Android :: Java Example Of Processing JSON Response?

Aug 27, 2010

I am writing a simple Android app and have a database that will send back information into the app. I am new to Android and am looking for a simple example that demonstrates how the Android App can process a JSON response received from a HTTP request. I need to see what classes are used for Android apps to process a HTTP response. A reference to a good tutorial, or if you're keen, write a very basic method to do the job.

Android :: Java example of processing JSON response?


Android :: WebView And Response Processing

Nov 8, 2010

Currently, I use a regular activity with some EditText fields as a registration screen in my application.The inputs are used to construct a soap message which is posted to the registration server, with the response being parsed to do some configuration of the application.I'd like to change this to have the registration page load in a WebView instance, so that the registration process takes place on an external web page.This would make it easier to make changes to the registration process without having to deploy a new build, as it would just be a matter of changing the web page that is loaded in the WebView.The question is would there be any way for me to get the response that is sent back from my registration server to the client? From what I can tell, if I went this route, there wouldn't be a way for me to parse the response like I currently do to initialize the application settings.

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Android :: Com.google.gson.JsonParseException - Failed Parsing JSON Source - Java.io.BufferedReader To Json

Jul 29, 2010

I am trying to parse a json object using gson in Android application ,the test passed quite gracefully in emulator ,while i used the actual device ,the problems started.
I am getting the exception as follows.

CODE:...................

I am using gson 1.4 version.The code i use is:

CODE:..............

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Android :: Parsing A JSON Response From A .Net Webservice

Apr 21, 2010

Just to get this out in the open I am new to JAVA, KSOAP, and JSON. So I'll try to explain this the best I can.

A while ago I created a webservice to be consumed by Blackberry Apps that we're built using the plug in for Visual Studio. Now the project I am working on, I want to consume the same webservice for Android devices. For the most part I have the base code for the Android app done and working. Here's my problem:

I can successfully call the webservice and get a response. I know from creating the webservice that it sends a JSON response. My problem is trying to parse through the JSON response. I have found a few examples that I have been suiting to my needs however I am hung up on one thing.

In the JSON each element is preceeded by "anyType" which is forcing my code to return no results (Ultimately I am binding the data to an ArrayList) Here's what I get if I "getProperty(0).toString()...anyType{Artist=anyType{TrackName=Champagne Supernova;};


Here is the code I am using to parse the JSON Object....

CODE:..........

WebService Code:

CODE:.....

Sample of XML Output from a browser:

CODE:......

I have a feeling I will need to implement a Class, and Getters/Setters on the Android side. I'm just not sure how to go about doing that.

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Android :: Parsing The Data In JSON Response

Sep 30, 2010

Here I am posting the Json Response:

CODE:......

Now I just want to parse the data

CODE:......

From the Category Tag. I am able to parse from the Result Tag.

Here is my code :

CODE:..................

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Android : How To Decode Html Returned As Json Response?

Sep 23, 2010

I am getting following encoded html as a json response and has no idea how to decode it to normal html string, which is an achor tag by the way.

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Android :: Parsing JSON In Java

Oct 8, 2009

I'm trying to parse JSON in android but am having trouble with accessing sub children of an object. I am trying to extract augment from the following. Code...

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Android :: How To Parse JSON In Java?

Apr 7, 2010

I have the following JSON text that i need to parse to get page Name, pagePic, post_id, etc. What is the required code? page Info: { page Name: abc pagePic: http://profile.ak.fbcdn.net/object2/367/... }

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Android :: JSON Array Iteration In Java

Aug 4, 2010

I am building an android app that needs to download and synchronise with an online database, I am sending my query from the app to a php page which returns the relevant rows from a database in JSON format.

Tell me the best way to iterate through a JSON array?

I receive an array of objects:

[{json object},{json object},{json object}]

What is the simplest piece of code I could use to access the JSONObjects in the array?

Now that I think of it the method I used to iterate the loop was:

CODE:.............

So I guess I had was somehow able to turn the returned Json into and iterable array. Any Ideas how I could achieve this?

