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how to pass header api key in volley

I am new to android and volley
I'm straggling with JSON path
spent a lot of time debugging this code but unfortunately could not find the bug, can someone help me find the issue in this code. I am not able to see data on the activity page
import androidx.appcompat.app.AppCompatActivity;
import androidx.recyclerview.widget.LinearLayoutManager;
import androidx.recyclerview.widget.RecyclerView;
import android.os.Bundle;
import com.android.volley.AuthFailureError;
import com.android.volley.Request;
import com.android.volley.RequestQueue;
import com.android.volley.Response;
import com.android.volley.VolleyError;
import com.android.volley.toolbox.JsonObjectRequest;
import com.android.volley.toolbox.Volley;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Map;
public class dailyshop extends AppCompatActivity {
private RecyclerView mRecycler;
private cardAdapter mCardAdapter;
private ArrayList<carditem> mCardList;
private RequestQueue mRequestQueue;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_dailyshop);
mRecycler = findViewById(R.id.recycler_view);
mRecycler.setHasFixedSize(true);
mRecycler.setLayoutManager(new LinearLayoutManager(this));
mCardList = new ArrayList<>();
mRequestQueue = Volley.newRequestQueue(this);
parseJSON();
}
private void parseJSON(){
String url = "https://fortnite-api.theapinetwork.com/store/get";
final JsonObjectRequest request = new JsonObjectRequest(Request.Method.GET, url, null,
new Response.Listener<JSONObject>()
{
#Override
public void onResponse(JSONObject response) {
try {
JSONArray jsonArray = response.getJSONArray("data");
for (int i = 0; i < jsonArray.length(); i++){
JSONObject jsonObject = jsonArray.getJSONObject(i);
String itemName = jsonObject.getString("name");
String imageUrl = jsonObject.getString("background");
int vCount = jsonObject.getInt("cost");
mCardList.add(new carditem(imageUrl,itemName,vCount));
}
mCardAdapter = new cardAdapter(dailyshop.this, mCardList);
mRecycler.setAdapter(mCardAdapter);
} catch (JSONException e) {
e.printStackTrace();
}
}
},
new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
error.printStackTrace();
}
}
){
#Override
public Map<String, String> getHeaders() throws AuthFailureError {
Map<String, String> params = new HashMap<String, String>();
params.put("Authorization", "mycode");
return params;
}
};
mRequestQueue.add(request);
}
}
I tried to use custom API without key in same JSON child and it worked
api json file
{
"lastUpdate":1563408000,
"language":"en",
"data":[
{
"itemId":"0ac5766-6f9355e-6575a4e-abaef79",
"lastUpdate":1563408000,
"store":{
"isFeatured":false,
"isRefundable":true,
"cost":"500",
"occurrences":1,
"isNew":true
},
"item":{
"name":"Glitter",
"description":"",
"type":"emote",
"rarity":"rare",
"costmeticId":null,
"images":{
"icon":"https://fortnite-public-files.theapinetwork.com/emote/a7eb82676b96bc1ff2129ee739d70d4a.png",
"featured":null,
"background":"https://fortnite-public-files.theapinetwork.com/image/0ac5766-6f9355e-6575a4e-abaef79.png",
"information":"https://fortnite-public-files.theapinetwork.com/image/0ac5766-6f9355e-6575a4e-abaef79/item.png"
},
"backpack":{
},
"obtained_type":"vbucks",
"ratings":{
"avgStars":4.18,
"totalPoints":614,
"numberVotes":147
}
}
},
{
"itemId":"d2e8284-fb06feb-ea3fbe3-c41fd8b",
"lastUpdate":1563408000,
"store":{
"isFeatured":false,
"isRefundable":true,
"cost":"800",
"occurrences":3,
"isNew":false
},
"item":{
"name":"Star Wand",
"description":null,
"type":"pickaxe",
"rarity":"rare",
"costmeticId":null,
"images":{
"icon":"https://fortnite-public-files.theapinetwork.com/pickaxe/e0907bc2a6058035c5bf96820da6c21f.png",
"featured":null,
"background":"https://fortnite-public-files.theapinetwork.com/image/d2e8284-fb06feb-ea3fbe3-c41fd8b.png",
