Android 12 WiFi开启流程

Amine.Liao

已于 2022-11-14 17:35:06 修改

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分类专栏： Android Wifi 模块文章标签： android framework

于 2022-07-29 15:57:57 首次发布

本文链接：https://blog.youkuaiyun.com/TSK_Amine/article/details/126057653

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本文详细介绍了Android 12系统中开启WiFi的流程，从`ActiveModeWarden`到`startHal`，涉及多个关键组件如`WifiManager`, `WifiServiceImpl`, `ConcreteClientModeManager`等，以及硬件接口`IWifi.hal`和`wifi.cpp`的交互。深入理解Android 12 WiFi开启的步骤和机制。" 122217423,11675501,HTML+CSS模仿W3C首页实践,"['HTML', 'CSS', '前端框架']

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/* ActiveModeWarden
* / \
* / \
* ConcreteClientModeManager DefaultClientModeManager
* (Client Mode + Scan Only Mode) (Wifi off)
* / \
* / \
* ClientModeImpl ScanOnlyModeImpl
*/
一、startHal
packages/apps/Settings/src/com/android/settings/wifi/WifiEnabler.java
frameworks/base/wifi/java/android/net/wifi/WifiManager.java
packages/modules/Wifi/service/java/com/android/server/wifi/WifiServiceImpl.java
packages/modules/Wifi/service/java/com/android/server/wifi/ActiveModeWarden.java
packages/modules/Wifi/service/java/com/android/server/wifi/ConcreteClientModeManager.java
packages/modules/Wifi/service/java/com/android/server/wifi/WifiNative.java
packages/modules/Wifi/service/java/com/android/server/wifi/WifiVendorHal.java
packages/modules/Wifi/service/java/com/android/server/wifi/HalDeviceManager.java

WifiEnabler.java ->mWifiManager.setWifiEnabled(isChecked)
---->WifiManager.java =>setWifiEnabled(boolean enabled)
--------->WifiServiceImpl.java =>setWifiEnabled(String packageName, boolean enable): mActiveModeWarden.wifiToggled(new WorkSource(Binder.getCallingUid(), packageName));
-------------->ActiveModeWarden.java =>wifiToggled(WorkSource requestorWs): mWifiController.sendMessage(WifiController.CMD_WIFI_TOGGLED, requestorWs);//发送CMD_WIFI_TOGGLED消息到EnabledState中
                                      -->ActiveModeWarden$DisabledState
                                         ->processMessageFiltered(Message msg)
                                           -->case CMD_WIFI_TOGGLED
                                              handleStaTogg

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