title: Android: Can not send http post
body: <p>I've been banging my head trying to figure out how to send a post method in Android. This is how my code look like:</p>
  
  <pre><code>public class HomeActivity extends Activity implements OnClickListener {
  
      private TextView textView;
  
      @Override
      public void onCreate(Bundle savedInstanceState) {
          super.onCreate(savedInstanceState);
  
          setContentView(R.layout.main);
  
          textView = (TextView) findViewById(R.id.text);
          Button button = (Button)findViewById(R.id.button);
          button.setOnClickListener(this);
  
      }
  
      @Override
      public void onClick(View view) {    
          HttpPost httpMethod = new HttpPost("http://www.example.com/");
          httpMethod.addHeader("Accept", "text/html");
          httpMethod.addHeader("Content-Type", "application/xml");
  
  
          AndroidHttpClient client = AndroidHttpClient.newInstance("Android");
          String result = null;
          try {
              HttpResponse response = client.execute(httpMethod);
              textView.setText(response.toString());
  
              HttpEntity entity = response.getEntity();
  
              Log.i(HomeActivity.class.toString(), result);
              textView.setText("Invoked webservice");
          } catch (IOException e) {
              e.printStackTrace();
              Log.e(HomeActivity.class.toString(), e.getMessage());
              textView.setText("Something wrong:" + e.getMessage());
          }
      }
  }
  </code></pre>
  
  <p>This is the exception that I get:</p>
  
  <pre><code>I/ARMAssembler(   59): generated scanline__00000177:03515104_00001001_00000000 [
   91 ipp] (114 ins) at [0x334348:0x334510] in 1430659 ns
  W/System.err(  272): java.net.UnknownHostException: www.example.com
  W/System.err(  272):    at java.net.InetAddress.lookupHostByName(InetAddress.jav
  a:513)
  W/System.err(  272):    at java.net.InetAddress.getAllByNameImpl(InetAddress.jav
  a:278)
  W/System.err(  272):    at java.net.InetAddress.getAllByName(InetAddress.java:24
  2)
  W/System.err(  272):    at org.apache.http.impl.conn.DefaultClientConnectionOper
  ator.openConnection(DefaultClientConnectionOperator.java:136)
  W/System.err(  272):    at org.apache.http.impl.conn.AbstractPoolEntry.open(Abst
  ractPoolEntry.java:164)
  W/System.err(  272):    at org.apache.http.impl.conn.AbstractPooledConnAdapter.o
  pen(AbstractPooledConnAdapter.java:119)
  W/System.err(  272):    at org.apache.http.impl.client.DefaultRequestDirector.ex
  ecute(DefaultRequestDirector.java:348)
  W/System.err(  272):    at org.apache.http.impl.client.AbstractHttpClient.execut
  e(AbstractHttpClient.java:555)
  W/System.err(  272):    at org.apache.http.impl.client.AbstractHttpClient.execut
  e(AbstractHttpClient.java:487)
  W/System.err(  272):    at org.apache.http.impl.client.AbstractHttpClient.execut
  e(AbstractHttpClient.java:465)
  W/System.err(  272):    at android.net.http.AndroidHttpClient.execute(AndroidHtt
  pClient.java:243)
  W/System.err(  272):    at com.collaboapp.android.HomeActivity.onClick(HomeActiv
  ity.java:152)
  W/System.err(  272):    at android.view.View.performClick(View.java:2408)
  W/System.err(  272):    at android.view.View$PerformClick.run(View.java:8816)
  W/System.err(  272):    at android.os.Handler.handleCallback(Handler.java:587)
  W/System.err(  272):    at android.os.Handler.dispatchMessage(Handler.java:92)
  W/System.err(  272):    at android.os.Looper.loop(Looper.java:123)
  W/System.err(  272):    at android.app.ActivityThread.main(ActivityThread.java:4
  627)
  W/System.err(  272):    at java.lang.reflect.Method.invokeNative(Native Method)
  W/System.err(  272):    at java.lang.reflect.Method.invoke(Method.java:521)
  W/System.err(  272):    at com.android.internal.os.ZygoteInit$MethodAndArgsCalle
  r.run(ZygoteInit.java:868)
  W/System.err(  272):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.ja
  va:626)
  W/System.err(  272):    at dalvik.system.NativeStart.main(Native Method)
  E/class android.HomeActivity(  272): www.example.com
  D/ThrottleService(   59): finally have imsi - retreiving data
  D/ThrottleService(   59): onPollAlarm - roaming =false, read =0, written =0, new
   total =0
  D/SntpClient(   59): request time failed: java.net.SocketException: Address fami
  ly not supported by protocol
  </code></pre>
  
  <p>What am I doing wrong here? Is there anything that I may need to configure from the Android emulator to get this working? </p>
  
  <p>Thank you for your help.</p>