/**  * ScrollBanner 支持滑屏效果的FrameLayout子類，可設(shè)置屏幕數(shù)量，尺寸。<br/>  * 典型的用法：<br/>  * ScrollBanner scrollBanner = new ScrollBanner(this, mScreenWidth, 100, this);<br/>  * linearLayout.addView(scrollBanner);<br/>  *注意事項：<br/>  *1.如果重新設(shè)置ScrollBanner的LayoutParams，則參數(shù)中的寬和高屬性將被忽略，仍然采用對象實例化的寬和高<br/>  *2.點擊事件的回調(diào)如果設(shè)為null，則采用默認的事件回調(diào)<br/>  *3.通過setOverScrollMode來設(shè)置 banner是否能夠滑出屏幕的邊界<br/>  *4通過xml方式加載banner，需要進行如下調(diào)用：<br/>  * setResolution(width, height);<br/>  setOnBannerClickListener(bannerClickListener);<br/>  showBanner()<br/>  * @author singwhatiwanna  * @version 2013.3.4  *  */ public class ScrollBanner extends FrameLayout implements ComponentCallBack.OnBannerClickListener, ResponseHandler.BannerInfoHandler {   private static final String TAG = "ScrollBanner";   private HorizontalScrollViewEx mHorizontalScrollViewEx;   //ScrollBanner的子view  private LinearLayout linearLayoutScrolLayout;   //linearLayoutScrolLayout的子view，用于放置若干個小圓點  private LinearLayout linearLayoutForDot;   private Scroller mScroller;  private Context mContext;  private OnBannerClickListener mBannerClickListener;   //屏幕及其bitmap  private List<View> mLinearLayoutScreens = new ArrayList<View>();  private List<Bitmap> mBannerBitmaps = new ArrayList<Bitmap>();   //banner信息  private List<BannerItem> mBannerItemsList = new ArrayList<BannerItem>();  //小圓點  private List<ImageView> mImageViewList = new ArrayList<ImageView>();  private Drawable mPageIndicator;  private Drawable mPageIndicatorFocused;   //banner默認圖片  private Bitmap mDefaultBitmap;   private int mScreenWidth;  private int mScreenHeight;  private int mScrollX;   //current screen index  private int mWhich = 0;   public static final int MESSAGE_AUTO_SCROLL = 1;   public static final int MESSAGE_FETCH_BANNER_SUCCESS = 2;   public static final int MARGIN_BOTTOM = 2;   //480*150 banner的圖片尺寸 150.0/480=0.3125f  public static final float ratio = 0.3125f;   //banner的位置  private int mLocation = -1;   //banner分為幾屏  private int PAGE_COUNT = 4;   //滑動方向 是否向右滑動  private boolean mScrollToRight = true;   //是否自動滑屏  private boolean mTimerResume = true;   //標志用戶是否手動滑動了屏幕  private boolean mByUserAction = false;   //標志banner是否可以滑出邊界  private boolean mOverScrollMode = false;  //標志banner可以滑出邊界多少像素  private int mOverScrollDistance = 0;   //定時器 用于banner的自動播放  final Timer timer = new Timer();   //定時器的時間間隔 單位：ms  public static final int TIMER_DURATION = 5000;   private TimerTask mTimerTask = new TimerTask()  {  @Override  public void run()  {   if (mTimerResume && !mByUserAction)   {   mHandler.sendEmptyMessage(MESSAGE_AUTO_SCROLL);   }   mByUserAction = false;  }  };   //ScrollBanner私有handler 用于處理內(nèi)部邏輯  private Handler mHandler = new Handler()  {  public void handleMessage(Message msg)  {   //表示已經(jīng)執(zhí)行了onDetachedFromWindow，banner已經(jīng)被銷毀了   if( mBannerBitmaps == null || mLinearLayoutScreens == null ||    mImageViewList == null || mBannerItemsList == null || mContext == null )   return;     switch (msg.what)   {   case MESSAGE_AUTO_SCROLL:   if (mWhich == PAGE_COUNT - 1)    mScrollToRight = false;   else if(mWhich == 0)   {    mScrollToRight = true;   }    if (mScrollToRight)    mWhich++;   else   {    mWhich--;   }    mHorizontalScrollViewEx.switchView(mWhich);   break;   case MESSAGE_FETCH_BANNER_SUCCESS:   int more = 0;   if(mBannerItemsList != null)    more = mBannerItemsList.size() - PAGE_COUNT;   