Download xml file & write to sd card

1. Download xml file

The solution that suited me best was largely built on this stackoverflow entry. I put it in an AsyncTask.

Remember manifext update:

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

In main activity.

URL url = null;
try {
   url = new URL("");
} catch (MalformedURLException e) {
new AsyncNetworkConnectionInstant(this).execute(url);

Create class AsyncNetworkConnectionInstant.


public class AsyncNetworkConnectionInstant extends
		AsyncTask<URL, Integer, Long> {

	protected Long doInBackground(URL... urls) {
		long downloadedSize = 0;
		try {
			URL url = urls[0];
			// create the new connection
			HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection();
			// set up some things on the connection
			// and connect!
			File dir = new File("/sdcard/" + "rm1/");
			if(dir.exists()==false) {
				Log.e("AsNCI", "Creating dir");
			File file = new File(dir, "ecb1.xml");
			FileOutputStream fileOutput = new FileOutputStream(file);
			InputStream inputStream = urlConnection.getInputStream();
			int totalSize = urlConnection.getContentLength();
			downloadedSize = 0;
			byte[] buffer = new byte[1024];
			int bufferLength = 0; // used to store a temporary size of the buffer
			while ((bufferLength = > 0)
				fileOutput.write(buffer, 0, bufferLength);
				downloadedSize += bufferLength;
				int progress = (int) (downloadedSize * 100 / totalSize);
		} catch (MalformedURLException e) {
		} catch (ProtocolException e) {
		} catch (FileNotFoundException e) {
		} catch (IOException e) {
		return downloadedSize;
    protected void onPostExecute(Long result) {
        //Do something with file

 2. Write to sd card

Found that either of these methods are possible.

A. Simplest is to use the Android Virtual Device Manager. Edit your AVD and insert a value into SD card size.

B. In a command prompt go to androidsdk\tools and enter

mksdcard 64M MyNewSdCard

Then either edit your AVD again and enter the SD card path or continue from the command prompt by entering

emulator -avd  -sdcard MyNewSdCard

Whichever method used, once the emulator is running it can be explored from Eclipse by selecting Window, Open perspective, other. DDNS, File Explorer (top of panel on right). The sdcard can be found under the mnt folder.

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