Android的语音命令做httppost [英] android voice command do httppost

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问题描述

我得到语音识别的该例子。我加了一些$ C $下一个httppost命令。我想,当我说这个词DOG做出httppost。一切工作正常,但是当我说的一句话狗时,它应该做的我httppost我得到这些错误:

  05-25 21:31:24.889:D / AndroidRuntime(15191):关闭虚拟机
05-25 21:31:24.889:W / dalvikvm(15191):主题ID = 1:螺纹退出与未捕获的异常(组= 0x40aab300)
05-25 21:31:24.909:E / AndroidRuntime(15191):致命异常:主要
05-25 21:31:24.909:E / AndroidRuntime(15191):java.lang.RuntimeException的:不提供结果ResultInfo {谁= NULL,请求= 1001,结果= -1,数据= {意向(有临时演员)}}到活动{com.rakesh.voicerecognitionexample / com.rakesh.voicerecognitionexample.VoiceRecognitionActivity}:android.os.NetworkOnMainThreadException
05-25 21:31:24.909:E / AndroidRuntime(15191):在android.app.ActivityThread.deliverResults(ActivityThread.java:3267)
05-25 21:31:24.909:E / AndroidRuntime(15191):在android.app.ActivityThread.handleSendResult(ActivityThread.java:3310)
05-25 21:31:24.909:E / AndroidRuntime(15191):在android.app.ActivityThread.access $ 1100(ActivityThread.java:142)
05-25 21:31:24.909:E / AndroidRuntime(15191):在android.app.ActivityThread $ H.handleMessage(ActivityThread.java:1256)
05-25 21:31:24.909:E / AndroidRuntime(15191):在android.os.Handler.dispatchMessage(Handler.java:99)
05-25 21:31:24.909:E / AndroidRuntime(15191):在android.os.Looper.loop(Looper.java:137)
05-25 21:31:24.909:E / AndroidRuntime(15191):在android.app.ActivityThread.main(ActivityThread.java:4931)
05-25 21:31:24.909:E / AndroidRuntime(15191):在java.lang.reflect.Method.invokeNative(本机方法)
05-25 21:31:24.909:E / AndroidRuntime(15191):在java.lang.reflect.Method.invoke(Method.java:511)
05-25 21:31:24.909:E / AndroidRuntime(15191):在com.android.internal.os.ZygoteInit $ MethodAndArgsCaller.run(ZygoteInit.java:791)
05-25 21:31:24.909:E / AndroidRuntime(15191):在com.android.internal.os.ZygoteInit.main(ZygoteInit.java:558)
05-25 21:31:24.909:E / AndroidRuntime(15191):在dalvik.system.NativeStart.main(本机方法)
05-25 21:31:24.909:E / AndroidRuntime(15191):由:android.os.NetworkOnMainThreadException
05-25 21:31:24.909:E / AndroidRuntime(15191):在android.os.StrictMode $ AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1117)
05-25 21:31:24.909:E / AndroidRuntime(15191):在java.net.InetAddress.lookupHostByName(InetAddress.java:385)
05-25 21:31:24.909:E / AndroidRuntime(15191):在java.net.InetAddress.getAllByNameImpl(InetAddress.java:236)
05-25 21:31:24.909:E / AndroidRuntime(15191):在java.net.InetAddress.getAllByName(InetAddress.java:214)
05-25 21:31:24.909:E / AndroidRuntime(15191):在org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:137)
05-25 21:31:24.909:E / AndroidRuntime(15191):在org.apache.http.impl.conn.AbstractPoolEntry.open(AbstractPoolEntry.java:164)
05-25 21:31:24.909:E / AndroidRuntime(15191):在org.apache.http.impl.conn.AbstractPooledConnAdapter.open(AbstractPooledConnAdapter.java:119)
05-25 21:31:24.909:E / AndroidRuntime(15191):在org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:360)
05-25 21:31:24.909:E / AndroidRuntime(15191):在org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:555)
05-25 21:31:24.909:E / AndroidRuntime(15191):在org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:487)
05-25 21:31:24.909:E / AndroidRuntime(15191):在org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:465)
05-25 21:31:24.909:E / AndroidRuntime(15191):在com.rakesh.voicerecognitionexample.VoiceRecognitionActivity.cici(VoiceRecognitionActivity.java:157)
05-25 21:31:24.909:E / AndroidRuntime(15191):在com.rakesh.voicerecognitionexample.VoiceRecognitionActivity.onActivityResult(VoiceRecognitionActivity.java:113)
05-25 21:31:24.909:E / AndroidRuntime(15191):在android.app.Activity.dispatchActivityResult(Activity.java:5192)
05-25 21:31:24.909:E / AndroidRuntime(15191):在android.app.ActivityThread.deliverResults(ActivityThread.java:3263)
05-25 21:31:24.909:E / AndroidRuntime(15191):11 ...更多
 

