added in version 26.1.0
belongs to Maven artifact com.android.support:wear:28.0.0-alpha1

Summary: Nested Classes | Inherited XML Attrs | Inherited Constants | Ctors | Methods | Inherited Methods | [Expand All]

WearableLinearLayoutManager

This package is part of the Android support library which is no longer maintained. The support library has been superseded by AndroidX which is part of Jetpack. We recommend using the AndroidX libraries in all new projects. You should also consider migrating existing projects to AndroidX. To find the AndroidX class that maps to this deprecated class, see the AndroidX support library class mappings.

public class WearableLinearLayoutManager
extends LinearLayoutManager

java.lang.Object
↳	android.support.v7.widget.RecyclerView.LayoutManager
	↳	android.support.v7.widget.LinearLayoutManager
		↳	android.support.wear.widget.WearableLinearLayoutManager

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This wear-specific implementation of LinearLayoutManager provides basic offsetting logic for updating child layout. For round devices it offsets the children horizontally to make them appear to travel around a circle. For square devices it aligns them in a straight list. This functionality is provided by the CurvingLayoutCallback which is set when constructing the this class with its default constructor WearableLinearLayoutManager(Context).

Summary

Nested classes
class	WearableLinearLayoutManager.LayoutCallback Callback for interacting with layout passes.

Inherited XML attributes
From class android.support.v7.widget.LinearLayoutManager RecyclerView_android_orientation   RecyclerView_reverseLayout   RecyclerView_stackFromEnd
From class android.support.v7.widget.RecyclerView.LayoutManager RecyclerView_android_orientation   RecyclerView_reverseLayout   RecyclerView_spanCount   RecyclerView_stackFromEnd

Inherited constants
From class android.support.v7.widget.LinearLayoutManager int HORIZONTAL int INVALID_OFFSET int VERTICAL

Public constructors
WearableLinearLayoutManager(Context context, WearableLinearLayoutManager.LayoutCallback layoutCallback) Creates a WearableLinearLayoutManager for a vertical list.
WearableLinearLayoutManager(Context context) Creates a WearableLinearLayoutManager for a vertical list.

Public methods
WearableLinearLayoutManager.LayoutCallback	getLayoutCallback()
void	onLayoutChildren(RecyclerView.Recycler recycler, RecyclerView.State state) Lay out all relevant child views from the given adapter.
int	scrollVerticallyBy(int dy, RecyclerView.Recycler recycler, RecyclerView.State state) Scroll vertically by dy pixels in screen coordinates and return the distance traveled.
void	setLayoutCallback(WearableLinearLayoutManager.LayoutCallback layoutCallback) Set a particular instance of the layout callback for this WearableLinearLayoutManager.

