aprire un file .txt da res/raw

no forse non ci stiamo capendo

private String inputStreamToString(InputStream helpfile) {
// TODO Auto-generated method stub
return null;
}

questa funzione dovrebbe ritornare la stringa con cui vuoi valorizzare la textview. guarda prova a far ritornare una stringa fissa, tipo return "testo di prova"

Se inserisco return "testo di prova" funzia.

e certo.... in quella funzione devi tu scrivere il codice che ti estrae il testo dall'inputstream, ho fatto una rapida ricerca su google e ho trovato il seguente codice, vedi se lo puoi adattare alle tue esigenze

codice:

---

    public String convertStreamToString(InputStream is)
            throws IOException {
        /*
        * To convert the InputStream to String we use the
        * Reader.read(char[] buffer) method. We iterate until the
        * Reader return -1 which means there's no more data to
        * read. We use the StringWriter class to produce the string.
        */
        if (is != null) {
            Writer writer = new StringWriter();

            char[] buffer = new char[1024];
            try {
                Reader reader = new BufferedReader(
                        new InputStreamReader(is, "UTF-8"));
                int n;
                while ((n = reader.read(buffer)) != -1) {
                    writer.write(buffer, 0, n);
                }
            } finally {
                is.close();
            }
            return writer.toString();
        } else {       
            return "";
        }
    }

---

Ok, teoricamente l'ho capito. Sto provando ad implementarlo ma ho delle difficoltà, in particolare con i metodi autogenerati try/catch.

<br /> setContentView(R.layout.help);<br /> InputStream helpfile = getResources().openRawResource(R.raw.quizhelp);<br /> TextView helpText = (TextView) findViewById(R.id.helptext);<br /> String helpstring;<br /> try {<br /> helpstring = inputStreamToString(helpfile);<br /> helpText.setText(helpstring);<br /> } catch (IOException e) {<br /> // TODO Auto-generated catch block<br /> e.printStackTrace();<br /> }<br />

Ho dovuto implementarli xkè mi dava un errore (e quindi il consiglio try/catch)sul metodo inputStreamToString.

private String inputStreamToString(InputStream helpfile) throws IOException {<br /> // TODO Auto-generated method stub<br /> <br /> /*<br /> * To convert the InputStream to String we use the<br /> * Reader.read(char[] buffer) method. We iterate until the<br /> * Reader return -1 which means there's no more data to<br /> * read. We use the StringWriter class to produce the string.<br /> */<br /> if (helpfile != null) {<br /> Writer writer = new StringWriter();<br /> <br /> <br /> char[] buffer = new char[1024];<br /> try {<br /> Reader reader = new BufferedReader(<br /> new InputStreamReader(helpfile, "UTF-8"));<br /> int n;<br /> while ((n = reader.read(buffer)) != -1) {<br /> writer.write(buffer, 0, n);<br /> }<br /> } finally {<br /> helpfile.close();<br /> }<br /> return writer.toString();<br /> } else { <br /> return "";<br /> }<br /> }


Spero di non aver scritto un mucchio di stronzate!roftl

Si effettivamente nel codice che avevo postato manca il blocco catch. Implementa sia il catch che il finally. Era questo il dubbio?

ancora niente. Pagina totalmente vuota.

public class HelpActivity extends Activity {<br /> /** Called when the activity is first created. */<br /> @Override<br /> public void onCreate(Bundle savedInstanceState) {<br /> super.onCreate(savedInstanceState);<br /> setContentView(R.layout.help);<br /> InputStream helpfile = getResources().openRawResource(R.raw.quizhelp);<br /> TextView helpText = (TextView) findViewById(R.id.helptext);<br /> InputStream helpstring;<br /> try {<br /> helpstring = inputStreamToString(helpfile);<br /> System.out.println("ciao_string");<br /> (non stampa)<br /> <br /> } catch (IOException e) {<br /> // TODO Auto-generated catch block<br /> e.printStackTrace();<br /> }<br /> <br /> <br /> }<br /> <br /> private InputStream inputStreamToString(InputStream helpfile) throws IOException {<br /> // TODO Auto-generated method stub<br /> <br /> /*<br /> * To convert the InputStream to String we use the<br /> * Reader.read(char[] buffer) method. We iterate until the<br /> * Reader return -1 which means there's no more data to<br /> * read. We use the StringWriter class to produce the string.<br /> */<br /> if (helpfile != null) {<br /> Writer writer = new StringWriter();<br /> <br /> <br /> char[] buffer = new char[1024];<br /> try {<br /> Reader reader = new BufferedReader(<br /> new InputStreamReader(helpfile, "UTF-8"));<br /> int n;<br /> while ((n = reader.read(buffer)) != -1) {<br /> writer.write(buffer, 0, n);<br /> System.out.println("ciao");<br /> (Non stampa!)<br /> }<br /> } finally {<br /> helpfile.close();<br /> }<br /> return helpfile;<br /> } else { <br /> return null;<br /> }<br /> }<br /> }

