question

Hi Meyumeapps, Thank you for writing to us. Without looking at the code its difficult to find the root cause of the issue. Is that possible to isolate the issue in a sample app and provide the source code of it through ContactUs ( https://developer.amazon.com/help/contactus.html)

Is the Amazon SDK for Kindle 7 HD much different to the Android variant? I've got the simplest of test apps built using the MOAI game engine ( http://getmoai.com) The app performs flawlessly on my Android devices but has 50% frame rate slow down when returning to the app on the Kindle Fire using the back button. All I'm doing is starting an activity to open the silk web browser and show the Google Home page. Any tool that might help me isolate the problem? I'm using a GLSurfaceView Renderer and the ononDrawFrame is called at a solid 60 FPS. After back button pressed this rapidly drops to 30FPS. I've timed the render and update code in my app and it takes no more than 2ms, even after the slow down. It's almost as if something else is dragging the frame rate down, like a spinning thread or something. I'm happy to post an APK if it help? Thanks Scott

Some more information: The slow down also occurs if I DON'T launch the activity from my app but instead press the quick menu and then go through app search. Returning to my app from search is an immediate 50% slow down. It is almost as if the quick start menu continues to consume resource after it has been closed?

Sorry for the posts: If I go to another app and then back to my app via the carousel then I keep the 60 FPS.

Okay, we think we have found the problem :) It seems that we need in the manifest android:hardwareAccelerated="true" despite the kindle fire 7" 2nd gen being api level 15: https://developer.amazon.com/sdk/fire/specifications.html Android docs say it's hardware acceleration is auto enabled for >= api level 14: http://developer.android.com/guide/topics/graphics/hardware-accel.html It would be good to hear something from the Amazon techies on this one as it has been driving us nuts. Message was edited by: meyumeapps

Hi Meyumeapps, Thank you for the details and findings. Can you please zip and send us the project folder of your simplest app so that we can further investigate? Please raise a ContactUs and mention this thread url ( https://forums.developer.amazon.com/forums/thread.jspa?threadID=2192&tstart=0) there. This way we could reach to the issue early.