"information":"https://fortnite-public-files.theapinetwork.com/image/d2e8284-fb06feb-ea3fbe3-c41fd8b/item.png"
},
"backpack":{
},
"obtained_type":"vbucks",
"ratings":{
"avgStars":4.07,
"totalPoints":789,
"numberVotes":194
}
}
},
{
"itemId":"eb00ead-bb56b45-05e52f8-2398d3a",
"lastUpdate":1563408000,
"store":{
"isFeatured":false,
"isRefundable":true,
"cost":"300",
"occurrences":1,
"isNew":true
},
"item":{
"name":"Scanline",
"description":"",
"type":"wrap",
"rarity":"uncommon",
"costmeticId":null,
"images":{
"icon":"https://fortnite-public-files.theapinetwork.com/wrap/5677d39e97ba5bf8d92e25bc520e7cc0.png",
"featured":null,
"background":"https://fortnite-public-files.theapinetwork.com/image/eb00ead-bb56b45-05e52f8-2398d3a.png",
"information":"https://fortnite-public-files.theapinetwork.com/image/eb00ead-bb56b45-05e52f8-2398d3a/item.png"
},
"backpack":{
},
"obtained_type":"vbucks",
"ratings":{
"avgStars":4.82,
"totalPoints":164,
"numberVotes":34
}
}
},
{
"itemId":"a784814-93b4ea3-3c26b6f-631fac7",
"lastUpdate":1563408000,
"store":{
"isFeatured":false,
"isRefundable":true,
"cost":"500",
"occurrences":1,
"isNew":true
}
}
]
}
I need help with JSON path and if there is something wrong with my code

Try this:
#Override
public Map<String, String> getHeaders() throws AuthFailureError {
String credentials = "username" + ":" + "password";
String base64EncodedCredentials = Base64.encodeToString(credentials.getBytes(), Base64.NO_WRAP);
HashMap<String, String> headers = new HashMap<>();
headers.put("Authorization", "Basic " + base64EncodedCredentials);
return headers;
}

Binding Json Data to Bar chart

I am Creating a App to get Json Data from Web service and Bind it to Bar Chart.
I dont know how to do this. am using MPAndroid library for charts.
help me bind bar chart data from JSON data.
web service:
[
{
"NAME": "601 GRIETA EN CUERPO",
"PERCENTAGE": "46"
},
{
"NAME": "77 ENFRIAMIENTO O DUNTING",
"PERCENTAGE": "18"
},
{
"NAME": "78 PRECALENTAMIENTO",
"PERCENTAGE": "18"
},
{
"NAME": "209 MAL MANEJO",
"PERCENTAGE": "9"
},
{
"NAME": "92 FUGA DE MANOMETRO",
"PERCENTAGE": "9"
}
]
Barchart. java
package com.example.saravanakumars.chart;
/**
* Created by saravanakumars on 9/18/2017.
*/
import android.app.ProgressDialog;
import android.content.DialogInterface;
import android.os.AsyncTask;
import android.os.Bundle;
import android.support.v7.app.AlertDialog;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.ContextMenu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.widget.ListAdapter;
import android.widget.ListView;
import android.widget.SimpleAdapter;
import android.widget.TextView;
import android.widget.Toast;
import com.github.mikephil.charting.charts.BarChart;
import com.github.mikephil.charting.data.BarData;
import com.github.mikephil.charting.data.BarDataSet;
import com.github.mikephil.charting.data.BarEntry;
import com.github.mikephil.charting.utils.ColorTemplate;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import java.util.ArrayList;
import java.util.HashMap;
public class barchart extends AppCompatActivity {
BarChart chart ;
ArrayList<BarEntry> BARENTRY ;
ArrayList<String> BarEntryLabels ;
BarDataSet Bardataset ;
BarData BARDATA ;
private String TAG = MainActivity.class.getSimpleName();
private ProgressDialog pDialog;
private ListView lv;
private static String url = "http://113.193.30.155/MobileService/MobileService.asmx/GetSampleData";
ArrayList<HashMap<String, String>> contactList;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.bar_chart);
contactList = new ArrayList<>();
lv = (ListView) findViewById(R.id.list);
new GetContacts().execute();
// bar chart
chart = (BarChart) findViewById(R.id.barchart);
BARENTRY = new ArrayList<>();
BarEntryLabels = new ArrayList<String>();
AddValuesToBARENTRY();
AddValuesToBarEntryLabels();
Bardataset = new BarDataSet(BARENTRY, "Projects");
BARDATA = new BarData(BarEntryLabels, Bardataset);
