What if Setonpagechangelistener is out of date?

Today, using the ViewPager method found out setOnPageChangeListener of date, and as the compiler does not pass, and finally checked the original set replaced add , the code is as follows:

• setOnPageChangeListener

mviewpager.setonpagechangelistener ( New  Viewpager.onpagechangelistener () { @Override  public  void  onpagescrolled  (int  position, float  Positionoffset, int  positionoffsetpixels) {} @Override  public  void  onpageselected  (int  position) {} @Override  public  void   Onpagescrollstatechanged  (int  state) {}});  

• addonpagechangelistener

mviewpager.addonpagechangelistener ( New  Viewpager.onpagechangelistener () { @Override  public  void  onpagescrolled  (int  position, float  Positionoffset, int  positionoffsetpixels) {} @Override  public  void  onpageselected  (int  position) {selectedtab (position);}  @Override  public  void  onpagescrollstatechanged  (int  State) {}});
 

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What if Setonpagechangelistener is out of date?