文件夹打开全屏透明加上背景

src/com/android/uiuios/folder/Folder.java

@@ -24,15 +24,24 @@ import android.animation.Animator;
 import android.animation.AnimatorListenerAdapter;
 import android.animation.AnimatorSet;
 import android.annotation.SuppressLint;
+import android.app.WallpaperManager;
 import android.appwidget.AppWidgetHostView;
 import android.content.Context;
 import android.content.res.Resources;
+import android.graphics.Bitmap;
 import android.graphics.Canvas;
 import android.graphics.Path;
 import android.graphics.Rect;
+import android.graphics.drawable.BitmapDrawable;
+import android.graphics.drawable.Drawable;
+import android.renderscript.Allocation;
+import android.renderscript.Element;
+import android.renderscript.RenderScript;
+import android.renderscript.ScriptIntrinsicBlur;
 import android.text.InputType;
 import android.text.Selection;
 import android.util.AttributeSet;
+import android.util.DisplayMetrics;
 import android.util.Log;
 import android.util.Pair;
 import android.view.FocusFinder;
@@ -40,6 +49,7 @@ import android.view.KeyEvent;
 import android.view.MotionEvent;
 import android.view.View;
 import android.view.ViewDebug;
+import android.view.WindowManager;
 import android.view.accessibility.AccessibilityEvent;
 import android.view.animation.AnimationUtils;
 import android.view.inputmethod.EditorInfo;
@@ -471,6 +481,56 @@ public class Folder extends AbstractFloatingView implements ClipPathView, DragSo
         }
         return folderCount >= MIN_FOLDERS_FOR_HARDWARE_OPTIMIZATION;
     }
+    public Bitmap blur(Bitmap image) {
+        int width = Math.round(image.getWidth() * 0.4f);
+        int height = Math.round(image.getHeight() * 0.4f);
+        Bitmap inputBitmap = Bitmap.createScaledBitmap(image, width, height, false);
+        Bitmap outputBitmap = Bitmap.createBitmap(inputBitmap);
+        RenderScript rs = RenderScript.create(getContext());
+        ScriptIntrinsicBlur blurScript = ScriptIntrinsicBlur.create(rs, Element.U8_4(rs));
+        Allocation tmpIn = Allocation.createFromBitmap(rs, inputBitmap);
+        Allocation tmpOut = Allocation.createFromBitmap(rs, outputBitmap);
+        blurScript.setRadius(25f);
+        blurScript.setInput(tmpIn);
+        blurScript.forEach(tmpOut);
+        tmpOut.copyTo(outputBitmap);
+        return outputBitmap;
+    }
+
+    public Bitmap getWallpaperBg() {
+        WallpaperManager wallpaperManager = WallpaperManager.getInstance(getContext());
+        Drawable wallpaperDrawable = wallpaperManager.getDrawable();
+        Bitmap bm = ((BitmapDrawable) wallpaperDrawable).getBitmap();
+        Bitmap bitmap = cropImage(bm);
+        return bitmap;
+    }
+
+    private Bitmap cropImage(Bitmap oldBitmap){
+        WindowManager wm = (WindowManager) getContext().getSystemService(Context.WINDOW_SERVICE);
+        DisplayMetrics dm = new DisplayMetrics();
+        wm.getDefaultDisplay().getRealMetrics(dm);
+        int width = dm.widthPixels;         // 屏幕宽度（像素）1200
+        int height = dm.heightPixels;       // 屏幕高度（像素）1920
+        int picWidth = oldBitmap.getWidth();
+        int picHeight = oldBitmap.getHeight();
+        float wScala = (float) height/width;
+        float bScala = (float) picHeight/picWidth;
+        int newPicWidth;
+        int newpicHeight;
+        Bitmap bitmap = null;
+        if (wScala>bScala){
+            newPicWidth = (int) (picWidth / wScala);
+            newpicHeight = picHeight;
+            bitmap =Bitmap.createBitmap(oldBitmap,(newPicWidth - width)/2 ,0 , newPicWidth , newpicHeight);
+        }else {
+            newPicWidth = picWidth;
+            newpicHeight =(int) (picHeight * wScala);
+            bitmap =Bitmap.createBitmap(oldBitmap,0,(picHeight - newpicHeight) / 2 , newPicWidth , newpicHeight);
+        }
+        return bitmap;
+    }
+
+
 
     /**
      * Opens the user folder described by the specified tag. The opening of the folder
@@ -478,6 +538,7 @@ public class Folder extends AbstractFloatingView implements ClipPathView, DragSo
      * is played.
      */
     public void animateOpen() {
+        Bitmap bm = blur(getWallpaperBg());
         Folder openFolder = getOpen(mLauncher);
         if (openFolder != null && openFolder != this) {
             // Close any open folder before opening a folder.
@@ -487,6 +548,7 @@ public class Folder extends AbstractFloatingView implements ClipPathView, DragSo
         mIsOpen = true;
 
         DragLayer dragLayer = mLauncher.getDragLayer();
+        dragLayer.setBackground(new BitmapDrawable(bm));
         // Just verify that the folder hasn't already been added to the DragLayer.
         // There was a one-off crash where the folder had a parent already.
         if (getParent() == null) {
@@ -572,6 +634,11 @@ public class Folder extends AbstractFloatingView implements ClipPathView, DragSo
         }
 
         mContent.verifyVisibleHighResIcons(mContent.getNextPage());
+        /* 隐藏workspace和HotSeat begin */
+        mLauncher.getWorkspace().setVisibility(View.GONE);
+        mLauncher.getHotseat().setVisibility(View.GONE);
+        mLauncher.getIndicatorDots().setVisibility(View.GONE);
+        /* 隐藏workspace和HotSeat 0000009 end */
     }
 
     public void beginExternalDrag() {
@@ -616,6 +683,9 @@ public class Folder extends AbstractFloatingView implements ClipPathView, DragSo
         // longer occludes the workspace items
         mLauncher.getDragLayer().sendAccessibilityEvent(
                 AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED);
+        mLauncher.getWorkspace().setVisibility(View.VISIBLE);
+        mLauncher.getHotseat().setVisibility(View.VISIBLE);
+        mLauncher.getIndicatorDots().setVisibility(View.VISIBLE);
     }
 
     private void animateClosed() {
@@ -641,6 +711,7 @@ public class Folder extends AbstractFloatingView implements ClipPathView, DragSo
         DragLayer parent = (DragLayer) getParent();
         if (parent != null) {
             parent.removeView(this);
+            parent.setBackground(null);
         }
         mDragController.removeDropTarget(this);
         clearFocus();
@@ -955,8 +1026,10 @@ public class Folder extends AbstractFloatingView implements ClipPathView, DragSo
 
         lp.width = width;
         lp.height = height;
-        lp.x = left;
-        lp.y = top;
+//        lp.x = left;
+//        lp.y = top;
+        lp.x = (grid.availableWidthPx - getFolderWidth()) / 2;
+        lp.y = (grid.availableHeightPx - getFolderHeight()) / 2;
     }
 
     public float getPivotXForIconAnimation() {

src/com/android/uiuios/folder/FolderAnimationManager.java

@@ -85,7 +85,7 @@ public class FolderAnimationManager {
         mFolder = folder;
         mContent = folder.mContent;
         mFolderBackground = (GradientDrawable) mFolder.getBackground();
-
+        mFolderBackground.setAlpha(64);
         mFolderIcon = folder.mFolderIcon;
         mPreviewBackground = mFolderIcon.mBackground;