Bardataset.setColors(ColorTemplate.COLORFUL_COLORS);
chart.setData(BARDATA);
chart.animateY(3000);
}
});
// registerForContextMenu( txt1 );
}
#Override
public void onCreateContextMenu(ContextMenu menu, View v, ContextMenu.ContextMenuInfo menuInfo)
{
super.onCreateContextMenu(menu, v, menuInfo);
MenuInflater inflater = getMenuInflater();
menu.setHeaderTitle("Select The Action");
inflater.inflate( R.menu.popup_menu,menu );
}
#Override
public boolean onContextItemSelected(MenuItem item){
switch (item.getItemId()) {
case R.id.one:
Toast.makeText(barchart.this,"You Clicked : " + item.getTitle(),Toast.LENGTH_SHORT).show();
break;
case R.id.two:
Toast.makeText(barchart.this,"You Clicked : " + item.getTitle(),Toast.LENGTH_SHORT).show();
break;
}
return true;
}
private class GetContacts extends AsyncTask<Void, Void, Void> {
#Override
protected void onPreExecute() {
super.onPreExecute();
// Showing progress dialog
pDialog = new ProgressDialog(barchart.this);
pDialog.setMessage("Please wait...");
pDialog.setCancelable(false);
pDialog.show();
}
#Override
protected Void doInBackground(Void... arg0) {
HttpHandler sh = new HttpHandler();
// Making a request to url and getting response
String jsonStr = sh.makeServiceCall(url);
Log.e(TAG, "Response from url: " + jsonStr);
if (jsonStr != null) {
try {
JSONArray array = new JSONArray(jsonStr);
for (int i = 0; i < array.length(); i++) {
JSONObject object = (JSONObject) array.get(i);
String NAME = object.getString("NAME");
String PERCENTAGE = object.getString("PERCENTAGE");
int minqty = Integer.parseInt(object.getString("PERCENTAGE"));
HashMap<String, String> contact = new HashMap<>();
BARENTRY.add(minqty);
contact.put("NAME", NAME);
contact.put("PERCENTAGE", PERCENTAGE);
// adding contact to contact list
contactList.add(contact);
}
} catch (final JSONException e) {
Log.e(TAG, "Json parsing error: " + e.getMessage());
runOnUiThread(new Runnable() {
#Override
public void run() {
Toast.makeText(getApplicationContext(),
"Json parsing error: " + e.getMessage(),
Toast.LENGTH_LONG)
.show();
}
});
}
} else {
Log.e(TAG, "Couldn't get json from server.");
runOnUiThread(new Runnable() {
#Override
public void run() {
Toast.makeText(getApplicationContext(),
"Couldn't get json from server. Check LogCat for possible errors!",
Toast.LENGTH_LONG)
.show();
}
});
}
return null;
}
#Override
protected void onPostExecute(Void result) {
super.onPostExecute(result);
// Dismiss the progress dialog
if (pDialog.isShowing())
pDialog.dismiss();
/**
}
}
}

Use gson to make object from your jSON:
YourModelClass yourModelClassObject = gson.fromJson(args[0].toString(), YourModelClass.class);
then get your arrayList and provide it to charts dataset
Use following link to make pojo from your JSON
http://www.jsonschema2pojo.org/

As an alternative, you can use wannacharts.com .. is a api like service, where you can post a Json in the url of the api and the response is a json with a base64 image of the chart (how to decode base64 image in android), or a url to png file with the chart.
the good part is that you dont have to use any external library!
Is free, but previously you must register and pre-set the chart in the chart designer.
Here are the faq's

Android List View - On Click go to a website

Sorry if the question is a bit NEWSBIE type but I am not known to Android :(
So I have The MainActivity.Java that populates a TextView. I fetch data from server using JSON and it gives parameters as id, username, message, date_time, status, type.
What I want is on each Click of the List Item, It goes the website as follows:
http://my_web_site_url/json?id=id_of_the_list_item&status=something
i.e When User clicks on a single List Item, the url redirects using the same id that is retrieved by JSON and is of Each List Item.
How to set and then get each list_item_id and how to go to the website?
Any Help is Appreciated!
