MotionLayout & RecyclerView

on YouTube ↗23m

" summary

Shows a concrete implementation: convert ConstraintLayout to MotionLayout, define start=list and end=detail constraint sets, programmatically compute placeholder constraints and call setTransition then transitionToEnd so a tapped viewholder animates into a detail overlay. Handles heterogeneous viewholders, flings, and scroll offsets. Notes pitfalls like bitmap snapshots and visibility being overwritten so uses visibilityMode="ignore" and scaleX/scaleY = 0.9 and moves toward copy attributes from source view binding instead of detaching view holders.

AI-written summary · about

" chapters (8)

1. 0:00Start
2. 0:45Journey
3. 4:21Ticked All the Boxes
4. 6:22Evolving Approaches
5. 16:58Assessment
6. 17:40Next Idea...
7. 18:18LayoutManager detaching views
8. 23:08Questions?

" related talks

• 39mAdvanced & Practical MotionLayoutJason Pearson · droidcon NYC 2019
• 43mMoving to MotionLayoutHuyen Tue Dao · droidcon NYC 2019
• 40mAdvanced & Practical MotionLayoutJason Pearson · droidcon SF 2019
• 19mMotionLayout: Animation made easyLuiz Santana · droidCon Berlin 2019
• 50mDeep dive into MotionLayoutNicolas Roard, John Hoford, thagikura · DroidKaigi 2019
• 21mResponsive UI with Constraint and Motion layoutImran Mohammed · Fragments 2019
• 44mPractical Motion with Constraint LayoutSean McQuillan · Android Summit 2020
• 42mConstraint-ly motion ~*~ making your app dance with With ConstraintLayoutBritt Barak · droidCon NYC 2018