listview 滑动分页 contextmenu菜单用法
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自定义listview项:
contextmenu,长按选项唤出:
选择详情菜单:
选择编辑菜单:
滑动分页,当大滚动到最好一项时,自动加载下一页:
代码:
- package com.gk.view;
- import java.util.ArrayList;
- import java.util.HashMap;
- import java.util.Iterator;
- import java.util.List;
- import java.util.Map;
- import org.apache.http.NameValuePair;
- import org.apache.http.message.BasicNameValuePair;
- import android.app.Activity;
- import android.app.AlertDialog;
- import android.app.ProgressDialog;
- import android.content.DialogInterface;
- import android.content.DialogInterface.OnClickListener;
- import android.os.Bundle;
- import android.os.Handler;
- import android.os.Message;
- import android.view.ContextMenu;
- import android.view.ContextMenu.ContextMenuInfo;
- import android.view.LayoutInflater;
- import android.view.MenuItem;
- import android.view.View;
- import android.view.View.OnCreateContextMenuListener;
- import android.widget.AbsListView;
- import android.widget.AbsListView.OnScrollListener;
- import android.widget.AdapterView.AdapterContextMenuInfo;
- import android.widget.ListView;
- import android.widget.ProgressBar;
- import android.widget.SimpleAdapter;
- import android.widget.TextView;
- import android.widget.Toast;
- import com.gk.R;
- import com.gk.data.AnswerServiceHelper;
- import com.gk.data.TaskByPageHelper;
- import com.gk.data.UserDataServiceHelper;
- import com.gk.model.Health;
- public class taskView extends Activity implements OnCreateContextMenuListener,
- OnScrollListener {
- private View view;
- private ListView listview;
- private TextView cardid;
- private TextView recorder;
- private TextView consultationtype;
- private TextView consultationexpert;
- private TextView consultationcontent;
- private TextView answer;
- private TextView answer1;
- private TextView clientname;
- private AlertDialog selfdialog;
- private Health health;
- private ProgressBar progressBar;
- private ProgressDialog progressdialog;
- private int lastItem = 0;
- private SimpleAdapter adapter;
- private int page = 1;
- private int allpage = 1;
- private List<Health> heallist = new ArrayList<Health>();
- private List<Map<String, Object>> httpResult = new ArrayList<Map<String, Object>>();
- @Override
- protected void onCreate(Bundle savedInstanceState) {
- super.onCreate(savedInstanceState);
- // LayoutInflater inflater = (LayoutInflater)
- // getApplicationContext().getSystemService(LAYOUT_INFLATER_SERVICE);
- // view = inflater.inflate(R.layout.taskview, null);
- adapter = new SimpleAdapter(this, httpResult, R.layout.taskview,
- new String[] { "title", "info", "img" }, new int[] {
- R.id.title, R.id.info, R.id.img });
- listview = new ListView(this);
- listview.setAdapter(adapter);
- listview.setOnCreateContextMenuListener(this);
- listview.setOnScrollListener(this);
- setContentView(listview);
- dealData();
- }
- @Override
- public void onCreateContextMenu(ContextMenu menu, View v,
- ContextMenuInfo menuInfo) {
- menu.setHeaderTitle("详情菜单");
- menu.add(0, 0, 1, "查看详情");
- menu.add(0, 1, 2, "编辑解答");
- menu.add(0, 2, 3, "取消查看");
- }
- @Override
- public boolean onContextItemSelected(MenuItem item) {
- AdapterContextMenuInfo menuinfo = (AdapterContextMenuInfo) item
- .getMenuInfo();
- health = heallist.get(menuinfo.position);
- List<NameValuePair> params = new ArrayList<NameValuePair>();
- params.add(new BasicNameValuePair("iid", health.getIid().toString()));
- String host = UserDataServiceHelper.getHost();
- String uri = host + "/task.do?task=getHealthById";
- Bundle bundle = UserDataServiceHelper.getObjectByid(uri, params);
- if (item.getItemId() == 0) {
- if (bundle != null) {
- health = (Health) bundle.get("health");
- // 创建对话框
- LayoutInflater inflater = (LayoutInflater) getApplicationContext()
- .getSystemService(LAYOUT_INFLATER_SERVICE);
- view = inflater.inflate(R.layout.detail, null);
- // 设置
- cardid = (TextView) view.findViewById(R.id.cardid);
