connect check android.java

	public boolean isNetworkAvailable() {
		   Context context = getApplicationContext();
		   ConnectivityManager connectivity = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
		   if (connectivity == null) {
		      return true;
		   } 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;
		}