Package icyllis.modernui.widget

Class TabLayout.TabLayoutOnPageChangeListener

java.lang.Object

icyllis.modernui.widget.TabLayout.TabLayoutOnPageChangeListener

All Implemented Interfaces:

ViewPager.OnPageChangeListener

Enclosing class:

TabLayout

public static class TabLayout.TabLayoutOnPageChangeListener
extends Object
implements ViewPager.OnPageChangeListener

A ViewPager.OnPageChangeListener class which contains the necessary calls back to the provided TabLayout so that the tab position is kept in sync.

This class stores the provided TabLayout weakly, meaning that you can use addOnPageChangeListener(OnPageChangeListener) without removing the listener and not cause a leak.

Constructor Summary

Constructors

Constructor	Description
TabLayoutOnPageChangeListener(TabLayout tabLayout)

Method Summary

Modifier and Type	Method	Description
void	onPageScrolled(int position, float positionOffset, int positionOffsetPixels)	This method will be invoked when the current page is scrolled, either as part of a programmatically initiated smooth scroll or a user initiated touch scroll.
void	onPageScrollStateChanged(int state)	Called when the scroll state changes.
void	onPageSelected(int position)	This method will be invoked when a new page becomes selected.

Methods inherited from class java.lang.Object

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

Constructor Details

TabLayoutOnPageChangeListener

public TabLayoutOnPageChangeListener(TabLayout tabLayout)

Method Details

onPageScrollStateChanged

public void onPageScrollStateChanged(int state)

Description copied from interface: ViewPager.OnPageChangeListener

Called when the scroll state changes. Useful for discovering when the user begins dragging, when the pager is automatically settling to the current page, or when it is fully stopped/idle.

Specified by:

onPageScrollStateChanged in interface ViewPager.OnPageChangeListener

Parameters:

state - The new scroll state.

See Also:

• ViewPager.SCROLL_STATE_IDLE
• ViewPager.SCROLL_STATE_DRAGGING
• ViewPager.SCROLL_STATE_SETTLING

onPageScrolled

public void onPageScrolled(int position,
 float positionOffset,
 int positionOffsetPixels)

Description copied from interface: ViewPager.OnPageChangeListener

This method will be invoked when the current page is scrolled, either as part of a programmatically initiated smooth scroll or a user initiated touch scroll.

Specified by:

onPageScrolled in interface ViewPager.OnPageChangeListener

Parameters:

position - Position index of the first page currently being displayed. Page position+1 will be visible if positionOffset is nonzero.

positionOffset - Value from [0, 1) indicating the offset from the page at position.

positionOffsetPixels - Value in pixels indicating the offset from position.

onPageSelected

public void onPageSelected(int position)

Description copied from interface: ViewPager.OnPageChangeListener

This method will be invoked when a new page becomes selected. Animation is not necessarily complete.

Specified by:

onPageSelected in interface ViewPager.OnPageChangeListener

Parameters:

position - Position index of the new selected page.