1、设置中WiFi显示

Android WiFi基础概览
packages/apps/Settings/src/com/android/settings/network/NetworkProviderSettings.java
packages/apps/Settings/src/com/android/settings/wifi/WifiPickerTrackerHelper.java
frameworks/opt/net/wifi/libs/WifiTrackerLib/src/com/android/wifitrackerlib/WifiPickerTracker.java
frameworks/opt/net/wifi/libs/WifiTrackerLib/src/com/android/wifitrackerlib/BaseWifiTracker.java
frameworks/opt/net/wifi/libs/WifiTrackerLib/src/com/android/wifitrackerlib/WifiEntry.java

• mWifiPickerTracker.getConnectedWifiEntry() 当前连接的WiFi
• mWifiPickerTracker.getWifiEntries() 搜索的WiFi
• mAddWifiNetworkPreference 添加WiFi项
• WifiManager.java#connect 和 StandardWifiEntry.java#connect->WifiManager.java#connect 连接WiFi

    protected void updateWifiEntryPreferences() {// bypass the update if the activity and the view are not ready, or it's restricted UI.if (getActivity() == null || getView() == null || mIsRestricted) {return;}// in case state has changedif (mWifiPickerTracker == null|| mWifiPickerTracker.getWifiState() != WifiManager.WIFI_STATE_ENABLED) {return;}boolean hasAvailableWifiEntries = false;mWifiEntryPreferenceCategory.setVisible(true);final WifiEntry connectedEntry = mWifiPickerTracker.getConnectedWifiEntry();PreferenceCategory connectedWifiPreferenceCategory = getConnectedWifiPreferenceCategory();connectedWifiPreferenceCategory.setVisible(connectedEntry != null);if (connectedEntry != null) {final LongPressWifiEntryPreference connectedPref =connectedWifiPreferenceCategory.findPreference(connectedEntry.getKey());if (connectedPref == null || connectedPref.getWifiEntry() != connectedEntry) {connectedWifiPreferenceCategory.removeAll();final ConnectedWifiEntryPreference pref =createConnectedWifiEntryPreference(connectedEntry);pref.setKey(connectedEntry.getKey());pref.refresh();connectedWifiPreferenceCategory.addPreference(pref);pref.setOnPreferenceClickListener(preference -> {if (connectedEntry.canSignIn()) {connectedEntry.signIn(null /* callback */);} else {launchNetworkDetailsFragment(pref);}return true;});pref.setOnGearClickListener(preference -> {launchNetworkDetailsFragment(pref);});if (mClickedConnect) {mClickedConnect = false;scrollToPreference(connectedWifiPreferenceCategory);}}} else {connectedWifiPreferenceCategory.removeAll();}int index = 0;cacheRemoveAllPrefs(mWifiEntryPreferenceCategory);List<WifiEntry> wifiEntries = mWifiPickerTracker.getWifiEntries();for (WifiEntry wifiEntry : wifiEntries) {hasAvailableWifiEntries = true;String key = wifiEntry.getKey();LongPressWifiEntryPreference pref =(LongPressWifiEntryPreference) getCachedPreference(key);if (pref != null) {if (pref.getWifiEntry() == wifiEntry) {pref.setOrder(index++);continue;} else {// Create a new preference if the underlying WifiEntry object has changedremovePreference(key);}}pref = createLongPressWifiEntryPreference(wifiEntry);pref.setKey(wifiEntry.getKey());pref.setOrder(index++);pref.refresh();if (wifiEntry.getHelpUriString() != null) {pref.setOnButtonClickListener(preference -> {openSubscriptionHelpPage(wifiEntry);});}mWifiEntryPreferenceCategory.addPreference(pref);}removeCachedPrefs(mWifiEntryPreferenceCategory);if (!hasAvailableWifiEntries) {setProgressBarVisible(true);Preference pref = new Preference(getPrefContext());pref.setSelectable(false);pref.setSummary(R.string.wifi_empty_list_wifi_on);pref.setOrder(index++);pref.setKey(PREF_KEY_EMPTY_WIFI_LIST);mWifiEntryPreferenceCategory.addPreference(pref);} else {// Continuing showing progress bar for an additional delay to overlap with animationgetView().postDelayed(mHideProgressBarRunnable, 1700 /* delay millis */);}mAddWifiNetworkPreference.setOrder(index++);mWifiEntryPreferenceCategory.addPreference(mAddWifiNetworkPreference);setAdditionalSettingsSummaries();}

