connectivity

问题 Does anyone know of a way to obtain the phone service state (IN_SERVICE, OUT_OF_SERVICE, EMERGENCY_ONLY, POWER_OFF) in android. I was hoping there would be a broadcastreciever to identify the changes, but I can't find anything. I know there's a listener but I'm not sure how I would use that from my app as it runs as a service using a WakefulIntentService (by thecommonsguy). With something like battery level (ie BATTERY_LOW, BATTERY_OKAY) it's quite easy, but I just can't work out a similar

问题 Below is the piece of Android code which works fine to check if network is connected or not. public static boolean isNetworkAvailable(Context context) { ConnectivityManager mConnectivityManager = (ConnectivityManager)context.getSystemService(Context.CONNECTIVITY_SERVICE); return (mConnectivityManager != null && mConnectivityManager.getActiveNetworkInfo().isConnectedOrConnecting()) ? true : false; } <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" /> But having an active

问题 I am using Apple's reachability code, and am setting up both initial notifications on when network reachability changes and prior to initiating a server connection. The code works when I am on wi-fi and I turn the wi-fi access point off. However, when I start the app with wi-fi and the underlying broadband connection working, and then once the app is running, and then disconnect the wi-fi router from the broadband router (i.e. Wi-Fi is on but there is no internet connectivity), and I do a

问题 This is an error for me. I have used proper password as this is what I type when I start MySQL. DefaultTableModel dtm=(DefaultTableModel) jTable1.getModel(); dtm.setRowCount(0); try{ Class.forName("java.sql.Driver"); Connection c=DriverManager.getConnection("jdbc:mysql://localhost/shashvat","root","1234"); Statement s=c.createStatement(); ResultSet r=s.executeQuery("select * from phasetests;"); while(r.next()){ Object arr[]={r.getString(1),r.getString(2),r.getString(3),r.getString(4)}; dtm

问题 I have a doubt that whether Pooling actually works with vb.net. I used below query to check the connection to the database from different pc. SELECT hostname,p.status,[program_name],loginame,name FROM Master..sysprocesses as p join master.dbo.sysdatabases as d on p.dbID = d.dbID WHERE p.ecid=0 and p.hostname<>'' order by name In the output i saw more than one connection from a pc to the same database. So i got doubt about this.In my vb.net application i open connection only once so i was

问题 This is about network Wifi how to connect it under android. But the question is which one is the best practice between the Code shown at here. And... this below? Because two of the source code given have a similarity but they're different in configuring the content. Please give a comment / clear answer. Thanks private void getConnected(){ // for Wifi Connectivity obWifiManager = (WifiManager) getApplicationContext().getSystemService( Context.WIFI_SERVICE); WifiConfiguration config = new

问题 My connection is flaky, however I have a backup one. I made some bash script to check for connectivity and change connection if the present one is dead. Please help me improve them. The scripts almost works, except for not waiting long enough to receive an IP (it cycles to next step in the until loop too quick). Here goes: #!/bin/bash # Invoke this script with paths to your connection specific scripts, for example # ./gotnet.sh ./connection.sh ./connection2.sh until [ -z "$1" ] # Try

问题 Is there any C++ function to test whether the computer on which my program is running supports IPv6 connectivity? I need to know something like result of this page http://test-ipv6.com/, but in C++. EDIT: I was trying to use getifaddrs() . But return value can be AF_INET6 found , because I really have IPv6 address set, but IPv6 connectivity does not work (probably because ISP). So is there some way how to check if IPv6 connectivity works indeed? 回答1: All modern operating systems support IPv6,

问题 is there any pseudo-code implementation that shows how to compute the k-vertex connectivity of a graph? 回答1: I can't post here the code from this book due to copyrights. But if you can get it, you will find not only you algorithm, but also lots of other good algorithms with codes. 来源： https://stackoverflow.com/questions/5944005/k-vertex-connectivity-of-a-graph

问题 I developing an application which connects to the server. Therefore i want use the bellow function to check if the server is available , But I don't know how I can use it in a thread and how call it each time when I need check if the server is available in activity or fragment : static public boolean isURLReachable(Context context) { ConnectivityManager cm = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE); NetworkInfo netInfo = cm.getActiveNetworkInfo(); if (netInfo !=