- recorder = (TextView) view.findViewById(R.id.recorder);
- consultationtype = (TextView) view
- .findViewById(R.id.consultationtype);
- consultationexpert = (TextView) view
- .findViewById(R.id.consultationexpert);
- consultationcontent = (TextView) view
- .findViewById(R.id.consultationcontent);
- answer = (TextView) view.findViewById(R.id.answer);
- clientname = (TextView) view.findViewById(R.id.clientname);
- cardid.setText(health.getCardid());
- recorder.setText(health.getRecorder());
- consultationtype.setText(health.getConsultationtype());
- consultationexpert.setText(health.getConsultationexpert());
- consultationcontent.setText(health.getConsultationcontent());
- answer.setText(health.getAnswer());
- clientname.setText(health.getName());
- AlertDialog.Builder ad = new AlertDialog.Builder(taskView.this);
- ad.setView(view);
- ad.setTitle("详情").create().show();
- Toast.makeText(this, page + "/" + allpage + "页",
- Toast.LENGTH_LONG).show();
- }
- }
- if (item.getItemId() == 1) {
- if (bundle != null) {
- health = (Health) bundle.get("health");
- // 创建对话框
- LayoutInflater inflater = (LayoutInflater) getApplicationContext()
- .getSystemService(LAYOUT_INFLATER_SERVICE);
- view = inflater.inflate(R.layout.detail, null);
- // 设置
- cardid = (TextView) view.findViewById(R.id.cardid);
- recorder = (TextView) view.findViewById(R.id.recorder);
- consultationtype = (TextView) view
- .findViewById(R.id.consultationtype);
- consultationexpert = (TextView) view
- .findViewById(R.id.consultationexpert);
- consultationcontent = (TextView) view
- .findViewById(R.id.consultationcontent);
- answer = (TextView) view.findViewById(R.id.answer);
- answer.setVisibility(View.INVISIBLE);// 设置不可见
- answer1 = (TextView) view.findViewById(R.id.answer1);
- answer1.setVisibility(View.VISIBLE);// 设置可见
- clientname = (TextView) view.findViewById(R.id.clientname);
- cardid.setText(health.getCardid());
- recorder.setText(health.getRecorder());
- consultationtype.setText(health.getConsultationtype());
- consultationexpert.setText(health.getConsultationexpert());
- consultationcontent.setText(health.getConsultationcontent());
- answer1.setText(health.getAnswer());
- clientname.setText(health.getName());
- AlertDialog.Builder ad = new AlertDialog.Builder(taskView.this);
- ad.setView(view);
- ad.setTitle("解答");
- selfdialog = ad.create();
- selfdialog.setButton("提交", new OnClickListener() {
- @Override
- public void onClick(DialogInterface dialog, int which) {
- String host = UserDataServiceHelper.getHost();
- String uri = host + "/task.do?task=updateAnswer";
- String answer = answer1.getText().toString();
- String iid = health.getIid().toString();
- List<NameValuePair> params = new ArrayList<NameValuePair>();
- params.add((new BasicNameValuePair("answer", answer)));
- params.add((new BasicNameValuePair("iid", iid)));
- String state = AnswerServiceHelper.updateAnswer(uri,
- params);
- Toast.makeText(taskView.this, "提示:" + state,
- Toast.LENGTH_LONG).show();
- }
- });
- selfdialog.setButton2("取消", new OnClickListener() {
- @Override
- public void onClick(DialogInterface dialog, int which) {
- selfdialog.cancel();
- }
- });
- selfdialog.show();
- }
- }
- return super.onContextItemSelected(item);
- }
- private static Bundle bundle;
- public Bundle getBundle() {
- bundle = getIntent().getExtras();
- return bundle;
- }
- private List<Map<String, Object>> getMapData(List<Health> httpResult) {
- List<Map<String, Object>> list = new ArrayList<Map<String, Object>>();
- for (Iterator<Health> it = httpResult.iterator(); it.hasNext();) {
- Map<String, Object> map = new HashMap<String, Object>();
- Health health = (Health) it.next();
- map.put("title", health.getName());
- map.put("info", health.getConsultationexpert());
- map.put("img", R.drawable.ic_launcher);
- list.add(map);
- }
- return list;
- }
- public List<Health> getData(int page) {
- String overflag = getIntent().getStringExtra("overflag");
