java如何设置listadapter的视图
嗨，我尝试与ListAdapter.java中的按钮共享文本：
但它不起作用，我如何在Onclick void中为按钮设置视图？
我使用片段作为列表
请参阅我的代码：
package com.kamalan.php安卓api;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.List;
import 安卓.app.ActionBar;
import 安卓.app.Activity;
import 安卓.content.ClipData;
import 安卓.content.Context;
import 安卓.content.Intent;
import 安卓.net.Uri;
import 安卓.text.ClipboardManager;
import 安卓.util.Log;
import 安卓.view.LayoutInflater;
import 安卓.view.View;
import 安卓.view.ViewGroup;
import 安卓.view.View.OnClickListener;
import 安卓.view.Window;
import 安卓.view.WindowManager;
import 安卓.widget.BaseAdapter;
import 安卓.widget.Button;
import 安卓.widget.ImageView;
import 安卓.widget.RatingBar;
import 安卓.widget.TextView;
import 安卓.widget.Toast;
public class VoteListAdapter extends BaseAdapter {
// protected static final Context VoteListAdapter.this = null;
private final String TAG = "*** VoteListAdapter ***";
private LayoutInflater myInflater;
private List<Vote> vote;
public VoteListAdapter(Context context) {
myInflater = LayoutInflater.from(context);
}
public void setData(List<Vote> vote) {
this.vote = vote;
}
@Override
public int getCount() {
return vote.size();
}
@Override
public Object getItem(int position) {
return null;
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
final ViewHolder holder;
if (convertView == null) {
convertView = myInflater.inflate(R.layout.row, null);
holder = new ViewHolder();
holder.tvName = (TextView) convertView.findViewById(R.id.tvName);
holder.tvComment = (TextView) convertView.findViewById(R.id.tvComment);
holder.tvDate = (TextView) convertView.findViewById(R.id.tvDate);
holder.ratingBar = (RatingBar) convertView.findViewById(R.id.ratingBar);
holder.sharebtn = (Button) convertView.findViewById(R.id.sharebtn);
convertView.setTag(holder);
} else {
holder = (ViewHolder) convertView.getTag();
}
holder.tvName.setText(vote.get(position).getName());
holder.tvComment.setText(vote.get(position).getComment());
holder.tvDate.setText(getFormatedDate(vote.get(position).getPublishDate()));
holder.ratingBar.setRating(Integer.parseInt(vote.get(position).getRate()));
OnClickListener clickListener = new OnClickListener() {
@Override
public void onClick(View v) {
Context context = v.getContext();
String text = (String) holder.tvComment.getText();
//Toast.makeText(context, ab, Toast.LENGTH_LONG).show();
Intent i = new Intent(Intent.ACTION_SEND);
i.setType("text/plain");
i.putExtra(Intent.EXTRA_TEXT,text);
try {
context.startActivity(Intent.createChooser(i, "Share"));
} catch (安卓.content.ActivityNotFoundException ex) {
ex.printStackTrace();
}
}
};
holder.sharebtn.setOnClickListener(clickListener);
return convertView;
}
private String getFormatedDate(String date) {
String myDate = null;
try {
Date oldDate = new SimpleDateFormat("yy-mm-dd hh:mm:ss").parse(date);
myDate = new SimpleDateFormat("dd MMM yyyy").format(oldDate);
} catch (ParseException e) {
myDate = "";
e.printStackTrace();
}
return myDate;
}
static class ViewHolder {
public Button sharebtn;
TextView tvName;
TextView tvComment;
TextView tvDate;
RatingBar ratingBar;
}
}
和零碎的评论。爪哇：
package com.kamalan.php安卓api;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.ArrayList;
import java.util.List;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import com.kamalan.php安卓api.FragmentForm.OnSendingRequestToServer;
//import com.kamalan.php安卓api.FragmentForm.SendFormTask;
import 安卓.app.ActionBar;
import 安卓.app.Activity;
import 安卓.content.Context;
import 安卓.content.Intent;
import 安卓.net.Uri;
import 安卓.os.AsyncTask;
import 安卓.os.Bundle;
import 安卓.provider.Settings.Secure;
import 安卓.support.v4.app.Fragment;
import 安卓.util.Log;
import 安卓.view.LayoutInflater;
import 安卓.view.MenuItem;
import 安卓.view.View;
import 安卓.view.ViewGroup;
import 安卓.view.View.OnClickListener;
import 安卓.widget.AdapterView;
import 安卓.widget.Button;
import 安卓.widget.ImageView;
import 安卓.widget.ListView;
import 安卓.widget.Spinner;
import 安卓.widget.TextView;
import 安卓.widget.Toast;
public class FragmentComment extends Fragment {
private final String TAG = "FragmentComment";
private OnSendingRequestToServer onRequestToServer;
private Context context;
private Spinner spinner;
private ListView listView;
private List<Vote> voteList;
private VoteListAdapter listAdapter;
int ab = 1;
@Override
public void onAttach(Activity activity) {
super.onAttach(activity);
try {
onRequestToServer = (OnSendingRequestToServer) activity;
} catch (ClassCastException e) {
throw new ClassCastException(activity.toString() + " must implement OnConnectingToServer interface.");
}