if(mBannerItemsList.size() > 0)   {    //如果有banner 顯示它    ScrollBanner.this.show(true);   }   //如果后臺返回的banneritem的數(shù)量大于預(yù)設(shè)值4   if(more > 0)   {    for (int i = 0; i < more; i++)    addBannerItem();   }   fetchBannerImages();   break;    default:   break;   }  };  };   //用于獲取bitmap  private Handler mBitmapHandler = new Handler()  {   public void handleMessage(Message msg)  {   //表示已經(jīng)執(zhí)行了onDetachedFromWindow，banner已經(jīng)被銷毀了   if( mBannerBitmaps == null || mLinearLayoutScreens == null ||    mImageViewList == null || mBannerItemsList == null || mContext == null )   return;     Bitmap bitmap = (Bitmap)msg.obj;   String urlString = msg.getData().getString("url");   Logger.d(TAG, "url=" + urlString);   if (urlString == null || bitmap == null || mBannerItemsList == null)   {   Logger.w(TAG, "bitmap=null imgurl=" + urlString);   return;   }    for( int i = 0; i < mBannerItemsList.size(); i++ )   {   BannerItem item = mBannerItemsList.get(i);   if(item != null && urlString.equals(item.imgUrl) )   {    Logger.d(TAG, "find " + i + urlString);    if( mBannerBitmaps != null )    {    mBannerBitmaps.set( i, bitmap );    setBannerImages(i);    }    break;   }   }    };   };   public ScrollBanner(Context context)  {  this(context, null);  }   public ScrollBanner(Context context, AttributeSet attrs)  {  super(context, attrs);  mContext = context;  }   public ScrollBanner(Context context, AttributeSet attrs, int defStyle)  {  super(context, attrs, defStyle);  mContext = context;  }   /**  *  * @param context activity實例  * @param width banner的寬度 單位px  * @param height banner的高度 單位dip,-1表示根據(jù)圖片比例自適應(yīng)高度  * @param bannerClickListener 單擊banner的回調(diào)接口  */  public ScrollBanner(Context context, final int width, final int height, OnBannerClickListener bannerClickListener)  {  this(context, null);   int activityId = ( (BaseActivity)context ).activityId();  if(activityId == BaseActivity.ACCOUNT_ID)//位置3   mLocation = 3;  else if(activityId == BaseActivity.GAMEZONE_ID)//位置2  {   mLocation = 2;  }    //初始化時不顯示banner  this.show(false);  setResolution(width, height);  setOnBannerClickListener(bannerClickListener);  setDefaultBannerImages();  fetchBannerInfo();  }   /**  * 通過xml方式加載banner，必須調(diào)用此方法才能顯示  */  public void showBanner()  {  int activityId = ( (BaseActivity)mContext ).activityId();  if(activityId == BaseActivity.ACCOUNT_ID)//位置3   mLocation = 3;  else if(activityId == BaseActivity.GAMEZONE_ID)//位置2  {   mLocation = 2;  }    setDefaultBannerImages();  fetchBannerInfo();  }   /**  * 暫停滾動  */  public void pauseScroll()  {  mTimerResume = false;  }   /**  * 恢復(fù)滾動  */  public void resumeScroll()  {  mTimerResume = true;  }   /**  * 設(shè)置回調(diào)接口  * @param callBack 單擊banner的回調(diào)接口  */  public void setOnBannerClickListener(OnBannerClickListener bannerClickListener)  {  mBannerClickListener = (bannerClickListener != null ? bannerClickListener : ScrollBanner.this);  }   /**  * 設(shè)置banner的解析度  * @param width banner的寬度  * @param height banner的高度  */  public void setResolution(final int width, final int height)  {  int heightInPx = height;    if(height == -1)   heightInPx = (int)(ratio * width) ;  else  {   Resources resources = getResources();   heightInPx = Math.round( TypedValue.applyDimension(    TypedValue.COMPLEX_UNIT_DIP, height, resources.getDisplayMetrics()) );  }    mScreenWidth = width;  mScreenHeight = heightInPx;  