Android 广告图片自动轮播控件

public class ImageCycleView extends LinearLayout {
	
	public static  boolean isenaled = true;
	//时间
	public static int time;
	/**
	 * 上下文
	 */
	private Context mContext;
	/**
	 * 图片轮播视图
	 */
	private ViewPager mAdvPager = null;
	/**
	 * 滚动图片视图适配
	 */
	private ImageCycleAdapter mAdvAdapter;
	/**
	 * 图片轮播指示器控件
	 */
	private ViewGroup mGroup;

	/**
	 * 图片轮播指示个图
	 */
	private ImageView mImageView = null;

	/**
	 * 滚动图片指示视图列表
	 */
	private ImageView[] mImageViews = null;

	/**
	 * 图片滚动当前图片下标
	 */

	private boolean isStop;
	ArrayList imageNameList;

	/**
	 * @param context
	 */
	public ImageCycleView(Context context) {
		super(context);
	}

	/**
	 * @param context
	 * @param attrs
	 */
	public ImageCycleView(Context context, AttributeSet attrs) {
		super(context, attrs);
		mContext = context;
		LayoutInflater.from(context).inflate(R.layout.ad_cycle_view, this);
		mAdvPager = (ViewPager) findViewById(R.id.adv_pager);
		mAdvPager.setOnPageChangeListener(new GuidePageChangeListener());
		mAdvPager.setOnTouchListener(new OnTouchListener() {
			@Override
			public boolean onTouch(View v, MotionEvent event) {
				switch (event.getAction()) {
				case MotionEvent.ACTION_UP:
					// 开始图片滚动
					startImageTimerTask();
					break;
				default:
					// 停止图片滚动
					stopImageTimerTask();
					break;
				}
				return false;
			}
		});
		// 滚动图片右下指示器视
		mGroup = (ViewGroup) findViewById(R.id.viewGroup);
	}

	/**
	 * 装填图片数据
	 * 
	 * @param imageUrlList
	 * @param imageCycleViewListener
	 */
	public void setImageResources(ArrayList imageUrlList,
			ImageCycleViewListener imageCycleViewListener) {
		// 清除
		mGroup.removeAllViews();
		// 图片广告数量
		final int imageCount = imageUrlList.size();
		mImageViews = new ImageView[imageCount];
		for (int i = 0; i < imageCount; i++) {
			mImageView = new ImageView(mContext);
			LayoutParams params = new LayoutParams(LayoutParams.WRAP_CONTENT,
					LayoutParams.WRAP_CONTENT);
			params.leftMargin = 30;
			mImageView.setScaleType(ScaleType.CENTER_CROP);
			mImageView.setLayoutParams(params);

			mImageViews[i] = mImageView;
			if (i == 0) {
				mImageViews[i]
						.setBackgroundResource(R.drawable.indicators_now);
			} else {
				mImageViews[i]
						.setBackgroundResource(R.drawable.indicators_default);
			}
			mGroup.addView(mImageViews[i]);
		}

		mAdvAdapter = new ImageCycleAdapter(mContext, imageUrlList,
				imageCycleViewListener);
		mAdvPager.setAdapter(mAdvAdapter);
		startImageTimerTask();
	}

	/**
	 * 图片轮播(手动控制自动轮播与否，便于资源控件）
	 */
	public void startImageCycle() {
		startImageTimerTask();
	}

	/**
	 * 暂停轮播—用于节省资源
	 */
	public void pushImageCycle() {
		stopImageTimerTask();
	}

	/**
	 * 图片滚动任务
	 */
	private void startImageTimerTask() {
		stopImageTimerTask();
		// 图片滚动
		mHandler.postDelayed(mImageTimerTask, time * 1000);
	}

	/**
	 * 停止图片滚动任务
	 */
	private void stopImageTimerTask() {
		isStop = true;
		mHandler.removeCallbacks(mImageTimerTask);
	}

	private Handler mHandler = new Handler();

	/**
	 * 图片自动轮播Task
	 */
	private Runnable mImageTimerTask = new Runnable() {
		@Override
		public void run() {
			if (mImageViews != null) {
				mAdvPager.setCurrentItem(mAdvPager.getCurrentItem() + 1);
				if (!isStop) { // if isStop=true //当你退出后 要把这个给停下来 不然 这个一直存在
								// 就一直在后台循环
					mHandler.postDelayed(mImageTimerTask, 3000);
				}

			}
		}
	};

	/**
	 * 轮播图片监听
	 * 
	 * @author minking
	 */
	private final class GuidePageChangeListener implements OnPageChangeListener {
		@Override
		public void onPageScrollStateChanged(int state) {
			if (state == ViewPager.SCROLL_STATE_IDLE)
				startImageTimerTask();
		}

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

		@Override
		public void onPageSelected(int index) {
			index = index % mImageViews.length;
			// 设置当前显示的图片
			// 设置图片滚动指示器背
			mImageViews[index]
					.setBackgroundResource(R.drawable.indicators_now);
			for (int i = 0; i < mImageViews.length; i++) {
				if (index != i) {
					mImageViews[i]
							.setBackgroundResource(R.drawable.indicators_default);
				}
			}
		}
	}

	private class ImageCycleAdapter extends PagerAdapter {

		/**
		 * 图片视图缓存列表
		 */
		private ArrayList mImageViewCacheList;

		/**
		 * 图片资源列表
		 */
		private ArrayList mAdList = new ArrayList();

		/**
		 * 广告图片点击监听
		 */
		private ImageCycleViewListener mImageCycleViewListener;

		private Context mContext;

		public ImageCycleAdapter(Context context, ArrayList adList,
				ImageCycleViewListener imageCycleViewListener) {
			this.mContext = context;
			this.mAdList = adList;
			mImageCycleViewListener = imageCycleViewListener;
			mImageViewCacheList = new ArrayList();
		}

		@Override
		public int getCount() {
			// return mAdList.size();
			return Integer.MAX_VALUE;
		}

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

		@Override
		public Object instantiateItem(ViewGroup container, final int position) {
			AdEntity entity = mAdList.get(position % mAdList.size());
			//String imageUrl = mAdList.get(position % mAdList.size());
			SmartImageView imageView = null;
			if (mImageViewCacheList.isEmpty()) {
				imageView = new SmartImageView(mContext);
				imageView.setLayoutParams(new LayoutParams(
						LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT));

				// test
				imageView.setScaleType(ImageView.ScaleType.CENTER_CROP);
				// 设置图片点击监听
				imageView.setOnClickListener(new OnClickListener() {
					@Override
					public void onClick(View v) {
						if (isenaled == true) {
							mImageCycleViewListener.onImageClick(position % mAdList.size(), v);
						}
					}
				});
			} else {
				imageView = mImageViewCacheList.remove(0);
			}
			imageView.setTag(entity.getAdimg());
			container.addView(imageView);
			imageView.setImageUrl(entity.getAdimg());
			return imageView;
		}

		@Override
		public void destroyItem(ViewGroup container, int position, Object object) {
			SmartImageView view = (SmartImageView) object;
			mAdvPager.removeView(view);
			mImageViewCacheList.add(view);

		}

	}

	/**
	 * 轮播控件的监听事件
	 * 
	 * @author minking
	 */
	public static interface ImageCycleViewListener {

		/**
		 * 单击图片事件
		 * 
		 * @param position
		 * @param imageView
		 */
		public void onImageClick(int position, View imageView);
	}