Android :: Client Connecting To RestFul Webservice
Nov 10, 2010
I have been fed up of looking for a simple example of rest webservice connecting to Android Application. I know so many people have asked this question before, but there are so many different answers as a theory.
I know I must use restful web-service, rather than SOAP for mobile applications.
I need to create a webservice which is producing JSON, then in Android I can parse the JSON, but the problem is that as I am new to android I am looking for a simple example with both Server and client.
A server : JAVA with Database connection and Restful WebService that produce JSON
Android Client : which parse the JSON result from the webservice
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Aug 30, 2009
Trying to write a client in Android for JAX-RPC Webservices developed in JAVA.
Is this possible and please suggest any examples for this.
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Dec 2, 2009
I need to call a webservice from Android,the webservcie was created by Axis.I make a simple client to invoke the webservice on computer,get right response.But when I move the project to Android.there is one error:java.rmi; I dont's know where use this library.
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Nov 16, 2010
I have searched SO for anser to my question which is "invocking a remote webservice from a j2me application". All the tutorials refer to implementing it as a MIDLET. But I am not using a midlet. Can anyone please tell me if it is possible to invoke a webservice in plain j2me application, which is as basic as a hello world?
I am coding for android. My code starts with somethig like
CODE:..........
I want to know if a webservice can be invoked from this kind of program?
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Sep 12, 2010
Iam trying to connect my App to a WCF service that I created in asp.net.
The service runs on my localmachine: http://localhost:8080/Service.svc/
But for some reasons my Android can not connect to this http-adress.
This is the error: 09-12 14:50:44.540: WARN/System.err(593): org.apache.http.conn.HttpHostConnectException: Connection to http://127.0.0.1:8080 refused
This is the method in wcf, Iam trying to return a collection with some values.
CODE:.....................
And this is how the connection in the android looks like:
CODE:..........................
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Feb 24, 2010
I am trying to connect to a standalone desktop tcp server(java) from tcp client application in android device. But I am not able to connect to that.I tried to write a desktop tcp client and tried to connect to server(remote server). It is working fine.But When I am trying to connecting from android, I am getting a IOException while creating Socket instance.
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Oct 30, 2010
I am trying to comsume a self-hosted WCF service which simply returns a String in JSON format. It takes a very long time around 2-3 minutes to get the response on Android Device, where as on any other computer it works fine. Could anyone help me on this?
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Sep 27, 2010
What is the best way to deal with web services in Android? I have been looking at KSoap2 library and RESTful web services.
I got one working with KSoap2, but only when the web service is on a remote server, not on localhost. I have tried to redirect the ports for incoming and outgoing as it says on the android dev site, i have used the ip of the network i am on, my own ip and the localhost-ip (it says on the site that one cannot use localhost cause that is the emulators own loop-back network. None works.
With RESTful webservices, i have only tried a tutorial where a google app engine is used as server if i understood it right. Is it easy to connect a RESTful web service to a database. I need to have a database connection in my applikation, which one is normally used with REST?
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Jul 15, 2010
I am writing an Android app that should exchange data to a server over Bluetooth, with the server side on a PC running Ubuntu, using the bluez library, in C (or C++).
My Android app fails (IOException) when I try to connect to my server socket on the PC.
Here is essentially what I in the java code (in Android, full eclipse project here: http://dl.dropbox.com/u/2968234/ThinBTClient.zip)
CODE:...........
This throws IOException after a timeout of 10seconds or so.
On the server side (in Ubuntu 8.10), I basically set up a Bluetooth server socket, along the lines described in the example bluez/sdp-register.c
Down below is my C++ program. To compile it do
g++ -I/usr/include/glib-2.0/ -I/usr/lib/glib-2.0/include -o bt_server bt_server.cpp -lbluetooth
I can do the reverse succesfully, i.e. create a server socket in Android and connect from Linux, however this is not what I want to do!
I think either the problem has to do with my config of Ubuntu.
CODE:................
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Jun 14, 2009
I'm trying to call a RESTful web service from an Android application using the following method:
CODE:................
I can browse to address and see the xml results using the Android Emulator browser and from my machine. I have given my app the INTERNET permission.
I'm developing with eclipse.
I've seen it mentioned that I might need to configure a proxy but since the web service i'm calling is on port 80 this shouldn't matter should it? I can call the method with the browser.
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Nov 16, 2009
Question about Gmail on the Eris Droid.
Has anyone noticed a difference in settings, functionality, or battery life by using the integrated Gmail client as compared to using the Other e-mail which uses an IMAP client??
You set this up at initial startup.
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Jan 11, 2010
Best way of calling an asp.net web service from my android app. I am planning on using ksoap2 ? Is this a good route to go, or is that the only way to go? Do I have other options? What is the most efficient way if there are other options?
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Jun 5, 2010
I have a case in which i have created a web service in java. I have .wsdl file of this web service.
Now i want to send request and get response i.e. communicate with this web service using the .wsdl file. I tried searching a lot but did not find any satisfactory post or code sample to do that. Whatever i came across is of .net i.e. .asmx file.
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Oct 11, 2010
I have to call httpClient Within broadCastReciver ,but I got the following error
CODE:................
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Jun 7, 2010
We have a SOAP webservice that is used for an iPhone application, but it is possible that we need an Android specific version or a proxy of the service, so we have the option to go with either SOAP or JSON. I have a few concerns about both methods:
SOAP solution:
Is it possible to generate java source code from a WSDL file, if so, will it include some kind of proxy
class to invoke the webservice and will it work in the Android environment at all? Google has not provided any SOAP library in Android, so i need to use 3rd party, What about the performance/overhead with parsing and transmitting SOAP xml over the wire versus the JSON solution?