- String consultationexpert = getIntent().getStringExtra(
- "consultationexpert");
- List<NameValuePair> params = new ArrayList<NameValuePair>();
- params.add(new BasicNameValuePair("overflag", overflag));
- params.add(new BasicNameValuePair("consultationexpert",
- consultationexpert));
- params.add(new BasicNameValuePair("page", String.valueOf(page)));
- TaskByPageHelper task = new TaskByPageHelper();
- String host = UserDataServiceHelper.getHost();
- String uri = host + "/task.do?task=getTask";
- Bundle bundle = task.getTask(uri, params);
- page = Integer.valueOf(bundle.getString("page"));
- allpage = Integer.valueOf(bundle.getString("allpage"));
- List<Health> healist = (List<Health>) bundle.get("list");
- return healist;
- }
- private void dealData() {
- List<Health> data = getData(this.page);
- // heallist =data;
- List<Map<String, Object>> a = getMapData(data);
- for (int i = 0, size = a.size(); i < size; i++) {
- httpResult.add(a.get(i));
- heallist.add(data.get(i));
- }
- adapter.notifyDataSetChanged();
- }
- @Override
- public void onScrollStateChanged(AbsListView view, int scrollState) {
- if (lastItem == adapter.getCount()
- && scrollState == OnScrollListener.SCROLL_STATE_IDLE) {
- if (page == allpage || page > allpage) {
- Toast.makeText(this, "尾页", Toast.LENGTH_LONG).show();
- } else {
- page = page + 1;
- progressdialog =ProgressDialog.show(taskView.this, "请等待...", "正在加载...");
- refreshHandler.sleep(100);
- Toast.makeText(this, page + "/" + allpage + "页",
- Toast.LENGTH_LONG).show();
- }
- }
- }
- @Override
- public void onScroll(AbsListView view, int firstVisibleItem,
- int visibleItemCount, int totalItemCount) {
- lastItem = firstVisibleItem + visibleItemCount;
- }
- //加载
- private RefreshHandler refreshHandler =new RefreshHandler();
- //处理器
- class RefreshHandler extends Handler{
- @Override
- public void handleMessage(Message msg) {
- try{
- dealData();
- }catch(Exception e){
- e.printStackTrace();
- }finally{
- progressdialog.dismiss();//解除进度条
- }
- }
- public void sleep(long delayMillis){
- this.removeMessages(0);
- sendMessageDelayed(obtainMessage(0), delayMillis);
- }
- }
- }
package com.gk.view;import java.util.ArrayList;import java.util.HashMap;import java.util.Iterator;import java.util.List;import java.util.Map;import org.apache.http.NameValuePair;import org.apache.http.message.BasicNameValuePair;import android.app.Activity;import android.app.AlertDialog;import android.app.ProgressDialog;import android.content.DialogInterface;import android.content.DialogInterface.OnClickListener;import android.os.Bundle;import android.os.Handler;import android.os.Message;import android.view.ContextMenu;import android.view.ContextMenu.ContextMenuInfo;import android.view.LayoutInflater;import android.view.MenuItem;import android.view.View;import android.view.View.OnCreateContextMenuListener;import android.widget.AbsListView;import android.widget.AbsListView.OnScrollListener;import android.widget.AdapterView.AdapterContextMenuInfo;import android.widget.ListView;import android.widget.ProgressBar;import android.widget.SimpleAdapter;import android.widget.TextView;import android.widget.Toast;import com.gk.R;import com.gk.data.AnswerServiceHelper;import com.gk.data.TaskByPageHelper;import com.gk.data.UserDataServiceHelper;import com.gk.model.Health;public class taskView extends Activity implements OnCreateContextMenuListener, OnScrollListener { private View view; private ListView listview; private TextView cardid; private TextView recorder; private TextView consultationtype; private TextView consultationexpert; private TextView consultationcontent; private TextView answer; private TextView answer1; private TextView clientname; private AlertDialog selfdialog; private Health health; private ProgressBar progressBar; private ProgressDialog progressdialog; private int lastItem = 0; private SimpleAdapter adapter; private int page = 1; private int allpage = 