com.daimajia.slider.library.Tricks

接口 ViewPagerEx.OnPageChangeListener

所有已知实现类:

PagerIndicator, ViewPagerEx.SimpleOnPageChangeListener

封闭类:

ViewPagerEx

public static interface ViewPagerEx.OnPageChangeListener

Callback interface for responding to changing state of the selected page.

方法概要

方法

限定符和类型	方法和说明
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.

方法详细资料

onPageScrolled

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.

参数:

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

void onPageSelected(int position)

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

参数:

position - Position index of the new selected page.

onPageScrollStateChanged

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.

参数:

state - The new scroll state.

另请参阅:

ViewPagerEx.SCROLL_STATE_IDLE, ViewPagerEx.SCROLL_STATE_DRAGGING, ViewPagerEx.SCROLL_STATE_SETTLING