Question

I’m trying to get textview to display a number, but it will not.

My activity code:

package com.example.gotteron;

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

public class Classement extends Activity{

    TextView textview;
    public void onCreate(Bundle savedInstanceState){
        super.onCreate(savedInstanceState);
        setContentView(R.layout.classement);
        GetCode getCode = new GetCode();
        textview = (TextView)findViewById(R.id.textView1);
        try {
            textview.setText(getCode.test());
        } catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

    }
}

/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

Class to get HTMl:

//Package
package com.example.gotteron;

//Import
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.URL;
import java.net.URLConnection;

public class GetCode{

    public String test() throws Exception{

        //Recupérer le code HTML de la page
        URL oracle = new URL("http://www.nationalleague.ch/NL/fr/");
        URLConnection yc = oracle.openConnection();
        BufferedReader in = new BufferedReader(new InputStreamReader(
                yc.getInputStream()));
        String inputLine;
        String s1 = "";
        while ((inputLine = in.readLine()) != null)
            s1 = s1 + inputLine;
        in.close();

        int Berne = s1.indexOf(">SC Bern</td>");
        String s3 = String.valueOf(Berne); 
        return s3;
    }
}

/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

XML file

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:background="@drawable/background">

    <TextView
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/firstPosition" />

</LinearLayout>

/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

Manifest

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.gotteron"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="17" />

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name="com.example.gotteron.Principal"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <activity android:name="Classement" android:label="@string/app_name"></activity>
        <activity android:name="Calendrier" android:label="@string/app_name"></activity>
        <activity android:name="Live" android:label="@string/app_name"></activity>
    </application>
    <uses-permission android:name="android.permission.INTERNET"></uses-permission>
</manifest>

/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

EDIT:

Thanks for the code but there’s still a problem. When I run the Application the textview displays his default message. During this time, the logcat displays a lot of messages:
http://pastebin.com/244grjYt
and at the end the app crashes

Answer 1

Essentially, this is what the other answers are about. Since you haven’t check anything as answer, maybe this will help.

public class MyClass extends Activity {
    TextView textview;
    public void onCreate(Bundle bundle) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.classement);
        textview = (TextView)findViewById(R.id.textview);
        new NetworkOperation().execute();
    }

    private class NetworkOperation extends AsyncTask<Void, Void, String> {
        protected String doInBackground(Void... params) {
            try {
                URL oracle = new URL("http://www.nationalleague.ch/NL/fr/");
                URLConnection yc = oracle.openConnection();
                BufferedReader in = new BufferedReader(new InputStreamReader(yc.getInputStream()));
                String inputLine;
                String s1 = "";
                while ((inputLine = in.readLine()) != null)
                    s1 = s1 + inputLine;
                in.close();
                int Berne = s1.indexOf(">SC Bern</td>");
                String s3 = String.valueOf(Berne); 
                return s3;
            }
            catch (IOException e) {
                e.printStackTrace();
            }
            return null;
        }      

        protected void onPostExecute(String result) {
            textview.setText(result);
        }
    }
}