android softap增加WPS功能代码解析

最近阅读了softap增加WPS功能的源代码，，写下自己的心得体会。

1 UI

softap增加WPS功能在Settings中涉及的代码为TetherSettings.java和ApWpsDialog.java。

TetherSettings.java @Override public boolean onPreferenceTreeClick(PreferenceScreen screen, Preference preference) {if (preference == mWpsPushB) {showDialog(DIALOG_WPS_PBC);}} ApWpsDialog.java @Override protected void onStart() {mWifiManager.startWps(wpsConfig, mWpsListener); } 2 framework

WifiManager.startWps–>WifiManager.START_WPS–>WifiService–>WifiStateMachine

WifiStateMachine.java class SoftApStartedState extends State {@Overridepublic boolean processMessage(Message message) {switch(message.what) {case WifiManager.START_WPS:mSoftapMonitor.startMonitoring();WpsResult result = new WpsResult();result.status = WpsResult.Status.SUCCESS;replyToMessage(message, WifiManager.START_WPS_SUCCEEDED, result);transitionTo(mApWpsRunningState);break;}} } class ApWpsRunningState extends State {@Overridepublic boolean processMessage(Message message) {switch (message.what) {case TctSoftapMonitor.WPS_SUCCESS_EVENT:replyToMessage(mSourceMessage, WifiManager.WPS_COMPLETED);mSourceMessage.recycle();mSourceMessage = null;transitionTo(mSoftApStartedState);break;case TctSoftapMonitor.WPS_TIMEOUT_EVENT:replyToMessage(mSourceMessage, WifiManager.WPS_FAILED, WifiManager.WPS_TIMED_OUT);mSourceMessage.recycle();mSourceMessage = null;transitionTo(mSoftApStartedState);break;case CMD_TETHER_STATE_CHANGE:TetherStateChange stateChange = (TetherStateChange) message.obj;if (startTethering(stateChange.available)) {transitionTo(mTetheringState);}break;}} } 在开启softap的情况下WifiStateMachine接受到WifiManager.START_WPS进入ApWpsRunningState

接受到TctSoftapMonitor.java发送的WPS_SUCCESS_EVENT消息时表示WPS成功，会发送WPS_COMPLETED消息。

private static class ServiceHandler extends Handler {@Overridepublic void handleMessage(Message message) {switch (message.what) {case WifiManager.START_WPS_SUCCEEDED:if (listener != null) {WpsResult result = (WpsResult) message.obj;((WpsCallback) listener).onStarted(result.pin);//Listener needs to stay until completion or failuresynchronized(sListenerMapLock) {sListenerMap.put(message.arg2, listener);}}break;case WifiManager.WPS_COMPLETED:if (listener != null) {((WpsCallback) listener).onSucceeded();}break;}} } ApWpsDialog.java中的WpsListenner调用onSucceeded，updateDialog显示WPS succeeded。

3 TctSoftapMonitor.java

public void startMonitoring() {new MonitorThread().start(); } <pre class="prettyprint"> class MonitorThread extends Thread { public void run() { if (connectToSupplicant()) { mWifiNative.startWpsPbcCommand(); } //noinspection InfiniteLoopStatement for (;;) { String eventStr = mWifiNative.waitForEvent(); if (!eventStr.startsWith(EVENT_PREFIX_STR)) { if (eventStr.startsWith(WPS_SUCCESS_STR)) { //add here mStateMachine.sendMessage(WPS_SUCCESS_EVENT); mWifiNative.closeSupplicantConnection(); break; } continue; } } } private boolean connectToSupplicant() { while (true) { if (mWifiNative.connectTosoftap()) { return true; } } } }

4 wifi.c

WifiNative.java中的connectTosoftap调用wifi_connect_to_softap。

缘是浪漫的相遇，瞬间让你我的心化为永恒！

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