Constraint-based custom cells somehow don't work.

[sxross]

Either that, or I'm not getting how they're supposed to work. Here's a small extracted project that illustrates the problem. There should be 3 labels per cell, stacked vertically inside a small padding view. Nothing specified in the layout blocks seems to have a rectangle with non-zero size.

https://github.com/sxross/constraint_based_table_cell

[colinta]

I think I was able to get this working:

(on iOS7, so there's that silly status bar)

Here's how I did it:

diff --git a/app/app_delegate.rb b/app/app_delegate.rb
index 36ec472..11d77f6 100644
--- a/app/app_delegate.rb
+++ b/app/app_delegate.rb
@@ -36,9 +36,15 @@ class TableViewController < UITableViewController
         cell.attendees_label = subview(UILabel, :cell_attendees_label, :text => "attendees #{indexPath.row}")
       end
     end
-    cell.contentView.apply_constraints
+
     cell
   end
+
+  def tableView(tableView, willDisplayCell:cell, forRowAtIndexPath:indexPath)
+    cell.restyle!
+    cell.apply_constraints
+  end
+
 end

 class CustomCell < UITableViewCell

Unfortunately, this requires a change to the delegate, not something I can inject automatically. But you win some you lose some. My thinking is that this could be integrated easily:

class TableViewController < UITableViewController
  module Teacup::TableViewDelegate
  # ...
end

Would define tableView(tableView, willDisplayCell:cell, forRowAtIndexPath:indexPath). If you need to define that method yourself, you can call super there.

class TableViewController < UITableViewController
  module Teacup::TableViewDelegate

  def tableView(tableView, willDisplayCell:cell, forRowAtIndexPath:indexPath)
    super
    # stuff
  end

  # ...
end

This is working in this branch: https://github.com/rubymotion/teacup/tree/tablecell

[sxross]

Thanks for tracking this down. I've been up to my eyes in a Rails project for one of my best clients and MotionModel is really getting a lot of uptake and hence feature requests, issues, etc. which take time. Maybe I can get back to my iOS app one day :)

Steve

On Jun 28, 2013, at 8:40 AM, "Colin T.A. Gray" notifications@github.com wrote:

I think I was able to get this working:

(on iOS7, so there's that silly status bar)

Here's how I did it:

diff --git a/app/app_delegate.rb b/app/app_delegate.rb
index 36ec472..11d77f6 100644
--- a/app/app_delegate.rb
+++ b/app/app_delegate.rb
@@ -36,9 +36,15 @@ class TableViewController < UITableViewController
cell.attendees_label = subview(UILabel, :cell_attendees_label, :text => "attendees #{indexPath.row}")
end
end

• cell.contentView.apply_constraints

cell
end
+

• def tableView(tableView, willDisplayCell:cell, forRowAtIndexPath:indexPath)
• cell.restyle!
• cell.apply_constraints
• end

end

class CustomCell < UITableViewCell
Unfortunately, this requires a change to the delegate, not something I can inject automatically. But you win some you lose some. My thinking is that this could be integrated easily:

class TableViewController < UITableViewController
module Teacup::TableViewDelegate

...

end
Would define tableView(tableView, willDisplayCell:cell, forRowAtIndexPath:indexPath). If you need to define that method yourself, you can call super there.

class TableViewController < UITableViewController
module Teacup::TableViewDelegate

def tableView(tableView, willDisplayCell:cell, forRowAtIndexPath:indexPath)
super
# stuff
end

...

end
This is working in this branch: https://github.com/rubymotion/teacup/tree/tableview

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