Fixing weird deferred click events after deleting folder

-> Fixing issue 5055487

Change-Id: I932f95f29322fa50035b13063ab51fad2d2217e8

src/com/android/launcher2/DragController.java

@@ -31,6 +31,7 @@ import android.view.ViewConfiguration;
 import android.view.inputmethod.InputMethodManager;
 
 import com.android.launcher.R;
+import com.android.launcher2.DropTarget.DragObject;
 
 import java.util.ArrayList;
 
@@ -81,7 +82,7 @@ public class DragController {
      */
     private int mScrollZone;
 
-    private DropTarget.DragObject mDragObject = new DropTarget.DragObject();
+    private DropTarget.DragObject mDragObject;
 
     /** Who can receive drop events */
     private ArrayList<DropTarget> mDropTargets = new ArrayList<DropTarget>();
@@ -275,6 +276,8 @@ public class DragController {
 
         mDragging = true;
 
+        mDragObject = new DropTarget.DragObject();
+
         mDragObject.dragComplete = false;
         mDragObject.xOffset = mMotionDownX - (dragLayerX + dragRegionLeft);
         mDragObject.yOffset = mMotionDownY - (dragLayerY + dragRegionTop);

src/com/android/launcher2/Launcher.java

@@ -1533,8 +1533,15 @@ public final class Launcher extends Activity
      * @param v The view representing the clicked shortcut.
      */
     public void onClick(View v) {
-        // Make sure that rogue clicks don't get through while allapps is launching
-        if (mWorkspace.isSwitchingState()) return;
+        // Make sure that rogue clicks don't get through while allapps is launching, or after the
+        // view has detached (it's possible for this to happen if the view is removed mid touch).
+        if (v.getWindowToken() == null) {
+            return;
+        }
+
+        if (mWorkspace.isSwitchingState()) {
+            return;
+        }
 
         Object tag = v.getTag();
         if (tag instanceof ShortcutInfo) {
@@ -1692,6 +1699,7 @@ public final class Launcher extends Activity
     }
 
     private void growAndFadeOutFolderIcon(FolderIcon fi) {
+        if (fi == null) return;
         PropertyValuesHolder alpha = PropertyValuesHolder.ofFloat("alpha", 0);
         PropertyValuesHolder scaleX = PropertyValuesHolder.ofFloat("scaleX", 1.5f);
         PropertyValuesHolder scaleY = PropertyValuesHolder.ofFloat("scaleY", 1.5f);
@@ -1708,6 +1716,7 @@ public final class Launcher extends Activity
     }
 
     private void shrinkAndFadeInFolderIcon(FolderIcon fi) {
+        if (fi == null) return;
         PropertyValuesHolder alpha = PropertyValuesHolder.ofFloat("alpha", 1.0f);
         PropertyValuesHolder scaleX = PropertyValuesHolder.ofFloat("scaleX", 1.0f);
         PropertyValuesHolder scaleY = PropertyValuesHolder.ofFloat("scaleY", 1.0f);

src/com/android/launcher2/LauncherModel.java

@@ -506,7 +506,7 @@ public class LauncherModel extends BroadcastReceiver {
                     sFolders.remove(info.id);
                     sWorkspaceItems.remove(info);
 
-                    cr.delete(LauncherSettings.Favorites.CONTENT_URI,
+                    cr.delete(LauncherSettings.Favorites.CONTENT_URI_NO_NOTIFICATION,
                             LauncherSettings.Favorites.CONTAINER + "=" + info.id, null);
                     for (ItemInfo childInfo : info.contents) {
                         sItemsIdMap.remove(childInfo.id);