I apologise for my vaguness but I had this working from an example I found on the web and have since been unable to find it.

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Android :: Send A Json Object From Java To .net Client?

Oct 29, 2010

From my android client i am sending a json to string object.but the .net client is getting it as empty string. here is my code...

is this header format correct?

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Android :: Send Json String To .NET REST Service From Java?

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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Android :: RESTlet Tutorial App Does Not Return Java Objects (JSON Only) / Sort It Out?

Nov 15, 2010

I've been looking the source code available from the Restlet official tutorial.

I am trying to hit the Restlet server using the Android app from he tutorial adn I only get the JSON response, not the Java Object. I tried using all libraries and extensions, nothing works. When I hit the tutorial url though (http://restlet-example-serialization.appspot.com/contacts/123) I get the desired response. Any ideas? BTW, I am just using the server (GAE) in the example, not the GWT frontend.

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Android :: Best Practice To Parse A JSON Object On Client In Java And Droid?

Aug 25, 2010

In my Android client I want to receive JSON objects from a server. By googling I found a lot of different possibilities how to best parse the InputStream from the Server, but most of them wrote their own parser. Isn't there a library which does this parsing for me? Or how should I best implement it by myself?

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Android :: Library / Method To Serialize - Deserialize Java Bean To Json In Droid?

Aug 2, 2009

Do you know a library or method to serialize / deserialize Java bean to json in android?

how i can introspect a javabean and fill its fields?

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Android :: JSON Deserializing With Json Parsing In Droid App / What It Means?

Sep 24, 2010

What is "deserializing Json" means, I had seen this term on the Web. I don't know the meaning od this particular term So, it would be great if anybody can explain me about What it means actually?

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Android :: Convert Json Array To Normal Java Array

Aug 3, 2010

Is there a way to convert JSON Array to normal Java Array for android ListView data binding?

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Android :: Parsing YQL JSON In Java - Android

Aug 31, 2010

Here is the JSON result:

CODE:...................

UPDATE: And here is my code (assume buildQuery and RestClient are valid):

CODE:...................

I get the following Exception on JSONArray quotes = query.getJSONArray("results");:

org.json.JSONException: Value {"quote": ...

The value of "quote" is printed in the debugger.

How can I parse this correctly?

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Samsung Captivate :: Response From ATT's Executive Response Team Over FCC GPS Complaint

Sep 8, 2010

Back when we all found out about the bad gps on this phone there was talk to file a complaint against att for false advertising of gps capabilities with the Captivate. Well, I was pissed and went ahead and filed the complaint. I received a letter in the mail a few weeks ago that the FCC had received the complaint.Today, I received a response from ATT in my inbox.

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Sprint HTC Hero :: Inputing Text - Get No Response Or Sluggish Response

Mar 18, 2010

anyone else having issues using the keyboard / inputing text while the hero is lying flat down on a table? i sometimes get no response or sluggish response when its on a table and i'm trying to send e-mail or texting. I tried re-calibrating and works fine when I hold it upwards/regular.

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Android :: Processing Raw Audio Data

Apr 10, 2009

I want to develop an app that lets one intercept raw audio data sent for playback (possibly by a different app), and apply audio enhancements over this raw data.Does Cupcake allow such filtering of audio data? If so, which API should I use? I understand this may not be possible at an application level for security reasons.I'm trying to see if this is possible with native code linking to public or private API of Android.

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Android :: How Does Touch Gesture Processing?

Dec 15, 2009

I want to know that android has a touchscreen requirement about hardware and software.And how does touch gesture processing where, for example, in driver layer or framework or application,

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Android :: Processing RSS Feeds With Namespaces

Apr 23, 2010

I'm trying to write an XML parser that takes an RSS feed & fetches the image urls shown in the url attribute of the <media:thumbnail> tag. This is all being done via android.Util.Xml, & is an adaptation of the code shown here. An example RSS feed that I'm trying to use is the BBC News RSS feed. However, media is an additional namespace & (probably) as a result my parser isn't working as it should. A version of my parse method is below. Is there any (no doubt simple) way to get my list of image URLs working?

