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我搜索並試圖對此問題實施不同的解決方案，但沒有任何解決此問題。我有一個自定義的listview類，當它從我的主要活動中調用時，第一次按照預期的那樣工作。在移動到下一個活動時單擊一個項目收益率。但是，當我在我的新活動中併爲OnItemClickListener調用相同的代碼時，它不會對點擊作出反應。任何幫助都會很大，因爲我很難過。ListView中的OnItemClickListener無法識別點擊
OCForumsAppActivity是我的主要活動，然後BothActivity是我的onItemClickListener不工作的地方。
OCForumsAppActivity.java：
package com.ocforums.application;
import java.net.URL;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.cookie.Cookie;
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.htmlcleaner.TagNode;
import android.app.Activity;
import android.app.ProgressDialog;
import android.os.AsyncTask;
import android.os.Bundle;
import android.util.Log;
import android.view.Menu;
import android.view.View;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.LinearLayout;
import android.widget.ListView;
import android.widget.Toast;
import com.ocforums.application.R;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.widget.EditText;
public class OCForumsAppActivity extends Activity {
//private MyCustomAdapter mAdapter;
public String md5(String s) {
try {
// Create MD5 Hash
MessageDigest digest = java.security.MessageDigest.getInstance("MD5");
digest.update(s.getBytes());
byte messageDigest[] = digest.digest();
// Create Hex String
StringBuffer hexString = new StringBuffer();
for (int i=0; i<messageDigest.length; i++)
hexString.append(Integer.toHexString(0xFF & messageDigest[i]));
return hexString.toString();
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
}
return "";
}
public void loginfunc(String un,String pwd) {
try {
String pmd5sum = md5(pwd);
//HttpClient client = new DefaultHttpClient();
DefaultHttpClient client = new DefaultHttpClient();
HttpGet httpget = new HttpGet("https://portal.sun.com/portal/dt");
HttpResponse response = client.execute(httpget);
HttpEntity entity = response.getEntity();
List<Cookie> cookies = client.getCookieStore().getCookies();
String postURL = "http://www.overclockers.com/forums/login.php?do=login";
HttpPost post = new HttpPost(postURL);
List<NameValuePair> params = new ArrayList<NameValuePair>();
params.add(new BasicNameValuePair("vb_login_username", un));
params.add(new BasicNameValuePair("vb_login_md5sumpassword", pmd5sum));
params.add(new BasicNameValuePair("cookieuser","1"));
UrlEncodedFormEntity ent = new UrlEncodedFormEntity(params,HTTP.UTF_8);
post.setEntity(ent);
response = client.execute(post);
entity = response.getEntity();
cookies = client.getCookieStore().getCookies();
if (entity != null) {
Log.i("RESPONSE",EntityUtils.toString(entity));
}
client.getConnectionManager().shutdown();
} catch (Exception e) {
e.printStackTrace();
}
}
/* private class MyCustomAdapter extends BaseAdapter {
private ArrayList mData = new ArrayList();
private LayoutInflater mInflater;
public MyCustomAdapter() {
mInflater = (LayoutInflater)getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}
public void addItem(final List<List<String>> output2d) {
mData.add(output2d);
notifyDataSetChanged();
}
public int getCount() {
return mData.size();
}
public String getItem(int position) {
return (String) mData.get(position);
}
public long getItemId(int position) {
return position;
}
public View getView(int position, View convertView, ViewGroup parent) {
System.out.println("getView " + position + " " + convertView);
ViewHolder holder = null;
if (convertView == null) {
convertView = mInflater.inflate(R.id.listView1, null);
holder = new ViewHolder();
holder.textView = (TextView)convertView.findViewById(R.id.listView1);
convertView.setTag(holder);
} else {
holder = (ViewHolder)convertView.getTag();
}
holder.textView.setText((CharSequence) mData.get(position));
return convertView;
}
}
public static class ViewHolder {
public TextView textView;
}*/
public static String gethurl()
{
return OCForumsAppActivity.hurl;
}
public static void sethurl(String newh)
{
OCForumsAppActivity.hurl = newh;
}
public static void sethreflist(List<String> newlist)
{
hrefslist = newlist;
}
CustomListView lv = new CustomListView();
public static String hurl;
private ProgressDialog pd;
static List<String> hrefslist;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
pd = ProgressDialog.show(OCForumsAppActivity.this, "Working...", "request to server", true, false);
new ParseForums().execute("http://www.overclockers.com/forums/?styleid=23");
ListView list = (ListView)findViewById(R.id.listView1);
list.setOnItemClickListener(new OnItemClickListener(){
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
Log.i("testing",hurl);
if(hurl.matches("(?i).*forumdisplay.*")){
