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

Methods

Modifier and Type	Method and Description
android.graphics.Rect	getHeaderBounds(android.support.v7.widget.RecyclerView recyclerView, android.view.View header, android.view.View firstView, boolean firstHeader)
boolean	hasNewHeader(int position) 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.

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)

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

Returns:

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

See Also:

StickyRecyclerHeadersAdapter#getHeaderId(int)}

getHeaderBounds

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