Android 12 WiFi 连接流程

Amine.Liao

已于 2022-11-14 17:33:55 修改

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

于 2022-08-01 16:11:38 首次发布

本文链接：https://blog.youkuaiyun.com/TSK_Amine/article/details/126103501

版权

本文深入探讨了Android 12中WiFi连接的流程，涉及Settings应用程序、WifiManager、WifiServiceImpl、ConnectHelper等多个组件以及wpa_supplicant的相关源码，包括network的添加、选择和连接过程。

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packages/apps/Settings/src/com/android/settings/wifi/WifiSettings.java
packages/modules/Wifi/framework/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/ConnectHelper.java
packages/modules/Wifi/service/java/com/android/server/wifi/ConcreteClientModeManager.java
packages/modules/Wifi/service/java/com/android/server/wifi/ClientModeImpl.java
packages/modules/Wifi/service/java/com/android/server/wifi/WifiNative.java
packages/modules/Wifi/service/java/com/android/server/wifi/SupplicantStaIfaceHal.java
packages/modules/Wifi/service/java/com/android/server/wifi/SupplicantStaNetworkHal.java

WifiSettings.java =>onSubmit(WifiDialog2 dialog):
                    -if (dialogMode == WifiConfigUiBase2.MODE_MODIFY)
                       --if (config == null)
                           Toast.makeText(getContext(), R.string.wifi_failed_save_message,Toast.LENGTH_SHORT).show();//config为null，弹出Toast
                       --else
                           mWifiManager.save(config, mSaveListener);//修改信息后，将信息进行保存
                    -else if (dialogMode == WifiConfigUiBase2.MODE_CONNECT || (dialogMode == WifiConfigUiBase2.MODE_VIEW && wifiEntry.canConnect()))
                       --if (config == null)
                           connect(wifiEntry, false /* editIfNoConfig */,false /* fullScreenEdit*/);
                       --else
                          mWifiManager.connect(config, new WifiConnectActionListener());//调用connect进行连接
-->WifiManager.java=>connect(@NonNull WifiConfiguration config, @Nullable ActionListener listener):connectInternal(config, WifiConfiguration.INVALID_NETWORK_ID, listener);
                       ->connectInternal(@Nullable WifiConfiguration config, int networkId,@Nullable ActionListener listener):mService.connect(config, networkId, listenerProxy);
------>WifiServiceImpl.java=> connect(WifiConfiguration config, int netId, @Nullable IActionListener callback):
                              -mMakeBeforeBreakManager.stopAllSecondaryTransientClientModeManagers(() ->mConnectHelper.connectToNetwork(result, wrapper, uid));
-------->ConnectHelper.java=>connectToNetwork(@NonNull NetworkUpdateResult result,@NonNull ActionListenerWrapper wrapper,int callingUid):
                             -connectToNetwork(mActiveModeWarden.getPrimaryClientModeManager(), result, wrapper, callingUid);//mActiveModeWarden.getPrimaryClientModeManager()状态机获取当前状态
                             ->connectToNetwork(@NonNull Clie

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