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text item won't clear the screen
Started by artistsueh Nov 05 2018 07:15 AM

2 replies to this topic
text clear screen basic newbie
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#1

artistsueh

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artistsueh
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I'm having trouble figuring out how to clear a screen... I'm trying to use Corona for a mainstream app, not for a game.

 

So I'm combining the business app template with the multi line text tutorial here (https://coronalabs.com/blog/2014/02/11/tutorial-methods-for-positioning-text/) , but I can't seem to get the screen to clear the multi line text, when I view the other screens in the app. 

Here's my code for the screen that has multiline text. it's one of only 4 screens in the app so far, and the only creating a problem - 

local composer = require( "composer" )
local scene = composer.newScene()

local widget = require( "widget" )
local widgetExtras = require("widget-extras")
local myApp = require( "myapp" )

widget.setTheme(myApp.theme)

local titleText
local locationtxt
local views = {}


local function ignoreTouch( event )
	return true
end

--
--

function scene:create( event )
	local sceneGroup = self.view

	local background = display.newRect(0,0,display.contentWidth, display.contentHeight)
	background:setFillColor( 1.95, 1.95, 1.95 )
    background.x = display.contentCenterX
    background.y = display.contentCenterY
	sceneGroup:insert(background)
	background:addEventListener("touch", ignoreTouch)

    local navBar = widget.newNavigationBar({
        title = "Event info",
        backgroundColor = { 0.96, 0.62, 0.14 },
        titleColor = {1, 1, 1},
        font = myApp.fontBold
    })
    sceneGroup:insert(navBar)



    local myText = [[LA at Griffith Park, 
Los Angeles. 
 
la.org

@laorg]]
 
local options = {
   text = myText,
   x = display.contentCenterX,
   y = display.contentCenterY,
   width = 200,
   height = 300,
   fontSize = 24,
   align = "left"
}
 
local textField = display.newText( options )
textField:setFillColor( 0, 0, 0 )

--[[
    local button6 = widget.newButton( {
        width = 160,
        height = 40,
        label = "December",
        labelColor = { 
            default = { 0.90, 0.60, 0.34 }, 
            over = { 0.79, 0.48, 0.30 } 
        },
        labelYOffset = -9, 
        font = myApp.font,
        fontSize = 18,
        emboss = false,
        onRelease = myApp.showScreen2
    } )
    sceneGroup:insert(button5)
    button5.x = display.contentCenterX
    button5.y = display.contentCenterY + 110

]]--

end
--
--

function scene:show( event )
	local sceneGroup = self.view

end

function scene:hide( event )
	local sceneGroup = self.view

	--
	-- Clean up native objects
	--

end

function scene:destroy( event )
	local sceneGroup = self.view
end


scene:addEventListener( "create", scene )
scene:addEventListener( "show", scene )
scene:addEventListener( "hide", scene )
scene:addEventListener( "destroy", scene )


return scene

I've looked at a few posts and the documentation, and  I can't seem to get this figured out. I've tried to either understand or attempt the fixes in these URLs:

 

 

https://docs.coronalabs.com/guide/programming/05/#hiding-the-scene

 

https://stackoverflow.com/questions/14713926/changing-scenes-in-corona-objects-stay-on-screen

 

----

 

I made these attempts to clear the text from the screen, they don't seem to work -


-- Completely remove the scene, including its scene object
-- composer.removeScene( "sceneGroup" )  

-- 
-- 
-- sceneGroup:remove( myText )  --DOESNT WORK, creates ERROR | WARNING: winterevents.lua:134: objectGroup:remove(): index of 0 out of range (should be 1 to 2)

-- newText:removeSelf()    
-- newText = nil


--
--
-- composer.removeScene( "sceneGroup" )   

Your help is definitely appreciated.



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#2

Rob Miracle

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Rob Miracle
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It doesn't appear that you're adding your text object(s) to the Composer scene's view group. Do a 

 

sceneGroup:insert( textField )

 

Rob



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#3

artistsueh

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artistsueh
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Awesome! thank you. That WORKS




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Also tagged with one or more of these keywords: text, clear screen, basic, newbie