Cool ConstraintLayout
summary
Explains why ConstraintLayout reduces view hierarchy and boosts performance, including that it ships as ConstraintLayout 1.0 beta 3 and extends in 1.1 with barrier and circular constraints; shows the solver is the Cassowary solver (same idea as iOS Auto Layout), demonstrates concrete tools: constraintSet transitions (example toggles between two XML layouts with about ten lines of code), dimensionRatio for square/aspect images, guidelines/chains for packing, and using it down to API 9 — practical code examples and a small app are built and shown to work.
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chapters (5)
- 0:00Start
- 0:30COOL THINGS ABOUT CONSTRAINT LAYOUT
- 8:21CENTER CONSTRAINT
- 9:50BASELINE CONSTRAINT
- 30:54CONSTRAINT SET DEFINE SET OF CONSTRAINTS
