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How to get data from key of a JSON [duplicate]

This question already has answers here:
How to iterate over a JSONObject?
(15 answers)
Closed 5 years ago.
I am creating an app in which i need to parse a list of contacts which is in JSONObject format, with key before each object, i don't know how to parse this format.
{
"1": {
"mobileContact": "98562325",
"systemContact": "9198562325"
},
"3": {
"mobileContact": "987563656",
"systemContact": "91987563656"
},
"4": {
"mobileContact": "965632525",
"systemContact": "91965632525"
},
"6": {
"mobileContact": "965436222",
"systemContact": "91965436222"
}
}

Use the keys() iterator to iterate over all the properties, and call get() for each.
Iterator<String> iter = json.keys();
while (iter.hasNext()) {
String key = iter.next();
try {
Object value = json.get(key);
} catch (JSONException e) {
// Something went wrong!
}
}

try{
JSONObject json = new JSONObject(jsonRespondeString);
Iterator<String> iterator = json.keys();
while (iterator.hasNext()){
String key = iterator.next();
JSONObject object = json.getJSONObject(key);
String value1 = object.getString("key1");
String value2 = object.getString("key2");
}
}
catch (JSONException e){
e.printStackTrace();
}
please try this it helps

You can use GSON library to parse it.
String data = "{\n" +
" \"1\": {\n" +
" \"mobileContact\": \"98562325\",\n" +
" \"systemContact\": \"9198562325\"\n" +
" },\n" +
" \"3\": {\n" +
" \"mobileContact\": \"987563656\",\n" +
" \"systemContact\": \"91987563656\"\n" +
" },\n" +
" \"4\": {\n" +
" \"mobileContact\": \"965632525\",\n" +
" \"systemContact\": \"91965632525\"\n" +
" },\n" +
" \"6\": {\n" +
" \"mobileContact\": \"965436222\",\n" +
" \"systemContact\": \"91965436222\"\n" +
" }\n" +
"}";
Map<String, Item> itemMap = new HashMap<>();
itemMap = new Gson().fromJson(data, itemMap.getClass());
Log.i("data", itemMap);
Item Class
private class Item {
String mobileContact;
String systemContact;
// getters and setters
public String getMobileContact() {
return mobileContact;
}
public void setMobileContact(String mobileContact) {
this.mobileContact = mobileContact;
}
public String getSystemContact() {
return systemContact;
}
public void setSystemContact(String systemContact) {
this.systemContact = systemContact;
}
}
You need to add the following to the build.gradle file,
compile 'com.google.code.gson:gson:2.8.0'

how should i make JSONObject and JSONArray from json url or json

My JSON:
{
"response_code": 200,
"error": false,
"train_name": "KCG YPR EXP",
"train_num": "17603",
"pnr": "1234567890",
"failure_rate": 19.346153846153847,
"doj": "20-8-2015",
"chart_prepared": "Y",
"class": "SL",
"total_passengers": 2,
"train_start_date": {
"month": 8,
"year": 2015,
"day": 20
},
"from_station": {
"code": "KCG",
"name": "KACHEGUDA"
},
"boarding_point": {
"code": "KCG",
"name": "KACHEGUDA"
},
"to_station": {
"code": "YPR",
"name": "YESVANTPUR JN"
},
"reservation_upto": {
"code": "YPR",
"name": "YESVANTPUR JN"
},
"passengers": [
{
"no": 1,
"booking_status": "S7,58,GN",
"current_status": "S7,58",
"coach_position": 9
},
{
"no": 2,
"booking_status": "S7,59,GN",
"current_status": "S7,59",
"coach_position": 9
}
]
}
What I did so far:
if(jsonStr!=null)
{
try
{
JSONObject object=new JSONObject(jsonStr);
JSONArray jsonArray=object.getJSONArray("passengers");
for (int i=0;i<=jsonArray.length();i++)
{
JSONObject o=jsonArray.getJSONObject(i);
int no= Integer.parseInt(o.optString("no").toString());
String booking_status=o.getString("Booking Status");
String current_status=o.getString("Current Status");
String coach_position=o.getString("Coach Position");
JSONObject data=o.getJSONObject("details");
String train_name = data.getString("Train Name");
int train_num = Integer.parseInt(data.optString("train number").toString());
int pnr = Integer.parseInt(data.optString("pnr").toString());
String chart_prepared = data.getString("Chart Prepared");
int total_passengers=Integer.parseInt(data.optString("total passengers").toString());
JSONObject date=data.getJSONObject("tarin_start_date");
int month=Integer.parseInt(data.optString("month").toString());
int year=Integer.parseInt(data.optString("year").toString());
int day=Integer.parseInt(data.optString("day").toString());
JSONObject co=date.getJSONObject("from_station");
String code=co.getString("code");
String name=co.getString("name");
JSONObject co1=co.getJSONObject("boarding_point");
String code1=co1.getString("code");
String name1=co1.getString("name");
JSONObject co2=co1.getJSONObject("to_station");
String code2=co2.getString("code");
String name2=co2.getString("name");
JSONObject co3=co2.getJSONObject("from_station");
String code3=co3.getString("code");
String name3=co3.getString("name");
HashMap<String,String> dtail=new HashMap<>();
dtail.put("no", String.valueOf(no));
dtail.put("Booking Staus",booking_status);
dtail.put("Current Staus",current_status);
dtail.put("Coach Positon",coach_position);
dtail.put("Train Name",train_name);
dtail.put("Train Number", String.valueOf(train_num));
dtail.put("pnr", String.valueOf(pnr));
dtail.put("chart prepared",chart_prepared);
dtail.put("total passengers", String.valueOf(total_passengers));
dtail.put("month", String.valueOf(month));
dtail.put("year", String.valueOf(year));
dtail.put("day", String.valueOf(day));
dtail.put("code",code);
dtail.put("name",name);
dtail.put("code",code1);
dtail.put("name",name1);
dtail.put("code",code2);
dtail.put("name",name2);
dtail.put("code",code3);
dtail.put("name",name3);
dataList.add(dtail);
}
}
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;
}

