DocumentViewer/src/com/poqop/document/MainBrowserActivity.java

package com.poqop.document;

import android.app.Activity;
import android.content.Intent;
import android.net.Uri;


import java.io.File;
import java.io.FileFilter;
import java.util.HashMap;

import org.vudroid.pdfdroid.PdfViewerActivity;

public class MainBrowserActivity extends BaseBrowserActivity
{
	
    private final static HashMap<String, Class<? extends Activity>> extensionToActivity = new HashMap<String, Class<? extends Activity>>();

    static
    {	
    	//文件类型
        extensionToActivity.put("pdf", PdfViewerActivity.class);
 /*       extensionToActivity.put("djvu", DjvuViewerActivity.class);
        extensionToActivity.put("djv", DjvuViewerActivity.class);*/
    }

    /**
     * FileFilter  :文件类型筛选器
     */
    @Override
    protected FileFilter createFileFilter()
    {
        return new FileFilter()
        {
            public boolean accept(File pathname)
            {
                for (String s : extensionToActivity.keySet())
                {
                    if (pathname.getName().endsWith("." + s)) return true;
                }
                return pathname.isDirectory();
            }
        };
    }

    @Override
    protected void showDocument(Uri uri)
    {
        final Intent intent = new Intent(Intent.ACTION_VIEW, uri);
        String uriString = uri.toString();
        String extension = uriString.substring(uriString.lastIndexOf('.') + 1);
        intent.setClass(this, extensionToActivity.get(extension));
        startActivity(intent);
    }
}