Android :: Authenticate To REST Web Service From Droid App?
Sep 24, 2010
I need to pull data from a REST web service in my android app. The web service requires authentication.
I need to first call a login method, which will return me an authToken and JSESSIONID as part of the response header. I need to pass these items back with every request. I'm currently using: org.apache.http.impl.client.DefaultHttpClient.DefaultHttpClient() to call the login method. I can see the authToken and JSESSIONID are being returned in the response header.
Are there any existing tools or classes that might provide some sort of management functionality that I can easily integrate with my android app?
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Nov 18, 2010
I published the rest service.. but the android app is showing null pointer exception.. but if it access my local machine's service its working well.. the service hosted has anonymous access..
this is my android code...
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Aug 31, 2010
I have a WCF REST service built with C# and it returns an image as part of a CPU intensive operation. The client is running on Android (Java) By default, it will return a text JSON object that looks something like this:{"d",[9,0,77,12,11,...]}Those are they bytes of the image. Fine. However, all the solutions for decoding this JSON are intolerably slow. I've tried Gson, Jackson, and the built-in Android JSONObject class. I have no idea why they are so slow.As an alternative solution, I have my REST service return a GUID, and then that GUID can be used by the Android client to go to a regular URL that serves up the image as a regular binary stream, via an MVC controller. This works well, and it fast, and is pretty easy to handle on the Android side. However, it does feel like a bit of kludge and kind of a violation of the REST design principles.
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Jun 11, 2010
Retrieving data from the REST Server works well, but if I want to post an object it doesn't work:...
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Jul 29, 2010
i want to call REST Web Service from application.
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Oct 27, 2010
i am trying to send a json string from my android client to my .net Rest service...
HttpClient client = new DefaultHttpClient();
HttpPost post = new HttpPost("http://myURL");
JSONObject json = new JSONObject();
json.put("name", "i am sample");
StringEntity str = new StringEntity(json.toString());
str.setContentType("application/json; charset=utf-8");
str.setContentEncoding(new BasicHeader(HTTP.CONTENT_TYPE,"application/json; charset=utf-8"));
post.setEntity(str);
HttpResponse response = client.execute(post);
Response is bad request. am i sending the json object as string? is this code correct?
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Mar 7, 2010
I updated my daughters Eris to 2.1 worked fine for a few days, now she can't make any phone calls and gets a message that VZW is "unable to authenticate" her phone, she can receive incoming calls and all other features. I am not experiencing this on my Eris with 2.1.
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Aug 10, 2010
Is there any Opensource REST / RESTful Client / Library for Android ? Please share me the links.
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Feb 10, 2010
way I can Authenticate a Google Apps User in a Android Application? One approach I know of is to take could take their username and password in a android view, and use the clientLogin interface (http://code.google.com/apis/accounts/docs/AuthForInstalledApps.html). However I was wondering if there was a different approach, maybe pushing to a browser window where it would show the google login for that domain, but I would not know how to get the details back to the application, after the authentication is done.
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Sep 8, 2010
I'm building a Webapp that uses OpenId to authenticate users, like Stackoverlfow does. There will be a mobile App too, e.g. Android or iPhone. These Apps have to authenticate or login somehow, to access data and update stuff that belongs to the user. Since there is no username and password one could provide to authenticate the mobile device, I wonder how to achieve this.Two ways came into my mind:Generate some key on the server that must be entered on the device. This key will be send as auth-key when the mobile device sends or requests data and the user can be linked that way. When using this Option, the key should be transported somehow to the user, so he doesn't have to type it in. Maybe via email, SMS or by scanning a barcode. The mobile App uses the Browser or shows an integrated Web-Panel that opens a special page of the Webapp. On this page, the user has to login in, and could then allow the mobile App to read and write data. My question is: Are both ways possible and save? Which one would you prefer? What are the details to watch out for? Are there any other ways to do this? If I got it all right, it would not be possible to use OpenId on the Device, and link the mobile and the webapp that way, right?
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Aug 2, 2012
I am having an issue ever since Jellybean came out. I was running my Galaxy nexus happily all the way from 4.0.2 to 4.0.4 with no problems connecting to my workplace's 802.1x network using TTLS and PAP for phase 1 and 2 authentication, respectively.
As soon as I put a JB 4.1.1 ROM on it, it doesn't work. It still sees the network, and it correctly displays that it is secured with 802.1x. However, whenever I try to authenticate, after trying to connect a few times, it just reverts to being an inactive saved network or comes up saying "Authentication problem".
