whateverYouCalledYourWebview:removeSelf()
When i put in my code :
Webview:removeself()
In my àndroid device, thé webview dont work.
It dont work only When i put webview:removeself()
Can you post the code where you’re creating your webview and where you’re removing it? Make sure to enclose it in [code] and [/code] tags please.
it’s the code of my view 2 which include a webview :
-- -- Project: main.lua -- Description: -- -- Version: 1.0 -- Managed with http://CoronaProjectManager.com -- -- Copyright 2013 . All Rights Reserved. -- ----------------------------------------------------------------------------------------- -- -- view2.lua -- ----------------------------------------------------------------------------------------- local storyboard = require( "storyboard" ) local scene = storyboard.newScene() ----------------------------------------------------------------------------------------- -- BEGINNING OF YOUR IMPLEMENTATION -- -- NOTE: Code outside of listener functions (below) will only be executed once, -- unless storyboard.removeScene() is called. -- ----------------------------------------------------------------------------------------- local webView = native.newWebView( 0, 0, 720, 1080 ) webView:request( "https://www.facebook.com/pages/Mika-Pronos/172776792874547?fref=ts" ) -- Called when the scene's view does not exist: function scene:createScene( event ) local group = self.view group:insert(webView) end -- Called immediately after scene has moved onscreen: function scene:enterScene( event ) local group = self.view -- Do nothing end -- Called when scene is about to move offscreen: function scene:exitScene( event ) local group = self.view -- INSERT code here (e.g. stop timers, remove listenets, unload sounds, etc.) end -- If scene's view is removed, scene:destroyScene() will be called just prior to: function scene:destroyScene( event ) local group = self.view -- INSERT code here (e.g. remove listeners, remove widgets, save state variables, etc.) end ----------------------------------------------------------------------------------------- -- END OF YOUR IMPLEMENTATION ----------------------------------------------------------------------------------------- -- "createScene" event is dispatched if scene's view does not exist scene:addEventListener( "createScene", scene ) -- "enterScene" event is dispatched whenever scene transition has finished scene:addEventListener( "enterScene", scene ) -- "exitScene" event is dispatched whenever before next scene's transition begins scene:addEventListener( "exitScene", scene ) -- "destroyScene" event is dispatched before view is unloaded, which can be -- automatically unloaded in low memory situations, or explicitly via a call to -- storyboard.purgeScene() or storyboard.removeScene(). scene:addEventListener( "destroyScene", scene ) ----------------------------------------------------------------------------------------- webview:removeSelf() return scene
i’m not sure of the : group:insert(webview) and of webview:removeSelf
Here’s some food for thought. First, you are creating the webView is the scene’s main chunk. That will execute only once, ever, unless you call storyboard.removeScene() on the scene. Secondly, native objects, like native.newWebView() are not able to interact with Corona display objects. That means that you cannot put a native.newWebView() into a group, i.e. group:insert(webView) does nothing.
Because Storyboard works on OpenGL based display objects, Storyboard cannot manage native.* objects. You’re best way to do this is to move these two lines:
local webView = native.newWebView( 0, 0, 720, 1080 )
webView:request( “https://www.facebook.com/pages/Mika-Pronos/172776792874547?fref=ts” )
inside the enterScene() function. You need to take the “local” off. Where those two lines of code exist now, just leave:
local webView
This will create a forward declaration for the object so you can access it in multiple functions. Then in your exitScene() function do:
if webView and webView.removeSelf() then
webView:removeSelf()
webView = nil
end
See if that helps you.
THANK YOU VERY MUCH, 1500 download in 3 days i am happy !
thank to you ROB
I change my code like you said to me.
I have the same error, the last page stay when i change of page :
-- -- Project: main.lua -- Description: -- -- Version: 1.0 -- Managed with http://CoronaProjectManager.com -- -- Copyright 2013 . All Rights Reserved. -- ----------------------------------------------------------------------------------------- -- -- view2.lua -- ----------------------------------------------------------------------------------------- local storyboard = require( "storyboard" ) local scene = storyboard.newScene() ----------------------------------------------------------------------------------------- -- BEGINNING OF YOUR IMPLEMENTATION -- -- NOTE: Code outside of listener functions (below) will only be executed once, -- unless storyboard.removeScene() is called. -- local webView -- Called when the scene's view does not exist: function scene:createScene( event ) local group = self.view end -- Called immediately after scene has moved onscreen: function scene:enterScene( event ) local group = self.view local webView = native.newWebView( 0, 0, 720, 1080 ) webView:request( "https://www.facebook.com/pages/Mika-Pronos/172776792874547?fref=ts" ) -- Do nothing end -- Called when scene is about to move offscreen: function scene:exitScene( event ) local group = self.view if webView and webView.removeSelf() then webView:removeSelf() webView = nil end -- INSERT code here (e.g. stop timers, remove listenets, unload sounds, etc.) end -- If scene's view is removed, scene:destroyScene() will be called just prior to: function scene:destroyScene( event ) local group = self.view -- INSERT code here (e.g. remove listeners, remove widgets, save state variables, etc.) end ----------------------------------------------------------------------------------------- -- END OF YOUR IMPLEMENTATION ----------------------------------------------------------------------------------------- -- "createScene" event is dispatched if scene's view does not exist scene:addEventListener( "createScene", scene ) -- "enterScene" event is dispatched whenever scene transition has finished scene:addEventListener( "enterScene", scene ) -- "exitScene" event is dispatched whenever before next scene's transition begins scene:addEventListener( "exitScene", scene ) -- "destroyScene" event is dispatched before view is unloaded, which can be -- automatically unloaded in low memory situations, or explicitly via a call to -- storyboard.purgeScene() or storyboard.removeScene(). scene:addEventListener( "destroyScene", scene ) ----------------------------------------------------------------------------------------- return scenetry changing this
if webView and webView.removeSelf() then
to:
if webView and webView.removeSelf then
(take the parens off)
ok so, i put this
if webView and webView.removeSelf then webView:removeSelf() webView = nil end
i just take the parens off.
