Show alert on error

app/auto.rb

@@ -1,6 +1,7 @@
 class Auto
-  def initialize(type)
+  def initialize(type, owner)
     @type = type
+    @owner = owner
     @account_store = ACAccountStore.alloc.init
     @account_type = @account_store.accountTypeWithAccountTypeIdentifier type
   end
@@ -50,26 +51,28 @@ def options
   end
 
   def handle_error(error_ptr)
+     NSLog "*0"
     case error_ptr.code
     when ACErrorUnknown
-      NSLog "Error Unknown"
+      @owner.show_error "Error Unknown"
     when ACErrorAccountMissingRequiredProperty
-      NSLog "Account missing required property"
+      @owner.show_error "Account missing required property"
     when ACErrorAccountAuthenticationFailed
-      NSLog "Account authentication failed"
+      @owner.show_error "Account authentication failed"
     when ACErrorAccountTypeInvalid
-      NSLog "Account type invalid"
+      @owner.show_error "Account type invalid"
     when ACErrorAccountAlreadyExists
-      NSLog "Account already exists"
+      @owner.show_error "Account already exists"
     when ACErrorAccountNotFound
       # Occurs if the user has no accounts set up of the particular type
-      NSLog "Account not found"
+      @owner.show_error "Account not found"
     when ACErrorPermissionDenied
-      NSLog "User denied permission"
+      @owner.show_error "User denied permission"
     when ACErrorAccessInfoInvalid
-      NSLog "Access info invalid"
+      # This may indicate you haven't properly configured the app on Facebook
+      @owner.show_error "Access info invalid"
     else
-      NSLog "Unknown error code"
+      @owner.show_error "Unknown error code"
     end
   end
 end

app/menu_controller.rb

@@ -10,6 +10,8 @@ def viewDidLoad
       "Auto-post to Sina Weibo"
     ]
     self.title = "Social"
+    # If I don't show an alert here, when I first try to do so later there's a crash. Can't figure out why.
+    show_error 'Welcome'
   end
 
   def tableView(tableView, numberOfRowsInSection:section)
@@ -41,14 +43,24 @@ def tableView(tableView, didSelectRowAtIndexPath:indexPath)
     end
   end
 
+  def show_error(message)
+    alert = UIAlertView.alloc.initWithTitle("Error",
+      message: message,
+      delegate: self,
+      cancelButtonTitle: "OK",
+      otherButtonTitles:nil)
+    alert.show
+  end
+
   private
 
   def compose(service)
     @composer = Composer.new self, service, "Test post from RubyMotion"
   end
 
   def auto(type)
-    @auto = Auto.new(type)
+    # pass a reference to the current view controller so we can display error alerts
+    @auto = Auto.new(type, self)
     @auto.post_status "@andyw8 Test post from iOS #{Time.now}"
   end
 end