Accelerometer lag when resuming from suspension mode

Solar2D iOS
#21

More discoveries today.

  1. Sometimes when the accelerometer lags, the buttons stop also to respond.

  2. On an old iPhone 4 the warning (  <Warning>: CoreAnimation: updates deferred for too long ) comes up when you run the application for the first time.  This leads to accelerometer lag + buttons not responding. So this problem is not only when you suspend and resume.

 On this old iPhone 4 “<Warning>: CoreAnimation: updates deferred for too long” comes up and messes up the accelerometer and buttons on resume after suspend also.

The effects on iPhone 4 seem to be much worse compared to iPhone 5. The accelerometer and buttons lag for longer time and it happens more frequently.

I honestly don’t know how it can possibly defer something when the app just started…

What did the engineers say? What is causing the CoreAnimation error?

#22

Hi Ivan,

I haven’t received a response yet, but I’ll let you know when I hear back. Out of curiosity, can you please provide us with your system details?

  1. Which build # of Corona SDK are you using?

  2. Which version of OS X?

Thanks,

Brent

#23

Hi!

Corona Version 2014.2189 (2014.3.6)

OS X 10.9.3 (13D65)

#24

Hi Ivan,

The engineers will need a bug case/report filed for this, as by our standard. Can you create a simple test project which shows this issue and submit it as a bug?

Thanks,

Brent

#25

Hi!

Never done it before. What exactly do you mean by test project. Corona project?

#26

Nevermind, found instructions on the website. Will do!

#27

So I tried to do a test project, but my game is too complex to isolate the problem. 

However, after all this struggle I found a solution!

It turned out that if you disable accelerometer on suspend and then WAIT 1/3 of a second after resuming before turning the accelerometer on the warning doesnt show!

I guess CoreAnimation can catch up during that time. This worked on all iOS devices I have.

During this 1/3 of a second I just write “Get ready!” on the screen masking this bug as a feature. 

So everything is fine now!

#28

Great to hear Ivan! Hope your game goes well.

#29

Thank you!