私自身のプロジェクトの問題に関するいくつかの問題を取得するために、ここに投稿しています。
AndroidアプリケーションからWebサービスに接続し、この情報を適切なソースに取得したいと思います。私はJSONファイル（これは良いです）を使用していますが、JSONオブジェクトのみが含まれています。
私はこのかなり良いソースを使用しました（彼の例で非常にうまく機能しています）：http ：//www.androidhive.info/2012/01/android-json-parsing-tutorial/
あなたは私のJSONファイルを見ることができます：
[
{
"id": "2",
"title": "Printemps du cinema",
"content": "Decouvrez plein de nouveaux films durant la semaine du printemps du cinema.",
"date": "2012-07-04",
"author": "Nicolas Jeannin",
"zone": "Mandelieu",
"area": "Cannes"
},
{
"id": "4",
"title": "Festival de Cannes",
"content": "Venez assister a la montee des marches du prestigieux festival !",
"date": "2012-05-26",
"author": "Nicolas Teboul",
"zone": "Cannes",
"area": "Cannes"
}
]
私は彼のメソッドで実行しようとしましたが、1つの要素で構成されるJSON配列を使用しました。私はいつも同じようなエラーがあります：
"データの解析エラーorg.json.Excption：Value [{"content "：".........}]..JSONObjectに変換できません。 "
あなたは以下の私の活動を見ることができます：
public class AndroidJSONParsingActivity extends ListActivity
{
// url to make request
private static String url = "http://developer.prixo.fr/API/GetEvents?zone=8";
//private static String url = "http://twitter.com/statuses/public_timeline.json";
//private static String url = "http://api.androidhive.info/contacts/";
//JSON names
private static final String TAG_content = "content";
private static final String TAG_zone = "zone";
private static final String TAG_id = "id";
private static final String TAG_area = "area";
private static final String TAG_title = "title";
private static final String TAG_date = "date";
private static final String TAG_author = "author";
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
// Hashmap for ListView
ArrayList<HashMap<String, String>> newsList = new ArrayList<HashMap<String, String>>();
JSONArray event = null;
// Creating JSON Parser instance
JSONParser jParser = new JSONParser();
// getting JSON string from URL
JSONObject json = jParser.getJSONFromUrl(url);
try {
// Getting Array of Contacts
event = json.getJSONArray("");
JSONObject c = event.getJSONObject(0);
// Storing each json item in variable
String id = c.getString(TAG_id);
String title = c.getString(TAG_title);
String content = c.getString(TAG_content);
String date = c.getString(TAG_date);
String author = c.getString(TAG_author);
String zone = c.getString(TAG_zone);
String area = c.getString(TAG_area);
// creating new HashMap
HashMap<String, String> map = new HashMap<String, String>();
// adding each child node to HashMap key => value
map.put(TAG_content, content);
map.put(TAG_title, title);
map.put(TAG_author, author);
// adding HashList to ArrayList
newsList.add(map);
}
catch (JSONException e) {
e.printStackTrace();
}
/**
* Updating parsed JSON data into ListView
* */
ListAdapter adapter = new SimpleAdapter(this, newsList,R.layout.list_item,new String[] { TAG_content, TAG_title, TAG_author }, new int[] {R.id.name, R.id.email, R.id.mobile });
setListAdapter(adapter);
// selecting single ListView item
ListView lv = getListView();
// Launching new screen on Selecting Single ListItem
lv.setOnItemClickListener(new OnItemClickListener()
{
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
// getting values from selected ListItem
String name = ((TextView) view.findViewById(R.id.name)).getText().toString();
String cost = ((TextView) view.findViewById(R.id.email)).getText().toString();
String description = ((TextView) view.findViewById(R.id.mobile)).getText().toString();
// Starting new intent
Intent in = new Intent(getApplicationContext(), SingleMenuItemActivity.class);
in.putExtra(TAG_content, name);
in.putExtra(TAG_title, cost);
in.putExtra(TAG_author, description);
startActivity(in);
}
});
}
}
そしてこれはJSONParserです：
package com.androidhive.jsonparsing;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.UnsupportedEncodingException;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.json.JSONException;
import org.json.JSONObject;
import android.util.Log;
public class JSONParser {
static InputStream is = null;
static JSONObject jObj = null;
static String jsonstr = "";
// constructor
public JSONParser() {
}
public JSONObject getJSONFromUrl(String url) {
// Making HTTP request
try {
// defaultHttpClient
DefaultHttpClient httpClient = new DefaultHttpClient();
HttpPost httpPost = new HttpPost(url);
//HttpGet httpGet = new HttpGet(url);
//HttpResponse httpResponse = httpClient.execute(httpGet);
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();
jsonstr = 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(jsonstr);
} catch (JSONException e) {
Log.e("JSON Parser", "Error parsing de Mon fichier: " + e.toString());
}
// return JSON String
return jObj;
}
}
みんなを助けてくれてありがとう。:)