setLayoutParams(new LayoutParams(width, heightInPx));   initScrollView();  }   /**  * 獲取banner的高度  * @return banner的高度 單位：px  */  public int getHeightPixels()  {  return mScreenHeight;  }   /**  * 設(shè)置banner是否可以彈性滑出邊界  * @param canOverScroll true表示可以滑出邊界，false不能  */  public void setOverScrollMode(boolean canOverScroll)  {  mOverScrollMode = canOverScroll;  if(canOverScroll == false)   mOverScrollDistance = 0;  }   /**  * 向后臺獲取banner的各種信息  */  private void fetchBannerInfo()  {  NetworkManager netManager = (NetworkManager) AppEngine.getInstance().getManager(   IManager.NETWORK_ID);  netManager.getBannerInfo( String.valueOf(mLocation), ScrollBanner.this );  }   /**  * 獲取banner的滑屏圖像  */  private void setDefaultBannerImages()  {  //為banner設(shè)置默認bitmap  BitmapFactory.Options bitmapFactoryOptions = new BitmapFactory.Options();  bitmapFactoryOptions.inJustDecodeBounds = false;  bitmapFactoryOptions.inSampleSize = 2;   Resources res=mContext.getResources();  mDefaultBitmap = BitmapFactory.decodeResource(res, R.drawable.banner_image_default, bitmapFactoryOptions);    for(int i = 0; i < PAGE_COUNT; i++)   mBannerBitmaps.add(i, mDefaultBitmap);   //初始化BannerItem對象  for (int i = 0; i < PAGE_COUNT; i++)   mBannerItemsList.add(i, null);   setBannerImages(-1);  }   private void fetchBannerImages()  {  //表示已經(jīng)執(zhí)行了onDetachedFromWindow，banner已經(jīng)被銷毀了  if( mBannerItemsList == null )   return;    //ImageManager 根據(jù)url向其獲取bitmap  ImageManager imageManager = (ImageManager)AppEngine.getInstance().   getManager(IManager.IMAGE_ID);   BannerItem item = null;  for(int i = 0; i < PAGE_COUNT; i++)  {   try   {   item = mBannerItemsList.get(i);   }   catch (IndexOutOfBoundsException e)   {   Logger.e(TAG, "fetchBannerImages error: " + e);   }   catch (Exception e)   {   Logger.e(TAG, "fetchBannerImages error: " + e);   }   //ImageManager為多線程，采用常見的三級cache策略（內(nèi)存、文件、網(wǎng)絡(luò)）   if( item != null && item.imgUrl != null )   imageManager.loadBitmap( item.imgUrl, mBitmapHandler );  }  }   /**  * 設(shè)置banner的滑屏圖像  * @param position 如果position=-1，則表示設(shè)置全部bitmap  */  private void setBannerImages(final int position)  {  int size = mBannerBitmaps.size();  if (size < PAGE_COUNT || mLinearLayoutScreens == null)  {   return;  }  if(position >=0 && position < PAGE_COUNT )  {   Drawable drawable = mLinearLayoutScreens.get(position).getBackground();   mLinearLayoutScreens.get(position).setBackgroundDrawable   (new BitmapDrawable( mBannerBitmaps.get(position) ) );   drawable.setCallback(null);   drawable = null;     return;  }   for(int i = 0; i < PAGE_COUNT; i++)  {   mLinearLayoutScreens.get(i).setBackgroundDrawable(new BitmapDrawable(mBannerBitmaps.get(i)));  }  }   /**  * 是否顯示banner  * @param isShow true顯示 false不顯示  */  public void show(boolean isShow)  {  if(isShow)  {   this.setVisibility(View.VISIBLE);   mTimerResume = true;  }  else  {   this.setVisibility(View.GONE);   mTimerResume = false;  }  }   /**  * 切換到指定屏幕  * @param which 屏幕索引  */  public void switchToScreen(final int which)  {  mHorizontalScrollViewEx.switchView(which);  }   /**  * 設(shè)置屏幕的數(shù)量 （此函數(shù)暫不開放）  * @param count 屏幕數(shù)量  */  protected void setScreenCount(final int count)  {  PAGE_COUNT = count;  }   /**  * 設(shè)置偏移的距離 如果mOverScrollMode為false，則此設(shè)置無效 （此函數(shù)暫不開放）  * @param distance  */  protected void setOverScrollDistance(int distance)  {  if(distance < 0)   distance = 0;   