Here is your solution.
Hope this will help you. Whenever you work with JSON check all key name. It should always same as response key name
if (jsonStr != null) {
try {
JSONObject object = new JSONObject(jsonStr);
HashMap<String, String> dtail = new HashMap<>();
JSONArray jsonArray = object.getJSONArray("passengers");
for (int i = 0; i < jsonArray.length(); i++) {
JSONObject o = jsonArray.getJSONObject(i);
int no = Integer.parseInt(o.optString("no").toString());
String booking_status = o.getString("booking_status");
String current_status = o.getString("current_status");
String coach_position = o.getString("coach_position");
dtail.put("no", String.valueOf(no));
dtail.put("Booking Staus", booking_status);
dtail.put("Current Staus", current_status);
dtail.put("Coach Positon", coach_position);
}
String train_name = object.getString("train_name");
int train_num = Integer.parseInt(object.optString("train_num").toString());
int pnr = Integer.parseInt(object.optString("pnr").toString());
String chart_prepared = object.getString("chart_prepared");
int total_passengers = Integer.parseInt(object.optString("total_passengers").toString());
JSONObject date = object.getJSONObject("train_start_date");
int month = Integer.parseInt(date.optString("month").toString());
int year = Integer.parseInt(date.optString("year").toString());
int day = Integer.parseInt(date.optString("day").toString());
JSONObject co = object.getJSONObject("from_station");
String code = co.getString("code");
String name = co.getString("name");
JSONObject co1 = object.getJSONObject("boarding_point");
String code1 = co1.getString("code");
String name1 = co1.getString("name");
JSONObject co2 = object.getJSONObject("to_station");
String code2 = co2.getString("code");
String name2 = co2.getString("name");
JSONObject co3 = object.getJSONObject("reservation_upto");
String code3 = co3.getString("code");
String name3 = co3.getString("name");
dtail.put("Train Name", train_name);
dtail.put("Train Number", String.valueOf(train_num));
dtail.put("pnr", String.valueOf(pnr));
dtail.put("chart prepared", chart_prepared);
dtail.put("total passengers", String.valueOf(total_passengers));
dtail.put("month", String.valueOf(month));
dtail.put("year", String.valueOf(year));
dtail.put("day", String.valueOf(day));
dtail.put("code", code);
dtail.put("name", name);
dtail.put("code", code1);
dtail.put("name", name1);
dtail.put("code", code2);
dtail.put("name", name2);
dtail.put("code", code3);
dtail.put("name", name3);
dataList.add(dtail);
} catch (final JSONException e) {
Log.e("Json", "Json parsing error: " + e.getMessage());
runOnUiThread(new Runnable() {
#Override
public void run() {
Toast.makeText(getApplicationContext(),
"Json parsing error: " + e.getMessage(),
Toast.LENGTH_LONG).show();
}
});
}

