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Improving Android Applications Performance Par...

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October 08, 2015
Programming
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Improving Android Applications Performance Part 1 by Ostap Stets

Improving Android Applications Performance Part 1 by Ostap Stets

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GDG Ternopil

October 08, 2015
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Transcript

  1. Improving Android Applications Performance Part 1 Ostap Stets 08.10.2015

  2. Why performance matters?

  3. None
  4. None
  5. None
  6. None
  7. None

  8. Performance issues: •Rendering •Computing ( + UI Thread Block) •Memory

    •Battery

  9. Rendering! Design vs. Performance?

  10. 1000ms / 60 hz = 16.666 ms / frame

  11. None

  12. CPU GPU MEASURE RECORD LAYOUT EXECUTE RASTERIZATION F L O

    W LAYOUTS & INVALIDATIONS OVER- DRAW Rendering pipeline Common problems

  13. Overdraw

  14. None
  15. None

  16. Understanding overdraw

  17. How to fix: Remove unneeded backgrounds

  18. Overdraw with custom views

  19. None

  20. How to fix: Canvas.clipRect() for complex custom views

  21. None

  22. Complex Layout Hierarchy Let’s see example!

  23. Questions?