addItem() - Could not find symbol 'mItems'

I am new to Monkey C, and I am trying to make a menu in my app that is populated with items automatically, but when the menu button is pressed a "Symbol not found error" occurs:

Error: Symbol Not Found Error
Details: Could not find symbol 'mItems'
Stack: 
  - addItem() at /Users/rayburn/projects/toolchain5/mbsimulator/submodules/technology/monkeybrains/virtual-machine/api/WatchUi.mb:2352 0x30003ed4 
  - initialize() at C:\git\MyRepo\source\MyMenuDelegate.mc:16 0x1000084c 
  - onMenu() at C:\git\MyRepo\source\MyDelegate.mc:19 0x10000790 
  - handleEvent() at /Users/rayburn/projects/toolchain5/mbsimulator/submodules/technology/monkeybrains/virtual-machine/api/WatchUi.mb:1240 0x30003891

Here is the code:

using Toybox.WatchUi;
using Toybox.System;
using Toybox.Application;

class MyMenuDelegate extends WatchUi.Menu2InputDelegate {
    function initialize() {
        Menu2InputDelegate.initialize();
        var labelsArr = getLabels();
        var n = labelsArr.size();
        
        for (var i = 0; i < n; ++i) {
        var menuItem = new WatchUi.MenuItem(labelsArr[i], null, "" + i, null);
        var menu = Rez.Menus.MainMenu;
			menu.addItem(menuItem);
			System.println("adding " + labelsArr[i]);
		}
    }

    function onSelect(item) {
        System.println(item.getId());
        Application.getApp().setProperty("selected", item.getId().toNumber());
    }
    function getLabels() {
    	...     //Returns an array of String values with the menu items that should be added
    }
}

Line 16 is the line where addItem() is called.

Any help would be appreciated!

Top Replies

All Replies

0 kaedenb over 4 years ago

kaedenb said:
Line 16 is the line where addItem() is called.

(it is listed as line 14 here)

0 jim_m_58 over 4 years ago

Why are you doing

var menu = Rez.Menus.MainMenu;

inside your for() loop?

Don't you want the menu to be a constant and just add to it??

What is "n"? how much are you trying to add?

0 kaedenb over 4 years ago in reply to jim_m_58

Hi Jim,

Thanks for the response!

You're right - there is no reason to set the menu inside the loop - I moved it outside. However, even when it is before the loop the issue is still there.

Also, "n" is just the length of the array:

var n = labelsArr.size();

Sorry if it was a bit confusing.

0 Kurev over 4 years ago

mItems is probably referring to Menu2 internal array of menu items. Perhaps creating the menu itself has not gone correctly, I haven't tried creating menus from resources, only programmatically. Is "var menu = Rez.Menus.MainMenu;" really enough, no need to load resource or something, or load & draw layout first?

In any case, in simulator view memory, you should see structure similar to this:

0 jim_m_58 over 4 years ago in reply to kaedenb

I mean what is the value of n? How many things are you trying to add?

Add a println (System.println("i="+i)) to see where things are breaking.

+1 jim_m_58 over 4 years ago

When you do

var menu = Rez.Menus.MainMenu;

try

var menu = new Rez.Menus.MainMenu;

0 kaedenb over 4 years ago in reply to jim_m_58

jim_m_58 said:
var menu = new Rez.Menus.MainMenu;

That was it!

I replaced:

var menu = Rez.Menus.MainMenu;

with:

var menu = new Rez.Menus.MainMenu();

Thanks so much for the help!