我想按最高值对我的数组(从 JSON 解析)进行排序。我想做一个高分榜。
我的 JSON 文件:
[
{
"naam": "Peter",
"wedstrijden": "10",
"doelpunten": "4"
},
{
"naam": "Harry",
"wedstrijden": "8",
"doelpunten": "6"
}
]
我必须将哪些代码按“doelpunten”对我的列表视图进行排序?或者这是不可能的?这是我到目前为止的代码:
TopscoreListAdapter.java:
public class TopscoreListAdapter extends ArrayAdapter<Topscore> {
Context context;
List<Topscore> posities;
public TopscoreListAdapter(Context context, List<Topscore> posities) {
super(context,R.layout.layout_topscorelist, posities);
this.context = context;
this.posities = posities;
}
@Override
public View getView(int position, View convertView, ViewGroup parent)
{
TopscoreView view = (TopscoreView) convertView;
view = new TopscoreView(context);
view.setTopscore(posities.get(position));
return view;
}
Topscore.java:
public class Topscore {
String name;
String wedstrijden;
String doelpunten;
public Topscore(String name, String wedstrijden, String doelpunten) {
this.name = name;
this.wedstrijden = wedstrijden;
this.doelpunten = doelpunten;
}
public String GetName() {
return name;
}
public String GetWedstrijden() {
return wedstrijden;
}
public String GetDoelpunten() {
return doelpunten;
}
}
TopscoreFragment.java:
public class TopscoreFragment extends ListFragment {
private static final String url = "http://www...../spelers.json";
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View retView = inflater.inflate(R.layout.fragment_topscore, container,
false);
JsonTopscoreParser parser = new JsonTopscoreParser(url,
new OnTopscoreCompleteListener() {
@Override
public void onComplete(ArrayList<Topscore> topscore) {
// TODO Auto-generated method stub
TopscoreListAdapter adapter = new TopscoreListAdapter(
getActivity(), topscore);
TopscoreFragment.this.setListAdapter(adapter);
}
});
parser.execute();
return retView;
}
}
OnTopscoreCompleteListener.java:
public interface OnTopscoreCompleteListener {
void onComplete(ArrayList<Topscore> bedrijven);
}
JsonTopscoreParser.java:
public class JsonTopscoreParser extends AsyncTask<Void, Void, ArrayList<Topscore>> {
private String url;
private ArrayList<Topscore> bosmtiTopscore;
private OnTopscoreCompleteListener listener;
public JsonTopscoreParser(String url, OnTopscoreCompleteListener listener) {
this.listener = listener;
this.url = url;
bosmtiTopscore = new ArrayList<Topscore>();
}
public String readBosMtiFeed() {
StringBuilder builder = new StringBuilder();
HttpClient client = new DefaultHttpClient();
HttpGet httpGet = new HttpGet(url);
try {
HttpResponse response = client.execute(httpGet);
StatusLine statusLine = response.getStatusLine();
int statusCode = statusLine.getStatusCode();
if (statusCode == 200) {
HttpEntity entity = response.getEntity();
InputStream content = entity.getContent();
BufferedReader reader = new BufferedReader(
new InputStreamReader(content));
String line;
while ((line = reader.readLine()) != null) {
builder.append(line);
}
} else {
Log.e(JsonTopscoreParser.class.toString(), "Failed to download file");
}
} catch (ClientProtocolException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return builder.toString();
}
@Override
protected ArrayList<Topscore> doInBackground(Void... params) {
// TODO Auto-generated method stub
String readBosMtiFeed = readBosMtiFeed();
try {
JSONArray jsonArray = new JSONArray(readBosMtiFeed);
Log.i(JsonTopscoreParser.class.getName(),
"Number of entries " + jsonArray.length());
Topscore topscore;
for (int i = 0; i < jsonArray.length(); i++) {
JSONObject jsonObject = jsonArray.getJSONObject(i);
String naam = jsonObject.getString("naam");
String wedstrijden = jsonObject.getString("wedstrijden");
String doelpunten = jsonObject.getString("doelpunten");
topscore = new Topscore(naam, wedstrijden, doelpunten);
if (!bosmtiTopscore.contains(topscore)) {
bosmtiTopscore.add(topscore);
}
}
} catch (Exception e) {
e.printStackTrace();
}
return bosmtiTopscore;
}
@Override
protected void onPostExecute(ArrayList<Topscore> topscore) {
listener.onComplete(topscore);
ListProvider provider = new ListProvider();
provider.SetTopscore(topscore);
}
}
提前谢谢了!