Hope this will help :-
#Override
protected void onCreate(#Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.dummy);
String str = "{\n" +
" \"response_code\": 200,\n" +
" \"error\": false,\n" +
" \"train_name\": \"KCG YPR EXP\",\n" +
" \"train_num\": \"17603\",\n" +
" \"pnr\": \"1234567890\",\n" +
" \"failure_rate\": 19.346153846153847,\n" +
" \"doj\": \"20-8-2015\",\n" +
" \"chart_prepared\": \"Y\",\n" +
" \"class\": \"SL\",\n" +
" \"total_passengers\": 2,\n" +
" \"train_start_date\": {\n" +
" \"month\": 8,\n" +
" \"year\": 2015,\n" +
" \"day\": 20\n" +
" },\n" +
" \"from_station\": {\n" +
" \"code\": \"KCG\",\n" +
" \"name\": \"KACHEGUDA\"\n" +
" },\n" +
" \"boarding_point\": {\n" +
" \"code\": \"KCG\",\n" +
" \"name\": \"KACHEGUDA\"\n" +
" },\n" +
" \"to_station\": {\n" +
" \"code\": \"YPR\",\n" +
" \"name\": \"YESVANTPUR JN\"\n" +
" },\n" +
" \"reservation_upto\": {\n" +
" \"code\": \"YPR\",\n" +
" \"name\": \"YESVANTPUR JN\"\n" +
" },\n" +
" \"passengers\": [\n" +
" {\n" +
" \"no\": 1,\n" +
" \"booking_status\": \"S7,58,GN\",\n" +
" \"current_status\": \"S7,58\",\n" +
" \"coach_position\": 9\n" +
" },\n" +
" {\n" +
" \"no\": 2,\n" +
" \"booking_status\": \"S7,59,GN\",\n" +
" \"current_status\": \"S7,59\",\n" +
" \"coach_position\": 9\n" +
" }\n" +
" ]\n" +
"}";
parseJson(str);
}
private void parseJson(String jsonStr) {
HashMap<String, String> dtail = new HashMap<>();
if (jsonStr != null) {
try {
JSONObject object = new JSONObject(jsonStr);
int responseCode = object.getInt("response_code");
boolean error = object.getBoolean("error");
String train_name = object.getString("train_name");
int train_num = object.getInt("train_num");
int pnr = object.getInt("pnr");
double failurerate = object.getDouble("failure_rate");
String dateofJoin = object.getString("doj");
String chart = object.getString("chart_prepared");
String Class = object.getString("class");
int total_passengers = object.getInt("total_passengers");
JSONObject date = object.getJSONObject("train_start_date");
int month = date.getInt("month");
int year = date.getInt("year");
int day = date.getInt("day");
JSONObject co = object.getJSONObject("from_station");
String code = co.getString("code");
String name = co.getString("name");
JSONObject co1 = object.getJSONObject("boarding_point");
String code1 = co1.getString("code");
String name1 = co1.getString("name");
JSONObject co2 = object.getJSONObject("to_station");
String code2 = co2.getString("code");
String name2 = co2.getString("name");
JSONObject co3 = object.getJSONObject("from_station");
String code3 = co3.getString("code");
String name3 = co3.getString("name");
JSONArray jsonArray = object.getJSONArray("passengers");
for (int i = 0; i < jsonArray.length(); i++) {
JSONObject jsonObject = jsonArray.getJSONObject(i);
int no = jsonObject.getInt("no");
String booking_status = jsonObject.getString("booking_status");
String current_status = jsonObject.getString("current_status");
int coach_position = jsonObject.getInt("coach_position");
dtail.put("no", String.valueOf(no));
dtail.put("booking_status", booking_status);
dtail.put("current_status", current_status);
dtail.put("coach_position", String.valueOf(coach_position));
}
dtail.put("responseCode", String.valueOf(responseCode));
dtail.put("error", "" + error);
dtail.put("Train Name", train_name);
dtail.put("dateofJoin", dateofJoin);
dtail.put("chart", chart);
dtail.put("Class", Class);
dtail.put("Train Number", String.valueOf(train_num));
dtail.put("pnr", String.valueOf(pnr));
dtail.put("FAILURE_RATE", String.valueOf(failurerate));
dtail.put("total passengers", String.valueOf(total_passengers));
dtail.put("month", String.valueOf(month));
dtail.put("year", String.valueOf(year));
dtail.put("day", String.valueOf(day));
dtail.put("code", code);
dtail.put("name", name);
dtail.put("code", code1);
dtail.put("name", name1);
dtail.put("code", code2);
dtail.put("name", name2);
dtail.put("code", code3);
dtail.put("name", name3);
Log.e("Result------", "" + dtail);
} 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();
}
});
}
}
}

