com.timehop.stickyheadersrecyclerview

Class HeaderPositionCalculator

java.lang.Object

com.timehop.stickyheadersrecyclerview.HeaderPositionCalculator

public class HeaderPositionCalculator
extends java.lang.Object

Calculates the position and location of header views

Constructor Summary

Constructors

Constructor and Description
HeaderPositionCalculator(StickyRecyclerHeadersAdapter adapter, HeaderProvider headerProvider, OrientationProvider orientationProvider, DimensionCalculator dimensionCalculator)

Method Summary

Modifier and Type	Method and Description
boolean	hasNewHeader(int position, boolean isReverseLayout) Determines if an item in the list should have a header that is different than the item in the list that immediately precedes it.
boolean	hasStickyHeader(android.view.View itemView, int orientation, int position) Determines if a view should have a sticky header.
void	initHeaderBounds(android.graphics.Rect bounds, android.support.v7.widget.RecyclerView recyclerView, android.view.View header, android.view.View firstView, boolean firstHeader)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

HeaderPositionCalculator

public HeaderPositionCalculator(StickyRecyclerHeadersAdapter adapter,
                                HeaderProvider headerProvider,
                                OrientationProvider orientationProvider,
                                DimensionCalculator dimensionCalculator)

Method Detail

hasStickyHeader

public boolean hasStickyHeader(android.view.View itemView,
                               int orientation,
                               int position)

Determines if a view should have a sticky header. The view has a sticky header if: 1. It is the first element in the recycler view 2. It has a valid ID associated to its position

Parameters:

itemView - given by the RecyclerView

orientation - of the Recyclerview

position - of the list item in question

Returns:

True if the view should have a sticky header

hasNewHeader

public boolean hasNewHeader(int position,
                            boolean isReverseLayout)

Determines if an item in the list should have a header that is different than the item in the list that immediately precedes it. Items with no headers will always return false.

Parameters:

position - of the list item in questions

isReverseLayout - TRUE if layout manager has flag isReverseLayout

Returns:

true if this item has a different header than the previous item in the list

initHeaderBounds

public void initHeaderBounds(android.graphics.Rect bounds,
                             android.support.v7.widget.RecyclerView recyclerView,
                             android.view.View header,
                             android.view.View firstView,
                             boolean firstHeader)