0

这是我的代码，我想在单击项目时显示一个对话框..你能帮我吗？这是我的代码，我想在单击项目时显示一个对话框..你能帮我吗？

import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;

import android.app.Activity;
import android.content.Context;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.Button;
import android.widget.TextView; 
public class DataAdapter extends BaseAdapter {

Context mContext; 
private LayoutInflater mInflater;
String targetmonth;
String targetyear;
String targetamount; 
String[] month;
String[] year;
String[] amount;


public DataAdapter(Context c, String[] month, String[] year, String[] amount) {
    this.month = month;
    this.year = year;
    this.amount = amount; 
    mContext = c;
    mInflater = LayoutInflater.from(c); 
} 
public int getCount() {
    return month.length;
} 
public Object getItem(int position) {
    return position;
} 
public long getItemId(int position) {
    return position;
} 
public View getView(int position, View convertView, ViewGroup parent) {
    ViewHolder holder = null;

    holder = new ViewHolder();

    if (convertView == null) {
        convertView = mInflater.inflate(R.layout.customgrid, parent, false);
        holder = new ViewHolder();
        holder.month = (TextView) convertView
                .findViewById(R.id.targetmonth); 
        holder.year = (TextView) convertView.findViewById(R.id.targetyear); 
        holder.amount = (TextView) convertView
                .findViewById(R.id.targetamount); 



        if (position == 0) {
            convertView.setTag(holder);
        }
    } else {
        holder = (ViewHolder) convertView.getTag();
    }

    try {

        holder.month.setText(month[position]);
        holder.year.setText(year[position]);
        holder.amount.setText(amount[position]);
    } catch (Exception e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    } 
    return convertView;
} 
static class ViewHolder {
    TextView month;
    TextView year, amount; 
}

}

我认为在这部分

public View getView(int position, View convertView, ViewGroup parent) {
    ViewHolder holder = null;

    holder = new ViewHolder();

    if (convertView == null) {
        convertView = mInflater.inflate(R.layout.customgrid, parent, false);
        holder = new ViewHolder();
        holder.month = (TextView) convertView
                .findViewById(R.id.targetmonth); 
        holder.year = (TextView) convertView.findViewById(R.id.targetyear); 
        holder.amount = (TextView) convertView
                .findViewById(R.id.targetamount);

主要活动.java

package com.demo.php.listview;

import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.ArrayList;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.HttpClient;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.params.BasicHttpParams;
import org.apache.http.params.HttpConnectionParams;
import org.apache.http.params.HttpParams;
import org.apache.http.protocol.HTTP;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import android.app.Activity;
import android.app.ProgressDialog;
import android.graphics.Color;
import android.net.ParseException;
import android.os.AsyncTask;
import android.os.Bundle;
import android.view.Window;
import android.widget.ListView;
import android.widget.Toast;

public class MainActivity extends Activity {
JSONArray jArray;
String result = null;
InputStream is = null;
StringBuilder sb = null; 
ArrayList<String> al = new ArrayList<String>();
ArrayList<String> al1 = new ArrayList<String>();
ArrayList<String> al2 = new ArrayList<String>();
String targetmonth;
String targetyear;
String targetamount;
//  int responseCode;
//int listItemCount=0;
ListView listview ;
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState); 
    setTheme(Color.WHITE); 
    setTitleColor(Color.rgb(0x74, 0, 0x37));
    setTitle("DEMO PHP");
    requestWindowFeature(Window.FEATURE_RIGHT_ICON); 
    setContentView(R.layout.main);
    listview = (ListView) findViewById(R.id.listView1);
    new LoadData().execute();

} 



private class LoadData extends AsyncTask<Void, Void, Void> { 
    private ProgressDialog progressDialog;  
    @Override
    // can use UI thread here
    protected void onPreExecute() {
    this.progressDialog = ProgressDialog.show(MainActivity.this, "","         Loading...");  
    }
    @Override
    protected void onPostExecute(final Void unused) {  
        try{

                 listview.setAdapter(new DataAdapter(MainActivity.this,al.toArray(new String[al.size()]),al1.toArray(new String[al1.size()]),al2.toArray(new String[al2.size()])));
                 this.progressDialog.dismiss();

            }
            catch(Exception e){ 
                Toast.makeText(getApplicationContext(), e.toString(), Toast.LENGTH_LONG).show();
            }  
    }
    @Override
    protected Void doInBackground(Void... params) {
    // TODO Auto-generated method stub  
        // HTTP post 
                try { 
                    ArrayList<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>();
                    HttpClient httpclient = new DefaultHttpClient(); 
                    try{
                    HttpPost httppost = new HttpPost("http://192.168.0.2/android/test.php");

