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

BoBoMEe/AutoScrollLoopViewPager

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