Do the Loco-MotionLayout - droidcon London 2019

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@mikescamell Deep Dive Do the Loco-MotionLayout droidcon London 2019 @mikescamell HERE!!!

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@mikescamell by Nikita Duhovny

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– Nicolas Roard (AKA Ruiner of Talks) (AKA THE DEVIL) “A mix between the property animation framework, layout transitions with TransitionManager, and CoordinatorLayout” MotionLayout

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@mikescamell Scene 1 - Part 1

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@mikescamell Scene 1 - Part 1

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@mikescamell Scene 1 - Part 1

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@mikescamell dependencies { implementation ‘com.android.support.constraint:constraint-layout:2.0.0-beta2’ } Scene 1 - Part 2

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@mikescamell dependencies { implementation ‘com.android.support.constraint:constraint-layout:2.0.0-beta3’ } Scene 1 - Part 2

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@mikescamell Scene 1 - Part 2

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@mikescamell Scene 1 - Part 2

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@mikescamell 2019-03-20 19:45:26.529 28239-28239/? E/MotionLayout: WARNING NO app:layoutDescription tag 2019-03-20 19:45:26.683 28239-28239/? E/AndroidRuntime: FATAL EXCEPTION: main Process: com.mikescamell.locomotionlayout, PID: 28239 java.lang.NullPointerException: Attempt to invoke virtual method 'int androidx.constraintlayout.motion.widget.MotionScene.getDuration()' on a null object reference Scene 1 - Part 2

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@mikescamell Scene 1 - Part 2

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@mikescamell Scene 1 - Part 2

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@mikescamell Scene 1 - Part 2

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@mikescamell Scene 1 - Part 2 scene_1.xml

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@mikescamell Scene 1 - Part 2 scene_1.xml transition

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@mikescamell Scene 1 - Part 2 scene_1.xml transition

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@mikescamell Scene 1 - Part 2 scene_1.xml transition

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@mikescamell Scene 1 - Part 2

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@mikescamell Scene 1 - Part 2 scene_1.xml transition

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@mikescamell ... Scene 1 - Part 2 scene_1.xml transition

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@mikescamell ... Scene 1 - Part 2 scene_1.xml transition constraint_set_start

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@mikescamell Scene 1 - Part 2 ... … scene_1.xml transition constraint_set_start

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@mikescamell Scene 1 - Part 2 ... scene_1.xml transition constraint_set_start

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@mikescamell Scene 1 - Part 2 ... scene_1.xml transition constraint_set_start

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@mikescamell Scene 1 - Part 2 ... scene_1.xml transition constraint_set_start

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@mikescamell Scene 1 - Part 2 ... scene_1.xml transition constraint_set_start

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@mikescamell ... Scene 1 - Part 2 scene_1.xml transition constraint_set_start constraint_set_end

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@mikescamell Scene 1 - Part 2

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@mikescamell Scene 1 - Part 3

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@mikescamell Scene 1 - Part 3

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@mikescamell Scene 1 - Part 3

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@mikescamell ... ... ... Scene 1 - Part 3 scene_1.xml transition constraint_set_start constraint_set_end

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@mikescamell ... ... ... Scene 1 - Part 3 scene_1.xml transition constraint_set_start constraint_set_end

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@mikescamell ... ... ... Scene 1 - Part 3 scene_1.xml transition constraint_set_start constraint_set_end

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@mikescamell ... ... Scene 1 - Part 3 scene_1.xml transition constraint_set_start constraint_set_end

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@mikescamell Scene 1 - Part 3 ... ... scene_1.xml transition constraint_set_start constraint_set_end

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@mikescamell Scene 1 - Part 3 ... ... scene_1.xml transition constraint_set_start constraint_set_end

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@mikescamell ... ... Scene 1 - Part 3 scene_1.xml transition constraint_set_start constraint_set_end

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@mikescamell ... ... Scene 1 - Part 3 scene_1.xml transition constraint_set_start constraint_set_end

