加点，无限轮播

来源：互联网发布：程序员搬砖是什么意思编辑：程序博客网时间：2024/06/02 12:50
List<ImageView> IVlist=new ArrayList<ImageView>();

/** * 加点 */private void initDot() {    for (int i = 0; i < image.length; i++) {        ImageView lv=new ImageView(getActivity());        if(i==0)        {            lv.setImageResource(R.drawable.item_red);        }else        {            lv.setImageResource(R.drawable.item_green);        }        //给线性布局设置狂傲        LinearLayout.LayoutParams params=new LinearLayout.LayoutParams(20,20);        params.setMargins(35,0,35,0);        tv_linear.addView(lv,params);        IVlist.add(lv);    }}

vp2.addOnPageChangeListener(new ViewPager.OnPageChangeListener() {    @Override    public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {    }    @Override    public void onPageSelected(int position) {                  for (int i = 0; i < IVlist.size(); i++) {                if (i==position%image.length)                {                    IVlist.get(i).setImageResource(R.drawable.item_red);                }else                {                    IVlist.get(i).setImageResource(R.drawable.item_green);                }        }    }    @Override    public void onPageScrollStateChanged(int state) {    }});
 


//图片跳转时间handler = new Handler() {    @Override    public void handleMessage(Message msg) {        super.handleMessage(msg);        if(msg.what==0)        {            int currentItem = vp2.getCurrentItem();            currentItem++;            vp2.setCurrentItem(currentItem);            handler.sendEmptyMessageDelayed(0, 2000);        }    }};handler.sendEmptyMessageDelayed(0, 2000);vp2.setAdapter(new OtherAdapter());/** * Viewpager适配器 */class  OtherAdapter extends PagerAdapter{    private View view;    @Override    public int getCount() {        return Integer.MAX_VALUE;    }    @Override    public boolean isViewFromObject(View view, Object object) {        return view==object;    }    @Override    public Object instantiateItem(ViewGroup container, int position) {        view = View.inflate(getActivity(), R.layout.item_vp2, null);        ImageView image_vp2 = view.findViewById(R.id.image_vp2);        image_vp2.setImageResource(image[position%image.length]);        container.addView(view);        return view;    }    @Override    public void destroyItem(ViewGroup container, int position, Object object) {        container.removeView((View) object);    }}
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