My code is:
package something;
import android.app.ProgressDialog;
import android.content.Intent;
import android.os.AsyncTask;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ListAdapter;
import android.widget.ListView;
import android.widget.SimpleAdapter;
import android.widget.Toast;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import java.util.ArrayList;
import java.util.HashMap;
public class MainActivity extends AppCompatActivity {
private String TAG = MainActivity.class.getSimpleName();
private ProgressDialog pDialog;
private ListView lv;
// URL to get contacts JSON
private static String url = "my_website_that_returns_json_data";
ArrayList<HashMap<String, String>> contactList;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
contactList = new ArrayList<>();
lv = (ListView) findViewById(R.id.list);
new GetContacts().execute();
}
/**
* Async task class to get json by making HTTP call
*/
private class GetContacts extends AsyncTask<Void, Void, Void> {
#Override
protected void onPreExecute() {
super.onPreExecute();
// Showing progress dialog
pDialog = new ProgressDialog(MainActivity.this);
pDialog.setMessage("Please wait...");
pDialog.setCancelable(false);
pDialog.show();
}
#Override
protected Void doInBackground(Void... arg0) {
HttpHandler sh = new HttpHandler();
// Making a request to url and getting response
String jsonStr = sh.makeServiceCall(url);
Log.e(TAG, "Response from url: " + jsonStr);
if (jsonStr != null) {
try {
JSONObject jsonObj = new JSONObject(jsonStr);
// Getting JSON Array node
JSONArray result = jsonObj.getJSONArray("result");
// looping through All Contacts
for (int i = 0; i < result.length(); i++) {
JSONObject c = result.getJSONObject(i);
String id = c.getString("id");
String username = c.getString("username");
String message = c.getString("message");
String date_status = "Date: " + c.getString("date_time") + " Status: " + c.getString("status");
// tmp hash map for single contact
HashMap<String, String> result1 = new HashMap<>();
// adding each child node to HashMap key => value
result1.put("id", id);
result1.put("username", username);
result1.put("message", message);
result1.put("date_status", date_status);
// adding contact to contact list
contactList.add(result1);
}
} catch (final JSONException e) {
Log.e(TAG, "Json parsing error: " + e.getMessage());
runOnUiThread(new Runnable() {
#Override
public void run() {
Toast.makeText(getApplicationContext(),
"Json parsing error: " + e.getMessage(),
Toast.LENGTH_LONG)
.show();
}
});
}
} else {
Log.e(TAG, "Couldn't get json from server.");
runOnUiThread(new Runnable() {
#Override
public void run() {
Toast.makeText(getApplicationContext(),
"Couldn't get json from server. Check LogCat for possible errors!",
Toast.LENGTH_LONG)
.show();
}
});
}
return null;
}
#Override
protected void onPostExecute(Void result) {
super.onPostExecute(result);
// Dismiss the progress dialog
if (pDialog.isShowing())
pDialog.dismiss();
/**
* Updating parsed JSON data into ListView
* */
ListAdapter adapter = new SimpleAdapter(
MainActivity.this, contactList,
R.layout.list_item, new String[]{"username", "message",
"date_status"}, new int[]{R.id.username,
R.id.message,R.id.date_status});
lv.setAdapter(adapter);
}
}
}

Use onItemClickListener in your ListView
example using inner class
lv.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick((AdapterView<?> parent,
View view,
int position,
long id)) {
String item = lv.getItemAtPosition(position);
Toast.makeText(this,"You selected : " + item,Toast.LENGTH_SHORT).show();
}
});
in your method you will get position of your data and load your link.

How can i declare all the brand's id globally and pass it as a parameter in http request using shared preference?

I need to pass the brand id values of my json response as a parameter to http request using shared preference.I also need to store the brand id values in my main Activity and retreive it in my AddVehicle activity Please help me.Can i use arraylist? If yes, Then say me how? The id should check with the corresponding name and it should be displayed on my 2nd activity(AddVehicle)
Currently i have passed only one brand detail in my main Activity,but instead i need to pass all the id dynamically under one common variable?
My API response
{
"status": 1,
"data": [
{
"id": 1,----> brand id
"name": "AUDI",
"code": "AUDI",
"image": "",
"status": "1",
"created_at": "2016-09-27 00:07:38",
"updated_at": "2016-09-27 00:07:38"
},
{
"id": 2-----> brand id
"name": "Bravian Motor Works",
"code": "BMW",
"image": "",
"status": "1",
"created_at": "2016-09-27 00:07:58",
"updated_at": "2016-09-27 00:07:58"
},
{
"id": 3,---->brand id
"name": "AB Volvo",
"code": "VOLVO",
"image": "",
"status": "1",
"created_at": "2016-09-27 00:08:36",
"updated_at": "2016-09-27 00:08:36"
},
{
"id": 4,-----> brand id
"name": "Ford Motor Company",
"code": "FORD",
"image": "",
"status": "1",
"created_at": "2016-09-27 00:11:51",
"updated_at": "2016-09-27 00:11:51"
},
{
"id": 5,-----> brand id
"name": "Maruti Suzuki",
"code": "Maruti",
"image": "",
"status": "1",
"created_at": "2016-09-27 00:12:14",
"updated_at": "2016-09-27 00:12:14"
}
],
"msg": "success",
"info": "data list"
