Question

I’m pretty new to android-programming.
Can you help me, what i need to show local highscores table in this activity?
Am I need to create some TextViews in it and in xml?
Where I can found some examples to see how it works?

Highscore activity

import game.main.R;
import android.app.Activity;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.widget.TextView;

public class Highscores extends Activity {
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.highscores);      


    }
}

HighscoreList class

package game.objectsmain;

import android.content.Context;
import android.content.SharedPreferences;

public class HighScoresList { 
private SharedPreferences preferences; 
private String names[]; 
private long score[]; 

    public HighScoresList(Context context) 
    { 
        preferences = context.getSharedPreferences("Highscore", 0); 
        names = new String[5]; 
        score = new long[5]; 

        for (int x=0; x<5; x++) 
        { 
            names[x] = preferences.getString("name"+x, "-"); 
            score[x] = preferences.getLong("score"+x, 0); 
        } 

    } 

    public String getName(int x) 
    { 
        //get the name of the x-th position in the Highscore-List 
        return names[x]; 
    } 

    public long getScore(int x) 
    { 
        //get the score of the x-th position in the Highscore-List 
        return score[x]; 
    } 

    public boolean inHighscore(long score) 
    { 
    //test, if the score is in the Highscore-List 
        int position; 
        for (position=0; position<10 && this.score[position] > score; position++); 

        if (position==5) return false; 
        return true; 
    } 

    public boolean addScore(String name, long score) 
    { 
    //add the score with the name to the Highscore-List 
        int position; 
        for (position=0; position<10 && this.score[position] > score; position++); 

        if (position==5) return false; 

        for (int x=4; x > position; x--) 
        { 
            names[x]=names[x-1]; 
            this.score[x]=this.score[x-1]; 
        } 

        this.names[position] = new String(name); 
        this.score[position] = score; 

        SharedPreferences.Editor editor = preferences.edit(); 
        for (int x=0; x<5; x++) 
        { 
            editor.putString("name"+x, this.names[x]); 
            editor.putLong("score"+x, this.score[x]); 
        } 
        editor.commit(); 
        return true; 

    } 

}

P.S.
btw is it ok to use shared preferences or use sqlite database is much better?

Answer 1

If you want your highscores to be available on the internet, take a look at OpenFeint.

Now, if its just a local table,

There’s nothing wrong with using eithor SharedPreferences or SQLite Database.

I can tell you, using a SQLite Database will be much easier than SharedPreferences.
(Why? Because you wont have to manually sort, validate, check for duplicates in the case of Databases…A Simple Query/Statement can list the top 10, truncate old scores, etc instantly.

To Display your High Score Table, Use a ListActivity and Custom List Adapter to display each Entry. Here‘s a nice relevant tutorial for the same.