JSON solution:
There is a few classes in the Android sdk that will let me parse JSON, but does it support generic
parsing, like if I want the result to be parsed as a complex type? Or would I need to implement that
myself? I have read about 2 libraries before here on Stackoverflow, GSON an Jackson. What is the difference performance and usability (from a developers perspective) wise? Do you have any experince with either of those libraries?
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Aug 30, 2010
Playing around with the UI and SQLLite for a while and it looks pretty good to me . We have a requirement that for the App that all the questions would be coming from the server through REST / Web service which would be displayed on the App..
say for e.g if there are 4 questions
1) Enter your Name -- Text Box
2) Did you sleep well last night -- YES / NO
3) How many hours did you sleep - Text Box
4) How did you hear about us -- Drop down
So the requirement is that the Questions would be displayed on the App after doing a SYNC with the server during the SYNC with the server the Questions would be downloaded from the SERVER through REST / Web service..if the phone is not connected then pull the questions from the Database...
These questions are simple questions and they change quite often and we have a similar app which is there for iphone which does this ....
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Sep 30, 2010
can anybody give example of rest webservice in android
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Oct 15, 2010
I'm calling soap webservice in android app. its working fine and getting the response in SOAP object. I don't know what to do after that. I'm searching for tutorial but I didnt find any. I'm really very fed up. I need to parse the reponse.
CODE:..............
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Nov 23, 2010
I have created json parser to parse the data from this http://ajax.googleapis.com/ajax/services/search/local?v=1.0&sll=48.85...
I want to parse this data and wanna show in list view in android.
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Feb 13, 2010
I have not found any convinient way to create something like a jaxws wrapperclass for an existing Soap Webservice - like in full Java. Jaxws is unfortunately not avaliable in the sdk. Is there any was to do this without using any external libs? Are there any external libs at all yet?
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Jun 27, 2009
I have a problem while calling the webservice,i have a .NET web service in the server and i am using KSOAP2(ksoap2-j2se-full-2.1.2) in android.While running the program i got an runtime Exception
like "org.ksoap2.serialization.SoapPrimitive".
I dont know what to do.Here is my code.
CODE:................
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Sep 16, 2010
"How to call a PHP Webservice from Android using KSOAP2?"
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Oct 19, 2010
Is it possible to access a webservice through an Android app? So basically a user would be purchasing access to the site by paying for the app? Then deploy rich content to the user through the browser? If so, is it then possible to authenticate who has access to the site from the webserver without the need for signin or signup?
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May 25, 2009
I want to make a webservice to read datas from website.And the first step is to get an String returns by the site.
Here is my code,and i don't know why i can't get the String str in which XML contains.
CODE:............
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Jul 30, 2009
How to handle a complex type object from webservice. Presently I am able to handle simple String messages. But if I am extracting some array of objects or String, then how to handle this.
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Jun 28, 2010
Could anybody help me with creating the request to a web service using the ksoap2 framework. For example, I need to make the following request:
CODE:............
What the right approach for the name space's description and class mapping?
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Jun 1, 2010
I am calling a web service which has the following request format.
CODE:............
Now when I call the web service I get the following error SoapFault - faultcode: 'a:DeserializationFailed' faultstring: 'The formatter threw an exception while trying to deserialize the message: There was an error while trying to deserialize parameter http://test.com/2009/08:data.
The InnerException message was 'Error in line 1 position 463. Element 'http://test.com/2009/08/ DataContracts:InFields' contains data of the 'http://test.com/2009/08/ DataContracts:anyType' data contract. The deserializer has no knowledge of any type that maps to this contract.
Add the type corresponding to 'anyType' to the list of known types - for example, by using the KnownTypeAttribute attributre or by adding it to the list of known types passed to DataContractSerializer.'. Please see InnerException for more details.' faultactor: 'null' detail: org.kxml2.kdom.Node@43bcb040
The Request sent is has i:type="n0:anytype" in each tag which is creating an error in server side. How do T remove the attribute from the XML tag of the request XML for example <n0:ExServiceDataField i:type="n0:anyType"> should be as <n0:ExServiceDataField>
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Jan 21, 2010
I'm using eclipse to develop over android, i'm trying to connect to a .net webservice...when i'm calling a webmethod with no parameters it works fine... but when i come to pass a parameter to the webmethod things turn upside down... the parameter is passed as null (while debugging the webservice i discovered that) and i get a null from the webmethod in the client side code... i've been searching for a solution for a day now and all that i can interpreter is that people keep talking about encoding styles and such stuff.... i've tried it all but in vain. i'm using ksoap2 version 2.3 with the following code:
CODE:......................
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Nov 10, 2010
How should I call this Soap Webservice from an android . code...
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Nov 14, 2010
I have a android APP that needs a remote Database, to do INSERT's and SELECT's.
I will use a webservice to comunicate with the remote database, the webservice will be installed in the server side, with the remote database, and webservice will do the SELECTS and the INSERTS and will return me XML data. But i dont know anything about webservices, then a friend will do it.
But my friend need's to known if there is any limitations making webservices for Android. I search on google for days but all i am finding is very complex and i can't find the answer to these three questions:
Webservice needs to be created with a special way? Webservice remote functions can have parameters? (i need to give to the webservice parameters to do the select's or the inserts of data) Webservice can return results in XML normally or needs a special way to do it?
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