how do i check for intenet connection in my app

[Suzzane Pinto]

hi,

i want to check for internet connection in my android app.and give the user a custom message if internet not available in phone....as i have connections to server everytym...
i have followed this link:
http://www.chrisdadswell.co.uk/android-coding-example-checking-for-the-presence-of-an-internet-connection-on-an-android-device/
but on implementation it gives me exception as:

05-14 12:10:05.796: E/AndroidRuntime(19076): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.carouseldemo.main/com.carouseldemo.main.MainActivity}: java.lang.SecurityException: ConnectivityService: Neither user 10064 nor current process has android.permission.ACCESS_NETWORK_STATE.
05-14 12:10:05.796: E/AndroidRuntime(19076): 	at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1651)
05-14 12:10:05.796: E/AndroidRuntime(19076): 	at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1667)
05-14 12:10:05.796: E/AndroidRuntime(19076): 	at android.app.ActivityThread.access$1500(ActivityThread.java:117)
05-14 12:10:05.796: E/AndroidRuntime(19076): 	at android.app.ActivityThread$H.handleMessage(ActivityThread.java:935)
05-14 12:10:05.796: E/AndroidRuntime(19076): 	at android.os.Handler.dispatchMessage(Handler.java:99)
05-14 12:10:05.796: E/AndroidRuntime(19076): 	at android.os.Looper.loop(Looper.java:130)
05-14 12:10:05.796: E/AndroidRuntime(19076): 	at android.app.ActivityThread.main(ActivityThread.java:3687)
05-14 12:10:05.796: E/AndroidRuntime(19076): 	at java.lang.reflect.Method.invokeNative(Native Method)
05-14 12:10:05.796: E/AndroidRuntime(19076): 	at java.lang.reflect.Method.invoke(Method.java:507)
05-14 12:10:05.796: E/AndroidRuntime(19076): 	at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:867)
05-14 12:10:05.796: E/AndroidRuntime(19076): 	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:625)
05-14 12:10:05.796: E/AndroidRuntime(19076): 	at dalvik.system.NativeStart.main(Native Method)
05-14 12:10:05.796: E/AndroidRuntime(19076): Caused by: java.lang.SecurityException: ConnectivityService: Neither user 10064 nor current process has android.permission.ACCESS_NETWORK_STATE.
05-14 12:10:05.796: E/AndroidRuntime(19076): 	at android.os.Parcel.readException(Parcel.java:1322)
05-14 12:10:05.796: E/AndroidRuntime(19076): 	at android.os.Parcel.readException(Parcel.java:1276)
05-14 12:10:05.796: E/AndroidRuntime(19076): 	at android.net.IConnectivityManager$Stub$Proxy.getNetworkInfo(IConnectivityManager.java:392)
05-14 12:10:05.796: E/AndroidRuntime(19076): 	at android.net.ConnectivityManager.getNetworkInfo(ConnectivityManager.java:259)
05-14 12:10:05.796: E/AndroidRuntime(19076): 	at com.carouseldemo.main.MainActivity.isInternetOn(MainActivity.java:211)
05-14 12:10:05.796: E/AndroidRuntime(19076): 	at com.carouseldemo.main.MainActivity.onCreate(MainActivity.java:38)
05-14 12:10:05.796: E/AndroidRuntime(19076): 	at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
05-14 12:10:05.796: E/AndroidRuntime(19076): 	at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1615)
05-14 12:10:05.796: E/AndroidRuntime(19076): 	... 11 more
05-14 12:11:29.562: W/System.err(19234): 	at net.sourceforge.jtds.jdbc.ConnectionJDBC2.<init>(ConnectionJDBC2.java:311)

please help if posible...

[Swastik Dey]

The android manifest is probably missing the following permission

android.permission.ACCESS_NETWORK_STATE

[Suzzane Pinto]

i have given the permission still the same exception

[Deepak Bala]

Is the exception from the emulator ? If so, try wiping out user data for the emulator and restart it.

[Suzzane Pinto]

hi;
i tried on both emulator and my device...now im not getting any exception niethr getting any output...with the same link....
any useful example or link if shared would be great

thankyou

[Swastik Dey]

The given seems to be returning just a true/false value. Are you doing something based on that return value?

[Suzzane Pinto]

hi,
i solved it using these lines

TextView tv = new TextView(this);
ConnectivityManager cm = (ConnectivityManager)getSystemService(Context.CONNECTIVITY_SERVICE);

if ( cm.getNetworkInfo(cm.TYPE_MOBILE).isConnectedOrConnecting() ||
cm.getNetworkInfo(cm.TYPE_WIFI).isConnectedOrConnecting() )
tv.setText("Network available!");
else
tv.setText("No network available!");
setContentView(tv);

[Suzzane Pinto]

hi...i have a problem..
when i tried integrating this in other project where i have given both internet and access_network_state permisssion...still it gives me exception as

02-14 11:00:08.933: E/AndroidRuntime(1326): FATAL EXCEPTION: main
02-14 11:00:08.933: E/AndroidRuntime(1326): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.carouseldemo.main/com.carouseldemo.main.SplashActivity}: java.lang.SecurityException: ConnectivityService: Neither user 10035 nor current process has android.permission.ACCESS_NETWORK_STATE.
02-14 11:00:08.933: E/AndroidRuntime(1326): 	at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1647)
02-14 11:00:08.933: E/AndroidRuntime(1326): 	at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1663)
02-14 11:00:08.933: E/AndroidRuntime(1326): 	at android.app.ActivityThread.access$1500(ActivityThread.java:117)
02-14 11:00:08.933: E/AndroidRuntime(1326): 	at android.app.ActivityThread$H.handleMessage(ActivityThread.java:931)
02-14 11:00:08.933: E/AndroidRuntime(1326): 	at android.os.Handler.dispatchMessage(Handler.java:99)
02-14 11:00:08.933: E/AndroidRuntime(1326): 	at android.os.Looper.loop(Looper.java:123)
02-14 11:00:08.933: E/AndroidRuntime(1326): 	at android.app.ActivityThread.main(ActivityThread.java:3683)
02-14 11:00:08.933: E/AndroidRuntime(1326): 	at java.lang.reflect.Method.invokeNative(Native Method)
02-14 11:00:08.933: E/AndroidRuntime(1326): 	at java.lang.reflect.Method.invoke(Method.java:507)
02-14 11:00:08.933: E/AndroidRuntime(1326): 	at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
02-14 11:00:08.933: E/AndroidRuntime(1326): 	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
02-14 11:00:08.933: E/AndroidRuntime(1326): 	at dalvik.system.NativeStart.main(Native Method)
02-14 11:00:08.933: E/AndroidRuntime(1326): Caused by: java.lang.SecurityException: ConnectivityService: Neither user 10035 nor current process has android.permission.ACCESS_NETWORK_STATE.
02-14 11:00:08.933: E/AndroidRuntime(1326): 	at android.os.Parcel.readException(Parcel.java:1322)
02-14 11:00:08.933: E/AndroidRuntime(1326): 	at android.os.Parcel.readException(Parcel.java:1276)
02-14 11:00:08.933: E/AndroidRuntime(1326): 	at android.net.IConnectivityManager$Stub$Proxy.getNetworkInfo(IConnectivityManager.java:368)
02-14 11:00:08.933: E/AndroidRuntime(1326): 	at android.net.ConnectivityManager.getNetworkInfo(ConnectivityManager.java:259)
02-14 11:00:08.933: E/AndroidRuntime(1326): 	at com.carouseldemo.main.SplashActivity.chkConnectionStatus(SplashActivity.java:113)
02-14 11:00:08.933: E/AndroidRuntime(1326): 	at com.carouseldemo.main.SplashActivity.onCreate(SplashActivity.java:45)
02-14 11:00:08.933: E/AndroidRuntime(1326): 	at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
02-14 11:00:08.933: E/AndroidRuntime(1326): 	at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1611)

why this exception coming when i have permissions??