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POAndroid java trouble parsing JSON
 

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  1. POAndroid java trouble parsing JSON
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    <p>I've parsed some simple json in the past but this one is giving me a bit more trouble. I'm trying to get data from Wikipedia's "on this day in history"</p> <p><a href="http://en.wikipedia.org/w/api.php?format=json&amp;action=query&amp;titles=September_17&amp;rvprop=content&amp;prop=revisions" rel="nofollow">Example URL with JSON output</a></p> <p><a href="http://en.wikipedia.org/wiki/September_17" rel="nofollow">Actual URL in regular HTML</a></p> <p>Now if you pop the JSON URL into: <a href="http://jsonlint.com/" rel="nofollow">http://jsonlint.com/</a> to get a breakdown the first bit of trouble I have is after the object after pages in this case "27993" will always be different so how am I to fetch this if I don't know the name?</p> <p>For testing purposes I have this code so far:</p> <pre><code>JSONObject json = new JSONObject(result); input.close(); JSONObject json2 = new JSONObject(json.getString("query").toString()); JSONObject json3 = new JSONObject(json2.getString("pages").toString()); JSONObject json4 = new JSONObject(json3.getString("27993").toString()); JSONArray contacts = json4.getJSONArray("revisions"); StringBuilder builder = new StringBuilder(); builder.append(contacts.getString(0)); return builder.toString(); </code></pre> <p>That returns everything in the revisions array which leads me to my next question...is there an easy method to parse that output?</p> <p><strong>EDIT: Revised code that solves issue #1 Now about parsing that output?</strong></p> <pre><code> JSONObject json = new JSONObject(result); input.close(); JSONObject json2 = new JSONObject(json.getString("query").toString()); JSONObject json3 = new JSONObject(json2.getString("pages").toString()); Iterator i = json3.keys(); JSONObject j = null; while (i.hasNext()) { try { String key = i.next().toString(); j = json3.getJSONObject(key); } catch (JSONException e) { e.printStackTrace(); } } JSONArray contacts = j.getJSONArray("revisions"); StringBuilder builder = new StringBuilder(); builder.append(contacts.getString(0)); return builder.toString(); </code></pre> <p><strong>The 2nd part of the question is there a simple solution to parsing such output. Here is a snip:</strong></p> <blockquote> <p>":"{{pp-move-indef}}{{September calendar|float=right}}\n{{ThisDateInRecentYears}}\n{{Day}}\n\n==Events==\n* [[456]] &ndash; [[Remistus]], Roman general (''[[magister militum]]''), is [[Siege|besiege]]d with a [[Goths|Gothic]] force at [[Ravenna]] and later executed in the Palace ''in Classis'', outside the city. \n*[[1111]] &ndash; Highest Galician nobility led by [[Pedro Fr\u00f3ilaz de Traba]] and the bishop [[Diego Gelm\u00edrez]] crown [[Alfonso VII of Le\u00f3n and Castile|Alfonso VII]] as \"[[kingdom of Galicia|King of Galicia]]\".\n*[[1176]] &ndash; The [[Battle of Myriokephalon]] is fought.\n*[[1462]] &ndash; The [[Battle of \u015awiecino]] (also known as the Battle of \u017barnowiec) is fought during [[Thirteen Years' War (1454\u201366)|Thirteen Years' War]].\n*[[1577]] &ndash; The [[Peace of Bergerac]] is signed between [[Henry III of France]] and the [[Huguenots]].\n*[[1630]] &ndash; The city of [[Boston]]</p> </blockquote>
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    1. COhttp://developer.android.com/reference/org/json/JSONObject.html#keys()
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    2. COThanks! very helpful
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    3. COi don't get your second question ?
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