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@mikescamell ... ... Scene 1 - Part 3 scene_1.xml transition constraint_set_start constraint_set_end

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@mikescamell Scene 1 - Part 3

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@mikescamell Scene 1 - Part 3

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@mikescamell Scene 1 - Part 4

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@mikescamell Scene 1 - Part 4

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@mikescamell Scene 1 - Part 5

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@mikescamell Scene 1 - Part 6

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@mikescamell Scene 1 - Part 6 • KeyAttribute • KeyPosition • KeyCycle • KeyTimeCycle • KeyTrigger KeyFrames

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@mikescamell ... Scene 1 - Part 6 scene_1.xml transition constraint_set_start constraint_set_end

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@mikescamell Scene 1 - Part 6 0% 100% 70% Synopsis

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@mikescamell Scene 1 - Part 6

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@mikescamell Scene 1 - Part 7 Liquidy background Liquidy background

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@mikescamell Scene 1 - Part 7

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@mikescamell Scene 2 - Part 1

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@mikescamell Scene 2 - Part 1

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@mikescamell Scene 2 - Part 1

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@mikescamell ... ... Scene 2 - Part 1 scene_2.xml constraint_set_start

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@mikescamell ... Scene 2 - Part 1 scene_2.xml constraint_set_start constraint_set_end

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@mikescamell ... Scene 2 - Part 1 scene_2.xml constraint_set_start constraint_set_end transition

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@mikescamell Scene 2 - Part 1 ... scene_2.xml constraint_set_start constraint_set_end transition

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@mikescamell Scene 2 - Part 1

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@mikescamell Scene 2 - Part 1 ... scene_2.xml constraint_set_start constraint_set_end transition

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@mikescamell Scene 2 - Part 1 ... scene_2.xml constraint_set_start constraint_set_end transition

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@mikescamell Scene 2 - Part 1 ... scene_2.xml constraint_set_start constraint_set_end transition

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@mikescamell Scene 2 - Part 1

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@mikescamell ... Scene 2 - Part 1 scene_2.xml constraint_set_start constraint_set_end transition

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@mikescamell ... Scene 2 - Part 1 scene_2.xml constraint_set_start constraint_set_end transition

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@mikescamell • Integer • Boolean • Float • String • Dimension • Pixel Dimension • Color • Color Drawable CustomAttribute Scene 2 - Part 1

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@mikescamell ... ... Scene 2 - Part 1 scene_2.xml constraint_set_start constraint_set_end transition

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@mikescamell ... ... Scene 2 - Part 1 scene_2.xml constraint_set_start constraint_set_end transition

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@mikescamell scene_2.xml constraint_set_start constraint_set_end transition ... Scene 2 - Part 1

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@mikescamell ... Scene 2 - Part 1 scene_2.xml constraint_set_start constraint_set_end transition

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@mikescamell ... Scene 2 - Part 1 scene_2.xml constraint_set_start constraint_set_end transition

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@mikescamell Scene 2 - Part 1

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@mikescamell Scene 2 - Part 2

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@mikescamell ... ... Scene 2 - Part 2 scene_2.xml constraint_set_start constraint_set_end transition

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@mikescamell ... ... Scene 2 - Part 2 scene_2.xml constraint_set_start constraint_set_end transition

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@mikescamell ... ... Scene 2 - Part 2 scene_2.xml constraint_set_start constraint_set_end transition

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@mikescamell ... ... Scene 2 - Part 2 scene_2.xml constraint_set_start constraint_set_end transition

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@mikescamell Scene 2 - Part 2 ... ... scene_2.xml constraint_set_start constraint_set_end transition

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@mikescamell Scene 2 - Part 2 ... ... scene_2.xml constraint_set_start constraint_set_end transition

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@mikescamell Scene 2 - Part 2 ... ... scene_2.xml constraint_set_start constraint_set_end transition

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@mikescamell Scene 2 - Part 2

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@mikescamell Scene 2 - Part 3

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@mikescamell KEYATTRIBUTES Scene 2 - Part 3

