Android ANR

Comments

• ar2rsawseen Maintainer

  January 2014

  @arcadia androids default behavior is that if for 5 seconds UI thread is busy when user does any input (touch or key) then ANR occurs.
  
  I my self right now developing a plugin to get images from gallery or camera and use in Gideros, and I'm working on resizing, so on my slow device LG P500, resizing of large image (2000x2000) takes more than 5 seconds, so I'm seeing the ANR dialog quite a lot. But in this dialog there is also an option to wait, I press wait and successfully wait till the image processing is done.
  
  So in reality, it could be that app is actually doing something and you should wait more, but sometimes not.
  
  KeyDispatchingTimeOut basically says that it was key input which detect that UI thread is busy for more than 5 seconds. But that does not mean that something bad happens in your app on Key event. Most probably after seeing black screen and your app loading, user tried to push back, or something like that.
  
  Now to why this happens, is another question.
  
  Firstly did user mention if it started happening after some update, or it was a new user?
  Do you know what device did the user have and what resources are available on device (CPU/RAM)?
  
  It might be graphics loading, especially if you are not dividing graphics between screens and simply load everything in the beginning of the app.
  It also might be a loop, etc.
  It could be some service waiting on the callback
  
  

  Likes: hgvyas123

  http://appcodingeasy.com/Gideros-Mobile

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• arcadia Member

  January 2014

  mmm
  In the Android Activity i also use a thread to display my splash screen to avoid the black screen while gideros load the resources. It's wrong?

  MY ANDROID APPS:
  https://play.google.com/store/apps/developer?id=Arcadia Solutions

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• ar2rsawseen Maintainer

  January 2014 edited January 2014

  no I don't think so, been doing the same.
  on which game you have it? let me try it out

  http://appcodingeasy.com/Gideros-Mobile

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• arcadia Member

  January 2014

  Save The ark
  https://play.google.com/store/apps/details?id=it.arcadiasolutions.savetheark

  MY ANDROID APPS:
  https://play.google.com/store/apps/developer?id=Arcadia Solutions

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• arcadia Member

  January 2014

  Maybe I could load some resources in the main.lua and some resource the first time i enter in the level scene (if the resource does not exist yet)

  MY ANDROID APPS:
  https://play.google.com/store/apps/developer?id=Arcadia Solutions

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• ar2rsawseen Maintainer

  January 2014 Accepted Answer

  Interesting that it actually loaded on my LG P500, took it a while, actually quite a while, but still loaded.
  
  so you load all of your resources in the main file? I would suggest dividing them to the scenes and load only global graphics in main.lua (the ones that are used in many scenes)
  
  

  http://appcodingeasy.com/Gideros-Mobile

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• arcadia Member

  January 2014

  Ok thx I will do. I could ask you to try again when i will publish The next release?

  MY ANDROID APPS:
  https://play.google.com/store/apps/developer?id=Arcadia Solutions

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• ar2rsawseen Maintainer

  January 2014

  Sure
  And you could also check if those ANRs you have also coming from low end devices, just in case

  http://appcodingeasy.com/Gideros-Mobile

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• atilim Maintainer

  January 2014

  Also as a side note, all asset loading and Lua running are done on a different thread. Therefore even if you're loading very big assets or doing a long calculation in Lua, it shouldn't result in ANR.

  http://en.wikipedia.org/wiki/Cytorus

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• arcadia Member

  January 2014 edited January 2014

  oh...mmm...

  MY ANDROID APPS:
  https://play.google.com/store/apps/developer?id=Arcadia Solutions

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