java制作广告图片自动轮播控件

首页图片的轮播

/** * 广告图片自动轮播控件</br> *  */public class ImageCycleView extends LinearLayout {  /**   * 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;   /**   * 游标是圆形还是长条，要是设置为0是长条，要是1就是圆形 默认是圆形   */  public int stype=1;   /**   * @param context   */  public ImageCycleView(Context context) {    super(context);  }   /**   * @param context   * @param attrs   */  @SuppressLint("Recycle")  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());    // 滚动图片右下指示器视    mGroup = (ViewGroup) findViewById(R.id.viewGroup);     }   /**   * 触摸停止计时器，抬起启动计时器   */  @Override  public boolean dispatchTouchEvent(MotionEvent event) {    if(event.getAction()==MotionEvent.ACTION_UP){      // 开始图片滚动      startImageTimerTask();    }else{      // 停止图片滚动      stopImageTimerTask();    }    return super.dispatchTouchEvent(event);  }  /**   * 装填图片数据   *    * @param imageUrlList   * @param imageCycleViewListener   */  public void setImageResources(ArrayList<Integer> imageUrlList ,ImageCycleViewListener imageCycleViewListener,int stype){    this.stype=stype;    // 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) {        if(this.stype==1)//         mImageViews[i].setBackgroundResource(R.drawable.banner_dian_focus);          mImageViews[i].setBackgroundResource(R.drawable.cicle_banner_dian_focus);//换点        else          mImageViews[i].setBackgroundResource(R.drawable.cicle_banner_dian_focus);      } else {        if(this.stype==1)        // mImageViews[i].setBackgroundResource(R.drawable.banner_dian_blur);        mImageViews[i].setBackgroundResource(R.drawable.cicle_banner_dian_blur);        else          mImageViews[i].setBackgroundResource(R.drawable.cicle_banner_dian_blur);      }      mGroup.addView(mImageViews[i]);    }     mAdvAdapter = new ImageCycleAdapter(mContext, imageUrlList ,imageCycleViewListener);    mAdvPager.setAdapter(mAdvAdapter);    mAdvPager.setCurrentItem(Integer.MAX_VALUE/2);    startImageTimerTask();  }        public void setImageResources2(ArrayList<Integer> imageUrlList ,ImageCycleViewListener imageCycleViewListener,int stype){    this.stype=stype;    // 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) {        if(this.stype==1)//         mImageViews[i].setBackgroundResource(R.drawable.banner_dian_focus);          mImageViews[i].setBackgroundResource(R.drawable.cicle_banner_dian_focus);//换点        else          mImageViews[i].setBackgroundResource(R.drawable.cicle_banner_dian_focus);      } else {        if(this.stype==1)        // mImageViews[i].setBackgroundResource(R.drawable.banner_dian_blur);        mImageViews[i].setBackgroundResource(R.drawable.cicle_banner_dian_blur);        else          mImageViews[i].setBackgroundResource(R.drawable.cicle_banner_dian_blur);      }      mGroup.addView(mImageViews[i]);    }     mAdvAdapter = new ImageCycleAdapter(mContext, imageUrlList ,imageCycleViewListener);    mAdvPager.setAdapter(mAdvAdapter);    mAdvPager.setCurrentItem(Integer.MAX_VALUE/2);    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, 5000);  }   /**   * 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, 5000);        }       }    }  };   /**   * 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      if(stype!=1)        mImageViews[index].setBackgroundResource(R.drawable.cicle_banner_dian_focus);      else        mImageViews[index].setBackgroundResource(R.drawable.cicle_banner_dian_focus);      for (int i = 0; i < mImageViews.length; i++) {        if (index != i) {          if(stype!=1)            mImageViews[i].setBackgroundResource(R.drawable.cicle_banner_dian_blur);          else            mImageViews[i].setBackgroundResource(R.drawable.cicle_banner_dian_blur);        }      }    }  }   private class ImageCycleAdapter extends PagerAdapter {     /**     * 图片视图缓存列表     */    private ArrayList<SmartImageView> mImageViewCacheList;     /**     * 图片资源列表     */    //private ArrayList<String> mAdList = new ArrayList<String>();    private ArrayList<Integer> mAdList = new ArrayList<Integer>();     /**     * 广告图片点击监听     */    private ImageCycleViewListener mImageCycleViewListener;     private Context mContext;//   public ImageCycleAdapter(Context context, ArrayList<String> adList , ImageCycleViewListener imageCycleViewListener) {//     this.mContext = context;//     this.mAdList = adList;//     mImageCycleViewListener = imageCycleViewListener;//     mImageViewCacheList = new ArrayList<SmartImageView>();//   }    public ImageCycleAdapter(Context context, ArrayList<Integer> adList , ImageCycleViewListener imageCycleViewListener) {      this.mContext = context;      this.mAdList = adList;      mImageCycleViewListener = imageCycleViewListener;      mImageViewCacheList = new ArrayList<SmartImageView>();    }     @Override    public int getCount() {      return Integer.MAX_VALUE;    }    @Override    public boolean isViewFromObject(View view, Object obj) {      return view == obj;    }     @Override    public Object instantiateItem(ViewGroup container, final int position) {      int imageUrl = mAdList.get(position%mAdList.size());      Log.e("imageUrl:",position%mAdList.size()+"--"+imageUrl+"");      SmartImageView imageView = null;      if (mImageViewCacheList.isEmpty()) {        imageView = new SmartImageView(mContext);        imageView.setLayoutParams(new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT));         //test        imageView.setScaleType(ImageView.ScaleType.CENTER_CROP);               }       else {        imageView = mImageViewCacheList.remove(0);      }      imageView.setTag(imageUrl);      container.addView(imageView);      //imageView.setImageUrl(imageUrl);      imageView.setBackgroundResource(imageUrl);      // 设置图片点击监听      imageView.setOnClickListener(new OnClickListener() {        @Override        public void onClick(View v) {          mImageCycleViewListener.onImageClick(position%mAdList.size(), v);        }      });      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);  } }

