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Android 实现iphone主屏幕文件夹展开合并效果(OpenFolder)

 


[java] 
public class OpenFolder { 
 
    public static String TAG = "OpenFolder"; 
    /**
     * folder animaltion execution time
     */ 
    private static int ANIMALTION_TIME = 300; 
 
    private Context mContext; 
    private WindowManager mWindowManager; 
    private int mWindowLayoutType = WindowManager.LayoutParams.TYPE_APPLICATION_PANEL; 
 
    private OpenFolderContainer container; 
    private View mBackgroundView; 
    private View mFolderView; 
    private ImageView mTopView; 
    private ImageView mBottomView; 
 
    private int mUp_down; 
    private int[] mAnchorLocation = new int[2]; 
    private int mSrceenwidth; 
    private int mSrceenheigh; 
    private int mFolderheigh; 
 
    private int offsety; 
    private int offsetyLast; 
    private boolean mIsOpened = false; 
 
    /**
     * Listener that is called when this OpenFolder window is closed.
     */ 
    public inte易做图ce OnFolderClosedListener { 
        /**
         * Called when this OpenFolder window is closed.
         */ 
        public void onClosed(); 
    } 
 
    private OnFolderClosedListener mOnFolderClosedListener; 
 
    /**
     * the folder open Animation Listener
     */ 
    private Animation.AnimationListener mOpenAnimationListener = new Animation.AnimationListener() { 
 
        @Override 
        public void onAnimationStart(Animation animation) { 
        } 
 
        @Override 
        public void onAnimationRepeat(Animation animation) { 
        } 
 
        @Override 
        public void onAnimationEnd(Animation animation) { 
            mIsOpened = true; 
        } 
    }; 
 
    /**
     * the folder colse Animation Listener
     */ 
    private Animation.AnimationListener mClosedAnimationListener = new Animation.AnimationListener() { 
 
        @Override 
        public void onAnimationStart(Animation animation) { 
        } 
 
        @Override 
        public void onAnimationRepeat(Animation animation) { 
        } 
 
        @Override 
        public void onAnimationEnd(Animation animation) { 
            mWindowManager.removeView(container); 
            // 清空画图缓存区,否则获取的还是原来的图像 
            mBackgroundView.setDrawingCacheEnabled(false); 
            mIsOpened = false; 
            if (mOnFolderClosedListener != null) { 
                mOnFolderClosedListener.onClosed(); 
            } 
        } 
    }; 
 
    private static OpenFolder openFolder; 
 
    /**
     * @param context
     * @return
     */ 
    public static OpenFolder getInstance(Context context) { 
        if (openFolder == null) { 
            openFolder = new OpenFolder(context); 
        } 
        return openFolder; 
    } 
 
    private OpenFolder(Context context) { 
 
        mContext = context; 
        mWindowManager = (WindowManager) context 
                .getSystemService(Context.WINDOW_SERVICE); 
        container = new OpenFolderContainer(mContext); 
    } 
 
    /**
     * 
     * @param anchor
     *            folder展开参照容器
     * @param backgroundView
     *            当前用于显示folder的页面
     * @param folderView
     *            folder页面
     * @param folderH
     *            folder页面高度,dip
     * @param up_down
     *            0 为向上展开,否则向下展开
     */ 
    public void openFolderView(View anchor, View backgroundView, 
            View folderView, int folderH, int up_down) { 
        mUp_down = up_down; 
        container.removeAllViews(); 
        mBackgroundView = backgroundView; 
        mFolderheigh = dip2px(mContext, folderH); 
        mFolderView = folderView; 
    

补充:移动开发 , Android ,
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