how to remove the array values when table view cell is not selected in objective c?

Question

This is my code

 - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{
NSArray *selectedRows=[_mytableview indexPathsForSelectedRows];
NSMutableArray *rownumberArray=[[NSMutableArray alloc]init];
NSMutableArray *valueofselectedcell = [[NSMutableArray alloc]init];
for (int i=0; i<selectedRows.count; i++) {

    customcell *cell = (customcell *)[_mytableview cellForRowAtIndexPath:indexPath];
    NSString *test = cell.balance.text;
    [valueofselectedcell addObject:test];
    NSArray *array = [valueofselectedcell copy];
    NSNumber* sum = [array valueForKeyPath: @"@sum.self"];
    NSLog(@"the sum valuie is .... %@",sum);
    NSString *totalamount = [sum stringValue];
    _amountlabel.text=totalamount;
    NSIndexPath *path = [tableView indexPathForSelectedRow];
    NSLog(@"%@ the selected path value is",path);
}}

when the table cell values are selected the selected values are store in the valueselectedcell array it's working fine.Now how to remove the values in the array when i deselect the rows .

amit · Accepted Answer · 2017-03-30 17:58:23Z

I have not enough reputation to comment, so i'm posting it as a answer. The answer from @Dipankar Das is totally correct, i'm just trying to answer the question from OP's comment.

if unselected cell value is same to the selected value of the cell it means it will remove the selected value too in the array how to validate that.

Update didSelectRowAtIndexPath & didDeselectRowAtIndexPath method like this-

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{
NSArray *selectedRows=[_mytableview indexPathsForSelectedRows];
NSMutableArray *rownumberArray=[[NSMutableArray alloc]init];
NSMutableArray *indexofselectedcell = [[NSMutableArray alloc]init];
NSMutableArray *valueofselectedcell = [[NSMutableArray alloc]init];
for (int i=0; i<selectedRows.count; i++) {

    [indexofselectedcell addObject:indexPath];

    customcell *cell = (customcell *)[_mytableview cellForRowAtIndexPath:indexPath];
    NSString *test = cell.balance.text;
    [valueofselectedcell addObject:test];
    NSArray *array = [valueofselectedcell copy];
    NSNumber* sum = [array valueForKeyPath: @"@sum.self"];
    NSLog(@"the sum valuie is .... %@",sum);
    NSString *totalamount = [sum stringValue];
    _amountlabel.text=totalamount;
    NSIndexPath *path = [tableView indexPathForSelectedRow];
    NSLog(@"%@ the selected path value is",path);
}}


-(void)tableView:(UITableView *)tableView didDeselectRowAtIndexPath:(NSIndexPath *)indexPath{

    if ([indexofselectedcell containsObject: indexPath]) {
        NSInteger anIndex=[indexofselectedcell indexOfObject:indexPath];
        [indexofselectedcell removeObjectAtIndex:anIndex];
        [valueofselectedcell removeObjectAtIndex:anIndex];
    }
}

Dipankar Das · Accepted Answer · 2017-03-29 11:58:15Z

1

Use Tableview's didDeselectRowAtIndexPath delegate method:

-(void)tableView:(UITableView *)tableView didDeselectRowAtIndexPath:(NSIndexPath *)indexPath{
    customcell *cell = (customcell *)[_mytableview cellForRowAtIndexPath:indexPath];
    NSString *test = cell.balance.text;
    if ([valueofselectedcell containsObject: test])
    {
        [valueofselectedcell removeObject:test];
    }
}

answered Mar 29, 2017 at 11:58

Dipankar Das

7005 silver badges10 bronze badges

4 Comments

pavithra Over a year ago

one more question .if unselected cell value is same to the selected value of the cell it means it will remove the selected value too in the array how to validate that.

Dipankar Das Over a year ago

You can add indexPath of the selected cell to the valueofselectedcell array. And when user deselect any cell remove the indexpath from your array.

pavithra Over a year ago

i am new to this objective c can u please explain by sample coding.

Dipankar Das Over a year ago

Check the answer from @amit.

Collectives™ on Stack Overflow

how to remove the array values when table view cell is not selected in objective c?

2 Answers 2

1 Comment

4 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

1 Comment

4 Comments

Your Answer

Sign up or log in

Post as a guest

Related