Android :: Getting JSON To Jersey Web Service And Consuming It
Jul 30, 2010
I've just recently started out with Android development, and have progressed to the point where I have written a very basic Hello World Jersey RESTful web service, and successfully called it from within my Android App.What I want to do now though, is send a new user record (just name and password for now) to a web service in JSON format.I can create my JSON in the Android app just fine, but I don't know how to get it into the HTTP Request in such a way that the corresponding web service that @Consumes JSON can get at it.
1) Create Android App User object
2) Turn that into JSON
3) Put it on the HTTP request
4) Call the web service
5) Web service retrieve JSON from request
6) Parse the JSON into server side User object and deal with as I see fit(Don't worry people, I'll be fine with this bit,
7) Profit! ;)
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Dec 17, 2009
I am trying to develop an application which calls the asp.net web service from android. I tried a lot but i got an exception while calling the SOAP_ACTION. I have tried with the localhost, local IP Address and also i have taken URL from the internet but it throws an exception.
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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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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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Mar 9, 2010
I just would like to ask if anyone have encountered this strange behavior with other phone models or specifically HTC Tattoo wherein I have this service running for almost 5 hrs then after sometime the system kills the service. The phone does not restart actually nor any other 3rd party applicaton running in the background. Its only the service I have is running. I was wondering what were the causes that would force to close my service. Another strange thing is that before the service was closed I still can see all the logs in the logcat but after I saw that the service was closed I don't see any log information already seems like the phone was totally disconnected from my eclipse.
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Sep 27, 2010
i searched the net to find something about how to pass arguments to JSON c# .net web service, but i didn't find anything useful for me. I have to pass arguments like GUID or at least Username and Password. Is params.put("var", ""); the right thing? How do i pass multiple parameters like this, let's say username and password?
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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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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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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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Nov 5, 2010
My Android application is calling a JSON service via HTTP and I would like to only allow my application to call the service and block others.What is the best way to do it?One way I can think of is using private/public key encryption. Can we embed a private key securely in the application?
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Oct 10, 2009
few weeks ago I encountered a problem. My Android SDK 1.5 emulator became very slow and CPU consuming. This happened earlier, but was irregular just removing AVDs usually helped. Few weeks ago I installed Android SDK 1.6, tried to move my dev environment there and noticed that emulator runs very slowly. I rolled back to 1.5 and noticed that the same problem is there. What's going on: - emulator startup is pretty slow; - sometimes emulator hangs on startup; - sometimes after startup is complete I see Force close/Wait dialog for some Android applications/services (Alarm clock, messaging) - applications inside the emulator run MUCH slower than they ran before, I see delays in response even in launcher, when I just switching between icons with arrow keys (at this time CPU usage according to the task manager is from 35 to 50%, i.e. one core is completely busy). - now, when I'm typing this message, emulator (clean, newly created AVD, I haven't installed nothing there, just out of the box) occupied 50% of my CPU (and 140MB of RAM). Hardware: Intel Core2Duo T7500 (2.2GHz) + 2GB RAM. OS: Vista I don't have any problems with 1.6 on Linux (Kubuntu 7.10), emulator starts quickly, responds in a flash, and seldom consumes more than 20% of CPU time (usually in case my application is working with DB).
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Feb 10, 2010
For instance, we are in SomeActivity and the activity has a button that invokes moving files from one dir to another (let's call it job).On Android things change. I know there's the AsyncTask that is probably provided to solve my case. There's even a good example of how it should be used. But since there's no guarantee of how long an Activity instance will live the AsyncTask should be cancelled on onSaveInstanceState (and restarted on onRestoreInstanceState). This means using AsyncTask there's no guarantee we are able to fully fulfill the job once started. In some cases as sending an http post request for creating a user I would not want to get in "user already exists for this login" trouble on reruning the AsyncTask. This is possible since the AsyncTask can be interrupted while the request is already sent (and the server actually is doing its job - creating a new user), but the AsyncTask is canceled before we got the response.
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Jul 21, 2009
I need to develop the application consuming the ksoap2 web services .i have written php script in server i need to call that from server using ksoap2 in the xml form and should parse that response in the form of list . how can i do it i tried some example on ksoap i am not getting the response in xml form can any bode give me some help regarding this.
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May 9, 2009
I need to implement a JNI which render image with 3-party native function. This function call is time consuming, it cost about 1s to return. I found during that time, even if I call the JNI within another Java thread, the whole Dalvik VM is blocked. UI is frozen. I guess that's because Dalvik doesn't implement Java thread with a native thread, so any time consuming native function call will block the whole VM. I wonder how to solve this problem. My best guess is I should create a pthread in JNI to call that 3-party native function. But I don't know how to implement this kind of JNI.