Intent newActivity = new Intent(getBaseContext(), BothActivity.class);
startActivity(newActivity);
}
else if(hurl.matches("(?i).*showthread.php.*")) {
Intent newActivity = new Intent(getBaseContext(), ThreadActivity.class);
startActivity(newActivity);
}
else if(hrefslist == null){
Toast.makeText(getApplicationContext(), "Confused?", Toast.LENGTH_LONG).show();
//TODO add context menu for quote and reply
}
else{
Toast.makeText(getApplicationContext(), "Very Confused", Toast.LENGTH_LONG).show();
}
}
});
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.menu, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case R.id.login:
final AlertDialog.Builder alert = new AlertDialog.Builder(this);
LinearLayout lila1= new LinearLayout(this);
lila1.setOrientation(1); //1 is for vertical orientation
final EditText usernametextbox = new EditText(this);
final EditText passwdtextbox = new EditText(this);
lila1.addView(usernametextbox);
lila1.addView(passwdtextbox);
alert.setView(lila1);
alert.setTitle("Login");
alert.setPositiveButton("Login", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int whichButton) {
String uname = usernametextbox.getText().toString().trim();
String passwd = usernametextbox.getText().toString().trim();
loginfunc(uname,passwd);
}
});
alert.setNegativeButton("Cancel",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int whichButton) {
dialog.cancel();
}
});
alert.show();
break;
case R.id.settings:
Toast.makeText(getApplicationContext(), "Perhaps one day...", Toast.LENGTH_SHORT).show();
break;
case R.id.UnansweredThreads:
hurl ="http://www.overclockers.com/forums/search.php?do=process&replyless=1&replylimit=0&exclude=78,124,37,167,186,186,187,21,144,18,179,150,181,182,183,11,164,95,151,123,27,28,29,30,31,32,142,170,33,36,67,62,63,65,11,19,200&nocache=0";
Intent newActivity = new Intent(getBaseContext(), ThreadActivity.class);
startActivity(newActivity);
break;
case R.id.MyPosts:
hurl = "http://www.overclockers.com/forums/search.php?do=getdaily&exclude=123&nocache=1";
Intent newActivity1 = new Intent(getBaseContext(), ThreadActivity.class);
startActivity(newActivity1);
break;
}
return true;
}
class ParseForums extends AsyncTask<String, Void, List<List<String>>> {
protected List<List<String>> doInBackground(String... arg) {
List<List<String>> combined2d = new ArrayList<List<String>>();
List<String> output = new ArrayList<String>();
List<String> hrefs = new ArrayList<String>();
try
{
HtmlHelper hh = new HtmlHelper(new URL(arg[0]));
List<TagNode> links = hh.getLinksByClass("forumtitle");
for (Iterator<TagNode> iterator = links.iterator(); iterator.hasNext();)
{
TagNode divElement = (TagNode) iterator.next();
output.add(divElement.getText().toString());
hrefs.add(divElement.getAttributeByName("href").toString());
}
combined2d.add(output);
combined2d.add(hrefs);
}
catch(Exception e)
{
e.printStackTrace();
}
return combined2d;
}
protected void onPostExecute(List<List<String>> output2d) {
pd.dismiss();
output2d.size();
Log.i("size",Integer.toString(output2d.get(0).size()));
Log.i("size",Integer.toString(output2d.get(1).size()));
ListView listview = (ListView) findViewById(R.id.listView1);
listview.setAdapter(lv.new MyCustomAdapter(OCForumsAppActivity.this, R.layout.row , output2d.get(0)));
hrefslist = output2d.get(1);
}
}
}
BothActivity.java：
package com.ocforums.application;
import java.net.URL;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import org.htmlcleaner.TagNode;
import com.ocforums.application.CustomListView.MyCustomAdapter;
import android.app.Activity;
import android.app.ProgressDialog;
import android.content.Intent;
import android.os.AsyncTask;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ListView;
import android.widget.Toast;
import android.widget.AdapterView.OnItemClickListener;
public class BothActivity extends Activity{
List<String> foutput = new ArrayList<String>();
List<String> houtput = new ArrayList<String>();
CustomListView lv = new CustomListView();
String hurl;
List<String> hrefslist;
private ProgressDialog pd;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
String qhurl = OCForumsAppActivity.gethurl();
String shurl = "http://www.overclockers.com/forums/"+qhurl+"&styleid=23";
pd = ProgressDialog.show(BothActivity.this, "Working...", "request to server", true, false);
new ParseBoth().execute(shurl);
Log.i("where ami?","back from execution");
ListView list = (ListView)findViewById(R.id.listView1);
list.setOnItemClickListener(new OnItemClickListener(){
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
hurl = hrefslist.get((int) id).replace("amp;","");
