我正在尝试在列表视图中填充餐厅的名称
- 但是有一些错误
- 我已经提到了下面的代码
MainActivity.java
public class MainActivity extends Activity {
// url to make request
private static String url = "http://xxxxxxxx/";
// JSON Node names
private static final String TAG_RESTAURANTS = "restaurants";
private static final String TAG_RESTAURANT_ID = "restaurantID";
private static final String TAG_RESTAURANT_NAME = "restaurantNAME";
// Hashmap for ListView
ArrayList<HashMap<String, String>> RestaurantList = new ArrayList<HashMap<String, String>>();
// contacts JSONArray
JSONArray restaurants = null;
ProgressDialog progressDialog;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//Instantiating ProgressDialog with onCreate method
progressDialog=new ProgressDialog(MainActivity.this);
new ParsingAsync().execute();
}
private class ParsingAsync extends AsyncTask<Void, Void, Void>
{
@Override
protected void onPreExecute() {
// TODO Auto-generated method stub
super.onPreExecute();
progressDialog=ProgressDialog.show(MainActivity.this, "", "Please Wait", true, false);
}
@Override
protected Void doInBackground(Void... params) {
JSONObjParser jParser = new JSONObjParser();
JSONObject json = jParser.getJSONFromUrl(url);
try {
restaurants = json.getJSONArray(TAG_RESTAURANTS);
for(int i = 0; i < restaurants.length(); i++){
JSONObject c = restaurants.getJSONObject(i);
String id = c.getString(TAG_RESTAURANT_ID);
String name = c.getString(TAG_RESTAURANT_NAME);
HashMap<String, String> map = new HashMap<String, String>();
map.put(TAG_RESTAURANT_ID, id);
map.put(TAG_RESTAURANT_NAME, name);
RestaurantList.add(map);
}
} catch (JSONException e) {
e.printStackTrace();
}
return null;
}
@Override
protected void onPostExecute(Void result) {
// TODO Auto-generated method stub
super.onPostExecute(result);
progressDialog.dismiss();
ListAdapter adapter = new SimpleAdapter(this, RestaurantList,
R.layout.itemlistrow,
new String[] { TAG_RESTAURANT_NAME }, new int[] {
R.id.RestaurantNameID });
setListAdapter(adapter);
}
}
}
JSONObjParser.java
public class JSONObjParser {
static InputStream is = null;
static JSONObject jObj = null;
static String json = "";
// constructor
public JSONObjParser() {
}
public JSONObject getJSONFromUrl(String url) {
// Making HTTP request
try {
// defaultHttpClient
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;
}
}
itemlistrow.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_height="wrap_content"
android:layout_width="fill_parent">
<TextView
android:id="@+id/RestaurantNameID"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="age" android:textStyle="bold"
android:gravity="center"/>
</RelativeLayout>
编辑后
解决了一些错误，但仍然存在一些错误
Description Resource Path Location Type
The method setListAdapter(ListAdapter) is undefined for the type MainActivity.ParsingAsync MainActivity.java /FindMyBuffet/src/com/project/findmybuffet line 107 Java Problem
有任何想法吗，
谢谢