用代码画流程图和时序图快餐教程(3) - PlantUML画时序图

PlantUML画时序图

用描述性的语言来写UML，尤其是Sequence Diagram，PlantUML应该是很多同学的首选了吧。

网址：
http://plantuml.com/

我们可以使用eclipse的plugin来写PlantUML，如下：

速成教程

@startuml和@enduml

这个没啥说的，开始的时候用@startuml，结束的时候要加个@enduml。

标题

格式： title 标题名

participant

格式：participant 类名 #颜色

例:

@startuml
title Android Broadcast procedure

participant Activity #Lime
participant ContextWrapper #Cyan
@enduml

消息传递

格式：类1 -> 类2 : 消息

例：

@startuml
title Android Broadcast procedure

participant Activity #Lime
participant ContextWrapper #Cyan

Activity -> ContextWrapper : registerReceiver()
@enduml

自动编号

加一句话：autonumber

例子

好了，快餐教程讲多了大家就烦了，所以基本够用的讲完了我们就看个例子吧：

@startuml
title Android Broadcast procedure
participant Activity #Lime
participant ContextWrapper #Cyan
participant ContextImpl #Cyan
participant ActivityManagerService #Cyan
participant ActivityStackSupervisor #Cyan
participant ActivityStack #Cyan
participant ApplicationThreadProxy #Silver
participant InnerReceiver #Magenta
participant ReceiverDispatcher #Magenta
participant BroadcastReceiver #Magenta

autonumber
Activity -> ContextWrapper : registerReceiver()
ContextWrapper -> ContextImpl : registerReceiver()
ContextImpl -> LoadedApk : getReceiverDispatcher()
LoadedApk -> ActivityManagerProxy : registerReceiver()
ActivityManagerProxy -> ActivityManagerService : registerReceiver()

Activity -> ContextWrapper : sendBroadcast()
ContextWrapper -> ContextImpl : sendBroadcast()
ContextImpl -> ActivityManagerService: broadcastIntent()
ActivityManagerService -> ActivityManagerService : broadcastIntentLocked()
ActivityManagerService -> ActivityManagerService : collectReceiverComponents()
ActivityManagerService -> ActivityManagerService : scheduleBroadcastsLocked()
ActivityManagerService -> ActivityManagerService : processNextBroadcast()
ActivityManagerService -> ActivityManagerService : deliverToRegisteredReceiverLocked()
ActivityManagerService -> ActivityManagerService : performReceiveLocked()
ActivityManagerService -> ApplicationThreadProxy : scheduleRegisteredReceiver()
ApplicationThreadProxy -> InnerReceiver : performReceive()
InnerReceiver -> ReceiverDispatcher : performReceive()
ReceiverDispatcher -> BroadcastReceiver : onReceive()

Activity -> ContextWrapper : sendOrderedBroadcast()
ContextWrapper -> ContextImpl : sendOrderedBroadcast()
ContextImpl -> ActivityManagerService: broadcastIntent()
@enduml

显示的结果如下：