下面是我的code:

 包com.rakesh.voicerecognitionexample;

进口java.io.IOException异常;
进口的java.util.ArrayList;
进口的java.util.List;

进口org.apache.http.NameValuePair;
进口org.apache.http.client.ClientProtocolException;
进口org.apache.http.client.HttpClient;
进口org.apache.http.client.entity.UrlEn codedFormEntity;
进口org.apache.http.client.methods.HttpPost;
进口org.apache.http.impl.client.DefaultHttpClient;
进口org.apache.http.message.BasicNameValuePair;

进口android.app.Activity;
进口android.app.SearchManager;
进口android.content.Intent;
进口android.content.pm.PackageManager;
进口android.content.pm.ResolveInfo;
进口android.os.Bundle;
进口android.speech.RecognizerIntent;
进口android.view.View;
进口android.widget.AdapterView;
进口android.widget.ArrayAdapter;
进口android.widget.Button;
进口android.widget.EditText;
进口android.widget.ListView;
进口android.widget.Spinner;
进口android.widget.Toast;

公共类VoiceRecognitionActivity延伸活动{
    私有静态最终诠释VOICE_RECOGNITION_REQUEST_ code = 1001;

    私人的EditText metTextHint;
    私人的ListView mlvTextMatches;
    私人微调msTextMatches;
    私人按钮mbtSpeak;

    @覆盖
    公共无效的onCreate(包savedInstanceState){
        super.onCreate(savedInstanceState);
        的setContentView(R.layout.activity_voice_recognition);
        metTextHint =(EditText上)findViewById(R.id.etTextHint);
        mlvTextMatches =(ListView控件)findViewById(R.id.lvTextMatches);
        msTextMatches =(微调)findViewById(R.id.sNoOfMatches);
        mbtSpeak =(按钮)findViewById(R.id.btSpeak);
    }

    公共无效checkVoiceRecognition(){
        //检查语音识别是present
        PackageManager下午= getPackageManager();
        名单< ResolveInfo>活动= pm.queryIntentActivities(新意图(
                RecognizerIntent.ACTION_RECOGNIZE_SPEECH),0);
        如果(activities.size()== 0){
            mbtSpeak.setEnabled(假);
            Toast.makeText(这一点,语音识别不是present
                    Toast.LENGTH_SHORT).show();
        }
    }

    公共无效说话(查看视图){
        意向意图=新的意图(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);
        //指定调用包,以确定您的应用程序
        intent.putExtra(RecognizerIntent.EXTRA_CALLING_PACKAGE,的getClass()
                。.getPackage()的getName());

        //显示一个提示,关于他应该说些什么用户。
        intent.putExtra(RecognizerIntent.EXTRA_PROMPT,metTextHint.getText()
                的ToString());

        //给出一个提示什么用户会说识别器
        intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL,
                RecognizerIntent.LANGUAGE_MODEL_WEB_SEARCH);