}
MainActivity
package com.example.addvehicle;
import android.content.Intent;
import android.net.Uri;
import android.os.AsyncTask;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.AdapterView;
import android.widget.Button;
import android.widget.CompoundButton;
import android.widget.EditText;
import android.widget.RadioButton;
import android.widget.Spinner;
import android.widget.TextView;
import com.google.android.gms.appindexing.Action;
import com.google.android.gms.appindexing.AppIndex;
import com.google.android.gms.appindexing.Thing;
import com.google.android.gms.common.api.GoogleApiClient;
import org.apache.http.NameValuePair;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.HttpResponse;
import org.apache.http.util.EntityUtils;
import org.json.JSONException;
import org.json.JSONObject;
import org.json.JSONArray;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import static com.example.addvehicle.R.string.brand;
public class MainActivity extends AppCompatActivity {
private String TAG = MainActivity.class.getSimpleName();
ArrayList<String> brandListArray = new ArrayList<String>();
ArrayList<String> modelListArray = new ArrayList<String>();
Button addVehicleBtn;
EditText AddVehicle_Regno, kmscovered;
RadioButton petrol, Diesel, fullyloaded, Basicmodel;
TextView textView8, textViewkms;
Spinner AddspinnerMake, AddspinnerModel, AddspinnerYear;
private static String url = "http://garage.kaptastech.mobi/api/5k/master/vehicle";
private String[] values;
ArrayList<String> brandListId;
ArrayList<String> modelListId;
String brandid;
String modelId;
ArrayList<HashMap<String, String>> addVehiclelist;
String jsonStr;
String Regno, fuelType, Brand, Year, Model, variant;
/**
* ATTENTION: This was auto-generated to implement the App Indexing API.
* See https://g.co/AppIndexing/AndroidStudio for more information.
*/
private GoogleApiClient client;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
brandListArray = new ArrayList<String>();
brandListId = new ArrayList<String>();
modelListArray = new ArrayList<String>();
modelListId = new ArrayList<String>();
addVehiclelist = new ArrayList<HashMap<String, String>>();
petrol = (RadioButton) findViewById(R.id.petrol);
Diesel = (RadioButton) findViewById(R.id.diesel);
fullyloaded = (RadioButton) findViewById(R.id.fullyLoaded);
Basicmodel = (RadioButton) findViewById(R.id.basicmodel);
addVehicleBtn = (Button) findViewById(R.id.addVehicleBtn);
AddVehicle_Regno = (EditText) findViewById(R.id.AddVehicle_Regno);
kmscovered = (EditText) findViewById(R.id.kmsCovered);
textView8 = (TextView) findViewById(R.id.textView8);
textViewkms = (TextView) findViewById(R.id.textViewkms);
AddspinnerMake = (Spinner) findViewById(R.id.AddspinnerMake);
AddspinnerModel = (Spinner) findViewById(R.id.AddspinnerModel);
AddspinnerYear = (Spinner) findViewById(R.id.AddspinnerYear);
new Getbrands().execute();
petrol.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
#Override
public void onCheckedChanged(CompoundButton compoundButton, boolean b) {
if (petrol.isChecked()) {
fuelType = petrol.getText().toString();
}
}
});
Diesel.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
#Override
public void onCheckedChanged(CompoundButton compoundButton, boolean b) {
if (Diesel.isChecked()) {
fuelType = Diesel.getText().toString();
}
}
});
AddspinnerMake.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
#Override
public void onItemSelected(AdapterView<?> adapterView, View view, int position, long l) {
Brand = AddspinnerMake.getSelectedItem().toString();
if (position > 0) {
brandid = brandListId.get(position).toString();
//**Get Model execute api//
new Getmodels().execute();
}
}
#Override
public void onNothingSelected(AdapterView<?> adapterView) {
}
});
AddspinnerYear.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
#Override
public void onItemSelected(AdapterView<?> adapterView, View view, int i, long l) {
Year = AddspinnerYear.getSelectedItem().toString();
}
#Override
public void onNothingSelected(AdapterView<?> adapterView) {
}
});
AddspinnerModel.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
#Override
public void onItemSelected(AdapterView<?> adapterView, View view, int position, long l) {
Model = AddspinnerModel.getSelectedItem().toString();
if (position > 0) {
modelId = modelListId.get(position).toString();
}
}
#Override
public void onNothingSelected(AdapterView<?> adapterView) {
}
});
Basicmodel.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
#Override
public void onCheckedChanged(CompoundButton compoundButton, boolean b) {
if (Basicmodel.isChecked()) {
variant = Basicmodel.getText().toString();
}
}
});
fullyloaded.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
#Override
public void onCheckedChanged(CompoundButton compoundButton, boolean b) {
if (fullyloaded.isChecked()) {
variant = fullyloaded.getText().toString();
}
}
});
addVehicleBtn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Regno = AddVehicle_Regno.getText().toString();
new GetVehicle().execute();
Intent intent = new Intent(MainActivity.this, AddVehicle.class);
startActivity(intent);
}
});
// ATTENTION: This was auto-generated to implement the App Indexing API.
