1003783 - [Sora]When launch app then press home key quickly, app can't receive visibility change event because event listener not yet registered.

Status: RESOLVED WONTFIX

(Firefox OS Graveyard :: Gaia::System, defect, P2)

Description

[sync-1]

DEFECT DESCRIPTION:
 This defect causes the issue that app can't release resource correctly when switched to background. For example, camera app can't close hardware, standby power consumption increases 100ma compare to normal situation.
 
  REPRODUCING PROCEDURES:
  Launch camera app (not switch from background), and click home key quickly to hide it.Camera is running in background, power consumption is 100ma even after turning off screen by press power key .
 
 "
  EXPECTED BEHAVIOUR:
 
  ASSOCIATE SPECIFICATION:
 
  TEST PLAN REFERENCE:
 
  TOOLS AND PLATFORMS USED:
 
  USER IMPACT:
 
  REPRODUCING RATE:
 
  For FT PR, Please list reference mobile's behavior:

Comment 1

[Vance Chen [:vchen][skype:vance.lucida][[e-mail]]]

ni John 

Hi John, could you help to take a look at this one? According to partner, with the RST the camera cannot be turned off correctly hence it will cause power consumption problem. I know it is unlikely that any users will do "Launch camera app (not switch from background), and click home key quickly to hide it", but still hope you can spend some time to check this one and provide some feedbacks to partners.

Thanks for your help

Comment 2

[John Hu [:johnhu][:johu][:醬糊小弟]]

This may be related to window manager in System app. I had checked the code of Camera app[1] and System app in master. They works correctly in my Inari device with master.

May we know the version you use?

[1] https://github.com/mozilla-b2g/gaia/blob/646647896868c33042eb9d498b9533ee4659eda0/apps/camera/js/lib/camera.js#L598
[2] https://github.com/mozilla-b2g/gaia/blob/646647896868c33042eb9d498b9533ee4659eda0/apps/system/js/app_window.js#L214

CC: Wilson and Alive for Camera and System.

Comment 3

[Jack Liu]

Dear John,

The mozilla build ID is 20140422024003.

Thanks.

Comment 4

[Simba Yao]

Dear John,

Please fix in Firefox OS v1.3.

Thanks.

Comment 5

[Vance Chen [:vchen][skype:vance.lucida][[e-mail]]]

(In reply to Simba Yao from comment #4)
> Dear John,
> 
> Please fix in Firefox OS v1.3.
> 
> Thanks.

Hi Simba -

We probably won't fix this one unless it is a cert blocker for TCL device

Comment 6

[(inactive after 6/18) Alive Kuo [:alive]]

I don't think v1.5 window management has this issue still,
for v1.3 there is a weird state control for the app transition.
It's hard to tell what will happen for v1.3 if we do some transition quickly.

Comment 7

[Wesly Huang (EPM)]

link all Fire C (codename: Sora) bugs to a meta one.

Comment 8

[BMO Automation]

Firefox OS is not being worked on