Read Contents of a Url in Android

Read contents of a URL in Android

From the Java Docs : readingURL

URL yahoo = new URL("http://www.yahoo.com/");
BufferedReader in = new BufferedReader(
            new InputStreamReader(
            yahoo.openStream()));

String inputLine;

while ((inputLine = in.readLine()) != null)
    System.out.println(inputLine);

in.close();

Instead of writing each line to System.out just append it to a string.

Android - How can I read a text file from a url?

Try using an HTTPUrlConnection or a OKHTTP Request to get the info, here try this:

Always do any kind of networking in a background thread else android will throw a NetworkOnMainThread Exception

new Thread(new Runnable(){

  public void run(){

    ArrayList<String> urls=new ArrayList<String>(); //to read each line
    //TextView t; //to show the result, please declare and find it inside onCreate()

    try {
         // Create a URL for the desired page
         URL url = new URL("http://somevaliddomain.com/somevalidfile"); //My text file location
         //First open the connection 
         HttpURLConnection conn=(HttpURLConnection) url.openConnection();
         conn.setConnectTimeout(60000); // timing out in a minute

         BufferedReader in = new BufferedReader(new InputStreamReader(conn.getInputStream()));

         //t=(TextView)findViewById(R.id.TextView1); // ideally do this in onCreate()
        String str;
        while ((str = in.readLine()) != null) {
            urls.add(str);
        }
        in.close();
    } catch (Exception e) {
        Log.d("MyTag",e.toString());
    } 

    //since we are in background thread, to post results we have to go back to ui thread. do the following for that

    Activity.this.runOnUiThread(new Runnable(){
      public void run(){
          t.setText(urls.get(0)); // My TextFile has 3 lines
      }
    });

  }
}).start();

how to get data from url in android studio

Your code is fine. It reads HTML from a URL

This site requires Javascript to work

HttpUrlConnection does not use or render dynamic Javascript created web pages, only static html content

Try a different endpoint for JSON data...

Also, please look into using a proper HTTP library for Android rather than using AsyncTask like Okhttp or Volley

how to read and use the content of a website in android app

This part of code can help you:

public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    new HttpTask().execute("http://www.google.com");
}

public String getWebPage(String adresse) {

    HttpClient httpClient = new DefaultHttpClient();
    HttpGet httpGet = new HttpGet();

    InputStream inputStream = null;

    String response = null;

    try {

        URI uri = new URI(adresse);
        httpGet.setURI(uri);

        HttpResponse httpResponse = httpClient.execute(httpGet);
        int statutCode = httpResponse.getStatusLine().getStatusCode();
        int length = (int) httpResponse.getEntity().getContentLength();

        Log.v(LOG_THREAD_ACTIVITY, "HTTP GET: " + adresse);
        Log.v(LOG_THREAD_ACTIVITY, "HTTP StatutCode: " + statutCode);
        Log.v(LOG_THREAD_ACTIVITY, "HTTP Lenght: " + length + " bytes");

        inputStream = httpResponse.getEntity().getContent();
        Reader reader = new InputStreamReader(inputStream, "UTF-8");

        int inChar;
        StringBuffer stringBuffer = new StringBuffer();

        while ((inChar = reader.read()) != -1) {
            stringBuffer.append((char) inChar);
        }

        response = stringBuffer.toString();

    } catch (ClientProtocolException e) {
        Log.e(LOG_THREAD_ACTIVITY, "HttpActivity.getPage() ClientProtocolException error", e);
    } catch (IOException e) {
        Log.e(LOG_THREAD_ACTIVITY, "HttpActivity.getPage() IOException error", e);
    } catch (URISyntaxException e) {
        Log.e(LOG_THREAD_ACTIVITY, "HttpActivity.getPage() URISyntaxException error", e);
    } finally {
        try {
            if (inputStream != null)
                inputStream.close();

        } catch (IOException e) {
            Log.e(LOG_THREAD_ACTIVITY, "HttpActivity.getPage() IOException error lors de la fermeture des flux", e);
        }
    }

    return response;
}

private class HttpTask extends AsyncTask<String, Integer, String> {

    @Override
    protected String doInBackground(String... urls) {
        // TODO Auto-generated method stub
        String response = getWebPage(urls[0]);
        return response;
    }

    @Override
    protected void onPostExecute(String response) {
        Log.i(LOG_THREAD_ACTIVITY, "HTTP RESPONSE" + response);
        textViewConsole.setText(response);
    }

    @Override
    protected void onPreExecute() {
        // TODO Auto-generated method stub
        super.onPreExecute();
    }

    @Override
    protected void onProgressUpdate(Integer... values) {
        // TODO Auto-generated method stub
        super.onProgressUpdate(values);
    }

}

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