Getting Data From the Web (URLConnection via http)

Getting Data From the Web (URLConnection via http)

What you will learn:You will learn how to download files/data from any URL (useful for reading the returned xml-data from Web2.0-APIs)

Problems/Questions:Write it right below...

Difficulty:1.5 of 5

What it will look like:

Description:
0.)We will use justURL,URLConnectionandInputStreamsto receive data from a txt-file via http from the web. (works with any other dynamic url, toolike the Google Weather APIhttp://www.google.com/ig/api?weather=Schriesheim,Germany)

This is the full Code:

Java:

packageorg.anddev.android.getdatafromtheweb;

importjava.io.BufferedInputStream;
importjava.io.InputStream;
importjava.net.URL;
importjava.net.URLConnection;

importorg.apache.http.util.ByteArrayBuffer;

importandroid.app.Activity;
importandroid.os.Bundle;
importandroid.widget.TextView;

publicclassGetDataFromTheWebextendsActivity{
@Override
publicvoidonCreate(Bundle icicle){
super.onCreate(icicle);

/* We will show the data we read in a TextView. */
TextView tv =newTextView(this);

/* Will be filled and displayed later. */
StringmyString =null;
try{
/* Define the URL we want to load data from. */
URLmyURL =newURL(
"http://www.anddev.org/images/tut/basic/getdatafromtheweb/loadme.txt");
/* Open a connection to that URL. */
URLConnectionucon = myURL.openConnection();

/* Define InputStreams to read
* from the URLConnection. */
InputStreamis = ucon.getInputStream();
BufferedInputStreambis =newBufferedInputStream(is);

/* Read bytes to the Buffer until
* there is nothing more to read(-1). */
ByteArrayBuffer baf =newByteArrayBuffer(50);
intcurrent =0;
while((current = bis.read())!=-1){
baf.append((byte)current);
}

/* Convert the Bytes read to a String. */
myString =newString(baf.toByteArray());
}catch(Exceptione){
/* On any Error we want to display it. */
myString = e.getMessage();
}
/* Show the String on the GUI. */
tv.setText(myString);
this.setContentView(tv);
}
}