Android 9在连接以太网情况下 还能连接WiFi

修改 framework/opt/net/wifi/service/java/com/android/server/wifi/WifiStateMachine.java

                case CMD_START_CONNECT:
                    /* connect command coming from auto-join */
                    netId = message.arg1;
                    int uid = message.arg2;
                    bssid = (String) message.obj;

                    synchronized (mWifiReqCountLock) {
                        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;
                            }
                        }
                    }

屏蔽掉 break ，让连接操作继续执行。