无限轮播

来源：互联网发布：筑业标书制作软件编辑：程序博客网时间：2024/05/29 07:20

写一个线程:

Handler handler =new Handler(){    @Override    public void handleMessage(Message msg) {        super.handleMessage(msg);        int currentItem = pager.getCurrentItem();        pager.setCurrentItem(currentItem+1);        handler.sendEmptyMessageDelayed(0,2000);    }};

加点操作:

public void jiadian() {     ll = (LinearLayout) findViewById(R.id.ll);//得到LinearLayout布局        image.clear();清空图片集合         ll.removeAllViews();//清空LinearLayout布局    for (int i=0;i<list.size();i++)//添加        {             imageView = new ImageView(MainActivity.this);//创建一个图片布局             if(i==0)             {                 imageView.setImageResource(R.drawable.dot_focuable);             }else             {                 imageView.setImageResource(R.drawable.dot_normal);             }            LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(20, 20);//圆点大小            if(i==0)            {                layoutParams.setMargins(250,0,20,0);//间距            }else            {                layoutParams.setMargins(20,0,20,0);            }            image.add(imageView);//圆点添加到图片集合中            ll.addView(imageView,layoutParams);//圆点添加到LinearLayout中        }}

监听:

pager.setOnPageChangeListener(new ViewPager.OnPageChangeListener() {    @Override    public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {    }    @Override    public void onPageSelected(int position) {        for (int i=0;i<list.size();i++)        {            if(i==position%list.size())            {                      image.get(i).setImageResource(R.drawable.dot_focuable);//修改图片颜色            }else            {                image.get(i).setImageResource(R.drawable.dot_normal);            }        }    }    @Override    public void onPageScrollStateChanged(int state) {    }});class Mypager extends PagerAdapter{    @Override    public Object instantiateItem(ViewGroup container, int position) {        ImageView imageView = new ImageView(MainActivity.this);        imageView.setScaleType(ImageView.ScaleType.FIT_XY);        ImageLoader.getInstance().displayImage(list.get(position%list.size()),imageView);         container.addView(imageView);         //图片点击监听       imageView.setOnTouchListener(new NewTouchListener());

      return imageView;    }    @Override    public void destroyItem(ViewGroup container, int position, Object object) {        container.removeView((View) object);    }    @Override    public int getCount() {        return Integer.MAX_VALUE;    }    @Override    public boolean isViewFromObject(View view, Object object) {        return view==object;    }}
当点击图片时候让图片停止
private class NewTouchListener implements View.OnTouchListener {    @Override    public boolean onTouch(View arg0, MotionEvent arg1) {        // TODO Auto-generated method stub        switch (arg1.getAction()) {            case MotionEvent.ACTION_DOWN:                handler.removeCallbacksAndMessages(null);                break;            case MotionEvent.ACTION_CANCEL:                handler.sendEmptyMessageDelayed(0, 2000);                break;            case MotionEvent.ACTION_UP:                handler.sendEmptyMessageDelayed(0, 2000);                break;            default:                break;        }        return true;    }}

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