2、WiFi 连接流程

2.1 获取PrimaryClientModeManager

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/ActiveModeWarden.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/ISupplicantStaIfaceHal.java

WifiManager.java#connect > WifiServiceImpl.java#connect > ConnectHelper.java#connectToNetwork > ActiveModeWarden.java#getPrimaryClientModeManager/getPrimaryClientModeManagerNullable/getClientModeManagerInRole(ROLE_CLIENT_PRIMARY)

2.2 ClientModeImpl状态机ConnectableState

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/SupplicantStaIfaceHalAidlImpl.java

ConnectHelper.java#connectToNetwork > ConcreteClientModeManager.java#connectToNetwork > ClientModeImpl.java#connectNetwork > ConnectableState#CMD_CONNECT_NETWORK > ClientModeImpl.java#connectToUserSelectNetwork > ClientModeImpl.java#connectToUserSelectNetwork > ConnectableState#CMD_START_CONNECT > ClientModeImpl.java#connectToNetwork > WifiNative.java#connectToNetwork > SupplicantStaIfaceHal.java#connectToNetwork > SupplicantStaIfaceHalAidlImpl.java#connectToNetwork

    class ConnectableState extends State {private boolean mIsScreenStateChangeReceiverRegistered = false;BroadcastReceiver mScreenStateChangeReceiver = new BroadcastReceiver() {@Overridepublic void onReceive(Context context, Intent intent) {String action = intent.getAction();if (TextUtils.equals(action, Intent.ACTION_SCREEN_ON)) {sendMessage(CMD_SCREEN_STATE_CHANGED, 1);} else if (TextUtils.equals(action, Intent.ACTION_SCREEN_OFF)) {sendMessage(CMD_SCREEN_STATE_CHANGED, 0);}}};@Overridepublic void enter() {Log.d(getTag(), "entering ConnectableState: ifaceName = " + mInterfaceName);setSuspendOptimizationsNative(SUSPEND_DUE_TO_HIGH_PERF, true);mWifiStateTracker.updateState(mInterfaceName, WifiStateTracker.INVALID);mIpClientCallbacks = new IpClientCallbacksImpl();Log.d(getTag(), "Start makeIpClient ifaceName = " + mInterfaceName);mFacade.makeIpClient(mContext, mInterfaceName, mIpClientCallbacks);mIpClientCallbacks.awaitCreation();}private void continueEnterSetup(IpClientManager ipClientManager) {mIpClient = ipClientManager;setupClientMode();IntentFilter filter = new IntentFilter();filter.addAction(Intent.ACTION_SCREEN_ON);filter.addAction(Intent.ACTION_SCREEN_OFF);if (!mIsScreenStateChangeReceiverRegistered) {mContext.registerReceiver(mScreenStateChangeReceiver, filter);mIsScreenStateChangeReceiverRegistered = true;}// Learn the initial state of whether the screen is on.// We update this field when we receive broadcasts from the system.handleScreenStateChanged(mContext.getSystemService(PowerManager.class).isInteractive());if (!mWifiNative.removeAllNetworks(mInterfaceName)) {loge("Failed to remove networks on entering connect mode");}mWifiInfo.reset();mWifiInfo.setSupplicantState(SupplicantState.DISCONNECTED);sendNetworkChangeBroadcast(DetailedState.DISCONNECTED);// Inform metrics that Wifi is Enabled (but not yet connected)mWifiMetrics.setWifiState(mInterfaceName, WifiMetricsProto.WifiLog.WIFI_DISCONNECTED);mWifiMetrics.logStaEvent(mInterfaceName, StaEvent.TYPE_WIFI_ENABLED);mWifiScoreCard.noteSupplicantStateChanged(mWifiInfo);}@Overridepublic void exit() {// Inform metrics that Wifi is being disabled (Toggled, airplane enabled, etc)mWifiMetrics.setWifiState(mInterfaceName, WifiMetricsProto.WifiLog.WIFI_DISABLED);mWifiMetrics.logStaEvent(mInterfaceName, StaEvent.TYPE_WIFI_DISABLED);if (!mWifiNative.removeAllNetworks(mInterfaceName)) {loge("Failed to remove networks on exiting connect mode");}if (mIsScreenStateChangeReceiverRegistered) {mContext.unregisterReceiver(mScreenStateChangeReceiver);mIsScreenStateChangeReceiverRegistered = false;}stopClientMode();mWifiScoreCard.doWrites();}@Overridepublic boolean processMessage(Message message) {switch (message.what) {case CMD_CONNECTABLE_STATE_SETUP:if (mIpClient != null) {loge("Setup connectable state again when IpClient is ready?");} else {IpClientManager