Toast.makeText(getApplicationContext(), hurl, Toast.LENGTH_LONG).show();
Log.i("testing",hurl);
if(hurl.matches("(?i).*forumdisplay.*")){
Toast.makeText(getApplicationContext(), hurl, Toast.LENGTH_LONG).show();
OCForumsAppActivity.sethurl(hurl);
BothActivity ba = new BothActivity();
ba.onCreate(null);
}
else if(hurl.matches("(?i).*showthread.php.*")) {
Intent newActivity = new Intent(getBaseContext(), ThreadActivity.class);
startActivity(newActivity);
}
else if(hrefslist == null){
Toast.makeText(getApplicationContext(), "Confused?", Toast.LENGTH_LONG).show();
//TODO add context menu for quote and reply
}
else{
Toast.makeText(getApplicationContext(), "Very Confused", Toast.LENGTH_LONG).show();
}
}
});
}
class ParseBoth extends AsyncTask<String, Void, List<List<String>>> {
protected List<List<String>> doInBackground(String... arg) {
List<List<String>> combined2d = new ArrayList<List<String>>();
List<String> output = new ArrayList<String>();
List<String> hrefs = new ArrayList<String>();
List<String> Toutput = new ArrayList<String>();
List<String> Threfs = new ArrayList<String>();
try
{
HtmlHelper hh = new HtmlHelper(new URL(arg[0]));
HtmlHelper hh2 = new HtmlHelper(new URL(arg[0]));
List<TagNode> links = hh.getLinksByClass("forumtitle");
List<TagNode> Tlinks = hh2.getLinksById("(?i).*thread.*");
for (Iterator<TagNode> iterator = links.iterator(); iterator.hasNext();)
{
TagNode divElement = (TagNode) iterator.next();
output.add(divElement.getText().toString());
hrefs.add(divElement.getAttributeByName("href").toString());
}
for (Iterator<TagNode> iterator = Tlinks.iterator(); iterator.hasNext();)
{
TagNode divElement = (TagNode) iterator.next();
Toutput.add(divElement.getText().toString());
Threfs.add(divElement.getAttributeByName("href").toString());
}
Log.i("size",Integer.toString(output.size()));
Log.i("size",Integer.toString(hrefs.size()));
Log.i("size",Integer.toString(Toutput.size()));
Log.i("size",Integer.toString(Threfs.size()));
combined2d.add(output);
combined2d.add(hrefs);
combined2d.add(Toutput);
combined2d.add(Threfs);
}
catch(Exception e)
{
e.printStackTrace();
}
return combined2d;
}
protected void onPostExecute(List<List<String>> output2d) {
pd.dismiss();
output2d.size();
foutput.addAll(output2d.get(0));
foutput.addAll(output2d.get(2));
houtput.addAll(output2d.get(1));
houtput.addAll(output2d.get(3));
Log.i("size",Integer.toString(foutput.size()));
setContentView(R.layout.main);
Log.i("where ami?","going");
ListView listview = (ListView) findViewById(R.id.listView1);
listview.setAdapter(lv.new MyCustomAdapter(getApplicationContext(), R.layout.row , foutput));
Log.i("where ami?","back");
hrefslist = houtput;
}
}
}
CustomListView.java：
package com.ocforums.application;
import java.util.List;
import android.app.Activity;
import android.app.ListActivity;
import android.content.Context;
import android.os.Bundle;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.ImageView;
import android.widget.TextView;
public class CustomListView extends ListActivity {
List<String> lists;
Context fcontext;
public void makelistview(List<String> list, Context context){
lists=list;
setListAdapter(new MyCustomAdapter(context, R.layout.row, lists));
}
public void onCreate(Bundle savedInstanceState) {
//super.onCreate(savedInstanceState);
}
public class MyCustomAdapter extends ArrayAdapter<String> {
public MyCustomAdapter(Context context, int textViewResourceId,
List<String> objects) {
super(context, textViewResourceId, objects);
fcontext = context;
// TODO Auto-generated constructor stub
lists=objects;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
// TODO Auto-generated method stub
TextView label=(TextView)row.findViewById(R.id.forumlist);
label.setText(lists.get(position));
ImageView icon=(ImageView)row.findViewById(R.id.icon);
if (lists.get(position).matches("AMD*")){
icon.setImageResource(R.drawable.forum_new);
}
else{
icon.setImageResource(R.drawable.forum_old);
}
return row;
}
}
}
row.xml：
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<ImageView
android:id="@+id/icon"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:focusable="false"
android:contentDescription="OCForums thread icon"
android:src="@drawable/forum_new" />
<TextView
android:id="@+id/forumlist"
android:focusable="false"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
</LinearLayout>
的main.xml：
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<ListView
android:id="@+id/listView1"
android:focusable="false"
android:layout_width="fill_parent"
android:layout_height="wrap_content" >
</ListView>
</LinearLayout>
您應該將代碼縮短到相關部分。沒有人會閱讀那麼多的代碼。 – 2011-12-30 23:42:35