实现图片的自动滚动

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此案例是实现页面的自滚动,且中间有小圆圈随着连动:


private void setIndicator() {
  layout=(LinearLayout) findViewById(R.id.pagerIndicator);
  for (int i = 0; i < images.length; i++) {
   View view=new View(this);
   LinearLayout.LayoutParams params=
     new LinearLayout.LayoutParams(10,10);
   
   view.setLayoutParams(params);
   view.setBackgroundResource(R.drawable.indicator_selector_01);
   layout.addView(view);
  }
  layout.getChildAt(0).setEnabled(false);
 }

 private int currentPager;
 private void setViewPager() {
  viewPager=(ViewPager) findViewById(R.id.guidePagerId);
  PagerAdapter adapter=new GuideAdapter();
  viewPager.setAdapter(adapter);
  currentPager=0;
  viewPager.setCurrentItem(currentPager);
  //让其自动滚动
  final Handler handler=new Handler();
  handler.postDelayed(new Runnable() {
   @Override
   public void run() {
    currentPager++;
    if (currentPager==10000) {
     currentPager=0;
    }
    viewPager.setCurrentItem(currentPager);
    handler.postDelayed(this, 3000);
   }
  }, 3000);
  viewPager.setOnPageChangeListener(new OnPageChangeListener() {
   @Override
   public void onPageScrollStateChanged(int arg0) {
    
   }

   @Override
   public void onPageScrolled(int arg0, float arg1, int arg2) {
   }
   private int prePos;
   @Override
   public void onPageSelected(int position) {
    layout.getChildAt(position%6).setEnabled(false);//show blue
    layout.getChildAt(prePos).setEnabled(true);//show hui
    prePos=position%6;
   }
  });
 }
 class GuideAdapter extends PagerAdapter{
  @Override
  public int getCount() {
   return 10000;
  }
  @Override
  public boolean isViewFromObject(View arg0, Object arg1) {
   return arg0==arg1;
  }
  @Override
  public Object instantiateItem(ViewGroup container, int position) {
   ImageView iv=new ImageView(MainActivity.this);
   iv.setScaleType(ScaleType.FIT_XY);
   iv.setImageResource(images[position%6]);
   container.addView(iv);
   return iv;
  }
  @Override
  public void destroyItem(ViewGroup container, int position, Object object) {
   container.removeView((View)object);
  }
 }
}

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