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added in version 22.2.0
belongs to Maven artifact com.android.support:design:27.1.0

TabLayout.TabLayoutOnPageChangeListener

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

java.lang.Object
   ↳ android.support.design.widget.TabLayout.TabLayoutOnPageChangeListener


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.

Summary

Public constructors

TabLayout.TabLayoutOnPageChangeListener(TabLayout tabLayout)

Public methods

void onPageScrollStateChanged(int state)

Called when the scroll state changes.

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 onPageSelected(int position)

This method will be invoked when a new page becomes selected.

Inherited methods

From class java.lang.Object
From interface android.support.v4.view.ViewPager.OnPageChangeListener

Public constructors

TabLayout.TabLayoutOnPageChangeListener

added in version 22.2.0
TabLayout.TabLayoutOnPageChangeListener (TabLayout tabLayout)

Parameters
tabLayout TabLayout

Public methods

onPageScrollStateChanged

added in version 22.2.0
void onPageScrollStateChanged (int state)

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.

Parameters
state int: The new scroll state.

onPageScrolled

added in version 22.2.0
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.

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

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

positionOffsetPixels int: Value in pixels indicating the offset from position.

onPageSelected

added in version 22.2.0
void onPageSelected (int position)

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

Parameters
position int: Position index of the new selected page.