Question

As I can refresh the content of an activity?, for example, I have a menu and a button send me an application content that displays information online, but to go back and return again, the information is not updated.

This is my Activity.

public class Bovalpo extends Activity {

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_bovalpo);

    Button buttonExit = (Button)this.findViewById(R.id.cerrar);
    buttonExit.setOnClickListener(
        new View.OnClickListener() {
            public void onClick(View v) {
                System.exit(0);
            }
        }
    );


    TextView myListView = (TextView) findViewById(R.id.tv);
    try {
        myListView.setText(getPage());
        if(getPage().contains("Abierto")){
            myListView.setTextColor(Color.parseColor("#008000"));
        }else{
            myListView.setTextColor(Color.parseColor("#FF0000"));
        }
    } catch (MalformedURLException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }

    }

private String getPage() throws MalformedURLException, IOException {
    HttpURLConnection con = (HttpURLConnection) new URL("http://www.bovalpo.com/cgi-local/xml_bcv.pl?URL=1").openConnection();
    con.connect();

    if (con.getResponseCode() == HttpURLConnection.HTTP_OK) {
        return inputStreamToString(con.getInputStream());
    } else {
        return null;
    }
}


private String inputStreamToString(InputStream in) throws IOException {
    BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(in));
    StringBuilder stringBuilder = new StringBuilder();
    String line = null;

    while ((line = bufferedReader.readLine()) != null) {
        stringBuilder.append("Mercado: " + line + "\n");
    }

    bufferedReader.close();
    return stringBuilder.toString();
}



public void lanzar(View view){
 Intent i = new Intent(this, xml7009.class);
 startActivity(i);
}


public void lanzar3(View view){
 Intent i = new Intent(this, tabla7009.class);
 startActivity(i);
} 

public void lanzar4(View view){
    Intent i = new Intent(this, xml6503.class);
    startActivity(i);
}

public void  onClick(View arg0) {
      // TODO Auto-generated method stub
      finish();
    }  

}

Answer 1

put your code here

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

       // make your work to data bind


}