how to check internet connection in asynctask in android

Question

@Override
    protected void onCreate(Bundle savedInstanceState) {
        // TODO Auto-generated method stub
        super.onCreate(savedInstanceState);
        req         


        

Answer 1

if(CheckNetwork){
new GetVideoUrlAsyn().execute();
}else{
// Check internet connection
}

and

private boolean CheckNetwork() {
    ConnectivityManager conMgr = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
    if (conMgr.getActiveNetworkInfo() != null
            && conMgr.getActiveNetworkInfo().isAvailable()
            && conMgr.getActiveNetworkInfo().isConnected()) {
        return true;
    } else {
        return false;
    }

}

Answer 2

You should use a broadcast receiver as mentioned in other SO answers, but since you have asked how to do this otherwise, here you go:

 * Checks for an existing network connectivity
 * 
 * @param context
 *            The {@link Context} which is needed to tap
 *            {@link Context#CONNECTIVITY_SERVICE}
 * @return True if network connection is available
 */
public static boolean isNetworkAvailable(Context context) {
    ConnectivityManager connectivity = (ConnectivityManager) context
            .getSystemService(Context.CONNECTIVITY_SERVICE);

    if (connectivity == null) {
        return false;
    } else {
        NetworkInfo[] info = connectivity.getAllNetworkInfo();
        if (info != null) {
            for (int i = 0; i < info.length; i++) {
                if (info[i].getState() == NetworkInfo.State.CONNECTED) {
                    return true;
                }
            }
        }
    }
    return false;
}

Will need additional permission to be specified in the manifest file

Answer 3

check internet before execute asyncTask

if(checkNetwork)
{
new GetVideoUrlAsyn().execute();    
}
else
{
 // do stuff
}

Answer 4

Check network connectivity before executing AsyncTask,

if(isNetworkAvailable(this))
{
new GetVideoUrlAsyn().execute();
}

and this is the method definition,

    public boolean isNetworkAvailable(Context ctx)
{
    ConnectivityManager cm = (ConnectivityManager)ctx.getSystemService(Context.CONNECTIVITY_SERVICE);
    NetworkInfo netInfo = cm.getActiveNetworkInfo();
    if (netInfo != null && netInfo.isConnectedOrConnecting()&& cm.getActiveNetworkInfo().isAvailable()&& cm.getActiveNetworkInfo().isConnected()) 
    {
        return true;
    }
    else
    {
        return false;
    }
}

do something like this inside your method callhttppost_numvaluepair(URL, nameValuePairs) of WebServiceCall class,

HttpParams basicparams = new BasicHttpParams();
URI uri = new URI(url);
HttpPost method = new HttpPost(uri);
int timeoutConnection = 60000;//set your timeout period
HttpConnectionParams.setConnectionTimeout(basicparams,
        timeoutConnection);
DefaultHttpClient client = new DefaultHttpClient(basicparams);
    //and then rest of your code

Note: Don't forget to put the permission in manifest file,

<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />