package com.example.fetchdata;
import androidx.appcompat.app.AppCompatActivity;
import android.app.ProgressDialog;
import android.os.Bundle;
import android.os.Handler;
import android.view.View;
import android.widget.ArrayAdapter;
import com.example.fetchdata.databinding.ActivityMainBinding;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.ArrayList;
public class MainActivity extends AppCompatActivity {
ActivityMainBinding binding;
ArrayList<String> userList;
ArrayAdapter<String> listAdapter;
Handler mainHandler = new Handler();
ProgressDialog progressDialog;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
binding = ActivityMainBinding.inflate(getLayoutInflater());
setContentView(binding.getRoot());
initializeUserlist();
new fetchData().start();
binding.fetchDatabtn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
new fetchData().start();
}
});
}
private void initializeUserlist() {
userList = new ArrayList<>();
listAdapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1,userList);
binding.userlist.setAdapter(listAdapter);
}
class fetchData extends Thread {
String data = "";
String un="...........";
String pass="........";
@Override
public void run() {
mainHandler.post(new Runnable() {
@Override
public void run() {
progressDialog = new ProgressDialog(MainActivity.this);
progressDialog.setMessage("Melumat....");
progressDialog.setCancelable(false);
progressDialog.show();
}
});
try {
URL url = new URL("http://......./......./hs/queue/product_data/?data=");
HttpURLConnection httpURLConnection = (HttpURLConnection) url.openConnection();
InputStream inputStream = httpURLConnection.getInputStream();
BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(inputStream));
String line;
while ((line = bufferedReader.readLine()) !=null){
data = data + line;
}
if (!data.isEmpty()){
JSONObject jsonObject = new JSONObject(data);
JSONArray users = jsonObject.getJSONArray("Users");
userList.clear();
for (int i=0; i<users.length(); i++){
JSONObject names = users.getJSONObject(i);
String name = names.getString("uname");
userList.add(name);
}
}
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} catch (JSONException e) {
e.printStackTrace();
}
mainHandler.post(new Runnable() {
@Override
public void run() {
if (progressDialog.isShowing())
progressDialog.dismiss();
listAdapter.notifyDataSetChanged();
}
});
}
}
}
///////////////////////////
json file
{
"uname": "Позиция не найдено!",
"id_barcode": "Позиция не найдено!"
}
Простой