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Jun 16, 2010
Im having the a problem with maps. I killed it in task killer but it is still somehow consuming my battery. I haven't used it in 3 days.
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Jul 15, 2010
I'm a noob and this is my first phone with a data plan. I installed 3G watchdog and I see the usage going up even though I haven't done anything through the 3g network. I've done my app downloads and surfing via Wi-Fi and as the phone sits idle the usage creeps up ever so slightly. Is this from the phone updating and considered normal? The usage is about 1mb per day so after a month that's 30mb. Is something running in the background that shouldn't be and if so how do I find it?
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Mar 26, 2013
what's the lowest memory consuming text messaging app?And maybe with feature like sms backup. I am currently using GoSMS but it consumes a lot of precious memory and I also can't hibernate it as I won't be able to know if I have received any message!
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May 4, 2010
I'm trying to create an rss feed that my droid app reads but i have some holes that i can figure how to fix the json link page is http://www.mandarich.com/mandarichServer/mlb/indexbaseball.php when reading the json i can see where the icon is missing on some and cant figure out why. mainly only for citys like ney york and chicago(cities with two names)
and the code i have for the php is as follows ...
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Apr 16, 2010
I do not know the reason why am i getting same values of different JSON date values. Here is my code for parsing date values in JSON date format:
package com.jsondate.parsing;
import java.text.SimpleDateFormat; import java.util.Date;
import android.app.Activity; import android.os.Bundle; import android.util.Log; import android.widget.TextView;
public class JSONDateParsing extends Activity {/** Called when the activity is first created. */String myString;
@Override public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
TextView tv = new TextView(this);
//Date d = (new Date(1266029455L));
//Date d = (new Date(1266312467L));
Date d = (new Date(1266036226L));
//String s = d.getDate() + "-" + d.getMonth() + "-" + d.getYear() + d.getHours() +
d.getMinutes() + d.getSeconds();
// SimpleDateFormat sdf=new SimpleDateFormat("yyyy MMM dd @ hh:mm aa"); //Toast.makeText(this, d.toString(), Toast.LENGTH_SHORT);
Log.e("Value:", d.toString());
myString = d.toString();
String []words = myString.split(" ");
for(int i = 0;i < words.length; i++)
Log.e("Value:", words[i]);
myString = words[2] + "-" + words[1] + "-" + words[5] + " " + words[3];
tv.setText(myString);
setContentView(tv);
} }
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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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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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Jun 12, 2010
String s = [{"id": 1, "fields": {"Name": "hello1", "Age": "10" }}, {"id": 2, "model": "fields": {"Name": "hello2", "Age": "12"}}] I get error when I do this Code...
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Jun 12, 2010
Is there any code snippet for getting and posting JSON object to a http server in Android? I want to call the API in my website and get the JSON response to be displayed in the Android apps.
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Aug 26, 2010
Is there a good example showing how to query a server and downloading the response (JSON or XML)?
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Oct 7, 2010
Here I am posting my Json Response below:
CODE:.......
Now I want to have the following data Parsed "Phone", "Distance", "City", "Title", "State" and only "AverageRating" from the Tag "Rating".
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May 12, 2010
In the application I am developing, I would like to send messages in the form of JSON objects to a Django Server and parse the JSON response from the server and populate a custom listview.
From the little JSON knowledge I have, I thought this format for the response from server
CODE:...
How much knowledge of JSON should I have to accomplish this purpose? Also it would be great if someone could provide me links of some tutorials for sending and parsing JSON Objects.
Is there any advantage using GSON Parser rather than 'get' command for parsing JSON responses?
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Oct 29, 2010
How to parse following json return from facebook.i tried my self by searching on net But i failed.
CODE:.............
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Oct 9, 2010
I have this JSON to parse.
CODE:....
I would like to know how can I get the first value artist1 and then the second one artist2
This is what I am doing :
CODE:....
I got java.lang.classCastException for this JSONObject tmp = rowIt.next();
So there are my two questions: Do I need to use iterators in this case ? How do one should use them ?
Should the JSON looks like this ?
CODE:....................................
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Oct 13, 2010
I am trying to send a list of objects from an android mobile phone app to a j2ee webserver.
I create json objects and then put the objects into an jsonarray(in an order) and then send it. I am able to receive the jsonarray on the server, obtain the objects individually too, but the order of how I inserted the objects into the jsonarray is different compared to the order present in the received array. The order of elements plays a crucial role in my data processing. Could somebody please tell me a workaround for this.
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Aug 30, 2010
I want to pull out the user block. The JSON result will always change, sometimes 4 users will be returned, sometimes 10 etc...
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