I have been searching for a way to get the json data from a URl (for example: http://search.twitter.com/trends.json) and display it in a listview. Couldnt get a perfect example to get it done. Can anyone plz help me out by getting the solution and providing a good example of how to do it...
found this tutorial : http://damonsk.com/2010/01/jsonarray-httpclient-android/
Android comes with Json-lib so parsing JSON is easy. You just need to use the HTTPclient classes to retrieve the data from the URL, and you can use the JSONObject class to parse the JSON. And write a ListAdapter to pull data from the JSONObject.
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I have a problem. I am parsing a JSON file from a website, and want to go through it using a for loop and display the content each JSON object contains. Each JSON object should correspond to one for loop cycle, and it should contain a header where a title and some information get displayed, and a ListView with more information about the JSON object. How would I do that the best way ?
The amount of JSON object is unknown and changes, so I assume all the views have to be created programmatically using a for loop.
It should look somewhat like this.
I'm not going to code that for you, but basically you could do the following:
Download JSON data with an AsyncTask
Parse JSON (you could GSON or Jackson) into a List<>
Use an ArrayAdapter or crate your own list adapter
Add the adapter to a ListView
Done
I'm using JSON for some Android Application. I am trying to store links in JSON but they are getting broken inside JSON like below :
11-21 01:15:52.080: D/output(3775): "video_url": "http:\/\/love.com\/bunny.mp4",
I'm putting data like below :
jsonObject.put("thumb", "http://love.com//poster.jpg");
jsonObject.put("url", "http://love.com/bunny.mp4");
jsonObject.put("name", "Bunny");
jsonArray.put(jsonObject);
Anybody has any ideas about this problem?
The strings in JSON are getting escaped. You can either write a simple function to unescape them yourself or use a library which has built in functions like GSON or Jackson.
I personally used this library in the past
http://commons.apache.org/proper/commons-lang/apidocs/org/apache/commons/lang3/StringEscapeUtils.html
It provides a function: unescapeJson(String) which will give you your original links back. Just include it in your project and call the method.
I have json with some objects in it. And only one object from json i need. So which approach will be better for speed and performance - parse only this object or parse whole document instead?
If you want to show only the particular JSON Object which may be either inside a JSON Object or JSON array itself then you just parse that particular JSON Object instead of parsing whole document.
If you are not going to use rest of the data, you can just parse the item you only need.
In theory, just the object would get you a result faster with lesser work times. So just parse the object you need.
Hi need to call JSONArray
{"questions":{"poll_id":"1","user_id":"110","questions":"Captial of USA?"},"answers":[{"poll_id":"1","answer_id":"1","answer":"New York"},{"poll_id":"1","answer_id":"2","answer":"New Jersy"}]} in to the listview, im new to the android plz.... help me in this.
I got questions part, but i need to show answers part in the listview.
Its really simple JSON response.
To parse JSON response, there are 2 classes mainly useful: JSONObject, JSONArray and use methods of these classes: getJSONObject(), getJSONArray(), and getString().
I have list of records in xml format from my local host "http:localhost:810/Service1.svc/leb/GetAllCustomers"
Can I call this to android and list it in Textview or Spinner or in EditTextView or in any of the controls in android?
You should parse this xml file using SAX parse or Dom Parse in android and collect date in arrays/list/map according to your requirement here i am post some link to you get more information form there and get your ASAP.
http://www.androidpeople.com/android-xml-parsing-tutorial-using-saxparser
http://www.androidpeople.com/android-xml-parsing-tutorial-%E2%80%93-using-domparser
I hope this is very helpful to you.
Some links here for you.
1) Multithreading for Performance
to help you understand, how to download a file (example shows downloading an image) via AsyncTask.
2) Working with XML in Android
to help you parse your xml. Check these out. Good luck!
Yes you can do that.
Use Intent which takes URL as an argument.
In the URL you can mention the location/URI of your source.
Then, you can parse it to a string and store it.
Later, use ArrayAdapter to populate.
I can get you code if this is what you are trying to do.