mOverScrollDistance = mOverScrollMode ? distance : 0;  }   /**  * 切換小圓點  * @param position current screen index  */  private void switchScreenPosition(final int position)  {  if( mPageIndicator == null || mPageIndicatorFocused == null )   return;    int length = 0;  if(mImageViewList != null)   length = mImageViewList.size();  if (position >= length || position < 0 || length <= 0)  {   return;  }   for(int i = 0; i < length; i++)  {   mImageViewList.get(i).setImageDrawable(mPageIndicator);  }    mImageViewList.get(position).setImageDrawable(mPageIndicatorFocused);  }   /**  * 初始化整個FrameLayout視圖組  */  private void initScrollView()  {  setLayoutParams(new LayoutParams(mScreenWidth, mScreenHeight ));   linearLayoutScrolLayout = new LinearLayout(mContext);  linearLayoutScrolLayout.setBackgroundColor(Color.WHITE);  linearLayoutScrolLayout.setOrientation(LinearLayout.HORIZONTAL);    int mVersionCode = 8;  try  {   mVersionCode = Integer.valueOf(android.os.Build.VERSION.SDK);   Logger.d(TAG, "sdk version=" + mVersionCode);  }  catch (Exception e)  {   e.printStackTrace();  }  //針對android1.6及以下的特殊處理 此為android的低版本bug  if(mVersionCode <= 5)  {   linearLayoutScrolLayout.setBaselineAligned(false);  }    //初始化四個滑動view  for(int i = 0; i < PAGE_COUNT; i++)  {   LinearLayout linearLayoutScreen = new LinearLayout(mContext);   linearLayoutScreen.setOrientation(LinearLayout.VERTICAL);   linearLayoutScrolLayout.addView(linearLayoutScreen, new LayoutParams(    mScreenWidth,    LayoutParams.FILL_PARENT));    mLinearLayoutScreens.add(i, linearLayoutScreen);  }   //初始化小圓點視圖  RelativeLayout relativeLayout = new RelativeLayout(mContext);  relativeLayout.setLayoutParams(new LayoutParams(   LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT));   //linearLayoutForDot為小圓點視圖  linearLayoutForDot =new LinearLayout(mContext);  android.widget.RelativeLayout.LayoutParams layoutParams =   new android.widget.RelativeLayout.LayoutParams(LayoutParams.WRAP_CONTENT,    LayoutParams.WRAP_CONTENT);  //小圓點距底部的距離 單位:px  layoutParams.bottomMargin = MARGIN_BOTTOM;  layoutParams.rightMargin = MARGIN_BOTTOM;  layoutParams.addRule(android.widget.RelativeLayout.ALIGN_PARENT_BOTTOM);  layoutParams.addRule(android.widget.RelativeLayout.CENTER_HORIZONTAL);  linearLayoutForDot.setLayoutParams(layoutParams);  linearLayoutForDot.setOrientation(LinearLayout.HORIZONTAL);  linearLayoutForDot.setHorizontalGravity(Gravity.CENTER);  linearLayoutForDot.setVerticalGravity(Gravity.CENTER);  //下面兩句實現(xiàn)圓角半透明效果 不采用  // linearLayoutForDot.setBackgroundResource(R.drawable.round_corner_bg);  // linearLayoutForDot.getBackground().setAlpha(100);   //初始化4個小圓點  mPageIndicator = getResources().getDrawable(R.drawable.page_indicator);  mPageIndicatorFocused = getResources().getDrawable(R.drawable.page_indicator_focused);  for(int i = 0; i < PAGE_COUNT; i++)  {   ImageView imageView = new ImageView(mContext);   imageView.setImageDrawable(mPageIndicator);   mImageViewList.add(i, imageView);   LinearLayout.LayoutParams layoutParamsForDot =    new LinearLayout.LayoutParams(LayoutParams.WRAP_CONTENT,     LayoutParams.WRAP_CONTENT);   layoutParamsForDot.rightMargin = 5;    linearLayoutForDot.addView(imageView, layoutParamsForDot);  }  mImageViewList.get(0).setImageDrawable(mPageIndicatorFocused);  relativeLayout.addView(linearLayoutForDot);   mHorizontalScrollViewEx = new HorizontalScrollViewEx(mContext, null, mBannerClickListener);  