ScrollLoopViewPager

Android auto scroll loop viewpager

ScreenShot

Import

• maven

<dependency>
  <groupId>com.bobomee.android</groupId>
  <artifactId>scrollloopviewpager</artifactId>
  <version>2.1</version>
  <type>aar</type>
</dependency>

• gradle

compile 'com.bobomee.android:scrollloopviewpager:2.1'

Usage

• Simple

private void initViewPager(View view) {
      ViewPager viewPager = ViewFindUtils.find(view, R.id.viewpager);
      viewPager.setAdapter(new FragmentStateAdapter(getChildFragmentManager()));

      final BannerController bannerController = new BannerController(getActivity());
      bannerController.viewPager(viewPager);

      viewPager.setOnTouchListener(new View.OnTouchListener() {
        @Override public boolean onTouch(View v, MotionEvent event) {
          bannerController.dispatchTouchEvent(event);
          return false;
        }
      });

      bannerController.startAutoScroll();
}

• BannerConfig

  final BannerConfig bannerConfig = BannerConfig.sConfig(getContext())
           .autoScrollFactor(0.8f)
           .swipeScrollFactor(1.2f)
           .interval(800);

  final BannerController bannerController = new BannerController(bannerConfig);
  bannerController.viewPager(viewPager);

• BannerController

 final BannerController lBannerController = new BannerScroll(lBannerConfig);//use custom config
 lBannerController.viewPager(lViewPager); // attach viewpager

      lViewPager.setOnTouchListener(new View.OnTouchListener() {
        @Override public boolean onTouch(View v, MotionEvent event) {
          lBannerController.dispatchTouchEvent(event);// dispatchTouchEvent,stop scroll when touch
          return false;
        }
      });

• Advance

 viewPager.addOnPageChangeListener(new ViewPager.SimpleOnPageChangeListener() {
        @Override public void onPageSelected(int position) {
          super.onPageSelected(position);
          if (bannerController.isFirst() || bannerController.isLast()) {
            bannerController.toggleDirection();
          }
        }
      });

Extends

However, you can also customize Viewpager

public class InfiniteBanner extends LoopViewPager {

  private BannerScroll mBannerScroll;

  public InfiniteBanner(Context context) {
    super(context);
    init();
  }

  public InfiniteBanner(Context context, AttributeSet attrs) {
    super(context, attrs);
    init();
  }

  private void init() {
    mBannerScroll = new BannerScroll(getContext());
    mBannerScroll.viewPager(this);
    mBannerScroll.startAutoScroll();
  }

  @Override public boolean dispatchTouchEvent(MotionEvent ev) {
    mBannerScroll.dispatchTouchEvent(ev);
    return super.dispatchTouchEvent(ev);
  }

  @Override protected void onDetachedFromWindow() {
    mBannerScroll.onDetachedFromWindow();
    super.onDetachedFromWindow();
  }
}

 ViewPager viewPager = ViewFindUtils.find(view, viewpager);
 FragmentStateAdapter fragmentStateAdapter = new FragmentStateAdapter(fragmentManager);
 viewPager.setAdapter(fragmentStateAdapter);

• see more: FiniteBanner

Config Setting

• interval(long) set auto scroll time in milliseconds, default is DEFAULT_INTERVAL.
• direction(int) set auto scroll direction, default is RIGHT.
• autoScrollFactor(double) set the factor by which the duration of sliding animation will change.
• stopScrollWhenTouch(boolean) set whether stop auto scroll when touching, default is true.
• You may need JakeWharton/ViewPagerIndicator to implement indicator.
• Also you can see DrawableIndicator

Thanks

• imbryk/LoopingViewPager
• Trinea/android-auto-scroll-view-pager