Issue with APPLICATION_SUSPEND event

Rickyngk · January 2012

I use Music Player example, and add some lines at the bottom

stage:addEventListener(Event.APPLICATION_SUSPEND,
function()
print("line 1")
print("line 2")
print("line 3")
end
)

Only "line 1" was printed when I make an interrupt. Is it expected behavior? (only one instruction execute when suspend)

Regards,

atilim · January 2012

Hi,

They're all executed. Just the player cannot send all of the print messages through wi-fi. If you want, just write a bunch of lines to a file as described here http://www.giderosmobile.com/forum/discussion/377/writing-to-file#Item_7 and then read them back.

(I think it's better to flush all network cache before exiting. I'll look at it)

Rickyngk · January 2012

Hi,
I see that line 2 and line 3 are printed after I resume the app.
In my game, I'd like all of entities (sprite) are invisible when suspend. So I take a loop to do setVisible(false) to all, but they are just disappeared after I resume, not right-away I make interrupt.

atilim · January 2012

Because right after you suspend, iOS doesn't allow updating the screen. Therefore, you can only see the result after you resume the application.

atilim · January 2012

btw, if your sprites have a parent sprite, just make the parent sprite invisible for an easier solution.

Rickyngk · January 2012

Would you please give me a hint how to overcome this issue. My game is a kind of time counting. If entities are not disappear, player can make a cheat easily. In fact, I can not continue to count time when interrupt, It's not fair to normal player.
Thanks,

Edit: I set the parent sprite (the root sprite of all sprites), but no luck

atilim · January 2012

Afaik, there is no way. But if your application is suspended, the player cannot see the entities either. Am I missing a point?

For the visibility issue, you can refer to this code:

-- assume that you have some sprites:
local sprite1 = ....
local sprite2 = ....
local sprite3 = ....
 
-- add them to a parent sprite
local parent = Sprite.new()
parent:addChild(sprite1)
parent:addChild(sprite2)
parent:addChild(sprite3)
 
-- add the parent sprite to the stage
stage:addChild(parent)
 
-- if the parent sprite is invisible, then the child sprites are not drawn also
parent:setVisible(false)

Rickyngk · January 2012

I'm using iPad with iOS5. It's ok if I press the hard circle button. However, If I use 5 fingers to minimize app (not really minimize, just scale to smaller size and resume), multitask gesture, or slide left/right, open Notification box, the bug happens.
http://www.macstories.net/tutorials/ios-5-tips-tricks-hidden-features/

atilim · January 2012

I understand now

I can give a try, but I'm not sure if it's possible or not.

Rickyngk · January 2012

I found an app http://itunes.apple.com/en/app/id392569270?mt=8
Animation is still playing when I minimize slowly. It's nice if it's possible!
Thanks,

atilim · January 2012

Thank you. I'll look at it.

phongtt · February 2012

Hi atilim,

Do you have any good news about this issue?
I hope so

We are thinking to try a temporary workaround, that is... the game will pause if it recognizes 4 or more simultaneous touch points (!)

atilim · February 2012

Unfortunately no. First I should upgrade one of my iPads to iOS 5 :-\" but I'll

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