我是在对一个UITableView 一起进行 reloadRows和reloadSections 的操作的时候 出现的…

错误信息:attempt to create saveOrUpdate event with null entity; 这个错误网上答案比较多,我也不多说了. 我遇到的问题是在前台传过来的参数是null对象,后台hibernate又去保存这个对象,就出现这个错误,添加个判断就好.…

To create my first app in iOS create the project. In the welcome window, click “Create a new Xcode project” (or choose File > New > Project). Xcode opens a new window and displays a dialog in which you choose a template. In the iOS section at the le…

异常java.lang.IllegalArgumentException:attempt to create delete event with null entity解决:路径问题,前台jsp和java的control层接收不一致,还有可能service调错了…

今天想把ssh整合的代码跑起来,控制台就一直在报错,搞了半天!!! Hibernate: select computer0_.computerId as computer1_0_, computer0_.computerName as computer2_0_, computer0_.computerPrice as computer3_0_, computer0_.computerType as computer4_0_ from computer computer0_java.lang.Il…

We cover CSS keyframes and how to create them using TypeStyle. We then show how to use the keyframes function to create an animation. We also discuss a few other CSS properties in the animation namespace. import {style, keyframes, classes} from 'type…

解决办法:删除之前判断是否为空 if(Object != null){ session.delete(Object); }…

  Animations Animations provide fluid visual transitions between different states of your user interface. In iOS, animations are used extensively to reposition views, change their size, remove them from view hierarchies, and hide them. You might use…

在这里总结一些iOS开发中的小技巧,能大大方便我们的开发,持续更新. UITableView的Group样式下顶部空白处理 //分组列表头部空白处理 UIView *view = [[UIViewalloc] initWithFrame:CGRectMake(0, 0, 0, 0.1)]; self.tableView.tableHeaderView = view; UITableView的plain样式下,取消区头停滞效果 - (void)scrollViewDidScroll:(UIScro…

原文链接 在这里总结一些iOS开发中的小技巧,能大大方便我们的开发,持续更新. UITableView的Group样式下顶部空白处理 //分组列表头部空白处理 UIView *view = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 0, 0.1)]; self.tableView.tableHeaderView = view; UITableView的plain样式下,取消区头停滞效果 - (void)scrollViewDidScroll:(…