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@mikescamell ... Scene 2 - Part 3 scene_2.xml constraint_set_start constraint_set_end transition

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@mikescamell ... Scene 2 - Part 3 scene_2.xml constraint_set_start constraint_set_end transition

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@mikescamell ... ... ... Scene 2 - Part 3 scene_2.xml constraint_set_start constraint_set_end transition

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@mikescamell ... ... Scene 2 - Part 3 scene_2.xml constraint_set_start constraint_set_end transition

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@mikescamell Scene 2 - Part 3

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@mikescamell Scene 2 - Part 4

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@mikescamell Scene 2 - Part 4

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@mikescamell Scene 2 - Part 4

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@mikescamell ... ... Scene 2 - Part 4 scene_2.xml constraint_set_start constraint_set_end transition

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@mikescamell ... ... Scene 2 - Part 4 scene_2.xml constraint_set_start constraint_set_end transition

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@mikescamell Scene 2 - Part 4

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@mikescamell motionLayout.setTransitionListener(object : MotionLayout.TransitionListener { override fun onTransitionTrigger( motionLayout: MotionLayout, startId: Int, endId: Boolean, progress: Float ) { } override fun onTransitionStarted( motionLayout: MotionLayout, startId: Int, endId: Int ) { } override fun onTransitionChange( motionLayout: MotionLayout, startId: Int, endId: Int, progress: Float ) { } override fun onTransitionCompleted(motionLayout: MotionLayout, currentId: Int) { } }) Scene 2 - Part 4

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@mikescamell motionLayout.setTransitionListener(object : TransitionAdapter { override fun onTransitionChange( motionLayout: MotionLayout, startId: Int, endId: Int, progress: Float ) { val color = ColorUtils.setAlphaComponent(Color.WHITE, calculateProgressAlpha(progress)) bottomRightAnimationForward ?.setColorFilter(color, PorterDuff.Mode.SRC_ATOP) bottomRightAnimationReverse ?.setColorFilter(color, PorterDuff.Mode.SRC_ATOP) } }) Scene 2 - Part 4

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@mikescamell Scene 2 - Part 4

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@mikescamell Scene 2 - Part 5

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@mikescamell ... Scene 2 - Part 5 scene_2.xml constraint_set_start constraint_set_end transition

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@mikescamell ... Scene 2 - Part 5 scene_2.xml constraint_set_start constraint_set_end transition

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@mikescamell ... Scene 2 - Part 5 scene_2.xml constraint_set_start constraint_set_end transition

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@mikescamell ... Scene 2 - Part 5 scene_2.xml constraint_set_start constraint_set_end transition

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@mikescamell Scene 2 - Part 5

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@mikescamell Scene 2 - Part 5

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@mikescamell Scene 2 - Part 6

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@mikescamell Scene 2 - Part 6

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@mikescamell Scene 2 - Part 6

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@mikescamell Scene 2 - Part 6

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@mikescamell Scene 2 - Part 6

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@mikescamell Scene 2 - Part 6

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@mikescamell Scene 2 - Part 6

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@mikescamell Scene 2 - Part 6 Start Position End Position X Y 1.0 1.0 Delta Relative

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@mikescamell Scene 2 - Part 6 X Y 1.0 1.0 End Position Start Position Parent Relative

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@mikescamell Scene 2 - Part 6 X Y 1.0 1.0 End Position Start Position Path Relative

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@mikescamell Scene 2 - Part 6 Start Position End Position X Y 1.0 1.0 Delta Relative

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@mikescamell Scene 2 - Part 6 Start Position End Position X Y 1.0 1.0 2.0 Delta Relative

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@mikescamell Scene 2 - Part 6

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@mikescamell Scene 2 - Part 6

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@mikescamell Scene 2 - Part 6

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@mikescamell Scene 2 - Part 6

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@mikescamell ... ... Scene 2 - Part 6 scene_2.xml constraint_set_start constraint_set_end transition

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@mikescamell Scene 2 - Part 6

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@mikescamell Scene 2 - Part 7

