Before we work on CRUD operation (Create, Read, Update, Delete), it's important to understand the entity lifecycle and how it is being managed by the EntityFramework. During an entity's lifetime, each entity has an entity state based on the operation…
service的生命周期,从它被创建开始,到它被销毁为止,可以有两条不同的路径: A started service 被开启的service通过其他组件调用 startService()被创建. 这种service可以无限地运行下去,必须调用stopSelf()方法或者其他组件调用stopService()方法来停止它. 当service被停止时,系统会销毁它. A bound service 被绑定的service是当其他组件(一个客户)调用bindService()来创建的. 客户可以通过一…
Activity Lifecycle Activities in the system are managed as an activity stack(activity栈?). When a new activity is started, it is placed on the top of the stack and becomes the running activity(当一个activity启动时,它覆盖在栈的顶部,成为正在运行的activity) -- the previous a…
E4AP provides two levels of lifecycles, for contributions and for the application. Contents [hide] 1 Component Lifecycle 1.1 Initialization 1.2 Disposal 2 Application Lifecycle 2.1 The Lifecycle Manager 2.2 Model Processors 2.3 Model Addons Componen…
By default the life-cycle of root resource classes is per-request, namely that a new instance of a root resource class is created every time the request URI path matches the root resource. This makes for a very natural programming model where constru…
The React component lifecycle will allow you to update your components at runtime. This lesson will explore how to do that. import React from 'react'; import ReactDOM from 'react-dom'; export default class App extends React.Component { constructor(){…
The previous lesson introduced the React component lifecycle mounting and unmounting. In this lesson you will learn some simple uses for these hooks. import React from 'react'; import ReactDOM from 'react-dom'; class App extends React.Component { con…
React components have a lifecycle, and you are able to access specific phases of that lifecycle. This lesson will introduce mounting and unmounting of your React components. import React from 'react'; import ReactDOM from 'react-dom'; export default…
The React component lifecycle will allow you to update your components at runtime. This lesson will explore how to do that. Updating: componentWillReceiveProps componentWillReceiveProps(object nextProps) Invoked when a component is receiving new prop…
The previous lesson introduced the React component lifecycle mounting and unmounting. In this lesson you will learn some simple uses for these hooks. <!doctype html> <html lang="en"> <head> <meta charset="UTF-8">…
React components have a lifecycle, and you are able to access specific phases of that lifecycle. This lesson will introduce mounting and unmounting of your React components. Mounting: componentWillMount Invoked once, both on the client and server, im…
Before Robolectric 2.2, most tests created Activities by calling constructors directly, (new MyActivity()) and then manually calling lifecycle methods such as onCreate(). Also widely used were a set of methods in ShadowActivity (for instanceShadowAct…