context = activity.getApplicationContext();
Log.d(TAG, "Fragment attached to activity.");
}
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
super.onCreateView(inflater, container, savedInstanceState);
View view = inflater.inflate(R.layout.fragment_comments, container, false);
spinner = (Spinner) view.findViewById(R.id.spinner);
final TextView refresh = (TextView) view.findViewById(R.id.closetag);
refresh.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
// ActionBar actionBar = context.getSupportActionBar();
//getSupportActionBar();
// actionBar.hide();
//安卓.app.ActionBar bar = getActivity().getActionBar();
//bar.hide();
if (ab == 1){
ab = 0;
refresh.setText("کوچک کردن");
spinner.setVisibility(View.GONE);
安卓.app.ActionBar bar = getActivity().getActionBar();
bar.hide();
}else{
ab = 1;
refresh.setText("تمام صفحه");
spinner.setVisibility(View.VISIBLE);
安卓.app.ActionBar bar = getActivity().getActionBar();
bar.show();
}
}
});
// TextView tvComment = (TextView) view.findViewById(R.id.tvComment);
spinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> parent, View view, int pos, long id) {
String deviceId = "all";
voteList.clear();
if(pos == 1){
//deviceId = getDeviceId();
deviceId = "c1";
}else if(pos == 2){
deviceId = "c2";
}else if(pos == 3){
deviceId = "c3";
}else if(pos == 4){
deviceId = "c4";
}else if(pos == 5){
deviceId = "c5";
}else if(pos == 6){
deviceId = "c6";
}else if(pos == 7){
deviceId = "c7";
}else if(pos == 8){
deviceId = getDeviceId();
}
voteList.clear();
new RequestVoteTask(deviceId).execute();
}
@Override
public void onNothingSelected(AdapterView<?> arg0) {
}
});
listView = (ListView) view.findViewById(R.id.listView);
return view;
}
@Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
voteList = new ArrayList<Vote>();
listAdapter = new VoteListAdapter(context);
}
private String getDeviceId() {
return Secure.getString(context.getContentResolver(), Secure.ANDROID_ID);
}
/*----------------------------------------------------------------------------
* This method is responsible for creating another thread in parallel with
* main UI thread in order to send a request to server and get data (if any).
* ---------------------------------------------------------------------------*/
public class RequestVoteTask extends AsyncTask<Void, Void, Boolean> {
String deviceId;
RequestVoteTask(String deviceId) {
this.deviceId = deviceId;
}
@Override
protected void onPreExecute() {
Log.d(TAG, "RequestVoteTask is about to start...");
onRequestToServer.DisplayLoding(true);
}
@Override
protected Boolean doInBackground(Void... params) {
boolean status = false;
HttpURLConnection urlConnection = null;
try {
URL url = new URL(LinkManager.getCommentAPI(deviceId));
Log.d(TAG, "Try to open: " + url.toString());
urlConnection = (HttpURLConnection) url.openConnection();
int responseCode = urlConnection.getResponseCode();
Log.d(TAG, "Response code is: " + responseCode);
if (responseCode == HttpURLConnection.HTTP_OK) {
BufferedReader in = new BufferedReader(new InputStreamReader(urlConnection.getInputStream()));
if (in != null) {
StringBuilder strBuilder = new StringBuilder();
// Read character by character
int ch = 0;
while ((ch = in.read()) != -1)
strBuilder.append((char) ch);
// get returned message and show it
String response = strBuilder.toString();
Log.d("Server response:", response);
JSONObject jObject = new JSONObject(response);
JSONArray jsonArray = jObject.getJSONArray("posts");
for(int i=0; i<jsonArray.length(); i++){
Vote vote = new Vote();
vote.setDeviceId(jsonArray.getJSONObject(i).getString("DeviceId"));
vote.setName(jsonArray.getJSONObject(i).getString("FullName"));
vote.setRate(jsonArray.getJSONObject(i).getString("Rate"));
vote.setComment(jsonArray.getJSONObject(i).getString("Comment"));
vote.setPublishDate(jsonArray.getJSONObject(i).getString("PublishTime"));
voteList.add(vote);
}
if(voteList.size() >= 1)
status = true;
}
in.close();
}
}
catch(MalformedURLException e){
e.printStackTrace();
}
catch (IOException e) {
e.printStackTrace();
}
catch (JSONException e) {
e.printStackTrace();
}
finally {
urlConnection.disconnect();
}
return status;
}
@Override
protected void onPostExecute(Boolean result) {
Log.d(TAG, "RequestVoteTask finished its task.");
onRequestToServer.DisplayLoding(false);
if(!result)
Toast.makeText(context, "جکی موجود نیست", Toast.LENGTH_LONG).show();
// for(int i=0; i<voteList.size(); i++)
// Log.d("Item " + i, voteList.get(i).toString());
listAdapter.setData(voteList);
listView.setAdapter(listAdapter);
}
}
}
我试着写getView或充气，然后。。。但它不起作用
# 1 楼答案
试试这种方法，希望这能帮助你解决问题