connectivity

Checking the Networking Connectivity using BroadcastReceiver in Android

由 北城余情 提交于 2019-11-26 15:56:35
问题 I am using the BroadcastReceiver to check the network connectivity while my app is running.I have binded the BroadcastReceiver with the Activity inorder to bring few controls like AlertDialog while the connectivity goes down. but now i don't want to restrict this receiver to a particular activity instead i want to make this to be applied for my whole app(All Activities). So what way should i have to proceed to get that done... This is the code that i have used.Please let me know whether my

Android: Internet connectivity change listener

由 早过忘川 提交于 2019-11-26 12:06:44
I already have this code which listens to connectivity change - public class NetworkStateReceiver extends BroadcastReceiver { public void onReceive(Context context, Intent intent) { Log.d("app","Network connectivity change"); if(intent.getExtras() != null) { NetworkInfo ni = (NetworkInfo) intent.getExtras().get(ConnectivityManager.EXTRA_NETWORK_INFO); if(ni != null && ni.getState() == NetworkInfo.State.CONNECTED) { Log.i("app", "Network " + ni.getTypeName() + " connected"); } } if(intent.getExtras().getBoolean(ConnectivityManager.EXTRA_NO_CONNECTIVITY, Boolean.FALSE)) { Log.d("app", "There's

Checking host availability by using ping in bash scripts

由 天涯浪子 提交于 2019-11-26 10:24:41
问题 I want to write a script, that would keep checking if any of the devices in network, that should be online all day long, are really online. I tried to use ping, but if [ \"`ping -c 1 some_ip_here`\" ] then echo 1 else echo 0 fi gives 1 no matter if I enter valid or invalid ip address. How can I check if a specific address (or better any of devices from list of ip addresses) went offline? 回答1: Ping returns different exit codes depending on the type of error. ping 256.256.256.256 ; echo $? # 68

Simulate low network connectivity for Android

由 大兔子大兔子 提交于 2019-11-26 09:06:03
问题 I would like to test my application for cases of low network connectivity. Except standing in the elevator, what is the best way to do this? I\'ve tried wrapping my phone in an aluminum foil, but it didn\'t help much. I need to test it on a real device, not in an emulator. 回答1: You can use emulator for this. Take a look at this page: Android Emulator. Pay attention to next two arguments: -netdelay <delay> Set network latency emulation to . Default value is none. See the table in Network Delay

java.sql.SQLException: No suitable driver found for jdbc:mysql://localhost:3306/dbname [duplicate]

由 99封情书 提交于 2019-11-26 07:40:30
问题 This question already has an answer here: The infamous java.sql.SQLException: No suitable driver found 13 answers I have this Java program: MySQLConnectExample.java import java.sql.*; import java.util.Properties; public class MySQLConnectExample { public static void main(String[] args) { Connection conn1 = null; Connection conn2 = null; Connection conn3 = null; try { String url1 = \"jdbc:mysql://localhost:3306/aavikme\"; String user = \"root\"; String password = \"aa\"; conn1 = DriverManager

Android event for internet connectivity state change [duplicate]

由 匆匆过客 提交于 2019-11-26 06:19:42
问题 This question already has answers here : Check INTENT internet connection (12 answers) Closed 10 months ago . I am making an app where a user is uploading information and files to my server on a somewhat frequent basis. This is done in new threads through a dedicated uploader service. I know from this thread Detect whether there is an Internet connection available on Android that you can check if there is an internet connection relatively easily. You can also get socketTimeoutExceptions to

Android: How to check if the server is available?

由 冷暖自知 提交于 2019-11-26 06:06:37
问题 I am developing an application which connects to the server. By now the login and data transmission works fine if theserver is available. The problem arises when the server is unavailable. In this case the method sends a login request and waits for the response. Does anyone know how to check if the server is available (visible)? The pseudocode of the simple logic that has to be implemented is the following: String serverAddress = (Read value from configuration file) //already done boolean

Android: Internet connectivity change listener

由 时间秒杀一切 提交于 2019-11-26 02:17:55
问题 I already have this code which listens to connectivity change - public class NetworkStateReceiver extends BroadcastReceiver { public void onReceive(Context context, Intent intent) { Log.d(\"app\",\"Network connectivity change\"); if(intent.getExtras() != null) { NetworkInfo ni = (NetworkInfo) intent.getExtras().get(ConnectivityManager.EXTRA_NETWORK_INFO); if(ni != null && ni.getState() == NetworkInfo.State.CONNECTED) { Log.i(\"app\", \"Network \" + ni.getTypeName() + \" connected\"); } } if

Detect network connection type on Android

由 杀马特。学长 韩版系。学妹 提交于 2019-11-25 23:08:00
问题 How do you detect the network connection type on Android? Is it through ConnectivityManager.getActiveNetworkInfo().getType() , and is the answer limited to Wifi and mobile? 回答1: If the problem is to find whether the phone's network is connected and fast enough to meet your demands you have to handle all the network types returned by getSubType() . It took me an hour or two to research and write this class to do just exactly that, and I thought I would share it with others that might find it

Detect the Internet connection is offline?

由 不问归期 提交于 2019-11-25 22:27:42
问题 How to detect the Internet connection is offline in JavaScript? 回答1: You can determine that the connection is lost by making failed XHR requests . The standard approach is to retry the request a few times. If it doesn't go through, alert the user to check the connection, and fail gracefully . Sidenote: To put the entire application in an "offline" state may lead to a lot of error-prone work of handling state.. wireless connections may come and go, etc. So your best bet may be to just fail
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