Summary: Inherited Constants | Ctors | Methods | Inherited Methods

WearableRecyclerView.ChildLayoutManager

public static abstract class WearableRecyclerView.ChildLayoutManager
extends LinearLayoutManager

java.lang.Object
↳	android.support.v7.widget.RecyclerView.LayoutManager
	↳	android.support.v7.widget.LinearLayoutManager
		↳	android.support.wearable.view.WearableRecyclerView.ChildLayoutManager

Known direct subclasses

CurvedChildLayoutManager

CurvedChildLayoutManager This class is deprecated. use the androidx.wear.widget.WearableRecyclerView and associated classes provided by the Jetpack Wear library instead.

This class is deprecated.
use the androidx.wear.widget.WearableRecyclerView provided by the Jetpack Wear library instead.

Abstract class extending a LinearLayoutManager for defining the logic for updating layouts of children in a WearableRecyclerView. Use this class if you wish to modify the appearance of a child based on their position in the WearableRecyclerView by overriding the abstract method updateChild(View, WearableRecyclerView). This method will be called on every layout pass of for the associated WearableRecyclerView. To associated this RecyclerView.LayoutManager with a WearableRecyclerView use the RecyclerView.setLayoutManager(LayoutManager) methods.

See also:

Summary

Inherited constants

From class android.support.v7.widget.LinearLayoutManager

`int`	`HORIZONTAL`
`int`	`INVALID_OFFSET`
`int`	`VERTICAL`

Public constructors
`ChildLayoutManager(Context context)` Creates a `WearableRecyclerView.ChildLayoutManager` for a vertical list.

Public methods
`void`	`onLayoutChildren(RecyclerView.Recycler recycler, RecyclerView.State state)`
`int`	`scrollVerticallyBy(int dy, RecyclerView.Recycler recycler, RecyclerView.State state)`
`abstract void`	`updateChild(View child, WearableRecyclerView parent)` Override this method to implement custom child layout behavior on scroll.

Inherited methods

From class


        
          android.support.v7.widget.LinearLayoutManager

`void`	`assertNotInLayoutOrScroll(String arg0)`
`void`	`calculateExtraLayoutSpace(RecyclerView.State arg0, int[] arg1)`
`boolean`	`canScrollHorizontally()`
`boolean`	`canScrollVertically()`
`void`	`collectAdjacentPrefetchPositions(int arg0, int arg1, RecyclerView.State arg2, RecyclerView.LayoutManager.LayoutPrefetchRegistry arg3)`
`void`	`collectInitialPrefetchPositions(int arg0, RecyclerView.LayoutManager.LayoutPrefetchRegistry arg1)`
`int`	`computeHorizontalScrollExtent(RecyclerView.State arg0)`
`int`	`computeHorizontalScrollOffset(RecyclerView.State arg0)`
`int`	`computeHorizontalScrollRange(RecyclerView.State arg0)`
`PointF`	`computeScrollVectorForPosition(int arg0)`
`int`	`computeVerticalScrollExtent(RecyclerView.State arg0)`
`int`	`computeVerticalScrollOffset(RecyclerView.State arg0)`
`int`	`computeVerticalScrollRange(RecyclerView.State arg0)`
`int`	`findFirstCompletelyVisibleItemPosition()`
`int`	`findFirstVisibleItemPosition()`
`int`	`findLastCompletelyVisibleItemPosition()`
`int`	`findLastVisibleItemPosition()`
`View`	`findViewByPosition(int arg0)`
`RecyclerView.LayoutParams`	`generateDefaultLayoutParams()`
`int`	`getExtraLayoutSpace(RecyclerView.State arg0)`
`int`	`getInitialPrefetchItemCount()`
`int`	`getOrientation()`
`boolean`	`getRecycleChildrenOnDetach()`
`boolean`	`getReverseLayout()`
`boolean`	`getStackFromEnd()`
`boolean`	`isAutoMeasureEnabled()`
`boolean`	`isLayoutRTL()`
`boolean`	`isSmoothScrollbarEnabled()`
`void`	`onDetachedFromWindow(RecyclerView arg0, RecyclerView.Recycler arg1)`
`View`	`onFocusSearchFailed(View arg0, int arg1, RecyclerView.Recycler arg2, RecyclerView.State arg3)`
`void`	`onInitializeAccessibilityEvent(AccessibilityEvent arg0)`
`void`	`onLayoutChildren(RecyclerView.Recycler arg0, RecyclerView.State arg1)`
`void`	`onLayoutCompleted(RecyclerView.State arg0)`
`void`	`onRestoreInstanceState(Parcelable arg0)`
`Parcelable`	`onSaveInstanceState()`
`void`	`prepareForDrop(View arg0, View arg1, int arg2, int arg3)`
`int`	`scrollHorizontallyBy(int arg0, RecyclerView.Recycler arg1, RecyclerView.State arg2)`
`void`	`scrollToPosition(int arg0)`
`void`	`scrollToPositionWithOffset(int arg0, int arg1)`
`int`	`scrollVerticallyBy(int arg0, RecyclerView.Recycler arg1, RecyclerView.State arg2)`
`void`	`setInitialPrefetchItemCount(int arg0)`
`void`	`setOrientation(int arg0)`
`void`	`setRecycleChildrenOnDetach(boolean arg0)`
`void`	`setReverseLayout(boolean arg0)`
`void`	`setSmoothScrollbarEnabled(boolean arg0)`
`void`	`setStackFromEnd(boolean arg0)`
`void`	`smoothScrollToPosition(RecyclerView arg0, RecyclerView.State arg1, int arg2)`
`boolean`	`supportsPredictiveItemAnimations()`

