9 Replies Latest reply on Jul 25, 2011 10:17 AM by Flex harUI

    Large image viewer memory and performance issues

    bclarkmcs

      I'm investigating Flex Mobile for use in an application that can explore large architectural drawings but am having big performance and memory issues. For the prototype i'm using the TransformGestureEvent.GESTURE_ZOOM and TransformGestureEvent.GESTURE_PAN guestures as used in Tour De Mobile Flex.

       

      While moving around an image seems fine initially as soon as an image is scaled in any way the ability to pan shows down hugely to the point where the application is unusable. In my native Android version the same drawing using matrix transforms performs very well using under 40MB of memory, in the Flex Mobile version the memory usage is in excess of 160MB.

       

      Is there something i'm missing here or an I asking too much of the platform? The image to be viewed is in the region of 4000*4000 pixels.

       

      Thanks!