Overview
The life cycle of react components is the process of react components from creation to extinction. It is broadly divided into three phases:
1.Mounting component loading and initializing
2.Updating component Updates
3.Unmounting component Offload
legend
life cycle function and its usage
Constructor
First look at a diagram of the classic activity life cycleYou can see the process of the activity's life cycle, with a few specific processes:The Oncreate,onstart and Onresume methods are called successively at 1.Activity startup.2. When activity has a transparent layer of activity, it invokes the current activity's OnPause method and the new activity's Oncreate,
Describe the activity life cycle in detail in the following areas: 1. Go back to the main screen and then open and exit the program.2. When the screen rotates.3. Open other activity situations.4. Open a case of layou transparent activity.Source code:myapplication.7zLet's start with a life cycle map of activity. The tow
life cycle, and what does it do in the life cycle ?Onattach: When the method is called,Fragment is connected to its parent activity, and a reference to the parent activity is obtained . OnCreate: Call this method to initialize the fragment ; initialize fragmentOncreateview: Once Fragment has been created, call this met
The son said: "Wen so know new, can be teacher." In the theory of languageLearning technology is also the same, for technical documents or classic technical books, expect to see the full mastery of, it is not very likely, so we need to go back and read a few times carefully to understand the essence of the author's thoughts.Recently reviewed the life cycle of the activity, see the relevant books and officia
Initialization
1, Getdefaultprops ()
Set the default props, or you can set the default properties of the component with Dufaultprops.
2, Getinitialstate ()
There is no such hook function when using the class syntax of ES6, you can define this.state directly in the constructor. You can now access the This.props
3, Componentwillmount ()
Only called when the component is initialized, the component updates are not called at a later time, and the entire
Maven life cycle and pluginsLife cycle:A series of stages in the construction processMaven has three life cycles:1.clean. The clean life cycle includes, for example, the following stages1.1.pre-clean1.2.clean1.3.post-cleanThe 2.default,default
Last blog we talked about the basic use of fragment, I believe everyone has learned how to use. If you do not know the classmate can go to see, the portal. Now let's explain the life cycle of fragment. first, the fragment affairsBefore talking about the fragment life cycle, be sure to talk about Fragmenttransaction,
Transferred from: http://blog.sina.com.cn/s/blog_801997310101a39w.htmlI. Duties of ViewcontrollerInternal management of the associated view, external and other viewcontroller communication and coordination. The view,viewcontroller associated with it always loads the view when it is needed and unloads the view when it is not needed, so it also assumes responsibility for managing the application resources.Second, the life
three sets of life cycles: MAVEN has three separate life cycles: clean, default, and site. Clean-Cleanup Project Default-build project Site-CV project sites This one, each life cycle contains its own sub-stages, which includes the complete life
A preliminary study on the life cycle of fragmentBecause fragment must be embedded in the acitivity, the life cycle of fragment is closely related to the activity in which it resides.If the activity is paused, all of the fragment are paused, and if the activity is stopped state, all fragment in the activity cannot be a
life cycleThe Android system adds hooks to the activity life cycle, and we can do something in the hooks that these systems reserve.Examples of 7 commonly used hooks:protected void OnCreate (Bundle savedinstancestate)protected void OnStart ()protected void Onresume ()protected void OnPause ()protected void OnStop ()protected void Onrestart ()protected void OnDest
Original (English): http://blogagic.com/18/flex-component-life-cycle
Now we have a good understanding of precompilation, but we don't have to be ready to start developing new flex components.
In any case, before developing a new component, we need a clear understanding of the Flex component's life cycle. A good underst
4.1 What is life cycleTo truly understand the connotation of phonegap application development, you first need to understand what life cycle is. This is literally very easy to understand, and the process of an app being loaded from the beginning of the run to the app being exited is called a life
4.1 What is life cycleTo truly understand the connotation of phonegap application development, you first need to understand what life cycle is. This is literally very easy to understand, and the process of an app being loaded from the beginning of the run to the app being exited is called a life
In the previous article on the basic application of fragment, let's show you what fragment life cycle is like. For basic application of fragemnt, see http://blog.csdn.net/jiapeng2b/article/details/46919859.First, let's look at the life cycle of fragment first.Compared to the activity
The life cycle of a service, from the time it is created, to the time it is destroyed, can have two different paths:A started serviceThe service that is opened is created by calling StartService () from another component.This service can run indefinitely, and you must call the stopself () method or other component to call the StopService () method to stop it.When the service is stopped, the system destroys
The servlet life cycle defines how a servlet is loaded, initialized, and how it receives requests, responds to requests, and provides services. Before discussing the servlet life cycle, let's look at these methods:1. Init () methodIn the servlet's life
Tag: The source runs the tle call also has a presentation program storage unitFirst, the servlet life cycleA servlet is a servlet container (sometimes called a servlet engine) that is part of a Web server and application server that provides network services on top of sent requests and responses, decodes MIME-based requests, and formats MIME-based responses. The common Tomcat, JBoss, and WebLogic are all servlet containers, and their lifecycle is mana
The first time to write a blog, just to record my study of a process, write bad hope to see people do not spray, thank you
Activity life Cycle is one of the most basic points of learning Android, or is a key point, not only to remember, but also to understand, and not to say more into the topic:
The activity life cycle
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.