Most of the time, your components respond to events that occur within the component tree by defining their own handler or by accepting a handler defined by a parent component via props. Sometimes, this isn't enough. In this lesson, we'll rely on life
这一讲开始我们来讲一下Android中菜单的使用方法,菜单是应用中的普通的组件,主要是提供友好和专注的用户体验,你可以在你的Activity中使用 Menu APIs 来提供用户动作和其他选项的操作. 从Android 3.0 开始,Android 设备就不再提供一个专用的菜单按钮,而是依赖与独立的 6个选项的菜单面板,而且提供了 Action Bar来显示用户的行为.所以在高版本中,菜单的应用将会比较小了. 1. 三种菜单显示的方式 1). Options menu and ac
Simple menu system that grabs a list of actions from a single controller and creates an unordered list of links. To accomplish this I’ve created an attribute that will be applied to the action methods we want to see in the menu publicclassMenuItemAtt