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POParsing JSON in Android 2.3 fails after getting it from server
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  1. POParsing JSON in Android 2.3 fails after getting it from server
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    copied!<p>I have an AsyncTask that downloads a JSON string and parses the JSON:</p> <pre><code>private class GetHttpData extends AsyncTask&lt;Void, Void, Void&gt; { @Override protected Void doInBackground(Void... params) { String result = null; try { result = makeHttpRequest(HOST + "/menu_test.php"); Log.v(TAG, result); jsonToDB(result); } catch (Exception e) { Log.e(TAG, "", e); } return null; } } </code></pre> <p>makeHttpRequest() is:</p> <pre><code>public String makeHttpRequest(String Url) throws HttpException, IOException { String data = null; HttpPost post = new HttpPost(Url); HttpParams httpParams = new BasicHttpParams(); // setting some params ... HttpClient client = new DefaultHttpClient(httpParams); try { HttpResponse response = client.execute(post); int status = response.getStatusLine().getStatusCode(); if (status == HttpStatus.SC_OK) { HttpEntity entity = response.getEntity(); data = EntityUtils.toString(entity, "UTF-8"); // #1 } else { throw new HttpException(); } } catch (HttpException e) { throw e; } catch (ConnectTimeoutException e) { throw e; } catch (ClientProtocolException e) { throw e; } catch (IOException e) { throw e; } finally { client.getConnectionManager().shutdown(); } return data; } </code></pre> <p>jsonToDB is:</p> <pre><code>private void jsonToDB(String json) throws JSONException, SQLiteException { try { JSONArray jArray = new JSONArray(json); int jLength = jArray.length(); for (int i = 0; i &lt; jLength; i++) { JSONObject category = jArray.getJSONObject(i); JSONArray dishes = category.getJSONArray(JSON_CATEGORY_DISHES); int dishesLength = dishes.length(); for (int j = 0; j &lt; dishesLength; j++) { JSONObject dish = dishes.getJSONObject(j); Log.v(TAG, dish.getString(JSON_DISH_NUMBER)); } } } catch (JSONException e) { Log.e(TAG, "Error parsing JSON data" + e.toString()); throw e; } } </code></pre> <p>And menu_test.php prints this line:</p> <pre><code>[ {"catnumber":0, "catname":"Japanese", "dishes":[ { "number":"39", "name":"sushi", "content":"rice and fish", "price":6.99, "img":"imgurl"} ] } ] </code></pre> <p>Everything works just fine in Android 4.0 + but in 2.3 I get some strange behavior:</p> <pre><code>08-02 15:24:22.675: V/test(947): ?[{"catnumber":0,"catname":"Japanese","dishes": [{"number":"39","name":"sushi","content":"rice and fish","price":6.99,"img":"imgurl"}]}] 08-02 15:24:22.675: E/test(947): Error parsing JSON dataorg.json.JSONException: Value ? of type java.lang.String cannot be converted to JSONArray </code></pre> <p>A symbol gets added to the front that I can't even copy. If I remove the UTF-8 encoding from Line #1 in makeHttpRequest() even more jiberish gets added to the front:</p> <pre><code>08-02 15:27:58.914: V/test(981): [{"catnumber":0,"catname":"Japanese","dishes":[{"number":"39","name":"sushi","content":"rice and fish","price":6.99,"img":"imgurl"}]}] </code></pre> <p>I can easily solve this by adding:</p> <pre><code> while(!json.startsWith("[")) { json = json.substring(1); } </code></pre> <p>But still: <strong>Why is this hapenning? How do I solve this? Why is it only happenning in android 2.3 but not 4+?</strong></p>
 

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