Loving Lean Layouts

on YouTube ↗41m

" summary

Layouts that are simple and shallow cut memory and CPU: replacing a LinearLayout + ImageView + TextView with a single TextView using compound drawables drops three views to one and reduces depth. Tools shown include Hierarchy Viewer (visual tree + millisecond timings), systrace, dumpsys gfxinfo and Marshmallow frame stats. Pitfalls: RelativeLayout doubles measure passes (and multiplies when nested), nested weights and list-item replication amplify cost. Custom ViewGroups or drawing on canvas remove extra passes but cost development time.

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" chapters (12)

1. 0:00Introduction
2. 2:02Agenda
3. 2:43What is Lean
4. 3:48Performance
5. 5:30Maintainability
6. 7:31View Hierarchy
7. 8:47Performance Problems
8. 13:48Hierarchy Viewer
9. 19:20Fixing Problems
10. 23:50Simplify and Reduce
11. 32:22Custom View Groups
12. 35:43Good Practices

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