// See https://g.co/AppIndexing/AndroidStudio for more information.
client = new GoogleApiClient.Builder(this).addApi(AppIndex.API).build();
}
/**
* ATTENTION: This was auto-generated to implement the App Indexing API.
* See https://g.co/AppIndexing/AndroidStudio for more information.
*/
public Action getIndexApiAction() {
Thing object = new Thing.Builder()
.setName("Main Page") // TODO: Define a title for the content shown.
// TODO: Make sure this auto-generated URL is correct.
.setUrl(Uri.parse("http://[ENTER-YOUR-URL-HERE]"))
.build();
return new Action.Builder(Action.TYPE_VIEW)
.setObject(object)
.setActionStatus(Action.STATUS_TYPE_COMPLETED)
.build();
}
#Override
public void onStart() {
super.onStart();
// ATTENTION: This was auto-generated to implement the App Indexing API.
// See https://g.co/AppIndexing/AndroidStudio for more information.
client.connect();
AppIndex.AppIndexApi.start(client, getIndexApiAction());
}
#Override
public void onStop() {
super.onStop();
// ATTENTION: This was auto-generated to implement the App Indexing API.
// See https://g.co/AppIndexing/AndroidStudio for more information.
AppIndex.AppIndexApi.end(client, getIndexApiAction());
client.disconnect();
}
private class GetVehicle extends AsyncTask<Void, Void, Void> {
#Override
protected void onPreExecute() {
super.onPreExecute();
}
#Override
protected Void doInBackground(Void... arg0) {
HttpClient client = new DefaultHttpClient();
HttpPost httpPost = new HttpPost("http://garage.kaptastech.mobi/api/5k/master/vehicle");
List<NameValuePair> nameValuePair = new ArrayList<NameValuePair>(7);
nameValuePair.add(new BasicNameValuePair("user_id","5"));
nameValuePair.add(new BasicNameValuePair("registration_no", Regno));
nameValuePair.add(new BasicNameValuePair("brand","5"));
nameValuePair.add(new BasicNameValuePair("model", "4"));
nameValuePair.add(new BasicNameValuePair("type", "2"));
nameValuePair.add(new BasicNameValuePair("variant", "2"));
nameValuePair.add(new BasicNameValuePair("year", Year));
try {
httpPost.setEntity(new UrlEncodedFormEntity(nameValuePair));
} catch (UnsupportedEncodingException e) {
// writing error to Log
e.printStackTrace();
}
// Making HTTP Request
try {
HttpResponse response = client.execute(httpPost);
// writing response to log
Log.d("Response from url:", response.toString());
jsonStr = EntityUtils.toString(response.getEntity());
} catch (IOException e) {
e.printStackTrace();
}
try {
/*HttpConnection ht = new HttpConnection();
ht.getVehicle();*/
JSONObject object = new JSONObject(jsonStr);
JSONArray Vehicle = object.getJSONArray("data");
for (int i = 0; i < Vehicle.length(); i++) {
JSONObject c = Vehicle.getJSONObject(i);
String Regno = c.getString("registration_no");
String brand = c.getString("brand");
String model = c.getString("model");
String fueltype = c.getString("type");
String variant = c.getString("variant");
HashMap<String, String> Vl = new HashMap<String, String>();
Vl.put("registration_no", Regno);
Vl.put("brand", brand);
Vl.put("model", model);
Vl.put("type", fueltype);
Vl.put("variant:", variant);
addVehiclelist.add(Vl);
values = new String[]{
"Registration No:" + Regno,
"Brand:" + brand,
"Model:" + model,
"Type:" + fueltype,
"Variant:" + variant,
};
}
} catch (JSONException e) {
e.printStackTrace();
}
return null;
}
#Override
protected void onPostExecute(Void aVoid) {
super.onPostExecute(aVoid);
}
}
private class Getbrands extends AsyncTask<Void, Void, Void> {
#Override
protected void onPreExecute() {
super.onPreExecute();
}
#Override
protected Void doInBackground(Void... arg0) {
HttpClient client = new DefaultHttpClient();
HttpGet httpGet = new HttpGet("http://garage.kaptastech.mobi/api/5k/master/brand");
try {
HttpResponse response = client.execute(httpGet);
// writing response to log
Log.d("Response from url:", response.toString());
jsonStr = EntityUtils.toString(response.getEntity());
} catch (IOException e) {
e.printStackTrace();
}
try {
HttpConnection ht = new HttpConnection();
ht.getbrand();
JSONObject object = new JSONObject(jsonStr);
JSONArray brandArray = object.getJSONArray("data");
brandListArray.clear();
brandListId.clear();
brandListArray.add("Select Brand");
brandListId.add("0");
for (int i = 0; i < brandArray.length(); i++) {
JSONObject gb = brandArray.getJSONObject(i);
brandListArray.add(gb.getString("name"));
