JSON analyse dans la vue texte Android

Question

J'ai créé une fonction HTTP GET qui récupère la réponse de mon serveur et l'affiche en tant que JSON dans une vue texte.

Comment puis-je faire ce qui suit dans une chaîne pour être lu par mon textview.

{"response":"ok"} 

Voici ma requête HTTP GET

public class GetMethodEx { 

public String getInternetData() throws Exception { 


BufferedReader in = null; 
String data = null; 

try { 
    HttpClient client = new DefaultHttpClient(); 
    client.getConnectionManager().getSchemeRegistry().register(getMockedScheme()); 

    URI website = new URI("https://server.com:8443/login?username=hm&password=123"); 
    HttpGet request = new HttpGet(); 
    request.setURI(website); 
    HttpResponse response = client.execute(request); 
    response.getStatusLine().getStatusCode(); 

    in = new BufferedReader(new InputStreamReader(response.getEntity().getContent())); 
    StringBuffer sb = new StringBuffer(""); 
    String l = ""; 
    String nl = System.getProperty("line.separator"); 
    while ((l = in.readLine()) != null) { 
     sb.append(l + nl); 
    } 
    in.close(); 
    data = sb.toString(); 
    return data; 
} finally { 
    if (in != null) { 
     try { 
      in.close(); 
      return data; 
     } catch (Exception e) { 
      Log.e("GetMethodEx", e.getMessage()); 
     } 
    } 
} 

Answer 1

Utilisez le code ci-dessous pour analyser les données JSON.

JSONObject jObject; 
try { 
    jObject = new JSONObject(data); 
    String mResponse = jObject.getString("response"); 
    mTxtView1.setText(mResponse); 
} catch (JSONException e) { 
    // TODO Auto-generated catch block 
    e.printStackTrace(); 
} 

Answer 2

Je suppose que ce whould être quelque chose comme:

String json = "{\"response\":\"ok\"}"; 
JSONObject object = new JSONObject(json); 
String response = object.getString("response"); 
TextView view = findViewById(id); 
view.setText(response); 

check http://www.androidhive.info/2012/01/android-json-parsing-tutorial/

Answer 3

Utilisez un Json Parser.

//json parser for http get 
JSONParser jParser = new JSONParser(); 
// getting JSON string from URL 
JSONObject json = jParser.getJSONFromUrl(url); 
String result = json.optString("response", "default"); 

JSONParser.java

public class JSONParser { 
static InputStream is = null; 
static JSONObject jObj = null; 
static String json = ""; 
// constructor 
public JSONParser() { 
} 

public JSONObject getJSONFromUrl(String url) { 
    // Making HTTP request 
    try { 
     DefaultHttpClient httpClient = new DefaultHttpClient(); 
     HttpPost httpPost = new HttpPost(url); 
     HttpResponse httpResponse = httpClient.execute(httpPost); 
     HttpEntity httpEntity = httpResponse.getEntity(); 
     is = httpEntity.getContent(); 
    } catch (UnsupportedEncodingException e) { 
     e.printStackTrace(); 
    } catch (ClientProtocolException e) { 
     e.printStackTrace(); 
    } catch (IOException e) { 
     e.printStackTrace(); 
    } 

    try { 
     BufferedReader reader = new BufferedReader(new InputStreamReader(
       is, "iso-8859-1"), 8); 
     StringBuilder sb = new StringBuilder(); 
     String line = null; 
     while ((line = reader.readLine()) != null) { 
      sb.append(line + "\n"); 
     } 
     is.close(); 
     json = sb.toString(); 
    } catch (Exception e) { 
     Log.e("Buffer Error", "Error converting result " + e.toString()); 
    } 

    // try parse the string to a JSON object 
    try { 
     jObj = new JSONObject(json); 
    } catch (JSONException e) { 
     Log.e("JSON Parser", "Error parsing data " + e.toString()); 
    } 

    // return JSON String 
    return jObj; 
} 
} 

Answer 4

Essayez ceci:

try { 
      JSONObject jsonObject = new JSONObject(yourString); 
      String response = jsonObject.getString("response"); 
      textView.setText(response); 

    } catch (JSONException e) { 

     e.printStackTrace(); 
    }