Devoxx11: Android awesomeness

Chet Haase, Romain Guy and Philip Milne

Android 4.0: Tablet (3.0) & Phone (2.3) reunited

GridLayout: powerful & flexible lay-outing -- way too complex explanation.

Tools for profiling / debugging Android apps. "Experience matters"

• Memory
  • dumpsys: dump info of processes running on the device
    • adb shell dumpsys meminfocom.android.Launcher: dumps heap usage details
    • dumpsys gfxinfo: graphics chip
    • dumpsys window: decompose window objects used
  • DDMS: heap dump
  • jhat:
    • generate hprof
    • convert it with hprof-conv
    • in eclipse
    • check out "rootset references" for potentially memory leaks
  • MAT: Eclipse Allocation Tracker - http://eclipse.org/mat
• Performance
  • "use your eyes"
  • DDMS
  • track frames per second -> "trackFPS()" call in a PreDrawListener
• UI
  • 'crazy' stuff like high speed cams: Casio Ex-F1: replay the animation in slow motion
  • HierarchyViewer:
    • ViewTree
    • PixelPerfectTree
  • ViewServer