[移动开发]Android 12 WiFi Open 流程[2]

Android 12 WiFi Open [Code Flow] - 1

上面讲到initIWifiIfNecessary 得到mWifi，继而mWifi.start() 打开wifi模块；

这里涉及到HIDL调用，HIDL是Android 8引入的为HAL定制的进场间通信接口

916    /**
917     * Initialize IWifi and register death listener and event callback.
918     *
919     * - It is possible that IWifi is not ready - we have a listener on IServiceManager for it.
920     * - It is not expected that any of the registrations will fail. Possible indication that
921     *   service died after we obtained a handle to it.
922     *
923     * Here and elsewhere we assume that death listener will do the right thing!
924    */
925    private void initIWifiIfNecessary() {
926        if (mDbg) Log.d(TAG, "initIWifiIfNecessary");
927
928        synchronized (mLock) {
929            if (mWifi != null) {
930                return

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