JSON parsing to List view with multiple objects Android [closed]

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Edit the question to include desired behavior, a specific problem or error, and the shortest code necessary to reproduce the problem. This will help others answer the question.
Closed 6 years ago.
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I have Json through which i have to retrieve objects but unable to retrieve.
I have used multiple objects also to retrieve but no success.
JSON:
{
"status": 1,
"data": [{
"restaurent_id": "1",
"user_id": "6",
"zone_id": "1",
"restaurentAddress": {
"restaurent_address_id": "1"
},
"restaurentInfo": {
"restaurent_info_id": "1",
"restaurent_bussiness_owner_name": "Vijay"
},
"restaurentSetting": {
"restaurent_setting_id": "1",
"minimum_purcase": "200",
"payment_method_id": "1",
"title": "Best Hotel"
},
"zone": {
"zone_id": "1",
"by_zipcode": "1"
}
}]
}
and i want to fetch restaurentAddress and restaurentInfo
MY mainActivity.java file
package com.example.premi.jsonlist;
import android.app.Activity;
import android.os.Bundle;
import android.widget.TextView;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
public class MainActivity extends Activity {
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
TextView output = (TextView) findViewById(R.id.textView1);
String strJson="{\n" +
"\t\"status\": 1,\n" +
"\t\"data\": [{\n" +
"\t\t\"restaurent_id\": \"1\",\n" +
"\t\t\"user_id\": \"6\",\n" +
"\t\t\"zone_id\": \"1\",\n" +
"\t\t\"restaurentAddress\": {\n" +
"\t\t\t\"restaurent_address_id\": \"1\"\n" +
"\t\t},\n" +
"\t\t\"restaurentInfo\": {\n" +
"\t\t\t\"restaurent_info_id\": \"1\",\n" +
"\t\t\t\"restaurent_bussiness_owner_name\": \"Vijay\"\n" +
"\t\t},\n" +
"\t\t\"restaurentSetting\": {\n" +
"\t\t\t\"restaurent_setting_id\": \"1\",\n" +
"\t\t\t\"minimum_purcase\": \"200\",\n" +
"\t\t\t\"payment_method_id\": \"1\",\n" +
"\t\t\t\"title\": \"Best Hotel\"\n" +
"\t\t},\n" +
"\t\t\"zone\": {\n" +
"\t\t\t\"zone_id\": \"1\",\n" +
"\t\t\t\"by_zipcode\": \"1\"\n" +
"\t\t}\n" +
"\n" +
"\t}]\n" +
"}";
String dataoutput = "";
try {
JSONObject jsonRootObject = new JSONObject(strJson);
//Get the instance of JSONArray that contains JSONObjects
JSONObject status = jsonRootObject.optJSONObject("status");
JSONArray Dataarray =status.getJSONArray("data");
//Iterate the jsonArray and print the info of JSONObjects
for(int i=0; i < Dataarray.length(); i++){
JSONObject jsonObject = Dataarray.getJSONObject(i);
JSONObject Data = jsonObject.getJSONObject("restaurentAddress");
for(int j = 0 ; j < Data.length(); j++){
JSONObject GetData =Data.getJSONObject(String.valueOf(j));
int id = Integer.parseInt(GetData.getString("restaurent_address_id"));
String postcode = GetData.getString("postcode");
String addresss = GetData.getString("restaurent_address");
dataoutput += " : \n id= "+ id +" \n postcode= "+ postcode +" \n address= "+ addresss +" \n ";
}}
output.setText(dataoutput);
} catch (JSONException e) {e.printStackTrace();}
}
}

Try this out:
try {
JSONObject object = (JSONObject) new JSONTokener(YOUR_JSON_STRING).nextValue();
String restaurentAddressId = object.getJSONArray("data").getJSONObject(0).getJSONObject("restaurentAddress").getString("restaurent_address_id");
String restaurentInfoId = object.getJSONArray("data").getJSONObject(1).getJSONObject("restaurentInfo").getString("restaurent_info_id");
String restaurentBizOwnerName = object.getJSONArray("data").getJSONObject(1).getJSONObject("restaurentInfo").getString("restaurent_business_owner_name");
}
catch (JSONException e) {
}