brandListId.add(gb.getString("id"));
String[] brandStringArray = new String[brandListArray.size()];
brandStringArray = brandListArray.toArray(brandStringArray);
for (int i1 = 0; i1 < brandStringArray.length; i1++) {
Log.d("String is", (String) brandStringArray[i1]);
}
}
} catch (JSONException e) {
e.printStackTrace();
}
return null;
}
protected void onPostExecute(Void result) {
super.onPostExecute(result);
ArrayAdapter<String> adapter = new ArrayAdapter<String>(MainActivity.this, android.R.layout.simple_spinner_item, brandListArray);
adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
AddspinnerMake.setAdapter(adapter);
}
}
private class Getmodels extends AsyncTask<Void, Void, Void> {
#Override
protected void onPreExecute() {
super.onPreExecute();
}
#Override
protected Void doInBackground(Void... arg0) {
HttpClient client = new DefaultHttpClient();
HttpGet httpGet = new HttpGet("http://garage.kaptastech.mobi/api/5k/master/models/" + brandid);
try {
HttpResponse response = client.execute(httpGet);
// writing response to log
Log.d("Response from url:", response.toString());
jsonStr = EntityUtils.toString(response.getEntity());
} catch (IOException e) {
e.printStackTrace();
}
try {
HttpConnection ht = new HttpConnection();
ht.getmodel();
JSONObject object = new JSONObject(jsonStr);
JSONArray modelArray = object.getJSONArray("data");
modelListArray.clear();
modelListId.clear();
modelListArray.add("Select Model");
modelListId.add("0");
for (int i = 0; i < modelArray.length(); i++) {
JSONObject gm = modelArray.getJSONObject(i);
modelListArray.add(gm.getString("name"));
modelListId.add(gm.getString("id"));
String[] modelStringArray = new String[modelListArray.size()];
modelStringArray = modelListArray.toArray(modelStringArray);
for (int i2 = 0; i2 < modelStringArray.length; i2++) {
Log.d("String is", (String) modelStringArray[i2]);
}
}
} catch (JSONException e) {
e.printStackTrace();
}
return null;
}
protected void onPostExecute(Void result) {
super.onPostExecute(result);
ArrayAdapter<String> adapter = new ArrayAdapter<String>(MainActivity.this, android.R.layout.simple_spinner_dropdown_item, modelListArray);
AddspinnerModel.setAdapter(adapter);
}
}
}
And i need to retreive it on my AddVehicle Activity
AddVehicleActivity
package com.example.addvehicle;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.os.AsyncTask;
import android.util.Log;
import android.widget.ArrayAdapter;
import android.widget.ListAdapter;
import android.widget.ListView;
import android.widget.SimpleAdapter;
import org.apache.http.HttpResponse;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import java.io.IOException;
import java.net.URL;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
public class AddVehicle extends AppCompatActivity {
ListView addVehicleListView;
ArrayList<HashMap<String, String>> VehicleList;
ArrayList<String> brandListId;
private String[] values;
private static String urlString = "http://garage.kaptastech.mobi/api/5k/users/vehicle";
private String TAG = AddVehicle.class.getSimpleName();
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_list);
brandListId = new ArrayList<String>();
VehicleList = new ArrayList<HashMap<String, String>>();
addVehicleListView = (ListView) findViewById(R.id.addVehicleListView);
new GetVehicle().execute();
}
private class GetVehicle extends AsyncTask<Void, Void, Void> {
#Override
protected Void doInBackground(Void... voids) {
HttpConnection ht = new HttpConnection();
String response = ht.getVehicle();
{
try {
HttpClient client = new DefaultHttpClient();
HttpGet get = new HttpGet("http://garage.kaptastech.mobi/api/5k/users/vehicle");
JSONObject Object = new JSONObject(response);
JSONArray Vehicle = Object.getJSONArray("data");
for (int i = 0; i < Vehicle.length(); i++) {
JSONObject c = Vehicle.getJSONObject(i);
String Regno = c.getString("registration_no");
String brand = c.getString("brand_id");
String model = c.getString("model_id");
String fueltype = c.getString("type");
String variant = c.getString("variant");
HashMap<String, String> Vl = new HashMap<String, String>();
Vl.put("registration_no", Regno);
Vl.put("brand_id", brand);
Vl.put("model_id", model);
Vl.put("type", fueltype);
Vl.put("variant:" , variant);
VehicleList.add(Vl);
values = new String[]{
"Registration No:" + Regno,
"Brand Id:" + brand,
"Model Id:" + model,
"Type:" + fueltype,