我们再来看个基于安卓ViewPager的图片轮播控件

package me.lanfog.myandroid.widget; import java.util.ArrayList;import java.util.List; 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.util.Log;import android.view.View;import android.view.ViewGroup;import android.widget.ImageView; public class PageFlipper extends ViewPager {   private String TAG = PageFlipper.class.getSimpleName();     private List<View> views;  private PagerAdapter adapter = new PagerAdapter() {         @Override    public Object instantiateItem(ViewGroup container, int position) {      View v = views.get(position);      container.addView(v);      return v;    }         @Override    public boolean isViewFromObject(View arg0, Object arg1) {      return arg0 == arg1;    }         @Override    public int getItemPosition(Object object) {      return views.indexOf(object);    }         @Override    public void destroyItem(ViewGroup container, int position, Object object) {      container.removeView((View)object);    }         @Override    public int getCount() {      return views == null ? 0 : views.size();    }  };  private OnPageChangeListener listener = new OnPageChangeListener() {         /**     * 将控件位置转化为数据集中的位置      */    public int convert(int position){      return position == 0 ? views.size()-1 : ( position > views.size() ? 0 : position-1 );    }         @Override    public void onPageSelected(int position) {      if(listener2 != null){        listener2.onPageSelected(convert(position));      }    }         @Override    public void onPageScrolled(int position, float percent, int offset) {      if(listener2 != null){        listener2.onPageScrolled(convert(position), percent, offset);      }             if(percent == 0){        if(position == 0) // 切换到倒数第二页          setCurrentItem(( views.size() - 2 ) % views.size(), false);        else if(position == views.size() - 1) // 切换到正数第二页          setCurrentItem(1, false);      }    }         @Override    public void onPageScrollStateChanged(int state) {      if(listener2 != null){        listener2.onPageScrollStateChanged(state);      }             switch (state) {      case SCROLL_STATE_IDLE: // 闲置                 if(!handler.hasMessages(START_FLIPPING))          handler.sendEmptyMessageDelayed(START_FLIPPING, 3000); // 延时滚动                   break;      case SCROLL_STATE_DRAGGING: // 拖动中         handler.sendEmptyMessage(STOP_FLIPPING); // 取消滚动                 break;      case SCROLL_STATE_SETTLING: // 拖动结束        break;      }    }  }, listener2;     private final int START_FLIPPING = 0;   private final int STOP_FLIPPING = 1;      private Handler handler = new Handler(){         public void handleMessage(Message msg) {             switch (msg.what) {      case START_FLIPPING:                 if(views.size() > 3) // 因为前后页是辅助页，所以此处3也就是只有1页          setCurrentItem((getCurrentItem() + 1) % views.size());                 handler.sendEmptyMessageDelayed(START_FLIPPING, 3000); // 延时滚动                 break;      case STOP_FLIPPING:                 handler.removeMessages(START_FLIPPING);                 break;      }    }  };     public PageFlipper(Context context, AttributeSet attrs) {    super(context, attrs);    init();  }   public PageFlipper(Context context) {    super(context);    init();  }   private void init(){         setOffscreenPageLimit(1); // 最大页面缓存数量    setAdapter(adapter); // 适配器    super.setOnPageChangeListener(listener); // 监听器     handler.sendEmptyMessageDelayed(START_FLIPPING, 3000); // 延时滚动  }     public void setViews(int[] ids){    this.views = new ArrayList<View>();    for(int i=0;i<ids.length+2;i++){ // 头部新增一个尾页，尾部新增一个首页             ImageView iv = new ImageView(getContext());      iv.setImageResource(ids[i == 0 ? ids.length-1 : ( i > ids.length ? 0 : i-1 )]);      iv.setScaleType(ImageView.ScaleType.FIT_XY);      this.views.add(iv);     }    setCurrentItem(1); // 首页    this.adapter.notifyDataSetChanged();  }     @Override  public void setOnPageChangeListener(OnPageChangeListener listener) {    this.listener2 = listener;  }   }