1; private List<Health> heallist = new ArrayList<Health>(); private List<Map<String, Object>> httpResult = new ArrayList<Map<String, Object>>(); @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); // LayoutInflater inflater = (LayoutInflater) // getApplicationContext().getSystemService(LAYOUT_INFLATER_SERVICE); // view = inflater.inflate(R.layout.taskview, null); adapter = new SimpleAdapter(this, httpResult, R.layout.taskview, new String[] { "title", "info", "img" }, new int[] { R.id.title, R.id.info, R.id.img }); listview = new ListView(this); listview.setAdapter(adapter); listview.setOnCreateContextMenuListener(this); listview.setOnScrollListener(this); setContentView(listview); dealData(); } @Override public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) { menu.setHeaderTitle("详情菜单"); menu.add(0, 0, 1, "查看详情"); menu.add(0, 1, 2, "编辑解答"); menu.add(0, 2, 3, "取消查看"); } @Override public boolean onContextItemSelected(MenuItem item) { AdapterContextMenuInfo menuinfo = (AdapterContextMenuInfo) item .getMenuInfo(); health = heallist.get(menuinfo.position); List<NameValuePair> params = new ArrayList<NameValuePair>(); params.add(new BasicNameValuePair("iid", health.getIid().toString())); String host = UserDataServiceHelper.getHost(); String uri = host + "/task.do?task=getHealthById"; Bundle bundle = UserDataServiceHelper.getObjectByid(uri, params); if (item.getItemId() == 0) { if (bundle != null) { health = (Health) bundle.get("health"); // 创建对话框 LayoutInflater inflater = (LayoutInflater) getApplicationContext() .getSystemService(LAYOUT_INFLATER_SERVICE); view = inflater.inflate(R.layout.detail, null); // 设置 cardid = (TextView) view.findViewById(R.id.cardid); recorder = (TextView) view.findViewById(R.id.recorder); consultationtype = (TextView) view .findViewById(R.id.consultationtype); consultationexpert = (TextView) view .findViewById(R.id.consultationexpert); consultationcontent = (TextView) view .findViewById(R.id.consultationcontent); answer = (TextView) view.findViewById(R.id.answer); clientname = (TextView) view.findViewById(R.id.clientname); cardid.setText(health.getCardid()); recorder.setText(health.getRecorder()); consultationtype.setText(health.getConsultationtype()); consultationexpert.setText(health.getConsultationexpert()); consultationcontent.setText(health.getConsultationcontent()); answer.setText(health.getAnswer()); clientname.setText(health.getName()); AlertDialog.Builder ad = new AlertDialog.Builder(taskView.this); ad.setView(view); ad.setTitle("详情").create().show(); Toast.makeText(this, page + "/" + allpage + "页", Toast.LENGTH_LONG).show(); } } if (item.getItemId() == 1) { if (bundle != null) { health = (Health) bundle.get("health"); // 创建对话框 LayoutInflater inflater = (LayoutInflater) getApplicationContext() .getSystemService(LAYOUT_INFLATER_SERVICE); view = inflater.inflate(R.layout.detail, null); // 设置 cardid = (TextView) view.findViewById(R.id.cardid); recorder = (TextView) view.findViewById(R.id.recorder); consultationtype = (TextView) view .findViewById(R.id.consultationtype); consultationexpert = (TextView) view .findViewById(R.id.consultationexpert); consultationcontent = (TextView) view .findViewById(R.id.consultationcontent); answer = (TextView) view.findViewById(R.id.answer); answer.setVisibility(View.INVISIBLE);// 设置不可见 answer1 = (TextView) view.findViewById(R.id.answer1); answer1.setVisibility(View.VISIBLE);// 设置可见 clientname = (TextView) view.findViewById(R.id.clientname); cardid.setText(health.getCardid()); recorder.setText(health.getRecorder()); consultationtype.setText(health.getConsultationtype()); consultationexpert.setText(health.getConsultationexpert()); consultationcontent.setText(health.getConsultationcontent()); answer1.setText(health.getAnswer()); clientname.setText(health.getName()); AlertDialog.Builder ad = new AlertDialog.Builder(taskView.this); ad.setView(view); ad.setTitle("解答"); selfdialog = ad.create(); selfdialog.setButton("提交", new OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { String host = UserDataServiceHelper.getHost(); String uri = host + "/task.do?task=updateAnswer"; String answer = answer1.getText().toString(); String iid = health.getIid().toString(); List<NameValuePair> params = new ArrayList<NameValuePair>(); params.add((new BasicNameValuePair("answer", answer))); params.add((new BasicNameValuePair("iid", iid))); String state = AnswerServiceHelper.updateAnswer(uri, params); Toast.makeText(taskView.this, "提示:" + state, Toast.LENGTH_LONG).show(); } }); selfdialog.setButton2("取消", new OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { selfdialog.cancel(); } }); selfdialog.show(); } } return super.onContextItemSelected(item); } private static Bundle bundle; public Bundle getBundle() { bundle = getIntent().getExtras(); return bundle; } private List<Map<String, Object>> getMapData(List<Health> httpResult) { List<Map<String, Object>> list = new ArrayList<Map<String, Object>>(); for (Iterator<Health> it = httpResult.iterator(); it.hasNext();) { Map<String, Object> map = new HashMap<String, Object>(); Health health = (Health) it.next(); map.put("title", health.getName()); map.put("info", health.getConsultationexpert()); map.put("img", R.drawable.ic_launcher); list.add(map); } return list; } public List<Health> getData(int page) { String overflag = getIntent().getStringExtra("overflag"); String consultationexpert = getIntent().getStringExtra( "consultationexpert"); List<NameValuePair> params = new ArrayList<NameValuePair>(); params.add(new BasicNameValuePair("overflag", overflag)); params.add(new BasicNameValuePair("consultationexpert", consultationexpert)); params.add(new BasicNameValuePair("page", String.valueOf(page))); TaskByPageHelper task = new TaskByPageHelper(); String host = UserDataServiceHelper.getHost(); String uri = host + "/task.do?task=getTask"; Bundle bundle = task.getTask(uri, params); page = Integer.valueOf(bundle.getString("page")); allpage = Integer.valueOf(bundle.getString("allpage")); List<Health> healist = (List<Health>) bundle.get("list"); return healist; } private void dealData() { List<Health> data = getData(this.page); // heallist =data; List<Map<String, Object>> a = getMapData(data); for (int i = 0, size = a.size(); i < size; i++) { httpResult.add(a.get(i)); heallist.add(data.get(i)); } adapter.notifyDataSetChanged(); } @Override public void onScrollStateChanged(AbsListView view, int scrollState) { if (lastItem == adapter.getCount() && scrollState == OnScrollListener.SCROLL_STATE_IDLE) { if (page == allpage || page > allpage) { Toast.makeText(this, "尾页", Toast.LENGTH_LONG).show(); } else { page = page + 1; progressdialog =ProgressDialog.show(taskView.this, "请等待...", "正在加载..."); refreshHandler.sleep(100); Toast.makeText(this, page + "/" + allpage + "页", Toast.LENGTH_LONG).show(); } } } @Override public void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount) { lastItem = firstVisibleItem + visibleItemCount; } //加载 private RefreshHandler refreshHandler =new RefreshHandler(); //处理器 class RefreshHandler extends Handler{ @Override public void handleMessage(Message msg) { try{ dealData(); }catch(Exception e){ e.printStackTrace(); }finally{ progressdialog.dismiss();//解除进度条 } } public void sleep(long delayMillis){ this.removeMessages(0); sendMessageDelayed(obtainMessage(0), delayMillis); } }}
taskview.xml
- <?xml version="1.0" encoding="utf-8"?>
- <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
- android:orientation="horizontal" android:layout_width="fill_parent"
- android:layout_height="fill_parent" >
- <ImageView android:id="@+id/img"
- android:layout_width="wrap_content"
- android:layout_height="wrap_content"
- android:layout_margin="5px"/>
- <LinearLayout android:orientation="vertical"
- android:layout_width="wrap_content"
- android:layout_height="wrap_content">
- <TextView android:id="@+id/title"
- android:layout_width="wrap_content"
