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finish();
}

public void onClick_purchase(View view) {
Intent intent205 = new Intent(getApplicationContext(),LoginMainActivity.class);
Toast.makeText(this, " 구매완료!", Toast.LENGTH_SHORT).show();
startActivity(intent205);
finish();
}

private void insertoToDatabase(String num) {
class InsertData extends AsyncTask<String, Void, String> {
ProgressDialog loading;
@Override
protected void onPreExecute() {
super.onPreExecute();
loading = ProgressDialog.show(ReturnActivity.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_return = (String) params[0];

String link = "http://192.168.0.77/ulm_return_db.php";
String data = URLEncoder.encode("ulm_return", "UTF-8") + "=" +
URLEncoder.encode(num_return, "UTF-8");

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

conn.setDoOutput(true);
OutputStreamWriter wr = new OutputStreamWriter(conn.getOutputStream());

wr.write(data);
wr.flush();

BufferedReader reader = new BufferedReader(new

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