ipClientManager = (IpClientManager) message.obj;continueEnterSetup(ipClientManager);}break;case CMD_ENABLE_RSSI_POLL: {mEnableRssiPolling = (message.arg1 == 1);break;}case CMD_SCREEN_STATE_CHANGED: {handleScreenStateChanged(message.arg1 != 0);break;}case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: {if (mIpClient == null) {logd("IpClient is not ready, "+ "WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST dropped");break;}if (mWifiP2pConnection.shouldTemporarilyDisconnectWifi()) {mWifiMetrics.logStaEvent(mInterfaceName, StaEvent.TYPE_FRAMEWORK_DISCONNECT,StaEvent.DISCONNECT_P2P_DISCONNECT_WIFI_REQUEST);mWifiNative.disconnect(mInterfaceName);} else {mWifiNative.reconnect(mInterfaceName);}break;}case CMD_RECONNECT: {WorkSource workSource = (WorkSource) message.obj;mWifiConnectivityManager.forceConnectivityScan(workSource);break;}case CMD_REASSOCIATE: {if (mIpClient != null) {logd("IpClient is not ready, REASSOCIATE dropped");mWifiNative.reassociate(mInterfaceName);}break;}case CMD_START_CONNECT: {if (mIpClient == null) {logd("IpClient is not ready, START_CONNECT dropped");break;}/* connect command coming from auto-join */int netId = message.arg1;int uid = message.arg2;String bssid = (String) message.obj;mSentHLPs = false;// Stop lingering (if it was lingering before) if we start a new connection.// This means that the ClientModeManager was reused for another purpose, so it// should no longer be in lingering mode.mClientModeManager.setShouldReduceNetworkScore(false);if (!hasConnectionRequests()) {if (mNetworkAgent == null) {loge("CMD_START_CONNECT but no requests and not connected,"+ " bailing");break;} else if (!mWifiPermissionsUtil.checkNetworkSettingsPermission(uid)) {loge("CMD_START_CONNECT but no requests and connected, but app "+ "does not have sufficient permissions, bailing");break;}}WifiConfiguration config =mWifiConfigManager.getConfiguredNetworkWithoutMasking(netId);logd("CMD_START_CONNECT "+ " my state " + getCurrentState().getName()+ " nid=" + netId+ " roam=" + mIsAutoRoaming);if (config == null) {loge("CMD_START_CONNECT and no config, bail out...");break;}mCurrentConnectionDetectedCaptivePortal = false;mTargetNetworkId = netId;// Update scorecard while there is still state from existing connectionmLastScanRssi = mWifiConfigManager.findScanRssi(netId,mWifiHealthMonitor.getScanRssiValidTimeMs());mWifiScoreCard.noteConnectionAttempt(mWifiInfo, mLastScanRssi, config.SSID);mWifiBlocklistMonitor.setAllowlistSsids(config.SSID, Collections.emptyList());mWifiBlocklistMonitor.updateFirmwareRoamingConfiguration(Set.of(config.SSID));updateWifiConfigOnStartConnection(config, bssid);reportConnectionAttemptStart(config, mTargetBssid,WifiMetricsProto.ConnectionEvent.ROAM_UNRELATED);String currentMacAddress = mWifiNative.getMacAddress(mInterfaceName);mWifiInfo.setMacAddress(currentMacAddress);Log.i(getTag(), "Connecting with " + currentMacAddress + " as the mac address");mTargetWifiConfiguration = config;mNetworkNotFoundEventCount = 0;/* Check for FILS configuration again after updating the config */if (config.isFilsSha256Enabled() || config.isFilsSha384Enabled()) {boolean isIpClientStarted = startIpClient(config, true);if (isIpClientStarted) {mIpClientWithPreConnection = true;transitionTo(mL2ConnectingState);break;}}mInsecureEapNetworkHandler.prepareConnection(mTargetWifiConfiguration);setSelectedRcoiForPasspoint(config);connectToNetwork(config);break;}case CMD_START_FILS_CONNECTION: {if (mIpClient == null) {logd("IpClient is not ready, START_FILS_CONNECTION dropped");break;}mWifiMetrics.incrementConnectRequestWithFilsAkmCount();List<Layer2PacketParcelable> packets;packets = (List<Layer2PacketParcelable>) message.obj;if (mVerboseLoggingEnabled) {Log.d(getTag(), "Send HLP IEs to supplicant");}addLayer2PacketsToHlpReq(packets);WifiConfiguration config = mTargetWifiConfiguration;connectToNetwork(config);break;}case