"Variant:" + variant,
};
}
} catch (final Exception e) {
e.printStackTrace();
}
}
return null;
}
#Override
protected void onPreExecute() {
super.onPreExecute();
}
protected void onPostExecute(Void result) {
super.onPostExecute(result);
ArrayAdapter<String> adapter = new ArrayAdapter<String>(AddVehicle.this,
android.R.layout.simple_list_item_1, android.R.id.text1, values);
//ListAdapter adapter = new SimpleAdapter(AddVehicle.this, VehicleList, R.layout.activity_list, new String[]{"brand_id", "model_id", "registration_no", "type", "variant"}, new int[]{R.id.AddspinnerMake, R.id.AddspinnerModel, R.id.AddVehicle_Regno, R.id.fullyLoaded, R.id.basicmodel});
addVehicleListView.setAdapter(adapter);
adapter.notifyDataSetChanged();
}
}
}

Retrive data from database to java

I have a problem to view a date that I receive from my database. Let me explain what I'm doing. I have a database where there is a table called rate1 which is formed from a single column called value which it contains double numbers. My intent is to take all the data in this column, do the average and return it in my java code. I wanto to display the average in a TextView. My problem is that I do not see anything on the TextView. Can anyone tell me where I'm wrong, and if can he give me solutions to my mistakes? Now I add the code:
This is the Average.java:
import android.app.ProgressDialog;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.widget.TextView;
import android.widget.Toast;
import com.android.volley.RequestQueue;
import com.android.volley.Response;
import com.android.volley.VolleyError;
import com.android.volley.toolbox.StringRequest;
import com.android.volley.toolbox.Volley;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
public class Average extends AppCompatActivity {
private TextView textViewResult;
private ProgressDialog loading;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_average);
textViewResult = (TextView) findViewById(R.id.textViewResult);
loading = ProgressDialog.show(this,"Please wait...","Fetching...",false,false);
String url = Config.DATA_URL.toString().trim();
StringRequest stringRequest = new StringRequest(url, new Response.Listener<String>() {
#Override
public void onResponse(String response) {
loading.dismiss();
showJSON(response);
}
},
new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
Toast.makeText(Average.this,error.getMessage().toString(),Toast.LENGTH_LONG).show();
}
});
RequestQueue requestQueue = Volley.newRequestQueue(this);
requestQueue.add(stringRequest);
}
private void showJSON(String response){
String name="";
try {
JSONObject jsonObject = new JSONObject(response);
JSONArray result = jsonObject.getJSONArray(Config.JSON_ARRAY);
JSONObject collegeData = result.getJSONObject(0);
name = collegeData.getString(Config.KEY_NAME);
} catch (JSONException e) {
e.printStackTrace();
}
textViewResult.setText("Name:\t"+name);
}
}
This is the Config.java:
public class Config {
public static final String DATA_URL = "https://lbstudios.000webhostapp.com/Average.php";
public static final String KEY_NAME = "value";
public static final String JSON_ARRAY = "result";
}
And this is Average.php:
<?php
$connect = mysqli_connect("********", "********", "********", "*******");
$response = mysqli_query($connect, 'SELECT AVG(value) AS average FROM rate1');
$result = array();
if ($response) {
/* fetch associative array */
while ($row = mysqli_fetch_assoc($response)) {
$result[] = $row;
}
/* free result set */
mysqli_free_result($result);
}
echo json_encode($result);
?>

I think that the a little problem comes up here;
JSONObject jsonObject = new JSONObject(response);
And
JSONArray result = jsonObject.getJSONArray(Config.JSON_ARRAY);
Let's suppose that the connection is established successfully with the server and $result array is returned as response.
In this particular case, the json array returned by the json_encode function is not wrapped with the name result. Instead they are just wrapped JSON objects connected together.
The possible solution I can come up with is to delete the above lines I mentioned and replace them with;
try {
JSONArray result = new JSONArray(response);
for(int i=0; i<result.length(); i++){
JSONObject obj = result.getJSONObject(i);
// Proceed with your logic with each object accordingly.
}
} catch (JSONException e) { e.printStackTrace();
}