Appena torno a casa stasera faccio qualche prova e ti faccio sapere

Quote:

---

Originariamente inviato da Anular

ancora niente. Pagina totalmente vuota.

public class HelpActivity extends Activity {<br /> /** Called when the activity is first created. */<br /> @Override<br /> public void onCreate(Bundle savedInstanceState) {<br /> super.onCreate(savedInstanceState);<br /> setContentView(R.layout.help);<br /> InputStream helpfile = getResources().openRawResource(R.raw.quizhelp);<br /> TextView helpText = (TextView) findViewById(R.id.helptext);<br /> InputStream helpstring;<br /> try {<br /> helpstring = inputStreamToString(helpfile);<br /> System.out.println("ciao_string");<br /> (non stampa)<br /> <br /> } catch (IOException e) {<br /> // TODO Auto-generated catch block<br /> e.printStackTrace();<br /> }<br /> <br /> <br /> }<br /> <br /> private InputStream inputStreamToString(InputStream helpfile) throws IOException {<br /> // TODO Auto-generated method stub<br /> <br /> /*<br /> * To convert the InputStream to String we use the<br /> * Reader.read(char[] buffer) method. We iterate until the<br /> * Reader return -1 which means there's no more data to<br /> * read. We use the StringWriter class to produce the string.<br /> */<br /> if (helpfile != null) {<br /> Writer writer = new StringWriter();<br /> <br /> <br /> char[] buffer = new char[1024];<br /> try {<br /> Reader reader = new BufferedReader(<br /> new InputStreamReader(helpfile, "UTF-8"));<br /> int n;<br /> while ((n = reader.read(buffer)) != -1) {<br /> writer.write(buffer, 0, n);<br /> System.out.println("ciao");<br /> (Non stampa!)<br /> }<br /> } finally {<br /> helpfile.close();<br /> }<br /> return helpfile;<br /> } else { <br /> return null;<br /> }<br /> }<br /> }

---

ciao scusami ma non ho potuto ancora avuto tempo di provare il codice, però ad occhio e croce ad uno sguardo veloce....

penso dovresti cambiare

codice:

---

helpstring = inputStreamToString(helpfile);

---

in

codice:

---

helpText.setText(inputStreamToString(helpfile));

---

e

codice:

---

return helpfile;

---

in

codice:

---

return (writer.toString());

---

nada. sta diventando un'impresa :D

allora... ho testato velocemente il seguente codice e funziona tutto, confrontalo con il tuo

codice:

---

package myTest.test;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.Reader;
import java.io.StringWriter;
import java.io.Writer;

import android.app.Activity;
import android.os.Bundle;
import android.widget.TextView;

public class main extends Activity
{
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState)
    {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
       
        InputStream helpfile = getResources().openRawResource(R.raw.indirizzi);
        TextView helpText = (TextView) findViewById(R.id.TextView01);
       
        try
        {
                helpText.setText(inputStreamToString(helpfile));
        }
        catch (IOException e)
        {
                e.printStackTrace();
        }
    }

    private String inputStreamToString(InputStream helpfile) throws IOException
    { 
                if (helpfile != null)
                { 
                    Writer writer = new StringWriter(); 
                 
                    char[] buffer = new char[1024]; 
                   
                    try
                    { 
                        Reader reader = new BufferedReader(new InputStreamReader(helpfile, "UTF-8")); 
                        int n;
                        while ((n = reader.read(buffer)) != -1)
                        { 
                            writer.write(buffer, 0, n); 
                            System.out.println("ciao"); 
                        } 
                    }
                    catch (IOException e)
                    {
                            e.printStackTrace();
                    }
                    finally
                    { 
                        helpfile.close(); 
                    } 
                   
                    return writer.toString(); 
                }
                else
                {         
                    return null; 
                }
    }
}

---