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@mikescamell Scene 2 - Part 7 ... ... scene_2.xml constraint_set_start constraint_set_end transition

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@mikescamell Scene 2 - Part 7 ... ... scene_2.xml constraint_set_start constraint_set_end transition

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@mikescamell ... ... Scene 2 - Part 7 scene_2.xml constraint_set_start constraint_set_end transition

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@mikescamell Scene 2 - Part 7

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@mikescamell ... Combined Scene - Part 1,2,3 combined_scene.xml transition_startToMiddle transition_middleToEnd constraint_set_middle constraint_set_end constraint_set_start

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@mikescamell ... Combined Scene - Part 1,2,3 combined_scene.xml transition_startToMiddle transition_middleToEnd constraint_set_middle constraint_set_end constraint_set_start

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@mikescamell ... Combined Scene - Part 1,2,3 combined_scene.xml transition_startToMiddle transition_middleToEnd constraint_set_middle constraint_set_end constraint_set_start

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@mikescamell

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@mikescamell Considerations • No GUI • RecyclerView/Lists • It’s in beta • Performance? • Elevation shadow tweaking is only 28+

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@mikescamell

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@mikescamell LIVE DEMO ALERT!!!

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@mikescamell

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@mikescamell

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@mikescamell

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@mikescamell Considerations • No GUI • RecyclerView/Lists • It’s in beta • Performance? • Elevation shadow tweaking is only 28+

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@mikescamell

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@mikescamell Considerations • No GUI • Doesn’t work with RecyclerViews (coming soon) • It’s in alpha! • Performance? • Elevation shadow tweaking is only 28+

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@mikescamell Summary • Start out simple • Use an empty project • Read the blog posts & ask questions! #motionlayout • Take advantage of Apply Changes • HAVE FUN!

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@mikescamell THANK YOU! Slides: https:/ /speakerdeck.com/mikescamell/do-the-locomotionlayout-360AnDev-2019 Want to read the latest blog posts from Android Developers around the world? Checkout: androiddev.io (please it’s costing me $5 a month) Twitter: @mikescamell Website: mikescamell.com Podcast (on hiatus): androidsnacks.com (Skip to the “funny” bits at the end)

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@mikescamell Links • Slides - https:/ /speakerdeck.com/mikescamell/do-the-loco-motionlayout-360AnDev • Loco-MotionLayout Repo - https:/ /github.com/mikescamell/Loco-MotionLayout • MotionLayout Blog Posts - https:/ /mikescamell.com/tag/motionlayout/ • Nicolas Roard’s MotionLayout Series: - https:/ /medium.com/google-developers/introduction-to-motionlayout-part-i-29208674b10d - https:/ /medium.com/google-developers/introduction-to-motionlayout-part-ii-a31acc084f59 - https:/ /medium.com/google-developers/introduction-to-motionlayout-part-iii-47cd64d51a5 - https:/ /medium.com/google-developers/deﬁning-motion-paths-in-motionlayout-6095b874d37

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@mikescamell Links • Google Constraint/MotionLayout Example Repo - https:/ /github.com/googlesamples/android-ConstraintLayoutExamples • Other Talks - What's New in ConstraintLayout (Google I/O’19) ‣ https:/ /www.youtube.com/watch?v=29gLA90m6Gk - Exploring MotionLayout by Jossi Wolf ‣ https:/ /vimeo.com/333776837 • MotionLayout Sunday ™ (where the idea for this talk originated): - https:/ /twitter.com/MikeScamell/status/1071810532888457217 - https:/ /twitter.com/MikeScamell/status/1074342193102495746 - https:/ /twitter.com/MikeScamell/status/1076790689659322368 - https:/ /twitter.com/MikeScamell/status/1079508256857436160 - https:/ /twitter.com/MikeScamell/status/1082037771362029574

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@mikescamell Links • ShapeShifter (Creating AnimatedVectorDrawables) - https:/ /shapeshifter.design/ • PorterDuff.Mode - https:/ /developer.android.com/reference/android/graphics/PorterDuff.Mode