Its Done I tried this
try {
JSONObject jsonRootObject = new JSONObject(strJson);
//Get the instance of JSONArray that contains JSONObjects
JSONArray mainnode =jsonRootObject.getJSONArray("data");
//Iterate the jsonArray and print the info of JSONObjects
for(int i=0; i < mainnode.length(); i++){
JSONObject jsonObject = mainnode.getJSONObject(i);
JSONObject Data = jsonObject.getJSONObject("restaurentInfo");
int id = Integer.parseInt(Data.getString("restaurent_info_id"));
String postcode = Data.getString("restaurent_phone_number");
String addresss = Data.getString("restaurent_bussiness_owner_name");
dataoutput += " : \n restaurent_id= "+ id +" \n restaurent_info_id= "+ postcode +" \n restaurent_address_id= "+ addresss +" \n ";
}
output.setText(dataoutput);
} catch (JSONException e) {e.printStackTrace();}
}
I just removed Status Object
and another for loop Thanks For the Help Got little Bit Help from You :)

CookieManager not sending cookie after first and second request

Currently working on an Android app with CookieManager..
I am trying to do PUT requests using a for loop but for some odd reason, only the first two requests succeed. I asked the server guy for help and he indicated that the other PUT requests fail because they do not have a cookie attached.
This is the for loop that I'm using.
for(int i = 0; i < userList.size(); i++) {
User user = userList.get(i);
String url = apiURL;
String address = user.getEmail() == null ? "nil":user.getEmail();
String jsonString = "{build:\"" + String.valueOf(BuildConfig.VERSION_CODE) + "\",device_id:\"" + ((MainActivity)activity).tmDevice + "\",platform:\"android\",\n" +
" type:\"User\",\n" +
" id:\"" + String.valueOf(user.getId()) + "\",\n" +
" first_name:\"" + user.getFirstName() + "\",\n" +
" last_name:\"" + user.getLastName() + "\",\n" +
" name:\"" + user.getName() + "\",\n" +
" image:{\n" +
" type:\"UserPhoto\",\n" +
" id:\"1a035500-012f-1cc2-9d22-96a73beda35e\"\n" +
" },\n" +
" emails:[\n" +
" {\n" +
" type:\"Email\",\n" +
" address:" + address + "\n" +
" }\n" +
" ],\n" +
" phone_numbers:[]\n" +
" }";
JSONObject js = null;
try {
js = new JSONObject(jsonString);
} catch (JSONException e) {
e.printStackTrace();
}
final JSONObject finalJs = js;
JsonObjectRequest jsObjRequest = new JsonObjectRequest(
Request.Method.PUT,url, finalJs,
new Response.Listener<JSONObject>() {
#Override
public void onResponse(JSONObject response) {
Log.i("putresponse", String.valueOf(response));
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
Log.i("puterror", String.valueOf(error));
}
});
VolleySingleton.getInstance((MainActivity) activity).addToRequestQueue(jsObjRequest);
}
This is the code for setting CookieManager.
manager = new CookieManager();
CookieHandler.setDefault(manager);
Even the GET requests right before the PUT requests work fine..
Any help?

After 3 days of seaching and reading about CookieManager
I finally find and make a perfect solution :
static CookieManager myCookies = new CookieManager(null, CookiePolicy.ACCEPT_ALL);;
final public static void saveCookies(HttpURLConnection connection , Context context) {
Map<String, List<String>> headerFields = connection.getHeaderFields();
List<String> cookiesHeader = null;
try {
cookiesHeader = headerFields.get("Set-Cookie");
} catch (Exception e) {
e.printStackTrace();
}
if (cookiesHeader != null && myCookies != null) {
for (String cookie : cookiesHeader) {
try {
cookie = cookie.replace("\"", "");
myCookies.getCookieStore().add(connection.getURL().toURI(), HttpCookie.parse(cookie).get(0));
String new_cookie = TextUtils.join(";", myCookies.getCookieStore().getCookies());
PreferenceManager.getDefaultSharedPreferences(context).edit().putString("cookie", new_cookie).commit();
} catch (Exception ex) {
ex.printStackTrace();
}
}
}
}
final public static void loadCookies(HttpURLConnection connection , Context context) {
if (myCookies != null && myCookies.getCookieStore().getCookies().size() > 0) {
connection.setRequestProperty("Cookie", TextUtils.join(";", myCookies.getCookieStore().getCookies()));
}
else {
String new_cookie = PreferenceManager.getDefaultSharedPreferences(context).getString("cookie" , "");
connection.setRequestProperty("Cookie", new_cookie );
}
}

How should I do this query in Sqlite?

