How to add contact string from one array to another

Question

I have a array which stores all the contacts from the phone. I have a UITableView in which i want to display all the contacts. I was having trouble displaying them in the table view o i created a new array, and used the below code to loop through the contacts array and fetch strings from it and store them in the new array (contactsNew)

for (CNContact *contact in contacts)
    {
        NSString *string = [formatter stringFromContact:contact];
        [contactsNew addObject:string];
        NSLog(@"contact = %@", string);
    }

The issue is all the contacts are displayed in the log, but i am still not able to display the contacts in table view.

- (NSInteger)tableView:(UITableView *)tableView    
numberOfRowsInSection:(NSInteger)section
{
return [contactsNew count];
}

- (UITableViewCell *)tableView:(UITableView *)tableView    
cellForRowAtIndexPath:(NSIndexPath *)indexPath
{

static NSString *simpleTableIdentifier = @"SimpleTableCell";

UITableViewCell *cell = [tableView   
dequeueReusableCellWithIdentifier:simpleTableIdentifier];

if (cell == nil) {
    cell = [[UITableViewCell alloc]   
initWithStyle:UITableViewCellStyleDefault   
reuseIdentifier:simpleTableIdentifier];
}
cell.textLabel.text = [contactsNew objectAtIndex:indexPath.row];
return cell;
}

I have checked the values of 'string' variable and the number and content being added to the contactsNew array, and everything looks fine.

Also can i use something else in place of:

cell.textLabel.text = [contactsNew objectAtIndex:indexPath.row];

So that i can directly use the contacts array instead of creating a new array. Thanks in advance.

@Tejas please reload tableview after some delay like code in my ans. — Vvk, Jan 28 '16 at 07:23

score 1 · Answer 1 · edited Jan 29 '16 at 05:51

1

Try this

for (CNContact *contact in contacts)
{
        NSString *string = [formatter stringFromContact:contact];
        [contactsNew addObject:string];
        NSLog(@"contact = %@", string);
}
[tableview reloadData];

edited Jan 29 '16 at 05:51

Mayank Patel

3,868
10
36
59

answered Jan 28 '16 at 07:01

Yagnesh Dobariya

2,241
19
29

score 1 · Answer 2 · answered Jan 28 '16 at 07:05

You need to reload tableView after creating array so use [tableView reloadData] after for loop

for (CNContact *contact in contacts)
{
    NSString *string = [formatter stringFromContact:contact];
    [contactsNew addObject:string];
    NSLog(@"contact = %@", string);
}

[tableview reloadData]; //Add this line

Hope this will works.

score 1 · Answer 3 · answered Jan 28 '16 at 07:18

you need to reload tableview after some delay. use like this

 for (CNContact *contact in contacts)
{
    NSString *string = [formatter stringFromContact:contact];
    [contactsNew addObject:string];
    NSLog(@"contact = %@", string);
}

//  add after Delay 0.5 if its not worked then 1.0

dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(0.5 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
    [tableview reloadData];
});

score 1 · Answer 4 · edited May 03 '16 at 12:12

1

you have to reload your table on main thread after you fetch the contacts... like:- dispatch_async(dispatch_get_main_queue(), ^{ [_table reloadData]; });

...and for your table view write

cell.textLabel.text = [contactsNew objectAtIndex:indexPath.row]valueForKey:@"keys";

...provide the key here.

edited May 03 '16 at 12:12

CinCout

9,486
12
49
67

answered May 03 '16 at 08:03

Amrut Gaikwad

59
2
11

score 0 · Answer 5 · answered Jan 28 '16 at 07:15

Here are few points you need to check to resolve your issue :

First thing you need to check is weather tableview methods called once after you added values to new Array ? If no than try reload table view after you are adding values to new array.
If it calls correctly after adding values to new array try to NSLog values in cellForRowAtIndexPath method

Hope it will help you.

How to add contact string from one array to another

5 Answers5