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String line = null;

// Read Server Response
while ((line = reader.readLine()) != null) {
sb.append(line);
break;
}
return sb.toString();
} catch (Exception e) {
return new String("Exception: " + e.getMessage());
}
}
}
InsertData task = new InsertData();
task.execute(umbrella_num);
}

private void rent_db(String rent_num) {
class InsertData extends AsyncTask<String, Void, String> {
ProgressDialog loading;
@Override
protected void onPreExecute() {
super.onPreExecute();
loading = ProgressDialog.show(RentActivity.this, "Please Wait", null, true, true);
}
@Override
protected void onPostExecute(String s) {
super.onPostExecute(s);
loading.dismiss();
Toast.makeText(getApplicationContext(), s, Toast.LENGTH_LONG).show();
}
@Override
protected String doInBackground(String... params) {

try {
String num = (String) params[0];

String link = "http://192.168.0.77/rent_num_db.php";
String data = URLEncoder.encode("rent_num", "UTF-8") + "=" +
URLEncoder.encode(num, "UTF-8");

URL url = new URL(link);
URLConnection conn = url.openConnection();

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