StaggeredGridLayoutManager

Nested classes
`class`	`StaggeredGridLayoutManager.LayoutParams` LayoutParams used by StaggeredGridLayoutManager.

Constants
`int`	`GAP_HANDLING_LAZY` This constant was deprecated in API level 22.1.0. No longer supported.
`int`	`GAP_HANDLING_MOVE_ITEMS_BETWEEN_SPANS` When scroll state is changed to `SCROLL_STATE_IDLE`, StaggeredGrid will check if there are gaps in the because of full span items.
`int`	`GAP_HANDLING_NONE` Does not do anything to hide gaps.
`int`	`HORIZONTAL`
`int`	`VERTICAL`

Public constructors
`StaggeredGridLayoutManager(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes)` Constructor used when layout manager is set in XML by RecyclerView attribute "layoutManager".
`StaggeredGridLayoutManager(int spanCount, int orientation)` Creates a StaggeredGridLayoutManager with given parameters.

Public methods
`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.
`boolean`	`checkLayoutParams(RecyclerView.LayoutParams lp)` Determines the validity of the supplied LayoutParams object.
`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[]`	`findFirstCompletelyVisibleItemPositions(int[] into)` Returns the adapter position of the first completely visible view for each span.
`int[]`	`findFirstVisibleItemPositions(int[] into)` Returns the adapter position of the first visible view for each span.
`int[]`	`findLastCompletelyVisibleItemPositions(int[] into)` Returns the adapter position of the last completely visible view for each span.
`int[]`	`findLastVisibleItemPositions(int[] into)` Returns the adapter position of the last visible view for each span.
`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`	`getColumnCountForAccessibility(RecyclerView.Recycler recycler, RecyclerView.State state)` Returns the number of columns for accessibility.
`int`	`getGapStrategy()` Returns the current gap handling strategy for StaggeredGridLayoutManager.
`int`	`getOrientation()`
`boolean`	`getReverseLayout()` Returns whether views are laid out in reverse order or not.
`int`	`getRowCountForAccessibility(RecyclerView.Recycler recycler, RecyclerView.State state)` Returns the number of rows for accessibility.
`int`	`getSpanCount()` Returns the number of spans laid out by StaggeredGridLayoutManager.
`void`	`invalidateSpanAssignments()` For consistency, StaggeredGridLayoutManager keeps a mapping between spans and items.
`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)`.
`void`	`offsetChildrenHorizontal(int dx)` Offset all child views attached to the parent RecyclerView by dx pixels along the horizontal axis.
`void`	`offsetChildrenVertical(int dy)` Offset all child views attached to the parent RecyclerView by dy pixels along the vertical axis.
`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 direction, 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`	`onInitializeAccessibilityNodeInfoForItem(RecyclerView.Recycler recycler, RecyclerView.State state, View host, AccessibilityNodeInfoCompat info)` Called by the AccessibilityDelegate when the accessibility information for a specific item should be populated.
`void`	`onItemsAdded(RecyclerView recyclerView, int positionStart, int itemCount)` Called when items have been added to the adapter.
`void`	`onItemsChanged(RecyclerView recyclerView)` Called in response to a call to `notifyDataSetChanged()` or `swapAdapter(Adapter, boolean)` ()} and signals that the the entire data set has changed.
`void`	`onItemsMoved(RecyclerView recyclerView, int from, int to, int itemCount)` Called when an item is moved withing the adapter.
`void`	`onItemsRemoved(RecyclerView recyclerView, int positionStart, int itemCount)` Called when items have been removed from the adapter.
`void`	`onItemsUpdated(RecyclerView recyclerView, int positionStart, int itemCount, Object payload)` Called when items have been changed in the adapter and with optional payload.
`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.
`void`	`onScrollStateChanged(int state)` RecyclerView calls this method to notify LayoutManager that scroll state has changed.
`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 to the specified adapter position.
`void`	`scrollToPositionWithOffset(int position, int offset)` Scroll to the specified adapter position with the given offset from 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`	`setGapStrategy(int gapStrategy)` Sets the gap handling strategy for StaggeredGridLayoutManager.
`void`	`setMeasuredDimension(Rect childrenBounds, int wSpec, int hSpec)` Sets the measured dimensions from the given bounding box of the children and the measurement specs that were passed into `onMeasure(int, int)`.
`void`	`setOrientation(int orientation)` Sets the orientation of the layout.
`void`	`setReverseLayout(boolean reverseLayout)` Sets whether LayoutManager should start laying out items from the end of the UI.
`void`	`setSpanCount(int spanCount)` Sets the number of spans for the layout.
`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".


      assertNotInLayoutOrScroll(String message)

Checks if RecyclerView is in the middle of a layout or scroll and throws an IllegalStateException if it is.


      canScrollHorizontally()

Query if horizontal scrolling is currently supported.


      canScrollVertically()

Query if vertical scrolling is currently supported.


      checkLayoutParams(RecyclerView.LayoutParams lp)

Determines the validity of the supplied LayoutParams object.

int


      computeHorizontalScrollExtent(RecyclerView.State state)