIdentifier = @"RememberedTableListCell";

    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:simpleTableIdentifier];

    if (cell == nil) {
        cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:simpleTableIdentifier];
    }

    cell.textLabel.text = [[listItems objectAtIndex:indexPath.row] objectForKey:@"word"];
    return cell;
}

- (IBAction)resetList:(UIBarButtonItem *)sender {

    UIAlertView *resetAlert = [[UIAlertView alloc] initWithTitle:@"Reset" message:@"Are you sure to reset the list?" delegate:self cancelButtonTitle:@"No" otherButtonTitles:@"Yes", nil];
    [resetAlert show];

}

- (void)alertView:(UIAlertView *)alertView didDismissWithButtonIndex:(NSInteger)buttonIndex {

    // the user clicked Yes
    if (buttonIndex == 1) {
        // reset the list

        //reload table data
        NSLog(@"button yes is clicked");

        for (NSMutableDictionary*l in listAll) {
             [l setValue:@"0" forKey:@"remembered"];
        }

        [self.tableView reloadData];
        //[[NSOperationQueue mainQueue]addOperationWithBlock:^{[self.tvRemembered reloadData];}];

        //[self.tableView reloadRowsAtIndexPaths:[self.tableView indexPathsForSelectedRows] withRowAnimation:UITableViewRowAnimationNone];


        NSLog(@"refreshing...");


    }

}

How to refresh the UITableView with an UIAlertView Delegate? I have tried reloadData: and reloadRowsAtIndexPaths: like the above. But they didn't help. Any help will be appreciated.

Put break point It may be happen your AlertView delegate is not Called. — Kirit Modi, Mar 31 '14 at 06:54
do not forget to assign alert view delegate to nil. It seems to be ios 7 bug. [Link](http://stackoverflow.com/questions/19001528/ios-7-bug-or-my-bug-in-uialertview) — Neil Galiaskarov, Mar 31 '14 at 06:54
[[NSOperationQueue mainQueue]addOperationWithBlock:^{self.table reloadData}]; Try to refresh the table view in the main thread — Danyun Liu, Mar 31 '14 at 06:55
@tipsywacky : you are using `[self.tableView beginUpdates]`, please try to comment this line and simply use `[self.tableView reloadData]` for buttonIndex one. — Himanshu Joshi, Mar 31 '14 at 07:01
try to refresh the table view in the main thread does work either. :( — tipsywacky, Mar 31 '14 at 07:06
Show us the code for `cellForRowAtIndexPath` and your declaration of tableview in `.h` — NeverHopeless, Mar 31 '14 at 07:09
at the storyboard control click dragging to the view controller. — tipsywacky, Mar 31 '14 at 07:37

iPatel · Answer 1 · 2014-03-31T07:07:02.457

2

Some time reloadData not working, so your need to reloadData with some delay of time such like,

- (void)alertView:(UIAlertView *)alertView didDismissWithButtonIndex:(NSInteger)buttonIndex {

    // the user clicked Yes
    if (buttonIndex == 1) {
        [self performSelector:@selector(reloadTableData) withObject:self afterDelay:0.20]; // set afterDelay as per your requirement.
    }
}

And in method

-(void)reloadTableData
{
    [self.tableView reloadData];
}

For more information

https://developer.apple.com/library/ios/documentation/uikit/reference/UITableView_Class/Reference/Reference.html#//apple_ref/occ/instm/UITableView/reloadData

edited Mar 31 '14 at 07:07

answered Mar 31 '14 at 06:51

iPatel

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He had used `reloadData` – Himanshu Joshi Mar 31 '14 at 06:53
nope, perform selector with delay doesn't work. but thanks for trying! – tipsywacky Mar 31 '14 at 06:59
@tipsywacky - can you please try to change `afterDelay` as like 1 sec. ? – iPatel Mar 31 '14 at 07:01
`withObject:self` to a method that does not take any parameter, what is with that ? – n00bProgrammer Mar 31 '14 at 07:23

NeverHopeless · Answer 2 · 2014-03-31T07:32:56.517

2

You should just update your data source and calling reloadData should work.

 (void)alertView:(UIAlertView *)alertView didDismissWithButtonIndex:(NSInteger)buttonIndex {

    // the user clicked Yes
    if (buttonIndex == 1) 
    {
        // TODO : Update your data source (most likely array) here.   

        NSLog(@"refreshing...");
        [self.tableView reloadData];
    }
}

Hope it helps!

EDIT

I have two comments on your updates:

You are using listItems to populate your cell.textLabel.text and objectForKey word is used. Try to update the value of key word in listItems collection. So the new value is used by your cell event.
Avoid using the same name tableView for your UITableView, as this name is used by its events. I personally either take care to use self methodology or uses a different name to avoid warning of similar instance name.

edited Mar 31 '14 at 07:32

answered Mar 31 '14 at 06:55

NeverHopeless

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From Apple Docs *The button indices start at 0* and the first button is **No** button. – Himanshu Joshi Mar 31 '14 at 06:58
Yes, I just see the OP updated the question with alertview code. – NeverHopeless Mar 31 '14 at 07:00
2

IMO it would be better to use cancelButtonIndex: if (buttonIndex != [alertView cancelButtonIndex]) { – Simon Mar 31 '14 at 07:02

score 1 · Answer 3 · answered Mar 31 '14 at 07:03

From the Apple Docs, It should not be called in the methods that insert or delete rows, especially within an animation block implemented with calls to beginUpdates and endUpdates

You have to use the reloaddata only, not the beginUpdates

- (void)alertView:(UIAlertView *)alertView didDismissWithButtonIndex:(NSInteger)buttonIndex {

    // the user clicked Yes
    if (buttonIndex == 1) {

        [self.tableView reloadData];

    }

}

score 0 · Answer 4 · answered Mar 31 '14 at 07:02

0

Trying so many things at a time not work Sometimes.

If you have proper connections of delegate & datasource of tableview than just simply : [self.tableView reloadData];

will work.

answered Mar 31 '14 at 07:02

Mayur Prajapati

5,454
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How to refresh the uitableivew with an alertview?

4 Answers4