【发布时间】：2017-01-31 07:32:05
【问题描述】：
我想根据与任何列表视图项目内容匹配的特定输入字符串更改列表视图项目的顺序，并且该项目位于列表视图的顶部。我已经很努力了，但到现在都没有成功。如果有其他问题请询问。
这是从服务器获取数据的代码：
这里 date2 是我要比较的字符串输入
private void caladata() {
// showing refresh animation before making http call
swipeRefreshLayout.setRefreshing(false);
// Volley's json array request object
StringRequest stringRequest = new StringRequest(Request.Method.POST, CALENDAR_DATA,
new Response.Listener < String > () {
@Override
public void onResponse(String response) {
// Log.d(TAG, response.toString());
// hidePDialog();
JSONObject object = null;
try {
object = new JSONObject(response);
} catch (JSONException e) {
e.printStackTrace();
}
JSONArray jsonarray = null;
try {
jsonarray = object.getJSONArray("Table");
} catch (JSONException e) {
e.printStackTrace();
}
Calenndar_Model movie = new Calenndar_Model();
for (int i = 0; i < jsonarray.length(); i++) {
try {
JSONObject obj = jsonarray.getJSONObject(i);
movie.setUserid(obj.getString("userid"));
movie.setHost(obj.getString("eventname"));
String str = obj.getString("eventdate").replaceAll("\\D+","");
String upToNCharacters = str.substring(0, Math.min(str.length(), 13));
DateFormat timeZoneFormat = new SimpleDateFormat("dd-MM-yyyy HH:mm:ss");
timeZoneFormat.setTimeZone(TimeZone.getTimeZone("GMT-8"));
Date time = new Date(Long.parseLong(upToNCharacters));
// System.out.println(time);
movie.setDate(String.valueOf(timeZoneFormat.format(time)));
movie.setColor(obj.getString("eventcolor"));
movie.setAutoid(obj.getString("autoid"));
// Toast.makeText(getApplicationContext(), "server data respone", Toast.LENGTH_LONG).show();
int index=calList.indexOf(date2);
calList.add(movie);
calList.remove(date2);
calList.add(0, movie);
} catch (JSONException e) {
// Log.e(TAG, "JSON Parsing error: " + e.getMessage());
}
}
// notifying list adapter about data changes
// so that it renders the list view with updated data
adapter.notifyDataSetChanged();
// listView.smoothScrollToPositionFromTop(selectedPos,0,300);
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
// VolleyLog.d(TAG, "Error: " + error.getMessage());
// hidePDialog();
}
}) {
@Override
protected Map < String, String > getParams() {
Map < String, String > params = new HashMap < String, String > ();
params.put("clientid", get1);
return params;
}
};
// Adding request to request queue
MyApplication.getInstance().addToRequestQueue(stringRequest);
}
这是我的适配器类：
public class CalendarListAdapter extends BaseAdapter {
private Activity activity;
private LayoutInflater inflater;
private List<Calenndar_Model> movieList;
public CalendarListAdapter(Activity activity, List<Calenndar_Model> movieList) {
this.activity = activity;
this.movieList = movieList;
}
public void swapList(List<Calenndar_Model> movieList) {
this.movieList = movieList;
notifyDataSetChanged();
}
@Override
public int getCount() {
return movieList.size();
}
@Override
public Object getItem(int location) {
return movieList.get(location);
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
if (inflater == null)
inflater = (LayoutInflater) activity
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
if (convertView == null)
convertView = inflater.inflate(R.layout.calendar_listrow, null);
ImageView serial = (ImageView) convertView.findViewById(R.id.serial);
TextView title = (TextView) convertView.findViewById(R.id.title);
TextView date1 = (TextView) convertView.findViewById(R.id.date1);
title.setText(movieList.get(position).getHost());
date1.setText(movieList.get(position).getDate());
return convertView;
}
}
模型类：
public class Calenndar_Model {
private String host, date,userid,color,autoid;
//private double rating;
public Calenndar_Model() {
}
public Calenndar_Model(String host,String date,String userid,String color,String autoid) {
this.host = host;
this.date = date;
this.userid = userid;
this.color = color;
this.autoid = autoid;
}
public String getHost() {
return host;
}
public void setHost(String host) {
this.host = host;
}
public String getDate() {
return date;
}
public void setDate(String date) {
this.date = date;
}
public String getUserid() {
return userid;
}
public void setUserid(String userid) {
this.userid = userid;
}
public String getColor() {
return color;
}
public void setColor(String color) {
this.color = color;
}
public String getAutoid() {
return autoid;
}
public void setAutoid(String autoid) {
this.autoid = autoid;
}
}
【问题讨论】：
标签： java android listview android-adapter android-json