ArrayList<String> Adlist = new ArrayList<>();

mBannerView.setImgUrlData(Adlist);

 mBannerView.setOnHeaderViewClickListener(new BannerView.HeaderViewClickListener() {
            @Override
            public void HeaderViewClick(int position) {

            }
        });

/**
 * android banner圖
 */
 

public class BannerView extends FrameLayout implements OnPageChangeListener {

    private Context mContext;
    private ViewPager mViewPager;
    private LinearLayout mDotLl;
    private List<String> mUrlList;
    private double heightRatio =0.5;
    private int duration=3000;



    private List<ImageView> dotList = null
 
;
    private MyAdapter mAdapter = null;
    private Handler mHandler = null;
    private AutoRollRunnable mAutoRollRunnable = null;

    private int prePosition = 0;

    private HeaderViewClickListener headerViewClickListener;

    public BannerView(Context context) {
        this(context, null);
    }

    public
 
 BannerView(Context context, AttributeSet attrs) {
        this(context, attrs, 0);
    }

    public BannerView(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
        this.mContext = context;
        initView();
        initData();
        initListener();
    }

    //初始化view
    private void initView() {
        View.inflate(mContext, R.layout.view_header, this);
        mViewPager = (ViewPager) findViewById(R.id.vp);
        mDotLl = (LinearLayout) findViewById(R.id.ll_dot);

        //讓banner的高度是螢幕的1/4
//        ViewGroup.LayoutParams vParams = mViewPager.getLayoutParams();
//        vParams.height = (int) (vParams.width * heightRatio);
//        mViewPager.setLayoutParams(vParams);
    }

    //初始化資料
    private void initData() {
        dotList = new ArrayList<ImageView>();
        mAutoRollRunnable = new AutoRollRunnable();
        mHandler = new Handler();
        mAdapter = new MyAdapter();
    }

    private void initListener() {
        mViewPager.addOnPageChangeListener(this);
    }


    public void setHeightRatio(double heightRatio){
        this.heightRatio=heightRatio;
    }

    /**
     * 設定資料
     *
     * @param urlList
     */
    public void setImgUrlData(List<String> urlList) {
        this.mUrlList = urlList;
        if (mUrlList != null && !mUrlList.isEmpty()) {
            //清空資料
            dotList.clear();
            mDotLl.removeAllViews();
            ImageView dotIv;
            LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
            for (int i = 0; i < mUrlList.size(); i++) {
                dotIv = new ImageView(mContext);
                if (i == 0) {
                    dotIv.setBackgroundResource(R.mipmap.black_dot);
                } else {
                    dotIv.setBackgroundResource(R.mipmap.white_dot);
                }
                //設定點的間距
                params.setMargins(0, 0, DisplayUtil.dip2px(mContext, 5), 0);
                dotIv.setLayoutParams(params);

                if (mUrlList.size()>1){
                    //新增點到view上
                    mDotLl.addView(dotIv);
                    isRoll=true;
                }else {
                    isRoll=false;
                }
                //新增到集合中, 以便控制其切換
                dotList.add(dotIv);
            }
        }

        mAdapter = new MyAdapter();
        mViewPager.setAdapter(mAdapter);


        //設定viewpager初始位置, +10000就夠了
        mViewPager.setCurrentItem(urlList.size());

        startRoll();
    }


    public boolean isRoll=false;

    /**
     * 設定點選事件
     *
     * @param headerViewClickListener
     */
    public void setOnHeaderViewClickListener(HeaderViewClickListener headerViewClickListener) {
        this.headerViewClickListener = headerViewClickListener;
    }


    //開始輪播
    public void startRoll() {
        mAutoRollRunnable.start();
    }

    // 停止輪播
    public void stopRoll() {

        mAutoRollRunnable.stop();
    }

    private class AutoRollRunnable implements Runnable {

        //是否在輪播的標誌
        boolean isRunning = false;

        public void start() {
            if (!isRoll){
                return;
            }
            if (!isRunning) {
                isRunning = true;
                mHandler.removeCallbacks(this);
                mHandler.postDelayed(this, duration);
            }
        }

        public void stop() {
            if (isRunning) {
                mHandler.removeCallbacks(this);
                isRunning = false;
            }
        }

        @Override
        public void run() {
            if (isRunning) {
                mViewPager.setCurrentItem(mViewPager.getCurrentItem() + 1);
                mHandler.postDelayed(this, duration);
            }
        }
    }

    public interface HeaderViewClickListener {
        void HeaderViewClick(int position);
    }

    private class MyAdapter extends PagerAdapter {

        //為了複用
        private List<ImageView> imgCache = new ArrayList<ImageView>();

        @Override
        public int getCount() {
            //無限滑動
            return Integer.MAX_VALUE;
        }

        @Override
        public boolean isViewFromObject(View view, Object o) {
            return view == o;
        }

        @Override
        public Object instantiateItem(ViewGroup container, final int position) {

            ImageView iv;

            //獲取ImageView物件
            if (imgCache.size() > 0) {
                iv = imgCache.remove(0);
            } else {
                iv = new ImageView(mContext);
            }
            iv.setOnTouchListener(new OnTouchListener() {
                private int downX = 0;
                private long downTime = 0;

                @Override
                public boolean onTouch(View v, MotionEvent event) {
                    switch (event.getAction()) {
                        case MotionEvent.ACTION_DOWN:
                            mAutoRollRunnable.stop();
                            //獲取按下的x座標
                            downX = (int) v.getX();
                            downTime = System.currentTimeMillis();
                            break;
                        case MotionEvent.ACTION_UP:
                            mAutoRollRunnable.start();
                            int moveX = (int) v.getX();
                            long moveTime = System.currentTimeMillis();
                            if (downX == moveX && (moveTime - downTime < 500)) {//點選的條件
                                //輪播圖回撥點選事件
                                headerViewClickListener.HeaderViewClick(position % mUrlList.size());
                            }
                            break;
                        case MotionEvent.ACTION_CANCEL:
                            mAutoRollRunnable.start();
                            break;
                    }
                    return true;
                }
            });

            //載入圖片
            ImageUtils.imageLoaderBanner(iv,mUrlList.get(position % mUrlList.size()));
            container.addView(iv);

            return iv;
        }

        @Override
        public void destroyItem(ViewGroup container, int position, Object object) {
            if (object != null && object instanceof ImageView) {
                ImageView iv = (ImageView) object;
                container.removeView(iv);
                imgCache.add(iv);
            }
        }
    }

    @Override
    public void onPageSelected(int position) {
        dotList.get(prePosition).setBackgroundResource(R.mipmap.white_dot);
        dotList.get(position % dotList.size()).setBackgroundResource(R.mipmap.black_dot);
        prePosition = position % dotList.size();
    }

    @Override
    public void onPageScrollStateChanged(int arg0) {

    }

    @Override
    public void onPageScrolled(int arg0, float arg1, int arg2) {

    }

    //停止輪播
    @Override
    protected void onDetachedFromWindow() {
        super.onDetachedFromWindow();
        stopRoll();
    }


    public void setDuration(int time){
        if (time>500){
            duration=time;
        }
    }
}