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.
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
| |
TabLayout.TabLayoutOnPageChangeListener (TabLayout tabLayout)
| Parameters | |
|---|---|
tabLayout |
TabLayout
|
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. |
Developers
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.
|
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.
|