Java get text from website

To get text from normal web, not txt page, we use this class.

class RequestTask extends AsyncTask<String, String, String>{

     @Override

         

     protected String doInBackground(String... url) {

         

     HttpClient client = new DefaultHttpClient();

     HttpGet httpget = new HttpGet(url[0]);

     try {

     HttpResponse getResponse = client.execute(httpget);

     final int statusCode = getResponse.getStatusLine().getStatusCode();

     if(statusCode != HttpStatus.SC_OK) {

     Log.w("MyApp", "Download Error: " + statusCode + "| for URL: " + url);

                      return null;

                  }

     String line = "";

     StringBuilder total = new StringBuilder();

     HttpEntity getResponseEntity = getResponse.getEntity();

     BufferedReader reader = new BufferedReader(new InputStreamReader(getResponseEntity.getContent())); 

            while((line = reader.readLine()) != null) {

                total.append(line);

           }

          line = total.toString();

           return line;

          } catch (Exception e) {

             Log.w("MyApp", "Download Exception : " + e.toString());

          }

          return null;

     }

     @Override

     protected void onPostExecute(String result) {

             

     t.setText(result);

     }

     }

Call inside a progressBar to wait.

mProgressDialog = new ProgressDialog(this);

           mProgressDialog.setMessage("Loading, please wait...");

            mProgressDialog.show();

        new Thread(new Runnable(){

            public void run(){

           

                new RequestTask().execute("http://llkqe.blogspot.com/2016/06/blog-post.html");

                if(mProgressDialog.isShowing())

                {

                   mProgressDialog.dismiss();

                }

            }

        }).start();

    }

new RequestTask().execute("http://llkqe.blogspot.com/2016/06/blog-post.html");

Here is what we get.

To get needed String, we add a special String, here is “Đây” and split, add to arrayList.

Declare arraylist.

ArrayList<String> read = new ArrayList<String>();

Replace code in fuctionc @Override

          protected void onPostExecute(String result) {

by this.

String l=result.toString();

              

String a[] = l.split(" ");

for (int i = 0; i < a.length; i++) {    

if(a[i].equals("Đây")){

read.add(a[i+7]);                    

  }

}

String r="";

for (int i = 0; i < read.size(); i++) {

r=r+read.get(i)+"\n";

}

t.setText(r+"");

Run to see the result.

To avoid crash, check internet connection before open new screen, show Toast to inform user.