Objective-c – UITableView / UITableViewCell challenge with transparent background on iPad with iOS7

ios7ipadobjective cuitableview

Last night I decided to upgrade to Xcode 5 and take a look at my current project. After updating my storyboards to the new UI everything looked great and ran fine. Since I have a universal binary, I decided to test things on iPad as well and noticed that a new white background had been introduced into my UITableview where there once used to be a transparent / clear color. This appears to be happening on the cell level, not the table level. When I run things on the 6.1 simulator everything looks fine on iPad & iPhone. And everything looks fine on iPhone for iOS7.

Everything that I have set up for interface builder is identical for iPhone & iPad. From what I can tell it has something to do with this new "content view" (which is a subgroup of the Item Cell) not honoring a transparent value / setting.

Any thoughts / ideas?

Best Answer

After wasting multiple hours with interface builder, I'm thinking that there might be a bug there. So I started to look for a programatic answer. Apparently had I started here I could have saved a ton of time. By adding to the method:

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

I was able to solve the transparency issue on iPad by adding this one line:

cell.backgroundColor = [UIColor clearColor];  // Adding this fixes the issue for iPad

Hope this helps everyone else with the white background seen for ipad with tables and iOS7!

Related Solutions

Ios – UITableViewCell show white background and cannot be modified on iOS7

As Apple DOC said (UITableViewCell Class Reference):

... In iOS 7, cells have a white background by default; in earlier versions of iOS, cells inherit the background color of the enclosing table view. If you want to change the background color of a cell, do so in the tableView:willDisplayCell:forRowAtIndexPath: method of your table view delegate.

So for my case that to show cells with transparent background, just need to implement the delegate method in the table view controller like below:

- (void)tableView:(UITableView *)tableView
  willDisplayCell:(UITableViewCell *)cell
forRowAtIndexPath:(NSIndexPath *)indexPath
{
  [cell setBackgroundColor:[UIColor clearColor]];
}

Just Note: As @null said, "...there seems to be a bug in interface builder...", I'm not totally sure whether it does have the bug, but seems so cause his comment got several up votes. So there might something wrong if you use IB. :)

Ios – Why is there extra padding at the top of the UITableView with style UITableViewStyleGrouped in iOS7

I was helped by the following:

YouStoryboard.storyboard > YouViewController > Attributes inspector > Uncheck - Adjust scroll view insets.

Best Answer

Related Solutions

Ios – UITableViewCell show white background and cannot be modified on iOS7

Ios – Why is there extra padding at the top of the UITableView with style UITableViewStyleGrouped in iOS7

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