I would have chalked this up to having simply installed an early ROM, but then I went out and bought a Nexus 7, and lo and behold, it has the same issue! I have taken about 10 different posted versions of the wpa_supplicant file and put them in /system/bin with proper permissions, but no dice.
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Aug 16, 2010
I'm trying to use the Google Data API for an installed application on Android 2.1. I don't want the user to have to enter their credentials if he already has an account configured on the device. Thus, I'm using the AccountManager with Account type "com.google".
But where to go from there? There are no samples from Google on how to do Google authentication (authTokenType etc.). There's a project trying to do it (http://code.google.com/p/google-authenticator-for-android) in a general way but without any success, yet.
This is really keeping back applications like Google Reader clients which have to ask the user for their Google credentials (which hopefully nobody gives them).
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Sep 30, 2010
can anybody give example of rest webservice in android
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Dec 7, 2009
I develop facebook application in android. i want to log in to facebook via HTTPClient , teh user give me username and password and then i connect to facebook.com/login. i want to make like this code http://stackoverflow.com/questions/1409220/facebook-getting-incorrect-signature-104-when-getting-session-key/1795229#1795229. but in android, i tried to do that but when i get the session, a XML contain invalid parameter returned
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Sep 8, 2010
I am looking for a screen capture utility that DOES NOT require a rooted phone.HOW IDIOTIC, suppose I want to screen capture as a user, to help a developer do documentation? This is absurd that there's no apps for the rest of us honest users.there's something if I connect it to my PC. C'mon, I don't have to connect my home PC to some other computer to take screen snapshots. I want an app that works on the phone itself, and does not require root access.
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Jul 22, 2010
In my app, I have different activities with listviews. The datas come from a server with a REST method, and it's only done once, when I start the application.
The pattern that I'd like to set is to precharge all the listviews with the JSONs that I already have in local, and in parallel, launch a thread that get the new JSONs files with my REST methods, and then update the listviews.
For now, when I start the app, I parse my JSONs files, and build all the lists of objects. I access them later in a static way, from my lists adapters.
So I would like to know the best way to launch this REST thread, and update the listview. Should I use AsyncTask ? A service ? and then, when I update my local JSONs, I have to re-parse them, updates the lists of object, and call in my adapters NotifyDataChanged ?
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Jan 8, 2010
I want to add admob add in my application, I want to make application for every screensize, I am having a problem with is, I want to arrange a layout such that, ad comes on the top the rest of which should be webview. I can do it for normal screen sizes by hardcoding the screen size to desired px but it is not working on bigger screensizes, I want to add this in layout.xml.
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Sep 30, 2010
Please show me how to bind to a Service from another Service on Android.
If you have an image to show how to do.
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Jul 9, 2009
I'd like to be able to send a POST request from an Android app to App Engine and have it linked to the user's Google account.I read that you need to obtain an authentication token and send it with the POST request. Does Android provide a way to request this token?And how would GAE process it?I feel like this should be easy and I'm missing something obvious.
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Nov 10, 2010
Wondering what the differences between REST and JSON APIs are, how you interface with them, and how to go about parsing the results. My goal is to build a small application for my android phone to tell me when the next train will get to the subway station by my house, using the developer API provided by the transit agency.
I'm learning C++ in university, but hope to go about this in Java. I'm sorry if this is more of a discussion question rather than a black and white answer question, but I can't find any information elsewhere.
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Jun 8, 2010
I've watched many of the Google IO talks and one that I'm trying to reproduce is "Developing Android REST client applications"[1]. In this talk Virgil suggests you should not execute your RESTful queries inside a Thread/AsyncTask spawned from your Activity (which I had been doing), instead you should use a more complex architecture that uses a combination of a ContentProvider and a Service. From what I understood the reason for this design was so your data was more persistent between app restarts, and so your queries don't disappear if your Activity starts/stops (e.g on a screen rotation). I buy into both those reasons hence I'm trying to implement this. On the slides[2] page 45 We have an Activity calling a ContentProvider. Now the ContentProvider checks its local database, if the content is not there it sends an Intent to a service which fetches the content, inserts it into the ContentProvider, then the ContentProvider calls back to the Activity (with a ContentObserver) and the Activity can carry on. The question I have is how is this callback setup. The ContentProvider exposes simple methods, query, insert, update, delete which don't seem easy to adapt to a callback interface. It could be implemented by a Cursor which is designed to block, but that could be problematic as you don't' want to block your UI Thread. I'd appreciate if anyone could make this clearer to me, or show me some code. I'm hoping the Twitter app will be open sourced soon which apparently uses this architecture.
