AboutDialog.java

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package com.introlab.rtabmap;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import android.app.Dialog;
import android.content.Context;
import android.graphics.Color;
import android.os.Bundle;
import android.text.Html;
import android.text.util.Linkify;
import android.widget.TextView;

public class AboutDialog extends Dialog{

        private static Context mContext = null;
        
        public AboutDialog(Context context) {
                super(context);
                mContext = context;
        }
        
        @Override
        public void onCreate(Bundle savedInstanceState) {
                setContentView(R.layout.about);
                TextView tv = (TextView)findViewById(R.id.info_text);
                tv.setText(Html.fromHtml(readRawTextFile(R.raw.info)));
                tv.setLinkTextColor(Color.WHITE);
                Linkify.addLinks(tv, Linkify.ALL);
        }
        
        public static String readRawTextFile(int id) {
                InputStream inputStream = mContext.getResources().openRawResource(id);
        InputStreamReader in = new InputStreamReader(inputStream);
        BufferedReader buf = new BufferedReader(in);
        String line;
        StringBuilder text = new StringBuilder();
        try {
                while (( line = buf.readLine()) != null) text.append(line);
         } catch (IOException e) {
            return null;
         }
         return text.toString();
     }

}