wifi

问题 I'm writing a travel guide related app that will download large databases (60meg) potentially overseas, with the reachability code I can tell when a host is reachable via wifi or 3g BUT I'm worried that if for some reason the wifi connection breaks for a minute or so as some DSL connections are likely to do on occasion the iphone will switch transparently to 3G and without realising I could be racking up someones phone bill with overseas data charges! So I'm wondering if anyone has any

问题 I'm 14, pardon my Python knowlege. I'm trying to make this program that will only run while I'm at school (on the school's Wifi) using an if/else statement like this: if ontheschoolwifi: Keep running the program else: close the program because im not at school and wont need it I'd like to know how to let python know how to get what wifi it is connected to. Thank you, in advance, for your help :) 回答1: import subprocess if "SchoolWifiName" in subprocess.check_output("netsh wlan show interfaces"

问题 I'm 14, pardon my Python knowlege. I'm trying to make this program that will only run while I'm at school (on the school's Wifi) using an if/else statement like this: if ontheschoolwifi: Keep running the program else: close the program because im not at school and wont need it I'd like to know how to let python know how to get what wifi it is connected to. Thank you, in advance, for your help :) 回答1: import subprocess if "SchoolWifiName" in subprocess.check_output("netsh wlan show interfaces"

问题 I am using EAWiFiUnconfiguredAccessoryBrowser to detect EAWiFiUnconfiguredAccessory . The code to start the accessory search it's the following: - (void)viewDidLoad { [super viewDidLoad]; if (_accessories == nil) { _accessories = [[NSMutableArray alloc] init]; } if (_browser == nil) { _browser = [[EAWiFiUnconfiguredAccessoryBrowser alloc] initWithDelegate:self queue:nil]; _browser.delegate = self; } } Unfortunately it does find accessories only the first time the View loads. If I go back to

问题 I have a ESP8266 chip which is connected to the microcircuit. When chip gets value "200" the light is starting to blink 4 times and than it returns "100" value. I need to make an Android app using Java which will connect to the ESP8266 chip, send data to it and will get value "100". I don't know what library I should use to deal with it. Please, help me, how can I do that? I think it is not the most hard question here. 回答1: For your Controller you dont need any Libary. You just can use the

问题 I am specifically asking about javascript on a mobile webpage, not an objective-c application. Is there something like Apple Reachability for javascript so I can tell when Edge, 3G or Wifi connection is made or changed? 回答1: Not unless browsers start giving this information away through the DOM which, currently, they don't. There is a navigator javascript objects which holds many things but not what you're looking for. I've also read in the news recently that some cellular carrier was adding

问题 In iOS 8, Apple allows us to connect to a device via Wifi direct and share wifi network credentials with it. We can do it in wifi settings page but also in an app. I'm trying to launch a scan to find wifi MFI devices. I can see those in the wifi settings but not in app. Here is how I do this: EAWiFiUnconfiguredAccessoryBrowser *_wifiBrowser = [[EAWiFiUnconfiguredAccessoryBrowser alloc] initWithDelegate:self queue:nil]; [_wifiBrowser startSearchingForUnconfiguredAccessoriesMatchingPredicate

问题 How to get Wi-Fi encryption mode in iOS without private libraries? 回答1: The code from the answer above has been posted originally on this website: http://www.codeproject.com/Articles/621213/Non-Standard-Way-to-Get-Inaccessible-Data-from-iOS By the way, for this code to work you need to include the appropriate header files with #include <mach/mach.h> so that your compiler recognizes NDR_record_t ndr . However, this whole setup did not actually return me the encryption mode of the current WiFi,

问题 Can I connect a WiFi Direct enabled device to any other device which doesn't have WiFi Direct feature but supports WiFi hotspot connection? Does WiFi direct uses specialized hardware to be present on both devices? Will network discovery work in such cases? 回答1: It is possible. Code taken from a talk I gave at Droidcon UK 2013. You need to call the createGroup(WifiP2pManager.Channel c, WifiP2pManager.ActionListener listener) method of the WifiP2pManager class. This will create a Wi-Fi Direct

问题 I am very new to Win7 and WMI. Please advice me where to see for active access point from WiFi and how to get ssid/rssi for each access point. I have use: ManagementClass mc = new ManagementClass("root\\WMI", "MSNdis_80211_ServiceSetIdentifier", null); ManagementObjectSearcher searcher1 = new ManagementObjectSearcher(@"root\wmi","SELECT * FROM MSNdis_80211_BSSIList"); but I got 0 results. Is this class support Win7? Anybody can help? 回答1: I had a similar problem where I needed to get the SSID