Verifica se o device está conectado na internet (3G ou WIFI).

hasConnection

public static boolean hasConnection(Context context) {
	try {
		ConnectivityManager cm = (ConnectivityManager)
		context.getSystemService(Context.CONNECTIVITY_SERVICE);
		if (cm.getNetworkInfo(ConnectivityManager.TYPE_MOBILE).isConnected()) {
				Log.i("hasConnection","Status de conexao 3G: " + cm.getNetworkInfo(ConnectivityManager.TYPE_MOBILE).isConnected());
				return true;
		} else if(cm.getNetworkInfo(ConnectivityManager.TYPE_WIFI).isConnected()){
				Log.i("hasConnection","Status de conexao Wifi: " + cm.getNetworkInfo(ConnectivityManager.TYPE_WIFI).isConnected());
				return true;
		} else {
				Log.i("hasConnection","Status de conexao Wifi: " + cm.getNetworkInfo(ConnectivityManager.TYPE_WIFI).isConnected());
				Log.i("hasConnection","Status de conexao 3G: " + cm.getNetworkInfo(ConnectivityManager.TYPE_MOBILE).isConnected());
				return false;
		}
	} catch (Exception e) {
			Log.e("hasConnection", "Exception hasConnection " + e.getMessage());
			return false;
	}
}