wifi

问题 One of our hotel clients provide free WiFi to its guests with a Hot Spot, however, there are available only a few URL to access them freely (such as Facebook or the website of the hotel) and if you need more access you should log in. We have developed the App for the hotel and one of its features is that if you open the App it gives you a complete access to the hotel WiFi, so you can navigate to any page you want. Therefore, it is necessary that the guests can download the app through the

问题 Might be a stupid question, but I don't know the logic behind. On a Wifi enabled device, GPS coordinates are accurate.(as expected) Disable Wifi and enable 3G gives a inaccurate coordinates (device location is same as in point 1.). when a distance is calculated from coordinates in point 1. and 2. Google maps shows a 5min walking distance. could someone explain the above behavior and is it possible to have same coordinates with 3G?. 回答1: Android devices have three methods of calculating

问题 I have a quite simple problem but I've still couldn't find a solution yet. What I want to accomplish: I'm trying to establish a reliable connection between a smartphone running Android and the ESP8266 wifi module. I would like to send short HTTP string messages, where the phone plays the role of a client and the ESP8266 of a server. For managing HTTP requests I'm using the Volley library. What already works: I am able to do a successful HTTP GET request to the ESP8266 from a browser running

问题 I need a notification when device has WiFi connection is available or Device get connect via WiFi. I need to do some stuff only when WiFi is available. I have used following code from Reachability: BOOL status=true; [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(checkNetworkStatus:) name:kReachabilityChangedNotification object:nil]; internetReachability = [Reachability reachabilityForInternetConnection]; [internetReachability startNotifier]; NetworkStatus

问题 OS: Android Given: User has stated that they wish to remain connected to app's server to receive updates, etc. Goal: To ensure that users are connected to app's server even when app is in background state. Question: One problem has been occasional disconnects from the network. If a user loses data network connectivity (loss of 2G, 3G, WiFi) and then later regains connectivity, our app is left without a connection. I am currently trying to make use of PhoneStateListener's in order to detect

问题 My application is making call to server at regular intervals. This requires internet connection either using Wi-Fi or GPRS. This works ok when phone is waken (screen light is on). But, as soon as phone lights are off, it makes HttpWebRequest and tried to get Internet connection. Mobile starts connecting to Wi-Fi. But, Application does not wait for establishing connection to Wi-Fi. How can I connect to Wi-Fi or GPRS before making HttpWebRequest? How to specify that I want to connect to Wi-Fi

问题 I am using following code to connect with WPA2 in android (I can connect with WEP and WPA). But I am getting only 'Scanning' status. And I am unable to connect with WPA2 network. Can you tell me what changes I need to make this code relevant with wpa2 WiFi. private boolean saveWepConfigAndEnableNetwork(String ssid, String pass) { isAlreadyPresend = false; WifiConfiguration wc = new WifiConfiguration(); wc.SSID = "\"" + ssid + "\""; // IMP! This should be in Quotes!! wc =

问题 I am looking for the best, if any, programmatic way of connecting two or more Android phones to each other through the use of either Bluetooth or preferably, Wi-Fi. Apparently Android devices still do not have ad-hoc Wi-Fi capabilities and I am trying to create a peer based program without the use of any central server. I want to accomplish this without the use of modification to the phones (no rooting). It is even fine to have a phone act as an access point with no Internet access to its

问题 We have a Delphi7 + UIB + Firebird 2.5 application for pizzerias, working rock stable on wired networks. But on wifi, (working with Win8/Win10 TabletPCs,) if the connection is broken, UIBDatabase can not reconnect itself automatically. (We are currently reconstructing the whole APP to remove "IBX leftovers", but after upgrading UIB to the latest version, problems seems to be even worse!) After a tipical connection loss, an error msg. is: Project ...exe raised exception class EUIBError with

问题 I'm still a beginner. so i hope that you will not linch me for asking funny questions Maybe it is not really a phonegap question, but i think someone will know the answer for my question. I want to make an app that send data / content from phone (android or ios) to another phone or to pc over wifi (they are on the same network). For example: Customer is choosing / ordering items on a phone and when he is done with ordering he sends order to the other person on pc / phone so the other person