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POApp crashing on network issue/server down
 

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  1. POApp crashing on network issue/server down
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    <p>I am using Asynctask to extract some data from the web and use it in further calculations. I have implemented a connectivity check as well, it returns false if there is no connection but It crashes if there is internet connection and "the server is down". I want to display a dialog to notify the user that their internet is experiencing problems. But I can't seem to get it right. Please help. Thanks in advance. :)</p> <pre><code>HttpClient client; String URL, re, element; JSONObject json, getjson; int i, j, statusCode; HttpGet httpget; HttpResponse response; HttpEntity entity; InputStream is; BufferedReader reader; StringBuilder sb, sb1; SharedPreferences getinput, passjson; ProgressDialog pd; Context context = DataRetrieve.this; @Override protected void onCreate(Bundle savedInstanceState) { // TODO Auto-generated method stub super.onCreate(savedInstanceState); requestWindowFeature(Window.FEATURE_NO_TITLE); getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN); setContentView(R.layout.dataretrieve); // Bundle gotBasket = getIntent().getExtras(); // URL = gotBasket.getString("key"); getinput = getSharedPreferences("input", 0); URL = getinput.getString("key", null); if (!isNetworkReachable()) { AlertDialog.Builder builder = new AlertDialog.Builder(context); builder.setTitle("No Network Connection"); builder.setMessage("The Network is unavailable. Please check your internet connection."); builder.setPositiveButton("Settings", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { // TODO Auto-generated method stub Intent m = new Intent( android.provider.Settings.ACTION_SETTINGS); startActivity(m); } }); builder.setNegativeButton("Cancel", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface arg0, int arg1) { // TODO Auto-generated method stub Intent n = new Intent(DataRetrieve.this, OpTilt.class); startActivity(n); } }); builder.create().show(); } else { Read r = new Read(); r.execute(); } } private boolean isNetworkReachable() { // TODO Auto-generated method stub ConnectivityManager mManager = (ConnectivityManager) context .getSystemService(Context.CONNECTIVITY_SERVICE); NetworkInfo current = mManager.getActiveNetworkInfo(); if (current != null &amp;&amp; current.isConnectedOrConnecting()) { return true; } return false; } public class Read extends AsyncTask&lt;String, Integer, String&gt; { @Override protected void onPreExecute() { pd = new ProgressDialog(DataRetrieve.this); pd.setTitle("Processing..."); pd.setMessage("Please wait."); pd.setCancelable(false); pd.setIndeterminate(true); pd.show(); } @Override protected String doInBackground(String... params) { // TODO Auto-generated method stub re = null; is = null; json = null; try { httpget = new HttpGet(URL); client = new DefaultHttpClient(); response = client.execute(httpget); entity = response.getEntity(); is = entity.getContent(); statusCode = response.getStatusLine().getStatusCode(); } catch (Exception e) { statusCode = -1; Log.e("log_tag", "Erro http " + e.toString()); } if (statusCode == 200) { try { reader = new BufferedReader(new InputStreamReader(is, "UTF-8"), 8); sb = new StringBuilder(); String line = null; while ((line = reader.readLine()) != null) { sb.append(line + "\n"); } is.close(); re = sb.toString(); } catch (Exception e) { Log.e("log_tag", "Erro conversão " + e.toString()); } } return re; } @Override protected void onPostExecute(String result) { // TODO Auto-generated method stub pd.dismiss(); try { json = new JSONObject(result); getjson = json.getJSONObject("Solar"); String H[] = new String[getjson.length()]; for (i = 0, j = 1; i &lt; getjson.length(); i++, j++) { H[i] = getjson.getString("" + j); } SharedPreferences sendHm; sendHm = getSharedPreferences("parsedata", 0); SharedPreferences.Editor editor = sendHm.edit(); for (int k = 0; k &lt; H.length; k++) { editor.putString("Hm" + k, H[k]); } editor.commit(); Intent f = new Intent(DataRetrieve.this, Calculator.class); startActivity(f); /* * Bundle bundle = new Bundle(); bundle.putStringArray("key1", * H); Intent f = new Intent(DataRetrieve.this, * Calculator.class); f.putExtras(bundle); startActivity(f); */ } catch (JSONException e) { Log.e("log_tag", "Erro dados " + e.toString()); } } } @Override protected void onPause() { // TODO Auto-generated method stub super.onPause(); finish(); } } </code></pre>
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    1. PO
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    1. PTQuestion
    1. USrenupok92
    1. USrenupok92
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    1. This table or related slice is empty.
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    1. PO
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    1. COwhat`s wrong? do you get any errors? All the same the else-if branch in isNetworkReachable() is not necessary
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      1. POApp crashing on network issue/server down
      1. USBlackbelt
    2. COYou are right, I will remove it. The issue is that it only detects if network is enabled or not. I want to check if the network is even working or not. When the network goes down, the app shows a progress bar and then crashes.
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      1. POApp crashing on network issue/server down
      1. USrenupok92
    3. COI have edited the code and removed the else-if branch. But my issue remains.
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      1. POApp crashing on network issue/server down
      1. USrenupok92
 

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