Unknown host exception Android

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Unknown host exception Android

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#1 by (0 votes)
#2 by (-1 votes)

1

My app consumes a web service every time it detects an entry to a Geofence, but sometimes the mobile data is off or is wrong because of the signal and when sending sends a UnknownHostException , but I would like it when I have it again data signal or Wifi send that data to the web service automatically. Is there any way to do it?

The connection I'm making with HttpUrLConnection :

        URL obj;
        obj = new URL(preURL);

        HttpURLConnection con = (HttpURLConnection) obj.openConnection();
        con.setRequestMethod("GET");
        con.setRequestProperty("User-Agent", USER_AGENT);
        con.setRequestProperty("Accept-Charset", "UTF-8");
       con.setConnectTimeout(60*1*1000);
        int responseCode = con.getResponseCode();
        Log.d("responseCode", "responseCode -->" + responseCode);
        BufferedReader in = new BufferedReader(new InputStreamReader(con.getInputStream()));
        String inputLine;
        StringBuilder response = new StringBuilder();

        while ((inputLine = in.readLine()) != null) {
            response.append(inputLine);
        }
        in.close();

        if (response.toString() != null) {
            result = response.toString();
            Log.i(LOG_TAG, "RESPUESTA=" + result);
        }

    }catch (SocketTimeoutException e) {
        LogFile.createLogFile(e+utils.getCurrentDate(), this.getClass().getSimpleName() + "_" + e);
        Log.v("Exepcion", "Se agoto el tiempo");
        Log.e(LOG_TAG, "ERROR - (SocketTimeoutException) No Se logro enviar log...");
        Log.e(LOG_TAG, e.getMessage());
        e.printStackTrace();
        return "";

    } catch (MalformedURLException e) {
        LogFile.createLogFile(utils.getCurrentDate() + e , this.getClass().getSimpleName() + "_" + e);
        Log.e(LOG_TAG, "ERROR - (MalformedURLException) No Se logro enviar log...");
        Log.e(LOG_TAG, e.getMessage());
        e.printStackTrace();
        return "";
    } catch (ProtocolException e) {
        LogFile.createLogFile(utils.getCurrentDate() + e, this.getClass().getSimpleName() + "_" + e);
        Log.e(LOG_TAG, "ERROR - (ProtocolException) No Se logro enviar log...");
        Log.e(LOG_TAG, e.getMessage());
        e.printStackTrace();
        return "";
    } catch (IOException e) {
        LogFile.createLogFile(utils.getCurrentDate()+e, this.getClass().getSimpleName() + "_" + e);
        Log.e(LOG_TAG, "ERROR - (IOException) No Se logro enviar log...");
        //Log.e(LOG_TAG, e.getMessage());
        e.printStackTrace();
        return "";
    } finally {
        Log.e(LOG_TAG, "FINAL...");
    }

java android

asked by AndresLeon 13.09.2017 в 05:17

source

2 answers

-1

Based on your message:

Unknown host exception

This error usually refers to Android that your url does not have a protocol defined and also is not valid, for example, these would be valid urls (assuming they are accessible):

http://www.andresleon.com/android
http://www.andresleon.com

but you are not:

www.andresleon.con/android
andresleon.con/android
jorgesysprueba.agencytoots.com

so when trying to use them you would get the error:

java.net.UnknownHostException Unable to resolve host "jorgesysprueba.agencytoots.com": No address associated with hostname

Ensure that the value of preURL actually has the protocol http:// or https:// and that the domain is valid! .

answered by 13.09.2017 в 17:30

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score 0 · Accepted Answer

Your question is a bit long, so I'll summarize how I would do it:

Capturing the UnknowHostException would save that data in some local database, I recommend using realm , you can see the documentation here link It's quite simple to use.
In your object where you save data from the local database add a boolean status to see if it has already been synchronized or not
you can use this android broadcast to know when the connection status has changed and send the data to the database.

<receiver android:name=".TURECIBIDOR">
   <intent-filter>
      <action android:name="android.net.conn.CONNECTIVITY_CHANGE" />
   </intent-filter>
</receiver>
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />

Another way a little simpler would be to leave a button to synchronize data in your Toolbar and send your realm object where the boolean estado = false . I also recommend using retrofit to get the webservice and its possible errors in a much more simple and efficient link seems extensive but actually you adapt fast

I hope you do well with everything.