android en utilisant les services web pour google finance api

Question

Je suis un débutant à android, et je suis vraiment confus quant à la façon de procéder pour google finance api via android. Quelqu'un peut-il me suggérer de bons articles à ce sujet? et aussi comment utiliser les services Web via Android. grâce

Answer 1

finance url api: "http://www.gummy-stuff.org/Yahoo-data.htm"

private static String convertStreamToString(InputStream is) { 
/* 
* To convert the InputStream to String we use the 
* BufferedReader.readLine() method. We iterate until the BufferedReader 
* return null which means there's no more data to read. Each line will 
* appended to a StringBuilder and returned as String. 
*/ 
BufferedReader reader = new BufferedReader(new InputStreamReader(is)); 
StringBuilder sb = new StringBuilder(); 

String line = null; 
try { 
    while ((line = reader.readLine()) != null) { 
     sb.append(line + "\n"); 
    } 
} catch (IOException e) { 
    e.printStackTrace(); 
} finally { 
    try { 
     is.close(); 
    } catch (IOException e) { 
     e.printStackTrace(); 
    } 
} 
return sb.toString(); 
} 

/* 
* This is a test function which will connects to a given rest service and 
* prints it's response to Android Log with labels "Praeda". 
*/ 
public static String[] connect(String url) { 
HttpClient httpclient = new DefaultHttpClient(); 
String[] str = new String[5]; 

// Prepare a request object 
HttpGet httpget = new HttpGet(url); 

// Execute the request 
HttpResponse response; 
try { 
    response = httpclient.execute(httpget); 
    // Examine the response status 
    Log.d(TAG, response.getStatusLine().toString()); 

    // Get hold of the response entity 
    HttpEntity entity = response.getEntity(); 
    // If the response does not enclose an entity, there is no need 
    // to worry about connection release 

    if (entity != null) { 

     // A Simple JSON Response Read 
     InputStream instream = entity.getContent(); 
     String result = convertStreamToString(instream); 
     result=result.replace("parseExchangeRate(", "").replace(");", ""); 
     Log.d(TAG, result); 

     // A Simple JSONObject Creation 
     JSONObject json = new JSONObject(result); 
     Log.d(TAG, "<jsonobject>\n" + json.toString() 
       + "\n</jsonobject>"); 

     // A Simple JSONObject Parsing 
     // JSONArray nameArray=json.names(); 
     // Log.i("query",nameArray.toString()); 
     // JSONObject query=json.getJSONObject("query"); 
     // Log.i("query",query.toString()); 
     // JSONArray results=query.getJSONArray("results"); 
     // Log.i("rslts",results.toString()); 
     // JSONArray quote=results.getJSONArray("quote"); 
     // JSONObject quote=results.getJSONObject("quote"); 
     // Log.i("quote",quote.toString()); 
     JSONObject query = json.getJSONObject("query"); 
     Log.d(TAG, query.toString()); 
     JSONObject results = query.getJSONObject("results"); 
     Log.d(TAG, results.toString()); 
     JSONObject quote = results.getJSONObject("row"); 
     Log.d(TAG, quote.toString()); 
     for (int i = 0; i < quote.length(); i++) { 

      // Log.i("Praedafor","<jsonname"+i+">\n"+nameArray.getString(i)+"\n</jsonname"+i+">\n" 
      // +"<jsonvalue"+i+">\n"+valArray.getString(i)+"\n</jsonvalue"+i+">"); 
      // JSONObject quotes = results.getJSONObject(i) 
      // .getJSONObject("quote"); 
      // Log,i 
      // Log.i("name",quote.getString("Name")); 
      // Log.i("name","pahunch"); 
      // Log.i("name",quote.getString("Symbol")); 

      // Log.i("name",quote.getString("DaysLow")); 

      // Log.i("name",quote.getString("DaysHigh")); 

      // Log.i("name",quote.getString("Open")); 

      // Log.i("name",quote.getString("PreviousClose")); 
      String symbol = quote.getString("rate"); 
      str[0] = symbol; 
      String dayslow = quote.getString("DaysLow"); 
      str[1]=dayslow; 
      // tv1.setText(quote.getString("DaysLow")); 
      str[2]= quote.getString("DaysHigh"); 
      str[3]= quote.getString("Open"); 
      str[4]= quote.getString("Change"); 
     } 

     // A Simple JSONObject Value Pushing 
     // json.put("execution-start-time", "sample value"); 
     Log.d(TAG, "<jsonobject>\n" + json.toString() 
       + "\n</jsonobject>"); 
     // Log.i("Praeda12",json.get("").toString()); 

     // Closing the input stream will trigger connection release 
     instream.close(); 
    } 

} catch (ClientProtocolException e) { 
    Log.d(TAG, "ClientProtocolException"); 
    e.printStackTrace(); 
} catch (IOException e) { 
    Log.d(TAG, "IOException " + e.getMessage()); 
    e.printStackTrace(); 
} catch (JSONException e) { 
    Log.d(TAG, "JSONException " + e.getMessage()); 
    e.getMessage(); 
} 
return str; 
}