From class


        
          android.support.v7.widget.RecyclerView.LayoutManager

`void`	`addDisappearingView(View arg0, int arg1)`
`void`	`addDisappearingView(View arg0)`
`void`	`addView(View arg0, int arg1)`
`void`	`addView(View arg0)`
`void`	`assertInLayoutOrScroll(String arg0)`
`void`	`assertNotInLayoutOrScroll(String arg0)`
`void`	`attachView(View arg0)`
`void`	`attachView(View arg0, int arg1)`
`void`	`attachView(View arg0, int arg1, RecyclerView.LayoutParams arg2)`
`void`	`calculateItemDecorationsForChild(View arg0, Rect arg1)`
`boolean`	`canScrollHorizontally()`
`boolean`	`canScrollVertically()`
`boolean`	`checkLayoutParams(RecyclerView.LayoutParams arg0)`
`static int`	`chooseSize(int arg0, int arg1, int arg2)`
`void`	`collectAdjacentPrefetchPositions(int arg0, int arg1, RecyclerView.State arg2, RecyclerView.LayoutManager.LayoutPrefetchRegistry arg3)`
`void`	`collectInitialPrefetchPositions(int arg0, RecyclerView.LayoutManager.LayoutPrefetchRegistry arg1)`
`int`	`computeHorizontalScrollExtent(RecyclerView.State arg0)`
`int`	`computeHorizontalScrollOffset(RecyclerView.State arg0)`
`int`	`computeHorizontalScrollRange(RecyclerView.State arg0)`
`int`	`computeVerticalScrollExtent(RecyclerView.State arg0)`
`int`	`computeVerticalScrollOffset(RecyclerView.State arg0)`
`int`	`computeVerticalScrollRange(RecyclerView.State arg0)`
`void`	`detachAndScrapAttachedViews(RecyclerView.Recycler arg0)`
`void`	`detachAndScrapView(View arg0, RecyclerView.Recycler arg1)`
`void`	`detachAndScrapViewAt(int arg0, RecyclerView.Recycler arg1)`
`void`	`detachView(View arg0)`
`void`	`detachViewAt(int arg0)`
`void`	`endAnimation(View arg0)`
`View`	`findContainingItemView(View arg0)`
`View`	`findViewByPosition(int arg0)`
`abstract RecyclerView.LayoutParams`	`generateDefaultLayoutParams()`
`RecyclerView.LayoutParams`	`generateLayoutParams(Context arg0, AttributeSet arg1)`
`RecyclerView.LayoutParams`	`generateLayoutParams(ViewGroup.LayoutParams arg0)`
`int`	`getBaseline()`
`int`	`getBottomDecorationHeight(View arg0)`
`View`	`getChildAt(int arg0)`
`int`	`getChildCount()`
`static int`	`getChildMeasureSpec(int arg0, int arg1, int arg2, int arg3, boolean arg4)`
`static int`	`getChildMeasureSpec(int arg0, int arg1, int arg2, boolean arg3)`
`boolean`	`getClipToPadding()`
`int`	`getColumnCountForAccessibility(RecyclerView.Recycler arg0, RecyclerView.State arg1)`
`int`	`getDecoratedBottom(View arg0)`
`void`	`getDecoratedBoundsWithMargins(View arg0, Rect arg1)`
`int`	`getDecoratedLeft(View arg0)`
`int`	`getDecoratedMeasuredHeight(View arg0)`
`int`	`getDecoratedMeasuredWidth(View arg0)`
`int`	`getDecoratedRight(View arg0)`
`int`	`getDecoratedTop(View arg0)`
`View`	`getFocusedChild()`
`int`	`getHeight()`
`int`	`getHeightMode()`
`int`	`getItemCount()`
`int`	`getItemViewType(View arg0)`
`int`	`getLayoutDirection()`
`int`	`getLeftDecorationWidth(View arg0)`
`int`	`getMinimumHeight()`
`int`	`getMinimumWidth()`
`int`	`getPaddingBottom()`
`int`	`getPaddingEnd()`
`int`	`getPaddingLeft()`
`int`	`getPaddingRight()`
`int`	`getPaddingStart()`
`int`	`getPaddingTop()`
`int`	`getPosition(View arg0)`
`static RecyclerView.LayoutManager.Properties`	`getProperties(Context arg0, AttributeSet arg1, int arg2, int arg3)`
`int`	`getRightDecorationWidth(View arg0)`
`int`	`getRowCountForAccessibility(RecyclerView.Recycler arg0, RecyclerView.State arg1)`
`int`	`getSelectionModeForAccessibility(RecyclerView.Recycler arg0, RecyclerView.State arg1)`
`int`	`getTopDecorationHeight(View arg0)`
`void`	`getTransformedBoundingBox(View arg0, boolean arg1, Rect arg2)`
`int`	`getWidth()`
`int`	`getWidthMode()`
`boolean`	`hasFocus()`
`void`	`ignoreView(View arg0)`
`boolean`	`isAttachedToWindow()`
`boolean`	`isAutoMeasureEnabled()`
`boolean`	`isFocused()`
`final boolean`	`isItemPrefetchEnabled()`
`boolean`	`isLayoutHierarchical(RecyclerView.Recycler arg0, RecyclerView.State arg1)`
`boolean`	`isMeasurementCacheEnabled()`
`boolean`	`isSmoothScrolling()`
