如何在小部件列表中隐藏某个widget或者shortcut

小部件列表包括两种类型：widget和shortcut。如何在小部件列表中隐藏某个widget或者shortcut？例如隐藏设置的电量控制小部件(Power Control)？

路径 packages\apps\Launcher3\src\com\android\launcher3\AppsCustomizePagedView.java

<pre name="code" class="html"><span style="font-size:14px;">public void onPackagesUpdated(ArrayList<Object> widgetsAndShortcuts) {        LauncherAppState app = LauncherAppState.getInstance();        DeviceProfile grid = app.getDynamicGrid().getDeviceProfile();        // Get the list of widgets and shortcuts        mWidgets.clear();        if (LauncherLog.DEBUG) {            LauncherLog.d(TAG, "updatePackages: widgetsAndShortcuts size = " + widgetsAndShortcuts.size());        }        for (Object o : widgetsAndShortcuts) {            if (o instanceof AppWidgetProviderInfo) {                AppWidgetProviderInfo widget = (AppWidgetProviderInfo) o;                if (!app.shouldShowAppOrWidgetProvider(widget.provider)) {                    continue;                }                widget.label = widget.label.trim();                if (widget.minWidth > 0 && widget.minHeight > 0) {                    // Ensure that all widgets we show can be added on a workspace of this size                    int[] spanXY = Launcher.getSpanForWidget(mLauncher, widget);                    int[] minSpanXY = Launcher.getMinSpanForWidget(mLauncher, widget);                    int minSpanX = Math.min(spanXY[0], minSpanXY[0]);                    int minSpanY = Math.min(spanXY[1], minSpanXY[1]);                    if (minSpanX <= (int) grid.numColumns &&                        minSpanY <= (int) grid.numRows) {<span style="color:#ff0000;">//hide widgets xxx20151230if(!widget.provider.getPackageName().equals("com.mediatek.videofavorites")){//add xxx                        mWidgets.add(widget);}//add xxx</span>                    } else {                        Log.e(TAG, "Widget " + widget.provider + " can not fit on this device (" +                              widget.minWidth + ", " + widget.minHeight + "), min span is (" + minSpanX + ", " + minSpanY + ")"                              + "), span is (" + spanXY[0] + ", " + spanXY[1] + ")");                    }                } else {                    LauncherLog.e(TAG, "Widget " + widget.provider + " has invalid dimensions (" +                                  widget.minWidth + ", " + widget.minHeight);                }            } else {                   <span style="color:#ff0000;"> //Hide shortcut modify here        ResolveInfo info=(ResolveInfo)o;//add xxx      if(!info.activityInfo.packageName.equals("com.example.appwidget")){//xxx add        // just add shortcuts                mWidgets.add(o);       }//xxx add</span>                           }        }        updatePageCountsAndInvalidateData();    }</span>