        //如果没有选择匹配的编号,然后返回显示敬酒消息
        如果(msTextMatches.getSelectedItemPosition()== AdapterView.INVALID_POSITION){
            Toast.makeText(这一点,请选择微调匹配的号,
                    Toast.LENGTH_SHORT).show();
            返回;
        }

        INT noOfMatches =的Integer.parseInt(msTextMatches.getSelectedItem()
                的ToString());
        //指定你要多少成绩获得。结果将是
        //排序,其中的第一个结果是具有较高的信心。

        intent.putExtra(RecognizerIntent.EXTRA_MAX_RESULTS,noOfMatches);

        startActivityForResult(意向,VOICE_RECOGNITION_REQUEST_ code);
    }

    @覆盖
    保护无效onActivityResult(INT申请code,INT结果code,意图数据){
        如果(要求code == VOICE_RECOGNITION_REQUEST_ code)

            //如果语音识别成功,则它返回RESULT_OK
            如果(结果code == RESULT_OK){

                ArrayList的<字符串> textMatchList =数据
                .getStringArrayListExtra(RecognizerIntent.EXTRA_RESULTS);

                如果(!textMatchList.isEmpty()){
                    //如果第一场比赛中包含了搜索字
                    //然后启动网络搜索。
                    如果(textMatchList.get(0)。载(搜索)){

                        字符串searchQuery = textMatchList.get(0).replace(搜索,
                        );
                        搜索意图=新的意图(Intent.ACTION_WEB_SEARCH);
                        sea​​rch.putExtra(SearchManager.QUERY,searchQuery);
                        startActivity(搜索);
                    }否则,如果(textMatchList.get(0)。载(狗)){
                        postTo();
                } 其他 {
                        //填充匹配
                        mlvTextMatches
                        .setAdapter(新ArrayAdapter<字符串>(这一点,
                                android.R.layout.simple_list_item_1,
                                textMatchList));
                    }

                }
            //结果code的各种错误。
            }否则,如果(结果code == RecognizerIntent.RESULT_AUDIO_ERROR){
                showToastMessage(音频错误);
            }否则,如果(结果code == RecognizerIntent.RESULT_CLIENT_ERROR){
                showToastMessage(客户端错误);
            }否则,如果(结果code == RecognizerIntent.RESULT_NETWORK_ERROR){
                showToastMessage(网络错误);
            }否则,如果(结果code == RecognizerIntent.RESULT_NO_MATCH){
                showToastMessage(不匹配);
            }否则,如果(结果code == RecognizerIntent.RESULT_SERVER_ERROR){
                showToastMessage(服务器错误);
            }
        super.onActivityResult(要求code,因此code,数据);
    }
    无效showToastMessage(字符串消息){
        Toast.makeText(此,信息,Toast.LENGTH_SHORT).show();
    }





    公共无效postTo()
    {

            HttpClient的HttpClient的=新DefaultHttpClient();
            HttpPost httppost =新HttpPost(http://mysite.com/script.php);
         尝试 {
           名单<的NameValuePair> namevaluepairs中=新的ArrayList<的NameValuePair>(2);
           nameValuePairs.add(新BasicNameValuePair(消息,cracanel));
           httppost.setEntity(新UrlEn codedFormEntity(namevaluepairs中));
           httpclient.execute(httppost);
         }赶上(ClientProtocolException E){
             // TODO自动生成的catch块
         }赶上(IOException异常E){
             // TODO自动生成的catch块
         }



    }

}
 

解决方案

它是一种NetworkOnMainThread例外。你不能在主UI线程上运行的网络相关的操作。您应该使用AsyncTask的用于这一目的。

http://developer.android.com/reference/android/os/NetworkOnMainThreadException.html

有关的AsyncTask

http://developer.android.com/reference/android/os/ AsyncTask.html

您也可以创建自己的线程,并执行httppost。但要确保不要在backgroudn线程更新UI。 Asyntask使你更容易

例如:

