A handy helper for showing loading cells in iOS Apps with Rubymotion

README.md

Here's A handy helper for showing loading cells in iOS Apps with Rubymotion

To use, simply include the class in your project and then from within your controller:

# in my controller

def tableView(tableView, cellForRowAtIndexPath: indexPath)
  # return a loading cell
  LoadingCell.loadingCellWithTableView(self.tableView)
end

Here's how it looks:

Feel free to modify to suit your needs :-)

~ KatanaCode Ltd. 2012

loading_cell.rb

class LoadingCell < UITableViewCell

  CELL_FRAME = [[0,0], [320, 44]]
  LABEL_FRAME = [[120, 11], [79, 21]]
  ACTIVITY_INDICATOR_FRAME = [[92,11],[20,20]]

  LABEL_TEXT = 'Loading...'

  def self.loadingCellWithTableView(tableView)
    tableView.dequeueReusableCellWithIdentifier(self.class.to_s) || begin
      alloc.initWithFrame(CELL_FRAME)
    end
  end

  def reuseIdentifier
    self.class.to_s
  end

  def initWithFrame(frame)
    super(frame)
    addSubview(activityIndicator)
    addSubview(label)    
  end

  def label
    @label ||= begin
      _label           = UILabel.alloc.initWithFrame(LABEL_FRAME)
      _label.text      = LABEL_TEXT
      _label.textColor = UIColor.darkGrayColor
      _label.backgroundColor = UIColor.clearColor
      _label
    end
  end

  def activityIndicator
    @activityIndicator ||= begin
      _activityIndicator = UIActivityIndicatorView.alloc.initWithActivityIndicatorStyle(UIActivityIndicatorViewStyleGray)
      _activityIndicator.frame = ACTIVITY_INDICATOR_FRAME
      _activityIndicator.startAnimating
      _activityIndicator
    end
  end

end