无线轮播ViewPager封装类

package bw.com.yunifangstore.view;import android.content.Context;import android.os.Handler;import android.os.Message;import android.support.v4.view.PagerAdapter;import android.support.v4.view.ViewPager;import android.util.AttributeSet;import android.view.MotionEvent;import android.view.View;import android.view.ViewGroup;import android.widget.ImageView;import com.nostra13.universalimageloader.core.DisplayImageOptions;import com.nostra13.universalimageloader.core.ImageLoader;import java.util.ArrayList;import bw.com.yunifangstore.R;import bw.com.yunifangstore.interfaceclass.OnPageClickListener;import bw.com.yunifangstore.utils.CommonUtils;import bw.com.yunifangstore.utils.ImageLoaderUtils;/** * 无线轮播封装类类 */public class RoolViewPager extends ViewPager {    private DisplayImageOptions imageOptions;    private ArrayList<String> imageUrlList;    private ArrayList<ImageView> dotList;    private int[] pic;    private RoolViewPagerAdapter adapter;    private static final int RoolZERO = 0;    private Handler handler = new Handler() {        @Override        public void handleMessage(Message msg) {            //获取当前的ViewPager页            int currentItem = RoolViewPager.this.getCurrentItem();            currentItem++;            //设置当前            RoolViewPager.this.setCurrentItem(currentItem);            //发送消息            this.sendEmptyMessageDelayed(RoolZERO, 2000);        }    };    private OnPageClickListener onPageClickListener;    public RoolViewPager(Context context) {        super(context);        init();    }    public RoolViewPager(Context context, AttributeSet attrs) {        super(context, attrs);        init();    }    private void init() {        imageOptions = ImageLoaderUtils.initOptions();    }    /**     * 调用者也就是其他类的ViewPager传送的数据     *     * @param imageUrlList 显示图片的集合     * @param dotList  联动小点的集合(ImageView)     * @param pic      存放小点的数组     * @param onPageClickListener 自己设置的回调监听获取索引值     */    public void initData(final ArrayList<String> imageUrlList, final ArrayList<ImageView> dotList, final int[] pic, OnPageClickListener onPageClickListener) {        this.imageUrlList = imageUrlList;        this.dotList = dotList;        this.pic = pic;        this.onPageClickListener = onPageClickListener;        /**         * 小点随之滑动         * 页面滑动监听         */        this.setOnPageChangeListener(new OnPageChangeListener() {            @Override            public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {            }            @Override            public void onPageSelected(int position) {                for (int i = 0; i < dotList.size(); i++) {                    if (position % imageUrlList.size() == i) {                        dotList.get(i).setImageResource(pic[0]);                    } else {                        dotList.get(i).setImageResource(pic[1]);                    }                }            }            @Override            public void onPageScrollStateChanged(int state) {            }        });    }    /**     * 设置适配器     */    public void setRoolAdapter() {        if (adapter == null) {            adapter = new RoolViewPagerAdapter();        }        this.setAdapter(adapter);        //发送消息        handler.sendEmptyMessageDelayed(RoolZERO, 2000);    }    /**     * 内部适配器类     */    public class RoolViewPagerAdapter extends PagerAdapter {        @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, final int position) {            //加载布局视图            View view = CommonUtils.inflate(R.layout.roolviewpager_item);            ImageView iv_roolviewpager = (ImageView) view.findViewById(R.id.iv_roolviewpager);            //ImageLoader进行异步加载图片            ImageLoader.getInstance().displayImage(imageUrlList.get(position % imageUrlList.size()), iv_roolviewpager, imageOptions);            container.addView(view);            //点击冲突事件            view.setOnTouchListener(new OnTouchListener() {                private long downTime;                private float downY;                private float downX;                @Override                public boolean onTouch(View v, MotionEvent event) {                    switch (event.getAction()) {                        case MotionEvent.ACTION_DOWN:                            downX = event.getX();                            downY = event.getY();                            //按下时间                            downTime = System.currentTimeMillis();                            handler.removeCallbacksAndMessages(null);                            break;                        case MotionEvent.ACTION_UP:                            float upX = event.getX();                            float upY = event.getY();                            //抬起时间                            long upTime = System.currentTimeMillis();                            if (downX == upX && downY == upY && upTime - downTime < 1000) {                                  //自定义监听(下方有)                               if (onPageClickListener != null) {                                    onPageClickListener.setOnPage(position % imageUrlList.size());                                }                            }                            handler.sendEmptyMessageDelayed(RoolZERO, 2000);                            break;                    }                    return true;                }            });            return view;        }        @Override        public void destroyItem(ViewGroup container, int position, Object object) {            container.removeView((View) object);        }    }    /**     * 当不在当前屏幕时停止轮播     */    @Override    protected void onDetachedFromWindow() {        super.onDetachedFromWindow();        //停止发送消息        handler.removeCallbacksAndMessages(null);    }}
  //加载布局视图
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<?xml version="1.0" encoding="utf-8"?><RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="match_parent"    android:layout_height="match_parent"    >    <ImageView        android:id="@+id/iv_roolviewpager"        android:layout_width="580px"        android:layout_height="350px"        android:background="@drawable/sharp_activity_info"        android:layout_centerInParent="true"        android:layout_centerVertical="true"        android:layout_marginBottom="5px"        /></RelativeLayout>自定义监听事件 ========================================================================= 
public interface OnPageClickListener {    void setOnPage(int position);}