view1.lua

local M = {}

M.init = function(view_mngr)
    local view1 = view_mngr.addView("view1")

    -- Callback function when one of the buttons in the grid is selected
    local function onSelected(choice)
        dumpTable(choice)
    end

    --  Specific callback function for view2
    local function onView2Clicked(choice)
        view1.leave("view2", {fromView="view1"})
    end

    --------------
    function view1.onLeave()
        print("Leaving view1")
    end

    local grid = nil

    function view1.onStart(vstage, params)
        print('view1.onStart ')
		dumpTable(params)

        local appwidth = application:getDeviceWidth()
        local appheight = application:getDeviceHeight()

        if not grid then
            -- first time OnStart is called.
            grid = ButtonGrid(appwidth, appheight, 3, 1, 0.10)

            -- Create a button grid with:
            --     Width and height of the screen
            --     3 rows, 1 column
            --     cell padding of 10%

            grid.setBtnParams({font_file = 'Vera.ttf'})

            -- Add the following buttons. The optimal unified font size for all 
            -- the buttons is calculated when the button grid is rendered
            grid.addButton(1, 1, "In View1")
            grid.addButton(2, 1, "Does nothing")
            grid.addButton(3, 1, "To View2",  onView2Clicked)

            -- Set the button grid callback handler
            grid.setHandler( onSelected )
        end
        
        grid.render(vstage)
    end

end

-------------------------------------------
-- Override callbacks    
return M