..................

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Android :: Activity Background Processing

Apr 17, 2010

"Note that when you write an activity, you can make it stop or continue running when it is moved to the background (see onStop() in Activity Lifecycle). For activities that download data from the network, it's recommended to let them continue downloading so the user can multi-task." As far as I was aware I had to create a service if I wanted to have a background activity such as a media player, internet download, or processing of data in files on the SD card continue when the activity was no longer in the foreground.I went and reread the onStop information on the "Activity Lifecycle" page, which was referred to. But I didn't find any mention of how an activity might continue to run in the background after onStop was called.

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Android :: Processing Events In SurfaceView

Jun 10, 2009

I am creating a custom Widget which extends SurfaceView and I am planning to use it for camera preview.In the main activity I tried to implement some event listeners but can't catch any event.If I press a button the LogCat outputs "Continuing to wait for key to be dispatched" line.Does anyone know how to implement event listeners in main activity using SurfaceView classes?

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Android :: App Is Getting - Trouble Processing - Error

Aug 10, 2010

My android app was running ok under Eclipse, then I tried to add some GridView sample code from some online examples and now it will not build/run anymore.

I keep getting the major error:

CODE:..

Attempt to include a core VM class in something other than a core library.

I have never put anything to do with 'SocketFactory' in any of my code. I searched all of my code and can't find any code that I did that contains the SocketFactory.class.

I deleted my xml's and classes that I was working on that had to do with the GridView and reverted back to the code I had before, when it was running - but now I continue to get the above error. I even try to use 'Clean' but the error continues. Does anyone know what I should do about this error?

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Android Image Processing Functions

Oct 15, 2011

I want to perform various image processing functions such as threshold,equalize etc on the image i capture from the camera...What should i use in order to do that?

Also,when i installed the app in my phone, after clicking the pic, the next screen appears, and after clicking the button for performing other functions, force close comes up...what could be the reason,because my code works fine without the camera portion...

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Android :: Processing And Regular Input Apps

Oct 7, 2010

Processing has Android support and it seems to be pretty awesome from my 10 minutes of playing with it. But I would like to make a regular (nongraphics) application like a twitter feed reader or something. So is there something like Processing that can do regular apps? Besides Titanium.Basically I am looking for anything that will make coding for android easier, processing was so easy to get working that I was very happy with it, but it is for graphics only. Titanium didn't give me the same wow factor and it isn't open so that kind of takes away from it. What other tools are out there?

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Android :: Image Processing On Picture Taken From Camera

Jan 11, 2010

I'm writing an application for Android. I need to make some image processing on the picture taken from camera.I use Camera.PictureCallback to get the photo, and I get picture in byte array.The problem is I want to make operations on every pixel of photo (some filtering and other stuff) so I guess, have photo in byte array is not a bad idea. But I don't know how interpret information in this byte array... The only way I know to make the processing is use BitmapFactory.decodeByteArray() and then use Bitmap object. Is this a good way to handle a lot of image processing?

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Android :: Obtaining Video Frames For Processing

Dec 31, 2009

I am trying to decode and obtain all frames in a video stream, each of which would be processed by a native signal processing engine and re-encoded back to a MPEG4/MP4 file. I noticed that there was a getFrameAt() function in earlier versions of SDK but its not available in v 1.6 on which I am working. As I am fairly new to Android, I would like to know from more experienced people around here as to how I can extract video frames into a buffer for processing.

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Android :: How Can I Do Image Processing On JPEG Data

Apr 13, 2009

I am confused on how to implement image processing algorithm on JPEG data.I have set P.setpicturesize (640,480) so the camera.takepicture (null,null,Imagecapture callbck) returns the image data. Void onPictureTaken(byte[] data, Camera Camera) returns JPEG data, but(x = data.length), the value of x is less than 640*480 bytes.Please kindly let me know how can I start editing pixel information of the image and image comparison algorithms.

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