`boolean`	`isViewPartiallyVisible(View arg0, boolean arg1, boolean arg2)`
`void`	`layoutDecorated(View arg0, int arg1, int arg2, int arg3, int arg4)`
`void`	`layoutDecoratedWithMargins(View arg0, int arg1, int arg2, int arg3, int arg4)`
`void`	`measureChild(View arg0, int arg1, int arg2)`
`void`	`measureChildWithMargins(View arg0, int arg1, int arg2)`
`void`	`moveView(int arg0, int arg1)`
`void`	`offsetChildrenHorizontal(int arg0)`
`void`	`offsetChildrenVertical(int arg0)`
`void`	`onAdapterChanged(Adapter arg0, Adapter arg1)`
`boolean`	`onAddFocusables(RecyclerView arg0, ArrayList<View> arg1, int arg2, int arg3)`
`void`	`onAttachedToWindow(RecyclerView arg0)`
`void`	`onDetachedFromWindow(RecyclerView arg0, RecyclerView.Recycler arg1)`
`void`	`onDetachedFromWindow(RecyclerView arg0)`
`View`	`onFocusSearchFailed(View arg0, int arg1, RecyclerView.Recycler arg2, RecyclerView.State arg3)`
`void`	`onInitializeAccessibilityEvent(AccessibilityEvent arg0)`
`void`	`onInitializeAccessibilityEvent(RecyclerView.Recycler arg0, RecyclerView.State arg1, AccessibilityEvent arg2)`
`void`	`onInitializeAccessibilityNodeInfo(RecyclerView.Recycler arg0, RecyclerView.State arg1, AccessibilityNodeInfoCompat arg2)`
`void`	`onInitializeAccessibilityNodeInfoForItem(RecyclerView.Recycler arg0, RecyclerView.State arg1, View arg2, AccessibilityNodeInfoCompat arg3)`
`View`	`onInterceptFocusSearch(View arg0, int arg1)`
`void`	`onItemsAdded(RecyclerView arg0, int arg1, int arg2)`
`void`	`onItemsChanged(RecyclerView arg0)`
`void`	`onItemsMoved(RecyclerView arg0, int arg1, int arg2, int arg3)`
`void`	`onItemsRemoved(RecyclerView arg0, int arg1, int arg2)`
`void`	`onItemsUpdated(RecyclerView arg0, int arg1, int arg2)`
`void`	`onItemsUpdated(RecyclerView arg0, int arg1, int arg2, Object arg3)`
`void`	`onLayoutChildren(RecyclerView.Recycler arg0, RecyclerView.State arg1)`
`void`	`onLayoutCompleted(RecyclerView.State arg0)`
`void`	`onMeasure(RecyclerView.Recycler arg0, RecyclerView.State arg1, int arg2, int arg3)`
`boolean`	`onRequestChildFocus(RecyclerView arg0, View arg1, View arg2)`
`boolean`	`onRequestChildFocus(RecyclerView arg0, RecyclerView.State arg1, View arg2, View arg3)`
`void`	`onRestoreInstanceState(Parcelable arg0)`
`Parcelable`	`onSaveInstanceState()`
`void`	`onScrollStateChanged(int arg0)`
`boolean`	`performAccessibilityAction(RecyclerView.Recycler arg0, RecyclerView.State arg1, int arg2, Bundle arg3)`
`boolean`	`performAccessibilityActionForItem(RecyclerView.Recycler arg0, RecyclerView.State arg1, View arg2, int arg3, Bundle arg4)`
`void`	`postOnAnimation(Runnable arg0)`
`void`	`removeAllViews()`
`void`	`removeAndRecycleAllViews(RecyclerView.Recycler arg0)`
`void`	`removeAndRecycleView(View arg0, RecyclerView.Recycler arg1)`
`void`	`removeAndRecycleViewAt(int arg0, RecyclerView.Recycler arg1)`
`boolean`	`removeCallbacks(Runnable arg0)`
`void`	`removeDetachedView(View arg0)`
`void`	`removeView(View arg0)`
`void`	`removeViewAt(int arg0)`
`boolean`	`requestChildRectangleOnScreen(RecyclerView arg0, View arg1, Rect arg2, boolean arg3, boolean arg4)`
`boolean`	`requestChildRectangleOnScreen(RecyclerView arg0, View arg1, Rect arg2, boolean arg3)`
`void`	`requestLayout()`
`void`	`requestSimpleAnimationsInNextLayout()`
`int`	`scrollHorizontallyBy(int arg0, RecyclerView.Recycler arg1, RecyclerView.State arg2)`
`void`	`scrollToPosition(int arg0)`
`int`	`scrollVerticallyBy(int arg0, RecyclerView.Recycler arg1, RecyclerView.State arg2)`
`void`	`setAutoMeasureEnabled(boolean arg0)`
`final void`	`setItemPrefetchEnabled(boolean arg0)`
`void`	`setMeasuredDimension(int arg0, int arg1)`
`void`	`setMeasuredDimension(Rect arg0, int arg1, int arg2)`
`void`	`setMeasurementCacheEnabled(boolean arg0)`
`void`	`smoothScrollToPosition(RecyclerView arg0, RecyclerView.State arg1, int arg2)`
`void`	`startSmoothScroll(RecyclerView.SmoothScroller arg0)`
`void`	`stopIgnoringView(View arg0)`
`boolean`	`supportsPredictiveItemAnimations()`

