Launcher4 中widget的选择

Tabhost中选择widget还是app的调用顺序：

AppsCustomizeTabHost:selectAppsTab->AppsCustomizePagedView:setContentType->PagedView:invalidatePageData-

>loadAssociatedPages->syncPageItems

主要是根据page的大小来判断，当前显示的是widget还是apps

//根据page做出判断，是选择widget还是apps    @Override    public void syncPageItems(int page, boolean immediate) {        if (page < mNumAppsPages) {            syncAppsPageItems(page, immediate);        } else {            syncWidgetPageItems(page - mNumAppsPages, immediate);        }    }

    //初始化widgetS
    AppsCustomizePagedView:updatePackages()