- android:layout_height="wrap_content"
- android:textColor="#FFFFFFFF"
- android:textSize="15px" />
- <TextView android:id="@+id/info"
- android:layout_width="wrap_content"
- android:layout_height="wrap_content"
- android:textColor="#FFFFFFFF"
- android:textSize="15px" />
- </LinearLayout>
- <!-- <ListView
- android:id="@id/android:list"
- android:layout_width="fill_parent"
- android:layout_height="wrap_content"
- android:drawSelectorOnTop="false"
- android:scrollbars="vertical"/> -->
- </LinearLayout>
<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="horizontal" android:layout_width="fill_parent" android:layout_height="fill_parent" > <ImageView android:id="@+id/img" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_margin="5px"/> <LinearLayout android:orientation="vertical" android:layout_width="wrap_content" android:layout_height="wrap_content"> <TextView android:id="@+id/title" android:layout_width="wrap_content" android:layout_height="wrap_content" android:textColor="#FFFFFFFF" android:textSize="15px" /> <TextView android:id="@+id/info" android:layout_width="wrap_content" android:layout_height="wrap_content" android:textColor="#FFFFFFFF" android:textSize="15px" /> </LinearLayout><!-- <ListView android:id="@id/android:list" android:layout_width="fill_parent" android:layout_height="wrap_content" android:drawSelectorOnTop="false" android:scrollbars="vertical"/> --></LinearLayout>
后台逻辑:
- package com.gk.data;
- import java.io.Serializable;
- import java.sql.Timestamp;
- import java.util.ArrayList;
- import java.util.List;
- import org.apache.http.HttpResponse;
- import org.apache.http.NameValuePair;
- import org.apache.http.client.ClientProtocolException;
- import org.apache.http.client.entity.UrlEncodedFormEntity;
- import org.apache.http.client.methods.HttpPost;
- import org.apache.http.impl.client.DefaultHttpClient;
- import org.apache.http.message.BasicNameValuePair;
- import org.apache.http.protocol.HTTP;
- import org.apache.http.util.EntityUtils;
- import org.json.JSONArray;
- import org.json.JSONObject;
- import android.content.Intent;
- import android.os.Bundle;
- import android.os.Parcelable;
- import android.util.SparseArray;
- import com.gk.model.Agent;
- import com.gk.model.Health;
- import com.gk.util.BundleUtil;
- public class TaskByPageHelper {
- private static HttpResponse httpresponse =null;
- public static Bundle getTask(String uri,List<NameValuePair> params){
- HttpPost httqRequest =new HttpPost(uri);
- try{
- httqRequest.setEntity(new UrlEncodedFormEntity(params,HTTP.UTF_8));
- httpresponse = new DefaultHttpClient().execute(httqRequest);
- if(httpresponse.getStatusLine().getStatusCode() == 200){
- //取出应答字符串
- String strResult = EntityUtils.toString(httpresponse.getEntity());
- JSONObject json =new JSONObject(strResult);
- String pageSize =json.getString("pageSize");
- String allcount = json.getString("allcount");
- String allpage = json.getString("allpage");
- String page = json.getString("page");
- JSONArray jsonarray = json.getJSONArray("list");
- List<Health> healthlist =new ArrayList<Health>();
- for(int i=0; i<jsonarray.length(); i++){
- JSONObject object =(JSONObject)jsonarray.get(i);
- Health health =new Health();
- health.setIid(object.getInt("iid"));
- health.setConsultationexpert(object.getString("consultationexpert"));
- health.setName(object.getString("name"));
- healthlist.add(health);
- }
- Bundle bundle =new Bundle();
- bundle.putString("pageSize", pageSize);
- bundle.putString("allcount", allcount);
- bundle.putString("allpage",allpage);
- bundle.putString("page", page);
- bundle.putSerializable("list", (Serializable) healthlist);
- System.out.println(json.toString());
- return bundle;
- }else{
- return null;
- }
- }catch(ClientProtocolException e){
- e.printStackTrace();
- } catch (Exception e) {
- e.printStackTrace();
- }
- return null;
- }
- }
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