Improving Android Applications Performance Part 1 by Ostap Stets

October 08, 2015

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Improving Android Applications Performance Part 1 by Ostap Stets

Improving Android Applications Performance Part 1 by Ostap Stets

GDG Ternopil

October 08, 2015

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Transcript

Improving Android Applications Performance Part 1 Ostap Stets 08.10.2015
Why performance matters?
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Performance issues: •Rendering •Computing ( + UI Thread Block) •Memory
•Battery
Rendering! Design vs. Performance?
1000ms / 60 hz = 16.666 ms / frame
None
CPU GPU MEASURE RECORD LAYOUT EXECUTE RASTERIZATION F L O
W LAYOUTS & INVALIDATIONS OVER- DRAW Rendering pipeline Common problems
Overdraw
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Understanding overdraw
How to fix: Remove unneeded backgrounds
Overdraw with custom views
None
How to fix: Canvas.clipRect() for complex custom views
None
Complex Layout Hierarchy Let’s see example!
Questions?