How can I interface an Android app with SQL Server? - android

This is my problem:
I have to make an Android app that recover some data from an existing database situated on a Microsoft SQL Server installation on Windows Server 2003. I don't know so much about server-side programming languages, so I'm searching on the Internet, and I've found that I have to use a Web Service between my app and the ASP Classic page that connect to the database.
I also found that I have to use SOAP to send data to the server with my app, using the ksoap2 library on Android, and I found how to configure it on the client side. But I can't find how to configure the WebService and which format is better for interfacing my app and the ASP Classic page.


It's very easy, actually. All what you need is to create a webservice which will display the results in JSON format. Then you need to run an HTTP request from your Android app in order the get a JSON array containing JSON objects and then you will have your data from your database.
For example: the webservice will have a function written in ASP with a SELECT statement. Before your return the result, you need to encode it in JSON. Check out JSON Encode (MSDN).
The Android app will connect to the web service link and simply retrieve the JSON encoded data. I'll put you in the right way. You just use a snippet like this one to get data from the web service:
AsyncHttpClient client = new AsyncHttpClient();
client.get("http://yourwebservice.aspx", new AsyncHttpResponseHandler() {
#Override
public void onSuccess(String response) {
JSONArray jarr = new JSONArray(response);
for(int i = 0; i < jarr.length(); ++i) {
JSONObject jobj = jarr.getJSONObject(i);
// Do your things...
}
}
});


Create a RESTful web service in Web API or WCF. Web API will communicate with the database and your Android application with communicate with the web service.

Related

How to send json to http url connection android

I have HTTP path that need to send JSON
{
"domain": "mas.org.il",
"params": {
"type":"hug"
}
}
to get another JSON with all items to insert into my Android app
How do I send this JSON to http URL and get JSON to parse it into my app.

please read this useful document to know how can you implementing this feature
https://www.itsalif.info/content/android-volley-tutorial-http-get-post-put

Just to give a vary basic idea,add the json in apache NameValue pair or use apache Entitys with HttpPost .. or you can follow this.
How To Send json Object to the server from my android app

JSON server on Android

I'm new in Android development. I have a lot of file .JSON that I want to take by REST requests in my app. Is there a JSON local server for Android where I can save these file and do some REST requests?
Thanks

Go through with this url :-
https://github.com/typicode/json-server.

I stumbled to and used SyncAdapter and json-server to firebase and I treated android like a web-app
I noticed that the guide used uri and json parsing so I imported my fake rest db.json to firebase and used the link on https://console.firebase.google.com/project/new-firebase-app/database/data
...
final String rest = "https://new-firebase-app.firebaseio.com/people.json";
// Parse the pretend json news feed
String jsonFeed = download(rest);
JSONArray jsonPeople = new JSONArray(jsonFeed);
...
This might help.

make android provide any request to symfony

My project is in symfony where I need to get some data from android. So I implemented json encoding on both parts but my web application does not receive the data from android. I found the android is being unable to send data to symfony..
The code for android where the web link is written is as follows:
JSONObject json = jsonParser.getJSONFromUrl("http://external.apostle.digibiz.com/web/app_dev.php/api/test", params);
What is the error ??

Sending data to server from android application

I am developing an android app which collects the configuration of that particular phone and displays it on the phone.
I want that data , i.e , configuration values of a phone, to send to my server. Can anyone help me with the code.
I am getting the codes for sending data from server to the application but not from app to the server.

You have to use websevices, either SOAP or REST. For SOAP you can use KSOAP2 KSOAP2 library or for REST use this link.

Try using Spring for Android together with Android Annotations. e.g
#Rest(rootUrl = "http://company.com/ajax/services", converters = { MappingJacksonHttpMessageConverter.class })
public interface MyRestClient {
#Get("/events")
EventList getEvents();
}

Send and retrieve Ruby on Rails query?

I don't know anything about Ruby, but I think what I'm trying to do is pretty simple. I have an app that needs to send a url query like this to a heroku database: http://dartmouth.heroku.com/dnd/search.json?query=sebastian, then receive the data that comes back and organize it for the user. How do I send and recieve a query like this?
EDIT: I downloaded Spring and added the rest template jar to my projects build path. I tried using this code:
String url = "http://dartmouth.heroku.com/dnd/" + dataBase + "json?query=" + searchContent;
RestTemplate rstTemplate = new RestTemplate();
PersonList pList = rstTemplate.getForObject(url, PersonList.class);
but "RestTemplate" is not recognized. Did I miss an installation step?

You need to start by making an HTTP request for the data and then parsing the results. I would suggest trying out the Spring Android library to accomplish this: http://www.springsource.org/spring-android

Check out the explanation here: http://mike.bailey.net.au/2011/02/json-with-ruby-and-rails/
You can use a plugin called HttpParty for sending the request. Ruby on rails will interpret the json response by using the json library. The example on the above mentioned page might make things clearer.

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