ViewPager.SimpleOnPageChangeListener
public class ViewPager.SimpleOnPageChangeListener implements ViewPager.OnPageChangeListener
Simple implementation of the OnPageChangeListener interface with stub implementations of each method. Extend this if you do not intend to override every method of OnPageChangeListener.
Summary
Public constructors |
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Public methods |
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void |
onPageScrollStateChanged(int state)Called when the scroll state changes. |
void |
onPageScrolled(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. |
Public constructors
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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int state |
The new scroll state. |
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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int position |
Position index of the first page currently being displayed. Page position+1 will be visible if positionOffset is nonzero. |
float positionOffset |
Value from [0, 1) indicating the offset from the page at position. |
int positionOffsetPixels |
Value in pixels indicating the offset from position. |
onPageSelected
public void onPageSelected(int position)
This method will be invoked when a new page becomes selected. Animation is not necessarily complete.
| Parameters | |
|---|---|
int position |
Position index of the new selected page. |