ios 7 tableView didSelectRowAtIndexPath shows blank data on first selection - iphone

Question

I have some apps designed for iOS 6 and today I went to upgrade them to iOS 7.
They are a simple table view lists and when a record is selected it displays details about that row on another screen. This worked flawlessly in iOS 6. With iOS 7 when I select a row it shows a blank data page on the first selection. If I then go back to the list and reselect the item it then displays the proper data.. After this first blank display it will work fine for any other records..
I am racking my brain and can not for the life of me figure out why this is happening.
Any ideas?
CODE:
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
Statutes *statute = (Statutes *)[self.statutes objectAtIndex:indexPath.row];
if(self.detailView == nil) {
DetailViewController *viewController = [[DetailViewController alloc] initWithNibName:#"DetailViewController" bundle:nil];
self.detailView = viewController;
[viewController release];
}
[self.navigationController pushViewController:self.detailView animated:YES];
self.detailView.title = [statute myStatute];
[self.detailView.statuteFullText setText:[statute myDescription]];
[self.detailView.statuteTitle setText:[statute myTitle]];
[self.detailView.favoritesID setText:[statute myPriority]];
[self.detailView.recordID setText:[statute myRecord]];
if ([#"1" isEqualToString:[statute myPriority]]) {
[self.detailView.favoriteControl setTitle:#"Remove from favorites"];
} else {
[self.detailView.favoriteControl setTitle:#"Add to favorites"];
}
}
Also, the part that changes the button title Add to Favorites etc, does not change on the first item selection, it simply shows "Item".
Thanks.
UPDATE:
So I narrowed it down to this piece of code:
if(self.detailView == nil) {
DetailViewController *viewController = [[DetailViewController alloc] initWithNibName:#"DetailViewController" bundle:nil];
self.detailView = viewController;
[viewController release];
}
If I remove the if clause then it happens on every selection. If I comment out the whole code I cant make any selections. So I imaging I have to find another way to initialize my view controller. Any ideas? Why did this work in iOS 6 then?

Answer 1

NEW ANSWER: (9/25/13)
I was bothered by the backwards hack that I had to do to get this to work, plus when I called the detailView from other screens I ran into a similar problem that was not fixed by this hack so I found another easier fix..
All I had to do was surround the commands that were used to set the values on the view in question within a asynchronous tag and viola! Everything worked..
Here is my solution:
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
Statutes *statute = (Statutes *)[self.statutes objectAtIndex:indexPath.row];
if(self.detailView == nil) {
DetailViewController *viewController = [[DetailViewController alloc] initWithNibName:#"DetailViewController" bundle:nil];
self.detailView = viewController;
[viewController release];
}
[self.navigationController pushViewController:self.detailView animated:YES];
dispatch_async(dispatch_get_main_queue(), ^{
self.detailView.title = [statute myStatute];
[self.detailView.statuteFullText setText:[statute myDescription]];
[self.detailView.statuteTitle setText:[statute myTitle]];
[self.detailView.favoritesID setText:[statute myPriority]];
[self.detailView.recordID setText:[statute myRecord]];
if ([#"1" isEqualToString:[statute myPriority]]) {
[self.detailView.favoriteControl setTitle:#"Remove from favorites"];
} else {
[self.detailView.favoriteControl setTitle:#"Add to favorites"];
}
});
}
So now as u can see the
dispatch_async(dispatch_get_main_queue(), ^{
is around the items to be set on the view. I got rid of all of the extra crap in the -ViewDidLoad section...
perfect.
OLD ANSWER: (9/24/13)
Well, I got it to work. It is a total backwards hack but I'm results driven so I don't care. It does kind of upset me that this functionality has changed and needed this hack but whatever.. I hope this helps others who I am sure may be running into this.
I left the above code alone and in the
- (void)viewDidLoad
section I added the following code:
DetailViewController *viewController = [[DetailViewController alloc] initWithNibName:#"DetailViewController" bundle:nil];
self.detailView = viewController;
[viewController release];
[self.navigationController pushViewController:self.detailView animated:YES];
dispatch_async(dispatch_get_main_queue(), ^{
[self.navigationController popToRootViewControllerAnimated:NO];
});
What this does is instantiates the DetailViewController, displays it, then pops it. When the app loads it appears to be at the main screen, as expected, and when making a selection it now works on the first time because technically it is NOT the fist time...
-LK