CMD_CONNECT_NETWORK: {ConnectNetworkMessage cnm = (ConnectNetworkMessage) message.obj;if (mIpClient == null) {logd("IpClient is not ready, CONNECT_NETWORK dropped");cnm.listener.sendFailure(WifiManager.ActionListener.FAILURE_INTERNAL_ERROR);break;}NetworkUpdateResult result = cnm.result;int netId = result.getNetworkId();connectToUserSelectNetwork(netId, message.sendingUid, result.hasCredentialChanged(),cnm.packageName);mWifiMetrics.logStaEvent(mInterfaceName, StaEvent.TYPE_CONNECT_NETWORK,mWifiConfigManager.getConfiguredNetwork(netId));cnm.listener.sendSuccess();break;}case CMD_SAVE_NETWORK: {ConnectNetworkMessage cnm = (ConnectNetworkMessage) message.obj;if (mIpClient == null) {logd("IpClient is not ready, SAVE_NETWORK dropped");cnm.listener.sendFailure(WifiManager.ActionListener.FAILURE_INTERNAL_ERROR);break;}NetworkUpdateResult result = cnm.result;int netId = result.getNetworkId();if (mWifiInfo.getNetworkId() == netId) {if (result.hasCredentialChanged()) {// The network credentials changed and we're connected to this network,// start a new connection with the updated credentials.logi("CMD_SAVE_NETWORK credential changed for nid="+ netId + ". Reconnecting.");startConnectToNetwork(netId, message.sendingUid, SUPPLICANT_BSSID_ANY);} else {if (result.hasProxyChanged()) {if (mIpClient != null) {log("Reconfiguring proxy on connection");WifiConfiguration currentConfig =getConnectedWifiConfigurationInternal();if (currentConfig != null) {mIpClient.setHttpProxy(currentConfig.getHttpProxy());} else {Log.w(getTag(),"CMD_SAVE_NETWORK proxy change - but no current "+ "Wi-Fi config");}}}if (result.hasIpChanged()) {// The current connection configuration was changed// We switched from DHCP to static or from static to DHCP, or the// static IP address has changed.log("Reconfiguring IP on connection");WifiConfiguration currentConfig =getConnectedWifiConfigurationInternal();if (currentConfig != null) {transitionTo(mL3ProvisioningState);} else {Log.w(getTag(), "CMD_SAVE_NETWORK Ip change - but no current "+ "Wi-Fi config");}}}} else if (mWifiInfo.getNetworkId() == WifiConfiguration.INVALID_NETWORK_ID&& result.hasCredentialChanged()) {logi("CMD_SAVE_NETWORK credential changed for nid="+ netId + " while disconnected. Connecting.");WifiConfiguration config =mWifiConfigManager.getConfiguredNetwork(netId);if (!mWifiPermissionsUtil.isAdminRestrictedNetwork(config)) {startConnectToNetwork(netId, message.sendingUid, SUPPLICANT_BSSID_ANY);}} else if (result.hasCredentialChanged()) {WifiConfiguration currentConfig =getConnectedWifiConfigurationInternal();WifiConfiguration updatedConfig =mWifiConfigManager.getConfiguredNetwork(netId);if (currentConfig != null && currentConfig.isLinked(updatedConfig)) {logi("current network linked config saved, update linked networks");updateLinkedNetworks(currentConfig);}}cnm.listener.sendSuccess();break;}case CMD_BLUETOOTH_CONNECTION_STATE_CHANGE: {mWifiNative.setBluetoothCoexistenceScanMode(mInterfaceName, mWifiGlobals.isBluetoothConnected());break;}case CMD_SET_SUSPEND_OPT_ENABLED: {if (message.arg1 == 1) {setSuspendOptimizationsNative(SUSPEND_DUE_TO_SCREEN, true);if (message.arg2 == 1) {mSuspendWakeLock.release();}} else {setSuspendOptimizationsNative(SUSPEND_DUE_TO_SCREEN, false);}break;}case WifiMonitor.ANQP_DONE_EVENT: {mPasspointManager.notifyANQPDone((AnqpEvent) message.obj);break;}case CMD_STOP_IP_PACKET_OFFLOAD: {int slot = message.arg1;int ret = stopWifiIPPacketOffload(slot);if (mNetworkAgent != null) {mNetworkAgent.sendSocketKeepaliveEvent(slot, ret);}break;}case WifiMonitor.RX_HS20_ANQP_ICON_EVENT: {mPasspointManager.notifyIconDone((IconEvent) message.obj);break;}case WifiMonitor.HS20_DEAUTH_IMMINENT_EVENT:mPasspointManager.handleDeauthImminentEvent((WnmData) message.obj,getConnectedWifiConfigurationInternal());break;case