ViewPager2.OnPageChangeCallback
public
static
abstract
class
ViewPager2.OnPageChangeCallback
extends Object
java.lang.Object | |
↳ | androidx.viewpager2.widget.ViewPager2.OnPageChangeCallback |
Callback interface for responding to changing state of the selected page.
Summary
Public constructors | |
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ViewPager2.OnPageChangeCallback()
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Public methods | |
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void
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onPageScrollStateChanged(int state)
Called when the scroll state changes. |
void
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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
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onPageSelected(int position)
This method will be invoked when a new page becomes selected. |
Inherited methods | |
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Public constructors
ViewPager2.OnPageChangeCallback
public ViewPager2.OnPageChangeCallback ()
Public methods
onPageScrollStateChanged
public 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 | |
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state |
int |
onPageScrolled
public 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 | |
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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.
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onPageSelected
public void onPageSelected (int position)
This method will be invoked when a new page becomes selected. Animation is not necessarily complete.
Parameters | |
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position |
int : Position index of the new selected page.
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Annotations
Interfaces
Classes