android ViewPager onPageChangeListener
2014-03-25 16:40
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ViewPager.OnPageChangeListener
public abstract 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 | The new scroll state. |
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See Also
public abstract 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
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.
public abstract void onPageSelected (int position)
This method will be invoked when a new page becomes selected. Animation is not necessarily complete.
Parameters
position | Position index of the new selected page. |
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