Retrieve data from website in android app-ThrowExceptions

Exception or error:

How can we retrieve data from a website and parse it into a readable format in the Android application? This means I want to extract data from website and use it in my android application, formatted in my way. It could be any website.

How to solve:

You can use jsoup to parse any kind of web page. Here you can find the jsoup library and full source code.

Here is an example: http://desicoding.blogspot.com/2011/03/how-to-parse-html-in-java-jsoup.html

To install in Eclipse:

  1. Right Click on project
  2. BuildPath
  3. Add External Archives
  4. select the .jar file

You can parse according to tag/parent/child very comfortably

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Use this

DefaultHttpClient httpClient = new DefaultHttpClient();
HttpGet httpGet = new HttpGet("http://www.someplace.com");
ResponseHandler<String> resHandler = new BasicResponseHandler();
String page = httpClient.execute(httpGet, resHandler);

This can be used to grab the whole webpage as a string of html, i.e., “<html>...</html>"

Note
You need to declare the following ‘uses-permission’ in the android manifest xml file… answer by @Squonk here

And also check this answer

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You can do the HTML parsing but it is not at all recommended instead ask the website owners to provide web services then you can parse that information.

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Use the WebView. Simple!!

http://developer.android.com/reference/android/webkit/WebView.html

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