but same problem…
thank you very much for your help is a very important project for me…
Do you still have a “local” at the front of this line?
local webView = native.newWebView( 0, 0, 720, 1080 )
if so, take it off. You declared webView to be local at the top, which you need to do so it can be seen in the other storyboard event functions.
EXCELLENT!! WORK !
but there is a little problem when i go on a page with a webview, screen display webview when i touch on a other, destroy the old et display the new, but when i come back to the old that i opened in first, no display the webview…
I’m sorry, I didn’t quite follow what the new problem is.
You didn’t understand.
The problem is that i have 6 pages (6 pages on my tab bar)
In the first i have just a imag, in all others there are webview, but when i am on the second page with a webview it work, when i go on the third, the second leve the screen, the third page display his webview. WORK VERY WELL
but, when i come back to the second page which opened before, the webview don’t work !
The webviews seems to work only once…
Okay I understand better now. Can you post your current code that drives the #2 tab and the #3 tab so I can see how they interact? Also can you post your tab code that you use to switch tabs?
Hello, Rob, if my app is a success is thank to YOU!
Okey, for begin, i show you my main.lua, in this code, there is creation of the tab bar :
-- -- Project: ALL IN PRONOS -- Description: -- -- Version: 1.0 -- Managed with http://CoronaProjectManager.com -- -- Copyright 2013 . All Rights Reserved. -- display.setStatusBar( display.DefaultStatusBar ) local widget = require ( "widget" ) local storyboard = require ( "storyboard" ) display.setDefault( "background", 255, 255, 255 ) -- Create buttons table for the tab bar local tabButtons = { { width = 72, height = 72, defaultFile = "icone1.png", overFile = "icone1-down.png", label = "Home", size = 16, onPress = function() storyboard.gotoScene( "view1" ); end, selected = true }, { width = 90, height = 100, defaultFile = "iconmikanb.png", overFile = "iconmika.png", label = "Mika", size = 16, onPress = function() storyboard.gotoScene( "view2" ); end, }, { width = 90, height = 95, defaultFile = "iconmagicnb.png", overFile = "iconmagic.png", label = "Magic", size = 16, onPress = function() storyboard.gotoScene( "view3" ); end, }, { width = 90, height = 95, defaultFile = "iconpshgnb.png", overFile = "iconpshg.png", label = "PSHG", size = 16, onPress = function() storyboard.gotoScene( "view4" ); end, }, { width = 85, height = 90, defaultFile = "icontsnb.png", overFile = "iconts.png", label = "TS", size = 16, onPress = function() storyboard.gotoScene( "view5" ); end, }, { width = 90, height = 95, defaultFile = "iconniconb.png", overFile = "iconnico.png", label = "Nico", size = 16, onPress = function() storyboard.gotoScene( "view6" ); end, }, } --Create a tab-bar and place it at the bottom of the screen local demoTabs = widget.newTabBar { top = display.contentHeight - 120, width = display.contentWidth, height = 120, backgroundFile = "assets/tabbar.png", --backgroundFileWidth = 720 --backgroundFileHeight = 117 tabSelectedLeftFile = "assets/tabBar\_tabSelectedLeft.png", tabSelectedMiddleFile = "assets/tabBar\_tabSelectedMiddle.png", tabSelectedRightFile = "assets/tabBar\_tabSelectedRight.png", tabSelectedFrameWidth = 20, tabSelectedFrameHeight = 120, buttons = tabButtons } storyboard.gotoScene( "view1" )
The #tab1 or view 1 where the storyboard go is a Home without Webview.
The webview are in the #2 #3 #4 #5 #6 TAB.
