Export Contacts as a VCF file in Android

public class VCardActivity extends Activity {
Cursor cursor;
ArrayList<String> vCard;
String vfile;
static Context mContext;

/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
mContext = VCardActivity.this;
getVCF();
}

public static void getVCF() {
final String vfile = "Contacts.vcf";
Cursor phones = mContext.getContentResolver().query(
ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null,
                                  null, null, null);
phones.moveToFirst();
for (int i = 0; i < phones.getCount(); i++) {
String lookupKey = phones.getString(phones
.getColumnIndex(ContactsContract.Contacts.LOOKUP_KEY));
Uri uri = Uri.withAppendedPath(
ContactsContract.Contacts.CONTENT_VCARD_URI,
                                                 lookupKey);
AssetFileDescriptor fd;
try {
fd = mContext.getContentResolver().openAssetFileDescriptor(uri, "r");
FileInputStream fis = fd.createInputStream();
byte[] buf = new byte[(int) fd.getDeclaredLength()];
fis.read(buf);
String VCard = new String(buf);
String path = Environment.getExternalStorageDirectory()
.toString() + File.separator + vfile;
FileOutputStream mFileOutputStream = new FileOutputStream(path,
true);
mFileOutputStream.write(VCard.toString().getBytes());
phones.moveToNext();
Log.d("Vcard", VCard);
} catch (Exception e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
}
}
}

Enjoy :-)

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