mHorizontalScrollViewEx.setLayoutParams(new LayoutParams(   mScreenWidth * PAGE_COUNT,   LayoutParams.FILL_PARENT));  mHorizontalScrollViewEx.addView(linearLayoutScrolLayout, new LayoutParams(   LayoutParams.FILL_PARENT,   LayoutParams.FILL_PARENT));   mHorizontalScrollViewEx.setHorizontalScrollBarEnabled(false);  mHorizontalScrollViewEx.setHorizontalFadingEdgeEnabled(false);   addView(mHorizontalScrollViewEx);  addView(relativeLayout);   //自動滑屏 5秒一次  timer.schedule(mTimerTask, 5000, TIMER_DURATION);  }   /**  * 加一個banner頁面 TODO此函數(shù)寫的不好  */  private void addBannerItem()  {  //表示已經(jīng)執(zhí)行了onDetachedFromWindow，banner已經(jīng)被銷毀了  if( mBannerBitmaps == null || mLinearLayoutScreens == null ||   mImageViewList == null || mContext == null )   return;    //調(diào)整屏幕數(shù)量和總寬度  PAGE_COUNT += 1;  mHorizontalScrollViewEx.getLayoutParams().width = mScreenWidth * PAGE_COUNT;     //加載默認圖片資源  if(mDefaultBitmap == null)  {   BitmapFactory.Options bitmapFactoryOptions = new BitmapFactory.Options();   bitmapFactoryOptions.inJustDecodeBounds = false;   bitmapFactoryOptions.inSampleSize = 2;   Resources res=mContext.getResources();   mDefaultBitmap = BitmapFactory.decodeResource(res, R.drawable.banner_image_default, bitmapFactoryOptions);  }  mBannerBitmaps.add(mDefaultBitmap);  mBannerItemsList.add(null);  //加一個屏幕  LinearLayout linearLayoutScreen = new LinearLayout(mContext);  linearLayoutScreen.setOrientation(LinearLayout.VERTICAL);  linearLayoutScreen.setBackgroundDrawable(new BitmapDrawable( mBannerBitmaps.get(PAGE_COUNT - 1) ));  linearLayoutScrolLayout.addView(linearLayoutScreen, new LayoutParams(   mScreenWidth,   LayoutParams.FILL_PARENT));  mLinearLayoutScreens.add(linearLayoutScreen);    //加一個小圓點  ImageView imageView = new ImageView(mContext);  imageView.setImageDrawable(mPageIndicator);  mImageViewList.add(imageView);  LinearLayout.LayoutParams layoutParamsForDot =   new LinearLayout.LayoutParams(LayoutParams.WRAP_CONTENT,    LayoutParams.WRAP_CONTENT);  layoutParamsForDot.rightMargin = 5;  linearLayoutForDot.addView(imageView, layoutParamsForDot);  }   private class HorizontalScrollViewEx extends ViewGroup implements  OnGestureListener  {   private GestureDetector mGestureDetector;  private int mWhichScreen;   public HorizontalScrollViewEx(Context context, AttributeSet attrs, OnBannerClickListener bannerClickListener)  {   super(context, attrs);     mGestureDetector = new GestureDetector(this);   //解決長按屏幕后無法拖動的現(xiàn)象   mGestureDetector.setIsLongpressEnabled(false);    //構(gòu)造彈性滑動對象   mScroller = new Scroller(context);  }   /**   * 切換到指定屏幕   * @param whichScreen 屏幕index   */  public void switchView(int whichScreen)  {   if(mLinearLayoutScreens == null)   return;     // 防止非法參數(shù)   if (whichScreen < 0)   whichScreen = 0;   else if(whichScreen >= PAGE_COUNT)   whichScreen = PAGE_COUNT - 1;    Logger.i(TAG, "switch view to " + whichScreen);    int delta = whichScreen * mScreenWidth - HorizontalScrollViewEx.this.getScrollX();    //緩慢滾動到指定位置   mScroller.startScroll(getScrollX(), 0, delta, 0, Math.abs(delta) * 3);    // refresh   invalidate();    //delta>0 stands for user scroll view to right   if (delta > 0)   mScrollToRight = true;   else   {   mScrollToRight = false;   }    mWhichScreen = whichScreen;   mWhich = whichScreen;   //切換小圓點   switchScreenPosition(mWhichScreen);  }   /**   * 用戶輕觸觸摸屏，由1個MotionEvent ACTION_DOWN觸發(fā)   */  @Override  public boolean onDown(MotionEvent e)  {   Logger.i("MyGesture", "onDown");     mScrollX = HorizontalScrollViewEx.this.getScrollX();    return true;  }   /**   * 用戶輕觸觸摸屏，尚未松開或拖動，由一個1個MotionEvent ACTION_DOWN觸發(fā)   * 注意和onDown()的區(qū)別，強調(diào)的是沒有松開或者拖動的狀態(tài)   */  public void onShowPress(MotionEvent e)  {   Logger.i("MyGesture", "onShowPress");  }   /**   * 用戶（輕觸觸摸屏后）松開，由一個1個MotionEvent ACTION_UP觸發(fā)   */  public boolean onSingleTapUp(MotionEvent e)  {   Logger.i("MyGesture", "onSingleTapUp");   if(mBannerItemsList == null || mBannerItemsList.size() <= mWhichScreen)   return false;     BannerItem bannerItem = mBannerItemsList.get(mWhichScreen);    if(bannerItem != null)   {   BannerMotionEvent bannerMotionEvent =    new BannerMotionEvent(mWhichScreen, bannerItem.action, bannerItem.url,     bannerItem.gameId, bannerItem.gameType, bannerItem.title);   mBannerClickListener.onBannerClick(bannerMotionEvent);   }    return false;  }   /** 用戶按下觸摸屏、快速移動后松開，由1個MotionEvent ACTION_DOWN, 多個ACTION_MOVE,   * 1個ACTION_UP觸發(fā)   */  public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX,   float velocityY)  {   Logger.i("MyGesture", "onFling velocityX=" + velocityX);    mWhichScreen = velocityX > 0 ?    mWhichScreen - 1    : mWhichScreen + 1;   switchView(mWhichScreen);    return true;  }   /**   * 用戶按下觸摸屏，并拖動，由1個MotionEvent ACTION_DOWN, 多個ACTION_MOVE觸發(fā)   */  public boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX,   float distanceY)  {   Logger.i("MyGesture", "onScroll");    //禁止彈性滾動   if (mOverScrollMode == false)   {   float x1 = e1.getX();   float x2 = e2.getX();   if(mWhichScreen == 0 && x1 < x2)    return false;   else if(mWhichScreen == PAGE_COUNT - 1 && x1 > x2)    return false;   }   //  int distance = Math.abs(getScrollX() - mWhichScreen * mScreenWidth); //  if ((mWhichScreen ==0 || mWhichScreen == PAGE_COUNT -1) && distance > mOverScrollDistance) //  return false;     this.scrollBy((int)distanceX, 0);    return true;  }   /**   * 用戶長按觸摸屏，由多個MotionEvent ACTION_DOWN觸發(fā)   */  public void onLongPress(MotionEvent e)  {   Logger.i("MyGesture", "onLongPress");  }   @Override  public boolean onTouchEvent(MotionEvent event)  {   if(event.getAction() == MotionEvent.ACTION_DOWN)   {   mTimerResume = false;   if ( !mScroller.isFinished() )    mScroller.abortAnimation();   }   else if(event.getAction() == MotionEvent.ACTION_UP)   {   //開始自動滑屏   mTimerResume = true;   mByUserAction = true;   }    boolean consume = mGestureDetector.onTouchEvent(event);    if (consume == false && event.getAction() == MotionEvent.ACTION_UP)   {   int curScrollX = HorizontalScrollViewEx.this.getScrollX();   int mWhichScreen = (curScrollX + mScreenWidth / 2) /mScreenWidth;    switchView(mWhichScreen);   }    return consume;  }   @Override  public void computeScroll()  {   if (mScroller.computeScrollOffset())   {   scrollTo(mScroller.getCurrX(), mScroller.getCurrY());   postInvalidate();   }  }   @Override  protected void onLayout(boolean changed, int l, int t, int r, int b)  {   if (changed)   {   int childLeft = 0;   final int childCount = getChildCount();    for (int i=0; i<childCount; i++)   {    final View childView = getChildAt(i);    if (childView.getVisibility() != View.GONE)    {    final int childWidth = childView.getMeasuredWidth();    childView.layout(childLeft, 0,     childLeft+childWidth, childView.getMeasuredHeight());    childLeft += childWidth;    }   }   }  }   @Override  protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec)  {   super.onMeasure(widthMeasureSpec, heightMeasureSpec);    final int width = MeasureSpec.getSize(widthMeasureSpec);   final int count = getChildCount();     for (int i = 0; i < count; i++)   {   getChildAt(i).measure(widthMeasureSpec, heightMeasureSpec);   }   scrollTo(mWhich * mScreenWidth, 0);  }   }   /**  * override此函數(shù)，防止其修改構(gòu)造方法所定義的寬和高<br/>  * 注意：在這里，設(shè)置寬和高將不起作用  */  @Override  public void setLayoutParams(android.view.ViewGroup.LayoutParams params)  {  params.width = mScreenWidth;  params.height = mScreenHeight;   super.setLayoutParams(params);  }   //標志view AttachedToWindow  @Override  protected void onAttachedToWindow()  {  super.onAttachedToWindow();  mTimerResume = true;  }   //標志view已經(jīng)脫離window，典型的情形是view被銷毀了，此時取消timer  @Override  protected void onDetachedFromWindow()  {  super.onDetachedFromWindow();  Logger.d(TAG, "onDetachedFromWindow");    mTimerResume = false;  int activityId = ( (BaseActivity)mContext ).activityId();  //如果是賬號管理頁面 則釋放內(nèi)存  if(activityId == BaseActivity.ACCOUNT_ID)  {   destroy();  }  }   /**  * 銷毀banner  */  public void destroy()  {  mTimerTask.cancel();  timer.cancel();  //去除各種bitmap對activity的引用關(guān)系  destoryBitmaps();  System.gc();  }   /**  * 去除各種bitmap對activity的引用關(guān)系  */  private void destoryBitmaps()  {   for (View view : mLinearLayoutScreens)  {   Drawable drawable = view.getBackground();   BitmapDrawable bitmapDrawable = null;   if(drawable instanceof BitmapDrawable)   bitmapDrawable = (BitmapDrawable)drawable;     if(bitmapDrawable != null)   {   //解除drawable對view的引用   bitmapDrawable.setCallback(null);   bitmapDrawable = null;   }  }    for (ImageView imageView : mImageViewList)  {   Drawable drawable = imageView.getDrawable();   if(drawable != null)   {   drawable.setCallback(null);   drawable = null;   }  }    mPageIndicator.setCallback(null);  mPageIndicator = null;  mPageIndicatorFocused.setCallback(null);  mPageIndicatorFocused = null;    mLinearLayoutScreens.clear();  mLinearLayoutScreens = null;    mBannerBitmaps.clear();  mBannerBitmaps = null;    mImageViewList.clear();  mImageViewList = null;    mBannerItemsList.clear();  mBannerItemsList = null;  }   //單擊事件  @Override  public void onBannerClick( BannerMotionEvent bannerMotionEvent )  {  final int position = bannerMotionEvent.index;  if(mContext == null)   return;    NotificationInfo notificationInfo = new NotificationInfo();  notificationInfo.msgType = bannerMotionEvent.getAction();  int action = bannerMotionEvent.getAction();  if(action == NotificationInfo.NOTIFICATION_SINGLEGAME_MSG) //單個游戲消息，直接啟動該游戲  {   try   {   notificationInfo.gameId = Integer.parseInt( bannerMotionEvent.getGameId() );   notificationInfo.gameType = Integer.parseInt( bannerMotionEvent.getGameType() );   }   catch (NumberFormatException e)   {   Logger.e(TAG, e.toString());   return;   }  }  else if(action == NotificationInfo.NOTIFICATION_GAMEPAGE_MSG) //游戲主頁消息，通過客戶端展示游戲主頁  {   try   {   notificationInfo.gameId = Integer.parseInt( bannerMotionEvent.getGameId() );   }   catch (NumberFormatException e)   {   Logger.e(TAG, e.toString());   return;   }   notificationInfo.issueTitle = bannerMotionEvent.getTitle();  }  else if(action == NotificationInfo.NOTIFICATION_SHOW_WEBVIEW_MSG) //交叉推廣消息，通過一個webview展示  {   notificationInfo.issueTitle = bannerMotionEvent.getTitle();   notificationInfo.openUrl = bannerMotionEvent.getResponseUrl();  }  else //reserved  {   return;  }    Intent intent = notificationInfo.generateIntent(mContext);  if(intent != null)   mContext.startActivity(intent);  }   /**  * ScrollBanner所關(guān)聯(lián)的banner項 可以為多個 一個為一屏  */  public static class BannerItem extends Object  {  public static final String ACTION = "action";  public static final String URL = "url";  public static final String IMGURL = "imgurl";  public static final String GAMEID = "gameid";  public static final String GAMETYPE = "gametype";  public static final String TITLE = "title";   public int index = -1;  public int action = -1;  public String url = "";  public String imgUrl = "";  public String gameId = "";  public String gameType = "";  public String title = "";   public BannerItem(){}  }   /**  * BannerMotionEvent：單擊banner所產(chǎn)生的事件對象<br/>  *getAction()來獲取動作類別<br/>  *getResponseUrl()來獲取響應(yīng)url<br/>  *...  */  public static class BannerMotionEvent extends Object  {  /**   * ACTION_PLAY_FLASH： 播放游戲   */  public static final int ACTION_PLAY = 2;  /**   * ACTION_HOMEPAGE：打開官網(wǎng)   */  public static final int ACTION_HOMEPAGE = 3;  /**   * ACTION_OPEN_URL：打開指定url   */  public static final int ACTION_OPEN_URL = 4;   //banner中屏幕的index  private int index = -1;  //響應(yīng)url  private String responseUrl = "";  //動作種類  private int action = -1;  //gameid  private String gameId = "";  //gametype flash游戲(0) or h5游戲(1)  private String gameType = "";  //webview的標題  private String title = "";    public BannerMotionEvent(int index, int action, String responseUrl,   String gameId, String gameType, String title)  {   BannerMotionEvent.this.index = index;   BannerMotionEvent.this.action = action;   BannerMotionEvent.this.responseUrl = responseUrl;   BannerMotionEvent.this.gameId = gameId;   BannerMotionEvent.this.gameType = gameType;   BannerMotionEvent.this.title = title;  }   /**   * 獲取當前BannerMotionEvent事件對象的動作種類   * @return 動作種類：ACTION_PLAY等   */  public int getAction()  {   return action;  }   /**   * 獲取當前BannerMotionEvent事件對象的title   * @return title webview的標題   */  public String getTitle()  {   return title;  }    /**   * 獲取當前BannerMotionEvent事件對象的gameId   * @return gameId   */  public String getGameId()  {   return gameId;  }    /**   * 獲取當前BannerMotionEvent事件對象的gameType   * @return gameType 0 or 1   */  public String getGameType()  {   return gameType;  }    /**   * 獲取當前BannerMotionEvent事件對象的響應(yīng)url   * @return 響應(yīng)url   */  public String getResponseUrl()  {   return responseUrl;  }   @SuppressLint("DefaultLocale")  @Override  public String toString()  {   return String.format("BannerMotionEvent { index=%d, action=%d, responseUrl=%s, gameId=%s, gameType=%s, title=%s }",    index, action, responseUrl, gameId, gameType, title);  }  }   @Override  public void onBannerInfoSuccess(List<BannerItem> items)  {  Logger.d(TAG, "onBannerInfoSuccess");  mBannerItemsList = items;  mHandler.sendEmptyMessage(MESSAGE_FETCH_BANNER_SUCCESS);  }   @Override  public void onBannerInfoFailed()  {  Logger.e(TAG, "onBannerInfoFailed");  }  } 

public interface ComponentCallBack {   public static interface OnBannerClickListener  {  /**   * banner單擊事件   * @param bannerMotionEvent 單擊事件對象，包含所需的響應(yīng)信息   * 參見 {@link BannerMotionEvent}   */  public abstract void onBannerClick( BannerMotionEvent bannerMotionEvent );  }  }