private void bindWorkspace() {

　　　　　　 //通知Launcher開始繫結資料
            mHandler.post(new Runnable() {
                public void run() {
                    Callbacks callbacks = tryGetCallbacks(oldCallbacks);
                    if (callbacks != null) {
                        //繫結資料到launcher,Launcher回撥，清空相關容器 OWL
 

                        callbacks.startBinding();
                    }
                }
            });
            //新增元素到workspace，主要是新增APP快捷方式
            N = workspaceItems.size();
            for (int i=0; i<N; i+=ITEMS_CHUNK) {
                final int start = i;
                final 
 
int chunkSize = (i+ITEMS_CHUNK <= N) ? ITEMS_CHUNK : (N-i);
                mHandler.post(new Runnable() {
                    public void run() {
                        Callbacks callbacks = tryGetCallbacks(oldCallbacks);
                        if (callbacks != null) {
                            callbacks.bindItems(workspaceItems, start, start
 
+chunkSize);
                        }
                    }
                });
            }
            //資料夾繫結
            final HashMap<Long, FolderInfo> folders = new HashMap<Long, FolderInfo>(sFolders);
            mHandler.post(new Runnable() {
                public void run() {
                    Callbacks callbacks = tryGetCallbacks(oldCallbacks);
                    if (callbacks != null) {
                        callbacks.bindFolders(folders);
                    }
                }
            });
            //分兩次載入widget ，當前介面和其他介面，增強使用者體驗OWL
　　　　     //其他頁面widget會在後臺執行緒再次載入
            final int currentScreen = oldCallbacks.getCurrentWorkspaceScreen();
            N = sAppWidgets.size();
            // once for the current screen
            for (int i=0; i<N; i++) {
                final LauncherAppWidgetInfo widget = sAppWidgets.get(i);
                if (widget.screen == currentScreen) {
                    mHandler.post(new Runnable() {
                        public void run() {
                            Callbacks callbacks = tryGetCallbacks(oldCallbacks);
                            if (callbacks != null) {
                                callbacks.bindAppWidget(widget);
                            }
                        }
                    });
                }
            }
            //載入其他看不見的螢幕widget
            for (int i=0; i<N; i++) {
                final LauncherAppWidgetInfo widget = sAppWidgets.get(i);
                if (widget.screen != currentScreen) {
                    mHandler.post(new Runnable() {
                        public void run() {
                            Callbacks callbacks = tryGetCallbacks(oldCallbacks);
                            if (callbacks != null) {
                                callbacks.bindAppWidget(widget);
                            }
                        }
                    });
                }
            }
            //載入完成，通知Launcher，已經完成資料載入
            mHandler.post(new Runnable() {
                public void run() {
                    Callbacks callbacks = tryGetCallbacks(oldCallbacks);
                    if (callbacks != null) {
                        callbacks.finishBindingItems();
                    }
                }
            });
        }