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Sep 1, 2010
I've read through the note of the topic "Developing Android REST Client Applications" from Google IO 2010, but I still have no idea on how to start. Can anyone show me a code example? Either the code for "Option A: Use a Service API" or "Option B: Use the ContentProvider API"
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Apr 14, 2010
I am a student in the process a building an Android app that can post a GPS track into a Rails application. I would like to do things the "Rails" way and take advantage of the REST. My rails application basically has 3 models at this point: users, tracks, and points. A user has_many tracks and a track has_many points. A track also has a total distance. Points have a latitude and longitude. I have successfully been able to create an empty track with:
curl -i -X POST -H 'Content-Type: application/xml' -d '<track><distance>100</distance></track>' http://localhost:3000/users/1/tracks
That is pretty cool. I am really impressed that rails do this. Just to see what would happen I tried the following:
curl -i -X POST -H 'Content-Type: application/xml -d '<track><distance>100</distance><points><point><lat>3</lat><lng>2</lng></point></points></track>' http://localhost:3000/users/1/tracks
Fail! The server spits back:
Processing TracksController#create (for 127.0.0.1 at 2010-04-14 00:03:25) [POST]
Parameters: {"track"=>{"points"=>{"point"=>{"lng"=>"2", "lat"=>"3"}}, "distance"=>"100"}, "user_id"=>"1"} User Load (0.6ms) SELECT * FROM "users" WHERE ("users"."id" = 1) ActiveRecord::AssociationTypeMismatch (Point(#-620976268) expected, got Array(#-607740138)): app/controllers/tracks_controller.rb:47:in 'create'
It seems my tracks_controller doesn't like or understand what it's getting from the params object in my tracks_controller.rb:
def create @track = @user.tracks.build(params[:track])
My xml might be wrong, but at least Rails seems to be expecting a Point from it. Is there anyway I can fix TracksController.create so that it will be able to parse xml of a track with nested multiple points? Or is there another way I should be doing this entirely?
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Mar 2, 2010
In short, I am writing an Android application that I want to have pull data from a remote database. I was looking into .NET web services, but this http://stackoverflow.com/questions/297586/how-to-call-web-service-with-android question pointed me away from that direction.
Is REST as simple as writing some short PHP to handle something like https://www.example.com/data.php?employee=michael and have it return relevant XML or JSON data? That to me seems like what has been described to me by various sites and videos. Also, is this the best way to do this kind of operation over the internet for mobile devices, desktop applications, etc?
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Jul 22, 2009
How can I access the rest of the stuff in the drawable folder, such as the Android emoticons? I can use many of what is in the drawable folder by doing "drawable.XXX" but not all of them are available when I do that.
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Sep 1, 2010
New to Andriod but seem to have figures most out, ...but.. I have added my hotmail account under the mail app standard on the sonyericsson x10, and the mail is comming through, but when I delete it on the web or laptop it does not delete it on phone neither does it update that I have read the email. It does sync but emails stay on phone. Any body have a fix or answer for me?
Also I have several folders in my hotmail account, the phone only displays Inbox, drafts, outbox, sent, trash. How do I get the rest of the folders on the phone?
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Jul 22, 2010
Can somebody please show me resources that would let me make REST calls from my Android Phone to Amazon? I need to get Item details for that Item. I tried to look for documentation but I really couldn't find it. I am sorry if this has been answered before but I couldn't find the answer.
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Nov 10, 2010
I am working with custom microSD cards. I'd like to be able to maintain power to the microSD card while the handset sleeps.
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Oct 12, 2010
I am designing a screen , in which I am showing a gallery along with other UI components . The selected item is shown in the center of the gallery . I want to make the size of selected item somewhat bigger than the rest items of gallery .
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Oct 4, 2010
I have some back end web services, SOAP web services. I would like to create an android client to use these. I'm under the impression that SOAP style web services are non trivial to setup on android, and I would prefer to use REST if possible Is there any utility that can convert REST calls to SOAP and back again? Or will I need to create my own application that listens for REST calls, makes the appropriate SOAP calls, then sends the response back as REST?
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