The #2 tab with your changement which work ! :
- ----------------------------------------------------------------------------------------- -- -- view2.lua -- ----------------------------------------------------------------------------------------- local storyboard = require( "storyboard" ) local scene = storyboard.newScene() local webView ----------------------------------------------------------------------------------------- -- BEGINNING OF YOUR IMPLEMENTATION -- -- NOTE: Code outside of listener functions (below) will only be executed once, -- unless storyboard.removeScene() is called. -- -- Called when the scene's view does not exist: function scene:createScene( event ) local group = self.view webView = native.newWebView( 0, 0, 720, 1080 ) webView:request( "https://www.facebook.com/pages/Mika-Pronos/172776792874547?fref=ts" ) end -- Called immediately after scene has moved onscreen: function scene:enterScene( event ) local group = self.view -- Do nothing end -- Called when scene is about to move offscreen: function scene:exitScene( event ) local group = self.view if webView and webView.removeSelf then webView:removeSelf() webView = nil end -- INSERT code here (e.g. stop timers, remove listenets, unload sounds, etc.) end -- If scene's view is removed, scene:destroyScene() will be called just prior to: function scene:destroyScene( event ) local group = self.view -- INSERT code here (e.g. remove listeners, remove widgets, save state variables, etc.) end ----------------------------------------------------------------------------------------- -- END OF YOUR IMPLEMENTATION ----------------------------------------------------------------------------------------- -- "createScene" event is dispatched if scene's view does not exist scene:addEventListener( "createScene", scene ) -- "enterScene" event is dispatched whenever scene transition has finished scene:addEventListener( "enterScene", scene ) -- "exitScene" event is dispatched whenever before next scene's transition begins scene:addEventListener( "exitScene", scene ) -- "destroyScene" event is dispatched before view is unloaded, which can be -- automatically unloaded in low memory situations, or explicitly via a call to -- storyboard.purgeScene() or storyboard.removeScene(). scene:addEventListener( "destroyScene", scene ) ----------------------------------------------------------------------------------------- return scene
and after when i go to the #3 TAB BAR :
------------------------------------ -- -- view3lua -- ----------------------------------------------------------------------------------------- local storyboard = require( "storyboard" ) local scene = storyboard.newScene() local webView ----------------------------------------------------------------------------------------- -- BEGINNING OF YOUR IMPLEMENTATION -- -- NOTE: Code outside of listener functions (below) will only be executed once, -- unless storyboard.removeScene() is called. -- -- Called when the scene's view does not exist: function scene:createScene( event ) local group = self.view webView = native.newWebView( 0, 0, 720, 1080 ) webView:request( "https://www.facebook.com/MagicPronostics?fref=ts" ) end -- Called immediately after scene has moved onscreen: function scene:enterScene( event ) local group = self.view -- Do nothing end -- Called when scene is about to move offscreen: function scene:exitScene( event ) local group = self.view if webView and webView.removeSelf then webView:removeSelf() webView = nil end -- INSERT code here (e.g. stop timers, remove listenets, unload sounds, etc.) end -- If scene's view is removed, scene:destroyScene() will be called just prior to: function scene:destroyScene( event ) local group = self.view -- INSERT code here (e.g. remove listeners, remove widgets, save state variables, etc.) end ----------------------------------------------------------------------------------------- -- END OF YOUR IMPLEMENTATION ----------------------------------------------------------------------------------------- -- "createScene" event is dispatched if scene's view does not exist scene:addEventListener( "createScene", scene ) -- "enterScene" event is dispatched whenever scene transition has finished scene:addEventListener( "enterScene", scene ) -- "exitScene" event is dispatched whenever before next scene's transition begins scene:addEventListener( "exitScene", scene ) -- "destroyScene" event is dispatched before view is unloaded, which can be -- automatically unloaded in low memory situations, or explicitly via a call to -- storyboard.purgeScene() or storyboard.removeScene(). scene:addEventListener( "destroyScene", scene ) ----------------------------------------------------------------------------------------- return scene
So the seconde work, the third too, but when i am on the third and that i want come back to the second, the webview don’t display for this time ( my webview just work once)
This needs to happen in “enterScene” not “createScene”
webView = native.newWebView( 0, 0, 720, 1080 )
webView:request( “https://www.facebook.com/pages/Mika-Pronos/172776792874547?fref=ts” )
Why? because of the conditions that cause createScene() to be executed. createScene is only executed under three conditions:
-
The scene has never existed.
-
The scene was purged using storyboard.purgeScene() or storyboard.purgeAll()
-
The scene was removed using storyboard.removeScene() or storyboard.removeAll()
Scenes can be purged either by your command (executing one of the above purge commands) or by a low memory warning event.
Scenes can only be removed by your command.
In your code, you are doing neither 2 or 3, so the createScene’s will only run once, when the scene is first loaded. Because native.* objects are not managed by storyboard, it’s kinda silly to put them into createScene since they can’t transition with the scenes. What you get is a box on the screen and then the scene transitions below it. Because of this native.* are best created in enterScene after the scene is on the screen. This solves your technical problem of not getting them to come back later.
THANK YOU VERY MUCH, 1500 download in 3 days i am happy !
thank to you ROB