                    StringEntity se = new StringEntity("envelope",HTTP.UTF_8);
                    httppost.setEntity(se); 
                    HttpParams httpParameters = new BasicHttpParams();
                    // Set the timeout in milliseconds until a connection is established.
                    int timeoutConnection = 3000;
                    HttpConnectionParams.setConnectionTimeout(httpParameters, timeoutConnection);
                    // Set the default socket timeout (SO_TIMEOUT) 
                    // in milliseconds which is the timeout for waiting for data.
                    int timeoutSocket = 3000;
                    HttpConnectionParams.setSoTimeout(httpParameters, timeoutSocket); 

                    httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
                    HttpResponse response = httpclient.execute(httppost);
                    HttpEntity entity = response.getEntity();
                    is = entity.getContent(); 
                    }
                    catch(Exception e){
                        Toast.makeText(getApplicationContext(), e.toString(), Toast.LENGTH_LONG).show();
                    }
                    //buffered reader
                    try{
                    BufferedReader reader = new BufferedReader(new InputStreamReader(
                            is, "iso-8859-1"), 80);
                    sb = new StringBuilder();
                    sb.append(reader.readLine() + "\n");
                    String line = "0";
                    while ((line = reader.readLine()) != null) {
                        sb.append(line + "\n");
                    }
                    is.close();
                    result = sb.toString();
                    }
                    catch(Exception e){
                        Toast.makeText(getApplicationContext(), e.toString(), Toast.LENGTH_LONG).show();
                    }
                    try{
                    jArray = new JSONArray(result);
                    JSONObject json_data = null;
                    for (int i = 0; i < jArray.length(); i++) {
                        json_data = jArray.getJSONObject(i); 
                        targetamount=json_data.getString("targetamount");
                        targetmonth=json_data.getString("targetmonth");
                        targetyear = json_data.getString("targetyear"); 
                        al.add(targetmonth); 
                        al1.add(targetyear);
                        al2.add(targetamount);  

                        //listItemCount=al2.size();
                    }
                }
                catch(JSONException e){
                    Toast.makeText(getApplicationContext(), e.toString(), Toast.LENGTH_LONG).show();
                }   
                } catch (ParseException e) {
                //  Log.e("log_tag", "Error in http connection" + e.toString());
                    Toast.makeText(getApplicationContext(), e.toString(), Toast.LENGTH_LONG).show();
                }  
                 catch (Exception e) {
                        //  Log.e("log_tag", "Error in    http connection" + e.toString());
                                Toast.makeText(getApplicationContext(), e.toString(), Toast.LENGTH_LONG).show();
                        }        
        return null; 
    }
} 


   }
4

2 回答 2

0

如果我理解正确，您希望在单击持有人的其中一项时显示一个对话框。您可以尝试这种方式：

holder.month.setOnClickListener(new OnClickListener() {

    @Override
    public void onClick(View v) {
        // TODO Auto-generated method stub
        final AlertDialog alertDialog = new AlertDialog.Builder(getApplicationContext()).create();
        alertDialog.setIcon(/*Provide any drawable*/);
        alertDialog.setTitle("Alert Dialog");
        alertDialog.setMessage("Alert Dialog in OnClick");
        alertDialog.setButton(AlertDialog.BUTTON_POSITIVE,
            "Ok",
            new OnClickListener() {

                @Override
                public void onClick(DialogInterface dialog, int which) {
                    // TODO Auto-generated method stub
                    alertDialog.dismiss();
                }
            });

         alertDialog.show();
    }
});
于 2013-07-13T05:05:13.070 回答
0

像这样使用：

    public class MainActivity extends Activity {

           class DataAdapter extends BaseAdapter {


    public View getView(int position, View convertView, ViewGroup parent) {
        ViewHolder holder = null;

 holder = new ViewHolder();

      //Onclick for your tagetyear TextView
      holder.year = (TextView) convertView.findViewById(R.id.targetyear); 

        holder.year.setOnClickListener(new OnClickListener() {

        @SuppressWarnings("unused")
    public void onClick(View v) {
        // TODO Auto-generated method stub
     }
    });
   }
  }
}

主要活动：

public class MainActivity extends Activity {
JSONArray jArray;
  String result = null;
  InputStream is = null;
  StringBuilder sb = null; 
  ArrayList<String> al = new ArrayList<String>();
    ArrayList<String> al1 = new ArrayList<String>();
   ArrayList<String> al2 = new ArrayList<String>();
  String targetmonth;
  String targetyear;
   String targetamount;
     //  int responseCode;
   //int listItemCount=0;
   ListView listview ;
    @Override
   public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState); 
setTheme(Color.WHITE); 
setTitleColor(Color.rgb(0x74, 0, 0x37));
setTitle("DEMO PHP");
requestWindowFeature(Window.FEATURE_RIGHT_ICON); 
setContentView(R.layout.main);
listview = (ListView) findViewById(R.id.listView1);
new LoadData().execute();

  } 



 private class LoadData extends AsyncTask<Void, Void, Void> { 
private ProgressDialog progressDialog;  
@Override
// can use UI thread here
protected void onPreExecute() {
this.progressDialog = ProgressDialog.show(MainActivity.this, "","         Loading...");  
}
@Override
protected void onPostExecute(final Void unused) {  
    try{

             listview.setAdapter(new DataAdapter(MainActivity.this,al.toArray(new String[al.size()]),al1.toArray(new String[al1.size()]),al2.toArray(new String[al2.size()])));
             this.progressDialog.dismiss();