 类TheTask扩展的AsyncTask<虚空,虚空,虚空>
{
    @覆盖
    在preExecute保护无效(){
        // TODO自动生成方法存根
        super.on preExecute();
                    // UI线程调用。
                    //显示进度对话框
    }

    @覆盖
    保护无效onPostExecute(无效的结果){
        // TODO自动生成方法存根
        super.onPostExecute(结果);
                     //在UI线程调用
                     //开除进度对话框
                     // doinbackground计算结果是一个参数,该
                     //可以在这里更新用户界面
    }

    @覆盖
    保护无效doInBackground(虚空......为arg0){
        // TODO自动生成方法存根
                    //在后台线程调用
                    //不更新的用户界面
                    //这里执行HTTP POST
                    postTo(); //这里调用你的POST方法
        返回null;
    }
}
 

用法:

 新TheTask()执行()。 //加载UI线程
 

可以传递参数的AsyncTask的构造。你也可以传递参数直接doinbackground。

I got this example of voice recognition. I added some code for a httppost command. I want, when i say the word DOG to make a httppost. All works fine, but when i say the word DOG and when it's supposed to do my httppost i get these errors:

05-25 21:31:24.889: D/AndroidRuntime(15191): Shutting down VM
05-25 21:31:24.889: W/dalvikvm(15191): threadid=1: thread exiting with uncaught exception (group=0x40aab300)
05-25 21:31:24.909: E/AndroidRuntime(15191): FATAL EXCEPTION: main
05-25 21:31:24.909: E/AndroidRuntime(15191): java.lang.RuntimeException: Failure delivering result ResultInfo{who=null, request=1001, result=-1, data=Intent { (has extras) }} to activity {com.rakesh.voicerecognitionexample/com.rakesh.voicerecognitionexample.VoiceRecognitionActivity}: android.os.NetworkOnMainThreadException
05-25 21:31:24.909: E/AndroidRuntime(15191):    at android.app.ActivityThread.deliverResults(ActivityThread.java:3267)
05-25 21:31:24.909: E/AndroidRuntime(15191):    at android.app.ActivityThread.handleSendResult(ActivityThread.java:3310)
05-25 21:31:24.909: E/AndroidRuntime(15191):    at android.app.ActivityThread.access$1100(ActivityThread.java:142)
05-25 21:31:24.909: E/AndroidRuntime(15191):    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1256)
05-25 21:31:24.909: E/AndroidRuntime(15191):    at android.os.Handler.dispatchMessage(Handler.java:99)
05-25 21:31:24.909: E/AndroidRuntime(15191):    at android.os.Looper.loop(Looper.java:137)
05-25 21:31:24.909: E/AndroidRuntime(15191):    at android.app.ActivityThread.main(ActivityThread.java:4931)
05-25 21:31:24.909: E/AndroidRuntime(15191):    at java.lang.reflect.Method.invokeNative(Native Method)
05-25 21:31:24.909: E/AndroidRuntime(15191):    at java.lang.reflect.Method.invoke(Method.java:511)
05-25 21:31:24.909: E/AndroidRuntime(15191):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:791)
05-25 21:31:24.909: E/AndroidRuntime(15191):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:558)
05-25 21:31:24.909: E/AndroidRuntime(15191):    at dalvik.system.NativeStart.main(Native Method)
05-25 21:31:24.909: E/AndroidRuntime(15191): Caused by: android.os.NetworkOnMainThreadException
05-25 21:31:24.909: E/AndroidRuntime(15191):    at android.os.StrictMode$AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1117)
05-25 21:31:24.909: E/AndroidRuntime(15191):    at java.net.InetAddress.lookupHostByName(InetAddress.java:385)
05-25 21:31:24.909: E/AndroidRuntime(15191):    at java.net.InetAddress.getAllByNameImpl(InetAddress.java:236)
05-25 21:31:24.909: E/AndroidRuntime(15191):    at java.net.InetAddress.getAllByName(InetAddress.java:214)
05-25 21:31:24.909: E/AndroidRuntime(15191):    at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:137)
05-25 21:31:24.909: E/AndroidRuntime(15191):    at org.apache.http.impl.conn.AbstractPoolEntry.open(AbstractPoolEntry.java:164)
05-25 21:31:24.909: E/AndroidRuntime(15191):    at org.apache.http.impl.conn.AbstractPooledConnAdapter.open(AbstractPooledConnAdapter.java:119)
05-25 21:31:24.909: E/AndroidRuntime(15191):    at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:360)
05-25 21:31:24.909: E/AndroidRuntime(15191):    at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:555)
05-25 21:31:24.909: E/AndroidRuntime(15191):    at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:487)
05-25 21:31:24.909: E/AndroidRuntime(15191):    at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:465)
05-25 21:31:24.909: E/AndroidRuntime(15191):    at com.rakesh.voicerecognitionexample.VoiceRecognitionActivity.cici(VoiceRecognitionActivity.java:157)
05-25 21:31:24.909: E/AndroidRuntime(15191):    at com.rakesh.voicerecognitionexample.VoiceRecognitionActivity.onActivityResult(VoiceRecognitionActivity.java:113)
05-25 21:31:24.909: E/AndroidRuntime(15191):    at android.app.Activity.dispatchActivityResult(Activity.java:5192)
05-25 21:31:24.909: E/AndroidRuntime(15191):    at android.app.ActivityThread.deliverResults(ActivityThread.java:3263)
05-25 21:31:24.909: E/AndroidRuntime(15191):    ... 11 more