Inherited methods
From class android.support.v7.widget.LinearLayoutManager void assertNotInLayoutOrScroll(String message) Checks if RecyclerView is in the middle of a layout or scroll and throws an IllegalStateException if it is. boolean canScrollHorizontally() Query if horizontal scrolling is currently supported. boolean canScrollVertically() Query if vertical scrolling is currently supported. void collectAdjacentPrefetchPositions(int dx, int dy, RecyclerView.State state, RecyclerView.LayoutManager.LayoutPrefetchRegistry layoutPrefetchRegistry) Gather all positions from the LayoutManager to be prefetched, given specified momentum. void collectInitialPrefetchPositions(int adapterItemCount, RecyclerView.LayoutManager.LayoutPrefetchRegistry layoutPrefetchRegistry) Gather all positions from the LayoutManager to be prefetched in preperation for its RecyclerView to come on screen, due to the movement of another, containing RecyclerView. int computeHorizontalScrollExtent(RecyclerView.State state) Override this method if you want to support scroll bars. int computeHorizontalScrollOffset(RecyclerView.State state) Override this method if you want to support scroll bars. int computeHorizontalScrollRange(RecyclerView.State state) Override this method if you want to support scroll bars. PointF computeScrollVectorForPosition(int targetPosition) Should calculate the vector that points to the direction where the target position can be found. int computeVerticalScrollExtent(RecyclerView.State state) Override this method if you want to support scroll bars. int computeVerticalScrollOffset(RecyclerView.State state) Override this method if you want to support scroll bars. int computeVerticalScrollRange(RecyclerView.State state) Override this method if you want to support scroll bars. int findFirstCompletelyVisibleItemPosition() Returns the adapter position of the first fully visible view. int findFirstVisibleItemPosition() Returns the adapter position of the first visible view. int findLastCompletelyVisibleItemPosition() Returns the adapter position of the last fully visible view. int findLastVisibleItemPosition() Returns the adapter position of the last visible view. View findViewByPosition(int position) Finds the view which represents the given adapter position. RecyclerView.LayoutParams generateDefaultLayoutParams() Create a default LayoutParams object for a child of the RecyclerView. int getExtraLayoutSpace(RecyclerView.State state) Returns the amount of extra space that should be laid out by LayoutManager. int getInitialPrefetchItemCount() Gets the number of items to prefetch in collectInitialPrefetchPositions(int, LayoutPrefetchRegistry), which defines how many inner items should be prefetched when this LayoutManager's RecyclerView is nested inside another RecyclerView. int getOrientation() Returns the current orientation of the layout. boolean getRecycleChildrenOnDetach() Returns whether LayoutManager will recycle its children when it is detached from RecyclerView. boolean getReverseLayout() Returns if views are laid out from the opposite direction of the layout. boolean getStackFromEnd() boolean isAutoMeasureEnabled() Returns whether the measuring pass of layout should use the AutoMeasure mechanism of RecyclerView or if it should be done by the LayoutManager's implementation of onMeasure(Recycler, State, int, int). boolean isLayoutRTL() boolean isSmoothScrollbarEnabled() Returns the current state of the smooth scrollbar feature. void onDetachedFromWindow(RecyclerView view, RecyclerView.Recycler recycler) Called when this LayoutManager is detached from its parent RecyclerView or when its parent RecyclerView is detached from its window. View onFocusSearchFailed(View focused, int focusDirection, RecyclerView.Recycler recycler, RecyclerView.State state) Called when searching for a focusable view in the given direction has failed for the current content of the RecyclerView. void onInitializeAccessibilityEvent(AccessibilityEvent event) void onLayoutChildren(RecyclerView.Recycler recycler, RecyclerView.State state) Lay out all relevant child views from the given adapter. void onLayoutCompleted(RecyclerView.State state) Called after a full layout calculation is finished. void onRestoreInstanceState(Parcelable state) Parcelable onSaveInstanceState() Called when the LayoutManager should save its state. int scrollHorizontallyBy(int dx, RecyclerView.Recycler recycler, RecyclerView.State state) Scroll horizontally by dx pixels in screen coordinates and return the distance traveled. void scrollToPosition(int position) Scroll the RecyclerView to make the position visible. void scrollToPositionWithOffset(int position, int offset) Scroll to the specified adapter position with the given offset from resolved layout start. int scrollVerticallyBy(int dy, RecyclerView.Recycler recycler, RecyclerView.State state) Scroll vertically by dy pixels in screen coordinates and return the distance traveled. void setInitialPrefetchItemCount(int itemCount) Sets the number of items to prefetch in collectInitialPrefetchPositions(int, LayoutPrefetchRegistry), which defines how many inner items should be prefetched when this LayoutManager's RecyclerView is nested inside another RecyclerView. void setOrientation(int orientation) Sets the orientation of the layout. void setRecycleChildrenOnDetach(boolean recycleChildrenOnDetach) Set whether LayoutManager will recycle its children when it is detached from RecyclerView. void setReverseLayout(boolean reverseLayout) Used to reverse item traversal and layout order. void setSmoothScrollbarEnabled(boolean enabled) When smooth scrollbar is enabled, the position and size of the scrollbar thumb is computed based on the number of visible pixels in the visible items. void setStackFromEnd(boolean stackFromEnd) Compatibility support for setStackFromBottom(boolean) void smoothScrollToPosition(RecyclerView recyclerView, RecyclerView.State state, int position) Smooth scroll to the specified adapter position. boolean supportsPredictiveItemAnimations() Returns whether this LayoutManager supports "predictive item animations".
