广播接收者动态注册者进程关系图

PendingResult

- int mType- boolean mOrderedHint- boolean mInitialStickyHint- IBinder mToken- int mSendingUser- int mFlags- int mResultCode- String mResultData- Bundle mResultExtras- boolean mAbortBroadcast- boolean mFinished

+ void finish()+ void sendFinished(IActivityManager am)

IntentFilter

Binder

Args

- Intent mCurIntent- boolean mOrdered- boolean mDispatched

+ void run()

InnerReceiver 用于和系统进程通信

ArrayList

应用进程的接收者在系统进程中的代理

ReceiverList

ActivityManagerService ownerIIntentReceiver receiverProcessRecord app // 注册者进程

BroadcastReceiver

- PendingResult mPendingResult

注册者进程

方法参数

前台/后台消息队列

动态接收者在系统进程中的实体

IIntentReceiver.Stub

+ void performReceive(... ... ...)

用于封装广播接收者的IntentFilter

应用定义的动态接收者

BroadcastQueue

+ ActivityManagerService mService+ ArrayList mParallelBroadcasts+ ArrayList mOrderedBroadcasts+ BroadcastRecord mPendingBroadcast+ BroadcastHandler mHandler... ... ... ...

+ void enqueueParallelBroadcastLocked(BroadcastRecord r)+ void scheduleBroadcastsLocked()+ void processNextBroadcast(boolean fromMsg)... ... ... ...

四大组件，进程的状态管理者

每个进程都有一个实例

ReceiverDispatcher.InnerReceiver

+ WeakReference<LoadedApk.ReceiverDispatcher> mDispatcher+ LoadedApk.ReceiverDispatcher mStrongRef // 为 false；

BroadcastFilter

ReceiverList receiverListString packageNameString requiredPermissionint owningUidint owningUserId

ProcessRecord

- ArraySet receivers

ActivityManagerService

+ Intent registerReceiver(... ... ...)+ BroadcastQueue broadcastQueueForIntent(Intent intent)

Runnable

相互关联

abstract

对于有序广播来说会通过 sendFinished 方法通知 AMS 广播的接收状态

IBinder.DeathRecipient

XXXBroadcastReceiver

LoadedApk.ReceiverDispatcher

- IIntentReceiver.Stub mIIntentReceiver- BroadcastReceiver mReceiver- Context mContext- Handler mActivityThread- Instrumentation mInstrumentation- boolean mRegistered- boolean mForgotten

+ void performReceive(... ... ...)+ BroadcastReceiver getIntentReceiver()

LoadedApk

... ... ...

IIntentReceiver.Stub.Prox

+ linkToDeath()