Here is my code:

package com.rakesh.voicerecognitionexample;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

import org.apache.http.NameValuePair;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
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 android.app.Activity;
import android.app.SearchManager;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.content.pm.ResolveInfo;
import android.os.Bundle;
import android.speech.RecognizerIntent;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ListView;
import android.widget.Spinner;
import android.widget.Toast;

public class VoiceRecognitionActivity extends Activity {
    private static final int VOICE_RECOGNITION_REQUEST_CODE = 1001;

    private EditText metTextHint;
    private ListView mlvTextMatches;
    private Spinner msTextMatches;
    private Button mbtSpeak;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_voice_recognition);
        metTextHint = (EditText) findViewById(R.id.etTextHint);
        mlvTextMatches = (ListView) findViewById(R.id.lvTextMatches);
        msTextMatches = (Spinner) findViewById(R.id.sNoOfMatches);
        mbtSpeak = (Button) findViewById(R.id.btSpeak);
    }

    public void checkVoiceRecognition() {
        // Check if voice recognition is present
        PackageManager pm = getPackageManager();
        List<ResolveInfo> activities = pm.queryIntentActivities(new Intent(
                RecognizerIntent.ACTION_RECOGNIZE_SPEECH), 0);
        if (activities.size() == 0) {
            mbtSpeak.setEnabled(false);
            Toast.makeText(this, "Voice recognizer not present",
                    Toast.LENGTH_SHORT).show();
        }
    }

    public void speak(View view) {
        Intent intent = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);
        // Specify the calling package to identify your application
        intent.putExtra(RecognizerIntent.EXTRA_CALLING_PACKAGE, getClass()
                .getPackage().getName());

        // Display an hint to the user about what he should say.
        intent.putExtra(RecognizerIntent.EXTRA_PROMPT, metTextHint.getText()
                .toString());

        // Given an hint to the recognizer about what the user is going to say
        intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL,
                RecognizerIntent.LANGUAGE_MODEL_WEB_SEARCH);

        // If number of Matches is not selected then return show toast message
        if (msTextMatches.getSelectedItemPosition() == AdapterView.INVALID_POSITION) {
            Toast.makeText(this, "Please select No. of Matches from spinner",
                    Toast.LENGTH_SHORT).show();
            return;
        }

        int noOfMatches = Integer.parseInt(msTextMatches.getSelectedItem()
                .toString());
        // Specify how many results you want to receive. The results will be
        // sorted where the first result is the one with higher confidence.

