Tutorial 051-1, internet, http Post request

August 17, 2011   ·   0 Comments

Doing HTTP POST with the current SDK

 


<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
      package="com.powenko.Tutorial_internet_post"
      android:versionCode="1"
      android:versionName="1.0">
    <uses-sdk android:minSdkVersion="4" />

    <application android:icon="@drawable/icon" android:label="@string/app_name">
        <activity android:name=".Tutorial_internet_postActivity"
                  android:label="@string/app_name">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

    <uses-permission android:name="android.permission.INTERNET"/>
</manifest>

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    >
<TextView
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:text="@string/hello"
    android:id="@+id/TextView01"
    />
</LinearLayout>

package com.powenko.Tutorial_internet_post;

import java.io.BufferedInputStream;
import java.io.IOException;
import java.io.InputStream;
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.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 org.apache.http.util.ByteArrayBuffer;

import android.app.Activity;
import android.os.Bundle;
import android.widget.TextView;

public class Tutorial_internet_postActivity extends Activity {
    /** Called when the activity is first created. */

	TextView m_TextView01;
	//= (ImageButton)findViewById(R.id.ImageView01);

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        m_TextView01=(TextView)findViewById(R.id.TextView01);
        Internet_Http_postData();
    }

    public void Internet_Http_postData() {
        // Create a new HttpClient and Post Header
        HttpClient httpclient = new DefaultHttpClient();
        HttpPost httppost = new HttpPost("http://www.powenko.com");

        try {
            // Add your data
            List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(2);
            nameValuePairs.add(new BasicNameValuePair("id", "12345"));
            nameValuePairs.add(new BasicNameValuePair("stringdata", "AndDev is Cool!"));
            httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));

            // Execute HTTP Post Request
            HttpResponse httpResponse = httpclient.execute(httppost);

            InputStream is = httpResponse.getEntity().getContent();
            BufferedInputStream bis = new BufferedInputStream(is);
            ByteArrayBuffer baf = new ByteArrayBuffer(20);

             int current = 0;
             while((current = bis.read()) != -1){
                    baf.append((byte)current);
             }  

            /* Convert the Bytes read to a String. */
             String text = new String(baf.toByteArray());
             m_TextView01.setText(text);

            /*
            if(httpResponse.getStatusLine().getStatusCode() == 200)
	        { 

	           String  strResult2 = EntityUtils.toString(httpResponse.getEntity());
	           m_TextView01.setText(strResult2);
	        }
	        else
	        {
	        	m_TextView01.setText("Error Response: "+httpResponse.getStatusLine().toString());
	        }*/
        }  catch (ClientProtocolException e)
        {
       	 m_TextView01.setText(e.getMessage().toString());
          e.printStackTrace();
        }
        catch (IOException e)
        {
       	 m_TextView01.setText(e.getMessage().toString());
          e.printStackTrace();
        }
        catch (Exception e)
        {
       	 m_TextView01.setText(e.getMessage().toString());
          e.printStackTrace();
        }
    } 

}

sample code:

"Tutorial_internet_getActivity"
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