From class android.support.v7.widget.RecyclerView.LayoutManager void addDisappearingView(View child, int index) To be called only during onLayoutChildren(Recycler, State) to add a view to the layout that is known to be going away, either because it has been removed or because it is actually not in the visible portion of the container but is being laid out in order to inform RecyclerView in how to animate the item out of view. void addDisappearingView(View child) To be called only during onLayoutChildren(Recycler, State) to add a view to the layout that is known to be going away, either because it has been removed or because it is actually not in the visible portion of the container but is being laid out in order to inform RecyclerView in how to animate the item out of view. void addView(View child, int index) Add a view to the currently attached RecyclerView if needed. void addView(View child) Add a view to the currently attached RecyclerView if needed. void assertInLayoutOrScroll(String message) Checks if RecyclerView is in the middle of a layout or scroll and throws an IllegalStateException if it is not. void assertNotInLayoutOrScroll(String message) Checks if RecyclerView is in the middle of a layout or scroll and throws an IllegalStateException if it is. void attachView(View child) Reattach a previously detached view. void attachView(View child, int index) Reattach a previously detached view. void attachView(View child, int index, RecyclerView.LayoutParams lp) Reattach a previously detached view. void calculateItemDecorationsForChild(View child, Rect outRect) Calculates the item decor insets applied to the given child and updates the provided Rect instance with the inset values. boolean canScrollHorizontally() Query if horizontal scrolling is currently supported. boolean canScrollVertically() Query if vertical scrolling is currently supported. boolean checkLayoutParams(RecyclerView.LayoutParams lp) Determines the validity of the supplied LayoutParams object. static int chooseSize(int spec, int desired, int min) Chooses a size from the given specs and parameters that is closest to the desired size and also complies with the spec. void collectAdjacentPrefetchPositions(int dx, int dy, RecyclerView.State state, RecyclerView.LayoutManager.LayoutPrefetchRegistry layoutPrefetchRegistry) Gather all positions from the LayoutManager to be prefetched, given specified momentum. void collectInitialPrefetchPositions(int adapterItemCount, RecyclerView.LayoutManager.LayoutPrefetchRegistry layoutPrefetchRegistry) Gather all positions from the LayoutManager to be prefetched in preperation for its RecyclerView to come on screen, due to the movement of another, containing RecyclerView. int computeHorizontalScrollExtent(RecyclerView.State state) Override this method if you want to support scroll bars. int computeHorizontalScrollOffset(RecyclerView.State state) Override this method if you want to support scroll bars. int computeHorizontalScrollRange(RecyclerView.State state) Override this method if you want to support scroll bars. int computeVerticalScrollExtent(RecyclerView.State state) Override this method if you want to support scroll bars. int computeVerticalScrollOffset(RecyclerView.State state) Override this method if you want to support scroll bars. int computeVerticalScrollRange(RecyclerView.State state) Override this method if you want to support scroll bars. void detachAndScrapAttachedViews(RecyclerView.Recycler recycler) Temporarily detach and scrap all currently attached child views. void detachAndScrapView(View child, RecyclerView.Recycler recycler) Detach a child view and add it to a Recycler's scrap heap. void detachAndScrapViewAt(int index, RecyclerView.Recycler recycler) Detach a child view and add it to a Recycler's scrap heap. void detachView(View child) Temporarily detach a child view. void detachViewAt(int index) Temporarily detach a child view. void endAnimation(View view) Ends all animations on the view created by the RecyclerView.ItemAnimator. View findContainingItemView(View view) Traverses the ancestors of the given view and returns the item view that contains it and also a direct child of the LayoutManager. View findViewByPosition(int position) Finds the view which represents the given adapter position. abstract RecyclerView.LayoutParams generateDefaultLayoutParams() Create a default LayoutParams object for a child of the RecyclerView. RecyclerView.LayoutParams generateLayoutParams(Context c, AttributeSet attrs) Create a LayoutParams object suitable for this LayoutManager from an inflated layout resource. RecyclerView.LayoutParams generateLayoutParams(ViewGroup.LayoutParams lp) Create a LayoutParams object suitable for this LayoutManager, copying relevant values from the supplied LayoutParams object if possible. int getBaseline() Returns offset of the RecyclerView's text baseline from the its top boundary. int getBottomDecorationHeight(View child) Returns the total height of item decorations applied to child's bottom. View getChildAt(int index) Return the child view at the given index int getChildCount() Return the current number of child views attached to the parent RecyclerView. static int getChildMeasureSpec(int parentSize, int parentMode, int padding, int childDimension, boolean canScroll) Calculate a MeasureSpec value for measuring a child view in one dimension. static int getChildMeasureSpec(int parentSize, int padding, int childDimension, boolean canScroll) This method was deprecated in API level 24.1.0. use getChildMeasureSpec(int, int, int, int, boolean) boolean getClipToPadding() Check if the RecyclerView is configured to clip child views to its padding. int getColumnCountForAccessibility(RecyclerView.Recycler recycler, RecyclerView.State state) Returns the number of columns for accessibility. int getDecoratedBottom(View child) Returns the bottom edge of the given child view within its parent, offset by any applied ItemDecorations. void getDecoratedBoundsWithMargins(View view, Rect outBounds) Return