Use a switch cell for airplane mode and listen to changes.

Settings/RootController.m

@@ -12,6 +12,10 @@ @interface RootController ()
 @property (nonatomic, readwrite, retain) NITableViewModel* model;
 @end
 
+typedef enum {
+  AirplaneModeSwitch,
+} FormIds;
+
 @implementation RootController
 
 @synthesize model;
@@ -21,9 +25,14 @@ - (id)initWithStyle:(UITableViewStyle)style {
   if (self) {
     self.title = @"Settings";
 
+    // K, we need to show a switch cell here.
     NSMutableArray* contents =
     [NSMutableArray arrayWithObjects:
-     [NITitleCellObject objectWithTitle:@"Airplane Mode" image:[UIImage imageNamed:@"Settings-Air"]],
+     [NISwitchFormElement switchElementWithID:AirplaneModeSwitch
+                                    labelText:@"Airplane Mode"
+                                        value:YES
+                              didChangeTarget:self
+                            didChangeSelector:@selector(didChangeAirplaneMode:)],
      nil];
     // NICellFactory here allows us to take advantage of the pre-built bindings between
     // Nimbus cells. This way we don't have to create our own factory until we absolutely need to.
@@ -42,4 +51,20 @@ - (void)loadView {
   self.tableView.dataSource = self.model;
 }
 
+- (void)tableView:(UITableView *)tableView willDisplayCell:(UITableViewCell *)cell forRowAtIndexPath:(NSIndexPath *)indexPath {
+  id object = [self.model objectAtIndexPath:indexPath];
+  if ([object isKindOfClass:[NIFormElement class]]) {
+    NIFormElement* formElement = object;
+    if (AirplaneModeSwitch == formElement.elementID) {
+      cell.imageView.image = [UIImage imageNamed:@"Settings-Air"];
+    }
+  }
+}
+
+#pragma mark - Form Elements
+
+- (void)didChangeAirplaneMode:(UISwitch *)element {
+  NSLog(@"%d", element.on);
+}
+
 @end