WifiMonitor.HS20_TERMS_AND_CONDITIONS_ACCEPTANCE_REQUIRED_EVENT:mWifiMetrics.incrementTotalNumberOfPasspointConnectionsWithTermsAndConditionsUrl();mTermsAndConditionsUrl = mPasspointManager.handleTermsAndConditionsEvent((WnmData) message.obj,getConnectedWifiConfigurationInternal());if (mTermsAndConditionsUrl == null) {loge("Disconnecting from Passpoint network due to an issue with the "+ "Terms and Conditions URL");sendMessage(CMD_DISCONNECT, StaEvent.DISCONNECT_PASSPOINT_TAC);}break;case WifiMonitor.HS20_REMEDIATION_EVENT:mPasspointManager.receivedWnmFrame((WnmData) message.obj);break;case WifiMonitor.MBO_OCE_BSS_TM_HANDLING_DONE: {handleBssTransitionRequest((BtmFrameData) message.obj);break;}case CMD_CONFIG_ND_OFFLOAD: {final boolean enabled = (message.arg1 > 0);mWifiNative.configureNeighborDiscoveryOffload(mInterfaceName, enabled);break;}// Link configuration (IP address, DNS, ...) changes notified via netlinkcase CMD_UPDATE_LINKPROPERTIES: {updateLinkProperties((LinkProperties) message.obj);break;}case CMD_START_IP_PACKET_OFFLOAD:case CMD_ADD_KEEPALIVE_PACKET_FILTER_TO_APF:case CMD_REMOVE_KEEPALIVE_PACKET_FILTER_FROM_APF: {if (mNetworkAgent != null) {mNetworkAgent.sendSocketKeepaliveEvent(message.arg1,SocketKeepalive.ERROR_INVALID_NETWORK);}break;}case CMD_INSTALL_PACKET_FILTER: {mCachedPacketFilter = (byte[]) message.obj;if (mContext.getResources().getBoolean(R.bool.config_wifiEnableApfOnNonPrimarySta)|| isPrimary()) {mWifiNative.installPacketFilter(mInterfaceName, mCachedPacketFilter);} else {Log.v(TAG, "Not applying packet filter on non primary CMM");}break;}case CMD_READ_PACKET_FILTER: {final byte[] packetFilter;if (mContext.getResources().getBoolean(R.bool.config_wifiEnableApfOnNonPrimarySta)|| isPrimary()) {packetFilter = mWifiNative.readPacketFilter(mInterfaceName);} else {Log.v(TAG, "Retrieving cached packet filter on non primary CMM");packetFilter = mCachedPacketFilter;}if (mIpClient != null) {mIpClient.readPacketFilterComplete(packetFilter);}break;}case CMD_SET_FALLBACK_PACKET_FILTERING: {if ((boolean) message.obj) {mWifiNative.startFilteringMulticastV4Packets(mInterfaceName);} else {mWifiNative.stopFilteringMulticastV4Packets(mInterfaceName);}break;}case CMD_DIAGS_CONNECT_TIMEOUT: {mWifiDiagnostics.reportConnectionEvent(WifiDiagnostics.CONNECTION_EVENT_TIMEOUT, mClientModeManager);break;}case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED:case CMD_RESET_SIM_NETWORKS:case WifiMonitor.NETWORK_CONNECTION_EVENT:case WifiMonitor.NETWORK_DISCONNECTION_EVENT:case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT:case WifiMonitor.AUTHENTICATION_FAILURE_EVENT:case WifiMonitor.ASSOCIATION_REJECTION_EVENT:case CMD_RSSI_POLL:case CMD_ONESHOT_RSSI_POLL:case CMD_PRE_DHCP_ACTION:case CMD_PRE_DHCP_ACTION_COMPLETE:case CMD_POST_DHCP_ACTION:case WifiMonitor.SUP_REQUEST_IDENTITY:case WifiMonitor.SUP_REQUEST_SIM_AUTH:case WifiMonitor.TARGET_BSSID_EVENT:case WifiMonitor.ASSOCIATED_BSSID_EVENT:case WifiMonitor.TRANSITION_DISABLE_INDICATION:case CMD_UNWANTED_NETWORK:case CMD_CONNECTING_WATCHDOG_TIMER:case WifiMonitor.NETWORK_NOT_FOUND_EVENT:case CMD_ROAM_WATCHDOG_TIMER: {// no-op: all messages must be handled in the base state in case it was missed// in one of the child states.break;}case CMD_ACCEPT_EAP_SERVER_CERTIFICATE:case CMD_REJECT_EAP_SERVER_CERTIFICATE:case CMD_START_ROAM:case CMD_START_RSSI_MONITORING_OFFLOAD:case CMD_STOP_RSSI_MONITORING_OFFLOAD:case CMD_IP_CONFIGURATION_SUCCESSFUL:case CMD_IP_CONFIGURATION_LOST:case CMD_IP_REACHABILITY_LOST:case CMD_IP_REACHABILITY_FAILURE: {mMessageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD;break;}case 0: {// We want to notice any empty messages (with what == 0) that might crop up.// For example, we may have recycled a message sent to multiple handlers.Log.wtf(getTag(), "Error! empty message encountered");break;}default: {loge("Error! unhandled message" + message);break;}}logStateAndMessage(message, this);return HANDLED;}}

