RecycledViewPool

Transcript

1. RecycledViewPool @MoyuruAizawa

2. MoyuruAizawa Moyuru Aizawa
 Software engineer of CATS Div. CyberAgent Inc.

   
 Previously at Pairs Div. Eureka Inc.

3. Recycler Scrap Heap 3FDZDMFS LayoutManager View View View Recycled ViewPool

   View View View Adapter RecyclerView

4. Recycler Scrap Heap 3FDZDMFS LayoutManager View View View Recycled ViewPool

   View View View Adapter RecyclerView

5. Recycler Scrap Heap 3FDZDMFS LayoutManager Recycled ViewPool View View View

   Adapter RecyclerView

6. Recycler Scrap Heap 3FDZDMFS LayoutManager Recycled ViewPool Adapter RecyclerView

7. 3FDZDMFE7JFX1PPM Recycled ViewPool

8. 3FDZDMFE7JFX1PPM Recycled ViewPool RecyclerView RecyclerView RecyclerView

9. 3FDZDMFE7JFX1PPM Activity

10. 3FDZDMFE7JFX1PPM Activity Fragment Fragment Fragment

11. 3FDZDMFE7JFX1PPM Activity Fragment Fragment Fragment Recycler View Recycler View Recycler

    View

12. 3FDZDMFE7JFX1PPM Activity Fragment Fragment Fragment Recycler View Recycler View Recycler

    View Recycled ViewPool

13. “To maximize view recycling we share the same view pool

    across all EpoxyRecyclerView instances in the same Activity.” BJSCOCFQPYZ
    
    &QPYZ3FDZDMFS7JFX

14. /BWJHBUJPO

15. class RecycledViewPoolFactory { private val viewPools = SparseArray<RecycledViewPool>() private fun

    create(lifecycleOwner: LifecycleOwner): RecycledViewPool { viewPools.get(lifecycleOwner.hashCode())?.let { return it } val viewPool = RecycledViewPool() viewPools.put(lifecycleOwner.hashCode(), viewPool) lifecycleOwner.lifecycle .addObserver(LifecycleEventObserver { _, event -> if (event == Lifecycle.Event.ON_DESTROY) { viewPool.clear() viewPools.remove(lifecycleOwner.hashCode()) } }) return viewPool } } 3FDZDMFE7JFX1PPM'BDUPSZ

16. class RecycledViewPoolFactory { private val viewPools = SparseArray<RecycledViewPool>() private fun

    create(lifecycleOwner: LifecycleOwner): RecycledViewPool { viewPools.get(lifecycleOwner.hashCode())?.let { return it } val viewPool = RecycledViewPool() viewPools.put(lifecycleOwner.hashCode(), viewPool) lifecycleOwner.lifecycle .addObserver(LifecycleEventObserver { _, event -> if (event == Lifecycle.Event.ON_DESTROY) { viewPool.clear() viewPools.remove(lifecycleOwner.hashCode()) } }) return viewPool } } 3FDZDMFE7JFX1PPM'BDUPSZ

17. class RecycledViewPoolFactory { private val viewPools = SparseArray<RecycledViewPool>() private fun

    create(lifecycleOwner: LifecycleOwner): RecycledViewPool { viewPools.get(lifecycleOwner.hashCode())?.let { return it } val viewPool = RecycledViewPool() viewPools.put(lifecycleOwner.hashCode(), viewPool) lifecycleOwner.lifecycle .addObserver(LifecycleEventObserver { _, event -> if (event == Lifecycle.Event.ON_DESTROY) { viewPool.clear() viewPools.remove(lifecycleOwner.hashCode()) } }) return viewPool } } 3FDZDMFE7JFX1PPM'BDUPSZ

18. class RecycledViewPoolFactory { private val viewPools = SparseArray<RecycledViewPool>() private fun

    create(lifecycleOwner: LifecycleOwner): RecycledViewPool { viewPools.get(lifecycleOwner.hashCode())?.let { return it } val viewPool = RecycledViewPool() viewPools.put(lifecycleOwner.hashCode(), viewPool) lifecycleOwner.lifecycle .addObserver(LifecycleEventObserver { _, event -> if (event == Lifecycle.Event.ON_DESTROY) { viewPool.clear() viewPools.remove(lifecycleOwner.hashCode()) } }) return viewPool } } 3FDZDMFE7JFX1PPM'BDUPSZ

19. class RecycledViewPoolFactory { private val viewPools = SparseArray<RecycledViewPool>() private fun

    create(lifecycleOwner: LifecycleOwner): RecycledViewPool { viewPools.get(lifecycleOwner.hashCode())?.let { return it } val viewPool = RecycledViewPool() viewPools.put(lifecycleOwner.hashCode(), viewPool) lifecycleOwner.lifecycle .addObserver(LifecycleEventObserver { _, event -> if (event == Lifecycle.Event.ON_DESTROY) { viewPool.clear() viewPools.remove(lifecycleOwner.hashCode()) } }) return viewPool } } 3FDZDMFE7JFX1PPM'BDUPSZ

20. class RecycledViewPoolFactory { private val viewPools = SparseArray<RecycledViewPool>() private fun

    create(lifecycleOwner: LifecycleOwner): RecycledViewPool { viewPools.get(lifecycleOwner.hashCode())?.let { return it } val viewPool = RecycledViewPool() viewPools.put(lifecycleOwner.hashCode(), viewPool) lifecycleOwner.lifecycle .addObserver(LifecycleEventObserver { _, event -> if (event == Lifecycle.Event.ON_DESTROY) { viewPool.clear() viewPools.remove(lifecycleOwner.hashCode()) } }) return viewPool } } 3FDZDMFE7JFX1PPM'BDUPSZ

21. class RecycledViewPoolFactory { private val viewPools = SparseArray<RecycledViewPool>() private fun

    create(lifecycleOwner: LifecycleOwner): RecycledViewPool { viewPools.get(lifecycleOwner.hashCode())?.let { return it } val viewPool = RecycledViewPool() viewPools.put(lifecycleOwner.hashCode(), viewPool) lifecycleOwner.lifecycle .addObserver(LifecycleEventObserver { _, event -> if (event == Lifecycle.Event.ON_DESTROY) { viewPool.clear() viewPools.remove(lifecycleOwner.hashCode()) } }) return viewPool } } 3FDZDMFE7JFX1PPM'BDUPSZ

22. Thank you