Code example for ViewAnimator

		case fromRight:
			viewSwiter.setInAnimation(animSlideInRight);
			viewSwiter.setOutAnimation(animSlideOutRight);
			break; 
		case fromCenter:
			viewSwiter.setAnimation(scaleAnimation);
			break; 
		case fromAlpha:
			viewSwiter.setAnimation(alphaAnimation);
			break; 
		case none:
			viewSwiter.setInAnimation(null);
			viewSwiter.setOutAnimation(null);
			break; 
		default: 
			break; 
		} 
	} 
 
	/** 
	 * 不在动画中,用于判断是否相应click 
	 *  
	 * @author haitian 
	 */ 
	public boolean notAnimition() { 
		return isClickEnabled;
	} 
 
	/** 
	 * 初始化之后,将初始化完毕的MainDC呈现,作为最底层的DC,重复back()方法N次后显示此DC,quit()方法直接返回到此DC, 
	 * 要在acitvity中的setContentView()方法前设置 
	 *  
	 * @author haitian 
	 */ 
	public void setMainDC(BaseDC mainDC) {
		viewSwiter.removeAllViews();
		viewSwiter.addView(mainDC, new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT));
		// viewSwiter.setAnimation(alphaAnimation); 
		viewSwiter.setInAnimation(animSlideInLeft);
		viewSwiter.setOutAnimation(animSlideOutLeft);
		viewSwiter.setDisplayedChild(0);
		mainDC.onShow();
	} 
 
	public void setAnimaMainDC(BaseDC mainDC) {
		viewSwiter.removeAllViews();
		viewSwiter.addView(mainDC, new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT));
		// viewSwiter.setAnimation(alphaAnimation); 
		viewSwiter.setInAnimation(animSlideInRight);
		viewSwiter.setOutAnimation(animSlideOutRight);
		viewSwiter.setDisplayedChild(0);
		mainDC.onShow();
	} 
 
	public void setInitDC(BaseDC initDC) {
		viewSwiter.removeAllViews();
		viewSwiter.addView(initDC, new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT));
		viewSwiter.setAnimation(scaleAnimation);
		viewSwiter.setDisplayedChild(0);
		initDC.onShow();
	} 
 
	/** 
	 * 用于设置到activity中 
	 *  
	 * @author haitian 
	 */ 
	public ViewAnimator getContentView() {
		if (viewSwiter.getCurrentView() instanceof BaseDC) {
			((BaseDC) viewSwiter.getCurrentView()).checkOrientation();
		} 
		return viewSwiter;
	} 
 
	/** 
	 * 判断正在显示的dc是否是某dc 
	 *  
	 * @author haitian 
	 */ 
	public boolean isShowDC(BaseDC dc) {
		if (viewSwiter.getCurrentView() == dc) {
			return true; 
		} else { 
			return false; 
		} 
	} 
 
	public BaseDC getNowDC() { 
		if (viewSwiter.getCurrentView() instanceof BaseDC) {
			return (BaseDC) viewSwiter.getCurrentView();
		} else { 
			return null; 
		} 
	} 
 
	public void makeScaleAnimation() { 
		if (ScreenWidth == 320 && ScreenHeight == 600) {
			scaleAnimation = new ScaleAnimation(0.1f, 1.3f, 0.1f, 1.1f, Animation.RELATIVE_TO_SELF, 0.5f,
					Animation.RELATIVE_TO_SELF, 0.5f);
		} else if (ScreenWidth == 320 && ScreenHeight == 800) {
			scaleAnimation = new ScaleAnimation(0.1f, 1.0f, 0.1f, 1.0f, Animation.RELATIVE_TO_SELF, 0.5f,
					Animation.RELATIVE_TO_SELF, 0.5f);
		} else if (ScreenWidth == 320 && ScreenHeight == 480) {
			scaleAnimation = new ScaleAnimation(0.1f, 1.0f, 0.1f, 1.0f, Animation.RELATIVE_TO_SELF, 0.5f,
					Animation.RELATIVE_TO_SELF, 0.5f);
		} else if (ScreenWidth == 320 && ScreenHeight == 854) {
			scaleAnimation = new ScaleAnimation(0.1f, 1.2f, 0.1f, 1.1f, Animation.RELATIVE_TO_SELF, 0.5f,
					Animation.RELATIVE_TO_SELF, 0.5f);
		} else {// 未知屏幕则按默认 
			scaleAnimation = new ScaleAnimation(0.1f, 1.0f, 0.1f, 1.0f, Animation.RELATIVE_TO_SELF, 0.5f,
					Animation.RELATIVE_TO_SELF, 0.5f);
		} 
		scaleAnimation.setFillAfter(true);
	} 
 
	private void setClickEnabled(boolean isCleckEnabled) {
		if (isCleckEnabled) {
			viewSwiter.postDelayed(new Runnable() {
				@Override 
				public void run() { 
					isClickEnabled = true;
				} 
			}, 200); 
			// isClickEnabled=true; 
			// viewSwiter.setClickable(true); 
		} else { 
			isClickEnabled = false;
			// viewSwiter.setClickable(false); 
		} 
	} 
 
	public boolean back() { 
		LogInfo.LogOut("haitian", "viewSwiter.getChildCount() = " + viewSwiter.getChildCount());
		if (viewSwiter.getChildCount() > 1) {
			final BaseDC toShow = (BaseDC) viewSwiter.getChildAt(viewSwiter.getChildCount() - 2);
			viewSwiter.setInAnimation(animSlideInRight);
			viewSwiter.setOutAnimation(animSlideOutRight);
			viewSwiter.setDisplayedChild(viewSwiter.getChildCount() - 2);
			viewSwiter.removeViewAt(viewSwiter.getChildCount() - 1);
			toShow.onShow();
			return true; 
		} else { 
			return false; 
		} 
	} 
 
	public void showDC(BaseDC dc, int type, BaseManager from, BaseManager to) {
		if (type == 0) {
			setStyle(AnimationStyle.none);
		} else if (type == 1) {// from left to right
			setStyle(AnimationStyle.fromLeft);
		} else if (type == 2) {
			setStyle(AnimationStyle.fromRight);
		} 
		if (dc.getParent() != null) {
			if (dc.getParent() instanceof ViewGroup) {
				((ViewGroup) (dc.getParent())).removeView(dc);
			} else { 
				return; 
			} 
		} 
		dc.invalidate();
		viewSwiter.addView(dc, new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT));
		viewSwiter.setDisplayedChild(viewSwiter.getChildCount() - 1);
		// viewSwiter.setDisplayedChild(1); 
		// viewSwiter.removeViewAt(0); 
		dc.onShow();
		fromManager = from;
		toManager = to;