        }
        catch(Exception e){ 
            Toast.makeText(getApplicationContext(), e.toString(), Toast.LENGTH_LONG).show();
        }  
}
@Override
protected Void doInBackground(Void... params) {
// TODO Auto-generated method stub  
    // HTTP post 
            try { 
                ArrayList<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>();
                HttpClient httpclient = new DefaultHttpClient(); 
                try{
                HttpPost httppost = new HttpPost("http://192.168.0.2/android/test.php");

                StringEntity se = new StringEntity("envelope",HTTP.UTF_8);
                httppost.setEntity(se); 
                HttpParams httpParameters = new BasicHttpParams();
                // Set the timeout in milliseconds until a connection is established.
                int timeoutConnection = 3000;
                HttpConnectionParams.setConnectionTimeout(httpParameters, timeoutConnection);
                // Set the default socket timeout (SO_TIMEOUT) 
                // in milliseconds which is the timeout for waiting for data.
                int timeoutSocket = 3000;
                HttpConnectionParams.setSoTimeout(httpParameters, timeoutSocket); 

                httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
                HttpResponse response = httpclient.execute(httppost);
                HttpEntity entity = response.getEntity();
                is = entity.getContent(); 
                }
                catch(Exception e){
                    Toast.makeText(getApplicationContext(), e.toString(), Toast.LENGTH_LONG).show();
                }
                //buffered reader
                try{
                BufferedReader reader = new BufferedReader(new InputStreamReader(
                        is, "iso-8859-1"), 80);
                sb = new StringBuilder();
                sb.append(reader.readLine() + "\n");
                String line = "0";
                while ((line = reader.readLine()) != null) {
                    sb.append(line + "\n");
                }
                is.close();
                result = sb.toString();
                }
                catch(Exception e){
                    Toast.makeText(getApplicationContext(), e.toString(), Toast.LENGTH_LONG).show();
                }
                try{
                jArray = new JSONArray(result);
                JSONObject json_data = null;
                for (int i = 0; i < jArray.length(); i++) {
                    json_data = jArray.getJSONObject(i); 
                    targetamount=json_data.getString("targetamount");
                    targetmonth=json_data.getString("targetmonth");
                    targetyear = json_data.getString("targetyear"); 
                    al.add(targetmonth); 
                    al1.add(targetyear);
                    al2.add(targetamount);  

                    //listItemCount=al2.size();
                }
            }
            catch(JSONException e){
                Toast.makeText(getApplicationContext(), e.toString(), Toast.LENGTH_LONG).show();
            }   
            } catch (ParseException e) {
            //  Log.e("log_tag", "Error in http connection" + e.toString());
                Toast.makeText(getApplicationContext(), e.toString(), Toast.LENGTH_LONG).show();
            }  
             catch (Exception e) {
                    //  Log.e("log_tag", "Error in    http connection" + e.toString());
                            Toast.makeText(getApplicationContext(), e.toString(), Toast.LENGTH_LONG).show();
                    }        
    return null; 
}
 } 


class DataAdapter extends BaseAdapter {

Context mContext; 
  private LayoutInflater mInflater;
 String targetmonth;
  String targetyear;
 String targetamount; 
  String[] month;
  String[] year;
  String[] amount;


  public DataAdapter(Context c, String[] month, String[] year, String[] amount) {
this.month = month;
this.year = year;
this.amount = amount; 
mContext = c;
mInflater = LayoutInflater.from(c); 
 } 
  public int getCount() {
 return month.length;
 } 
public Object getItem(int position) {
return position;
 } 
    public long getItemId(int position) {
   return position;
  } 
 public View getView(int position, View convertView, ViewGroup parent) {
     ViewHolder holder = null;

holder = new ViewHolder();

if (convertView == null) {
    convertView = mInflater.inflate(R.layout.customgrid, parent, false);
    holder = new ViewHolder();
    holder.month = (TextView) convertView
            .findViewById(R.id.targetmonth); 
    holder.year = (TextView) convertView.findViewById(R.id.targetyear); 
    holder.amount = (TextView) convertView
            .findViewById(R.id.targetamount); 


        //Onclick for your tagetyear TextView
  holder.year = (TextView) convertView.findViewById(R.id.targetyear); 

    holder.year.setOnClickListener(new OnClickListener() {

    @SuppressWarnings("unused")
public void onClick(View v) {
    // TODO Auto-generated method stub
 }
});
   }


    if (position == 0) {
        convertView.setTag(holder);
    }
} else {
    holder = (ViewHolder) convertView.getTag();
}

try {

    holder.month.setText(month[position]);
    holder.year.setText(year[position]);
    holder.amount.setText(amount[position]);
} catch (Exception e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
} 
return convertView;
  } 

   static class ViewHolder {
     TextView month;
    TextView year, amount; 
}

}

  }
于 2013-07-13T05:08:02.693 回答