I have a database with the columns: id, pdate, pvalue1, pvalue2. First I make a query with a cursor:
Cursor c = ourDatabase.query(DATABASE_TABLE, new String[] { "_id","pdate","pvalue1","pvalue2"},
"pdate >= ? AND pdate <= ?", new String[] { datefrom, dateto }, null, null, null);
This gives me some rows, for example if pdate = 20120318, then pvalue1 = 58, pvalue2=29. These are strings so I can give a value of "XX" to pvalue2. I would like to sum the pvalue1 between the given datefrom and dateto and group them by pdate where pvalue2 = XX. My problem is that I cannot put this condition into the query (with that its working, like "pvalue2 = XX"..), because I need the other datas too.
if (c.moveToFirst())
{
do{
if (c.getString(3).equals("XX")){
Log.i("XX", c.getString(1) + " " + c.getString(2)) + " " + c.getString(3));
}
else {
Log.i("NotXX", c.getString(1) + " " + c.getString(2)) + " " + c.getString(3));
}
while (c.moveToNext());
}
}
It is okay so far, so I can log the datas with this where pvalue2 = XX and NotXX and get something like this:
(pdate,pvalue1,pvalue2) 20120317,48,29;------;20120317,21,54;-------20120317,11,XX;-----20120318,79,71;-------20120318,21,XX;
What I would like to do?
First: Grouping the sums (pvalue1) by pdate and indicate it if pvalue2 is XX or notXX, so somethnig like this:
20120317,NotXX,69 (since 48+21=69) -------- 20120317,XX,11 -------- 20120318,NotXX,79 -------- 20120318,XX,21
After this I would like to substract the XX sum from the NotXX sum for every day. I would like to get:
20120317,58 (since 69-11) ------- 20120318,58 (since 79-21)
How sould I do this?
Thank you very much in advance!

My problem is that I cannot put this condition into the query
You are probably wrong. You can add something like (syntax may contain errors)
"select sum(select pdate from DATABASE_TABLE where pdata > x and pdate < y) as sum"
to the projection argument and you get that result as a column named sum. The only problem is that there is no support for ? in projection (at least I have not tried it but I guess it would not work)
If that's not what you want then there is very likely a different way. SQLite is very powerful.
Edit:
Would that be what you want? It's not done in SQL but it would print the sum you want for each day.
Cursor c = ourDatabase.query(DATABASE_TABLE, new String[] { "_id","pdate","pvalue1","pvalue2"},
"pdate >= ? AND pdate <= ?", new String[] { datefrom, dateto }, null, null, "pdate");
boolean first = true;
if (c != null) {
String currentDate = null;
int sum = 0;
while (c.moveToNext()) {
String date = c.getString(1);
int value1 = c.getInt(2);
String value2 = c.getString(3);
if (!date.equals(currentDate)) {
if (!first) {
Log.d("TAG", "The result for " + currentDate + " is: " + sum);
} else {
Log.d("TAG", "Date has changed, but we don't have data yet.");
}
first = false;
currentDate = date;
sum = 0;
}
if ("XX".equals(value2)) {
Log.d("TAG", "new line: " + date + ", " + value1 + ", " + value2 + " -");
sum -= value1;
} else {
Log.d("TAG", "new line: " + date + ", " + value1 + ", " + value2 + " +");
sum += value1;
}
}
if (!first) {
Log.d("TAG", "The last result: " + currentDate + " is: " + sum);
}
c.close();
}
Edit2: This might work when you want it done by the database.
Cursor c = ourDatabase.rawQuery(
"SELECT pdate, sum(sum2) AS sum1 FROM " +
"(" +
" SELECT pdate, pvalue1, pvalue2, -sum(pvalue1) AS sum2 " +
" FROM " + DATABASE_TABLE +
" WHERE pvalue2='XX' GROUP BY pdate" +
" UNION " +
" SELECT pdate, pvalue1, pvalue2, sum(pvalue1) AS sum2 " +
" FROM " + DATABASE_TABLE +
" WHERE pvalue2!='XX' GROUP BY pdate" +
") " +
" WHERE pdate>=? AND pdate<=? " +
" GROUP BY pdate",
new String[] { datefrom, dateto });
if (c != null) {
while (c.moveToNext()) {
String date = c.getString(0);
int value1 = c.getInt(1);
Log.d("TAG", "The result for " + date + " is: " + value1);
}
c.close();
}