        intent.putExtra(RecognizerIntent.EXTRA_MAX_RESULTS, noOfMatches);

        startActivityForResult(intent, VOICE_RECOGNITION_REQUEST_CODE);
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        if (requestCode == VOICE_RECOGNITION_REQUEST_CODE)

            //If Voice recognition is successful then it returns RESULT_OK
            if(resultCode == RESULT_OK) {

                ArrayList<String> textMatchList = data
                .getStringArrayListExtra(RecognizerIntent.EXTRA_RESULTS);

                if (!textMatchList.isEmpty()) {
                    // If first Match contains the 'search' word
                    // Then start web search.
                    if (textMatchList.get(0).contains("search")) {

                        String searchQuery = textMatchList.get(0).replace("search",
                        " ");
                        Intent search = new Intent(Intent.ACTION_WEB_SEARCH);
                        search.putExtra(SearchManager.QUERY, searchQuery);
                        startActivity(search);
                    } else if (textMatchList.get(0).contains("dog")) {
                        postTo();
                } else {
                        // populate the Matches
                        mlvTextMatches
                        .setAdapter(new ArrayAdapter<String>(this,
                                android.R.layout.simple_list_item_1,
                                textMatchList));
                    }

                }
            //Result code for various error.    
            }else if(resultCode == RecognizerIntent.RESULT_AUDIO_ERROR){
                showToastMessage("Audio Error");
            }else if(resultCode == RecognizerIntent.RESULT_CLIENT_ERROR){
                showToastMessage("Client Error");
            }else if(resultCode == RecognizerIntent.RESULT_NETWORK_ERROR){
                showToastMessage("Network Error");
            }else if(resultCode == RecognizerIntent.RESULT_NO_MATCH){
                showToastMessage("No Match");
            }else if(resultCode == RecognizerIntent.RESULT_SERVER_ERROR){
                showToastMessage("Server Error");
            }
        super.onActivityResult(requestCode, resultCode, data);
    }
    void showToastMessage(String message){
        Toast.makeText(this, message, Toast.LENGTH_SHORT).show();
    }





    public void postTo()
    {

            HttpClient httpclient = new DefaultHttpClient();
            HttpPost httppost = new HttpPost("http://mysite.com/script.php");
         try {
           List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(2);
           nameValuePairs.add(new BasicNameValuePair("message", "cracanel"));
           httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
           httpclient.execute(httppost);
         } catch (ClientProtocolException e) {
             // TODO Auto-generated catch block
         } catch (IOException e) {
             // TODO Auto-generated catch block
         }



    }

}

解决方案

Its a NetworkOnMainThread exception. You cannot run network related operation on the main ui thread. You should use asynctask for this purpose.

http://developer.android.com/reference/android/os/NetworkOnMainThreadException.html

For asynctask

http://developer.android.com/reference/android/os/AsyncTask.html

You can also create your own thread and execute httppost. But make sure you don't update ui on the backgroudn thread. Asyntask makes it easier for you

Example:

class TheTask extends AsyncTask<Void,Void,Void>
{
    @Override
    protected void onPreExecute() {
        // TODO Auto-generated method stub
        super.onPreExecute();
                    // invoked on the ui thread.
                    // display progress dialog     
    }

    @Override
    protected void onPostExecute(Void result) {
        // TODO Auto-generated method stub
        super.onPostExecute(result);
                     //invoked on the ui thread
                     // dismiss progress dialog  
                     // result of doinbackground computation is a parameter to this
                     // can update ui here
    }

    @Override
    protected Void doInBackground(Void... arg0) {
        // TODO Auto-generated method stub
                    //invoked on the background thread
                    // do not update ui
                    // execute http post here  
                    postTo(); // call your post method here 
        return null;
    }   
}

Usage:

        new TheTask().execute(); // load on ui thread

Can pass parameter to the constructor of asynctask. You can also pass parameter to doinbackground directly.

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