这里是我的MVP实现:publicclassOfferDetailsPdfActivityextendsAppCompatActivityimplementsOnPageChangeListener,OfferDetailsPdfMvp.View{privatePdfPresenterImplpresenter;@OverrideprotectedvoidonCreate(@NullableBundlesavedInstanceState){super.onCreate(savedInstanceState);intofferId=0;if(extras!=null){offerId=