From class


        
          java.lang.Object

`Object`	`clone()`
`boolean`	`equals(Object arg0)`
`void`	`finalize()`
`final Class<?>`	`getClass()`
`int`	`hashCode()`
`final void`	`notify()`
`final void`	`notifyAll()`
`String`	`toString()`
`final void`	`wait(long arg0, int arg1)`
`final void`	`wait(long arg0)`
`final void`	`wait()`

From interface


        
          android.support.v7.widget.helper.ItemTouchHelper.ViewDropHandler

abstract void prepareForDrop(View arg0, View arg1, int arg2, int arg3)

From interface


        
          android.support.v7.widget.RecyclerView.SmoothScroller.ScrollVectorProvider

abstract PointF computeScrollVectorForPosition(int arg0)

Public constructors

ChildLayoutManager

public ChildLayoutManager (Context context)

Creates a WearableRecyclerView.ChildLayoutManager for a vertical list.

Parameters
`context`	`Context`: Current context, will be used to access resources.

Public methods

public void onLayoutChildren (RecyclerView.Recycler recycler, 
                RecyclerView.State state)

Parameters
`recycler`	`RecyclerView.Recycler`
`state`	`RecyclerView.State`

public int scrollVerticallyBy (int dy, 
                RecyclerView.Recycler recycler, 
                RecyclerView.State state)

Parameters
`dy`	`int`
`recycler`	`RecyclerView.Recycler`
`state`	`RecyclerView.State`

Returns
`int`

updateChild

public abstract void updateChild (View child, 
                WearableRecyclerView parent)

Override this method to implement custom child layout behavior on scroll. It is called at the end of each layout pass of the view and enables you to modify any property of the child view. Examples include scaling the children based on their distance from the center of the parent, or changing the translation of the children to create an ilusion of the path they are moving along.

Parameters
`child`	`View`: the current child to be affected.
`parent`	`WearableRecyclerView`: the `WearableRecyclerView` parent that this helper is attached to.