在App中实现动画指南的Android库 - slidingtutorial-android

public class FirstCustomPageFragment extends PageFragment {        @Override      protected int getLayoutResId() {          // layout id of fragment          return R.layout.fragment_page_first;      }        @Override      protected TransformItem[] provideTransformItems() {          // list of transformation items          return new TransformItem[]{                  new TransformItem(R.id.ivFirstImage, true, 20),                  new TransformItem(R.id.ivSecondImage, false, 6),                  new TransformItem(R.id.ivThirdImage, true, 8),                  new TransformItem(R.id.ivFourthImage, false, 10),                  new TransformItem(R.id.ivFifthImage, false, 3),                  new TransformItem(R.id.ivSixthImage, false, 9),                  new TransformItem(R.id.ivSeventhImage, false, 14),                  new TransformItem(R.id.ivEighthImage, false, 7)          };      }  }

public class CustomPresentationPagerFragment extends PresentationPagerFragment {        @Override      public int getLayoutResId() {          // layout id of fragment          return R.layout.fragment_presentation;      }        @Override      public int getViewPagerResId() {          // id of view pager          return R.id.viewPager;      }        @Override      public int getIndicatorResId() {          // id of circular indicator          return R.id.indicator;      }        @Override      public int getButtonSkipResId() {          // id of skip button          return R.id.tvSkip;      }        @Override      protected int getPagesCount() {          // total number of pages          return 3;      }        @Override      protected PageFragment getPage(int position) {          // get page for position          if (position == 0)              return new FirstCustomPageFragment();          if (position == 1)              return new SecondCustomPageFragment();          if (position == 2)              return new ThirdCustomPageFragment();          throw new IllegalArgumentException("Unknown position: " + position);      }        @ColorInt      @Override      protected int getPageColor(int position) {          // get color of page          if (position == 0)              return ContextCompat.getColor(getContext(), android.R.color.holo_orange_dark);          if (position == 1)              return ContextCompat.getColor(getContext(), android.R.color.holo_green_dark);          if (position == 2)              return ContextCompat.getColor(getContext(), android.R.color.holo_blue_dark);          return Color.TRANSPARENT;      }        @Override      protected boolean isInfiniteScrollEnabled() {          // enable/disable infinite scroll behavior          return true;      }        @Override      protected boolean onSkipButtonClicked(View skipButton) {          // your own behavior goes here          // ...          // return true to consume click event, false otherwise          return true;      }  }