2.3 ISupplicantStaNetworkCallback 回调监听

packages/modules/Wifi/service/java/com/android/server/wifi/SupplicantStaNetworkHalAidlImpl.java
packages/modules/Wifi/service/java/com/android/server/wifi/SupplicantStaNetworkCallbackAidlImpl.java

SupplicantStaIfaceHalAidlImpl.java#connectToNetwork / addNetworkAndSaveConfig > SupplicantStaNetworkHalAidlImpl.java#saveWifiConfiguration / registerNewCallback / registerCallback > mISupplicantStaNetwork.registerCallback(callback)

3、 简要时序图

4、原生低层驱动

external/wpa_supplicant_8

5、关键日志

WifiService: connect uid=|WifiConfigManager: Adding/Updating network|WifiConfigManager: Enable disabled network:|WifiConfigManager: Enabling network|WifiConfigManager: Update network last connect|WifiPickerTracker: Received broadcast:|WifiClientModeImpl.*entering.*State|WifiClientModeImpl.*entering|WifiClientModeImpl.*connectToUserSelectNetwork netId|WifiClientModeImpl.*CMD_START_CONNECT|WifiClientModeImpl.*Select candidate security params for|WifiClientModeImpl.*Connecting with|SupplicantStaIfaceHalAidlImpl: connectToNetwork|SupplicantStaNetworkHalAidlImpl: Successfully set SSID|SupplicantStaNetworkHalAidlImpl: The target security params|SupplicantStaIfaceHalAidlImpl: ISupplicantStaIfaceCallback|wpa_supplicant:.* State:|wpa_supplicant: Notifying state change event|wpa_supplicant: wlan

wpa_supplicant: wlan|wpa_supplicant: