[RK3288][Android6.0] WiFi在Setting中的开启过程小结

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我是靠谱客的博主优雅热狗，最近开发中收集的这篇文章主要介绍[RK3288][Android6.0] WiFi在Setting中的开启过程小结，觉得挺不错的，现在分享给大家，希望可以做个参考。

概述

Platform: Rockchip
OS: Android 6.0
Kernel: 3.10.92

当Setting选项中打开Wifi时, 调用流程如下,入口主要是setWifiEnabled()函数.

onSwitchChanged -> WifiEnabler.java settings apk中.

   mWifiManager.setWifiEnabled ->
       setWifiEnabled   ->    WifiManager.java
           mService.setWifiEnabled ->
           setWifiEnabled ->   WifiServiceImpl.java
               mSettingsStore.handleWifiToggled   WifiSettingsStore.java   //检查airplaymode下是否能打开wifi
               mWifiController.sendMessage(CMD_WIFI_TOGGLED);
                   processMessage ->   WifiController.java //ApStaDisabledState类
                       transitionTo(mDeviceActiveState); ->
                           enter   //StaEnabledState类(ApStaDisabledState的父类)
                               mWifiStateMachine.setSupplicantRunning ->   StaEnabledState
                                   setSupplicantRunning   WifiStateMachine.java
                                       sendMessage(CMD_START_SUPPLICANT); ->
                           enter ->   DeviceActiveState类
                               mWifiStateMachine.setOperationalMode(WifiStateMachine.CONNECT_MODE) ->
                                   sendMessage(CMD_SET_OPERATIONAL_MODE, mode, 0)
                               mWifiStateMachine.setDriverStart(true) ->
                                   sendMessage(CMD_START_DRIVER)
                           processMessage ->   InitialState类
                               mWifiNative.loadDriver   //wifi驱动在开机已经加载完成，这里不做处理。
                               mNwService.wifiFirmwareReload　   //wifi固件在开机已经加载完成，这里不做处理。
                               mNwService.setInterfaceDown(mInterfaceName);   //关闭网卡，设置interfaceDriverStartedState

WifiNative.startHal

startHalNative

new MonitorThread //接收来自WPS的消息

                               mWifiNative.startSupplicant   //开启supplicant
                               mWifiMonitor.startMonitoring　　-> //创建两个socket和wps交互
                                   mWifiNative.connectToSupplicant
                                   m.mStateMachine.sendMessage(SUP_CONNECTION_EVENT);
                                   MonitorThread(mWifiNative, this).start　->
                                       run   ->   WifiMonitor.java
                                           mWifiNative.waitForEvent   //收取wps发上来的event
                                           mWifiMonitorSingleton.dispatchEvent
                               transitionTo(mSupplicantStartingState) ->
                                   processMessage -> SupplicantStartingState类,上面发送了SUP_CONNECTION_EVENT
                                       mWifiInfo.setMacAddress
                                       setFrequencyBand
                                       mWifiNative.enableSaveConfig ->
                                           doBooleanCommand   //发送命令给wps
                                       mWifiConfigStore.loadAndEnableAllNetworks ->
                                           loadAndEnableAllNetworks -> WifiConfigStore.java
                                               mWifiNative.listNetworks
                                               readNetworkVariables
                                           enableAllNetworks
                                       transitionTo(mDriverStartedState) ->
                                           enter ->   SupplicantStartedState类(DriverStartedState的父类)
                                               mWifiNative.enableAutoConnect
                                           enter ->   DriverStartedState类
                                               transitionTo(mDisconnectedState) ->
                                           enter -> DisconnectedState类
                                               startScan
                                               processMessage -> //这时前面的下一条消息CMD_SET_OPERATIONAL_MODE会被处理
                                           processMessage ->    处理最后之后的一条消息CMD_START_DRIVER