FileOpener.java

/*
 * PhoneGap is available under *either* the terms of the modified BSD license *or* the
 * MIT License (2008). See http://opensource.org/licenses/alphabetical for full text.
 *
 * Copyright (c) 2005-2010, Nitobi Software Inc.
 * Copyright (c) 2011, IBM Corporation
 */

package com.phonegap.plugins.fileopener;

import java.io.IOException;
import java.net.URLConnection;

import org.apache.cordova.api.CallbackContext;
import org.json.JSONArray;
import org.json.JSONException;

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

import org.apache.cordova.api.CordovaPlugin;

public class FileOpener extends CordovaPlugin {

    @Override
    public boolean execute(String action, JSONArray args, CallbackContext callbackContext) throws JSONException {

        try {
            if (action.equals("openFile")) {
               if( openFile(args.getString(0)) ) {
                   callbackContext.success();
               }
               else {
                   callbackContext.error("Could not open file");
               }
                return true;
            }
        } catch (IOException e) {
            e.printStackTrace();
            callbackContext.error(e.getMessage());
        } catch (RuntimeException e) {  // KLUDGE for Activity Not Found
            e.printStackTrace();
            callbackContext.error(e.getMessage());
        }
        return false;
    }

    private boolean openFile(String url) throws IOException {
        // Create URI
        Uri uri = Uri.parse(url);

        Intent intent;
        // Check what kind of file you are trying to open, by comparing the url with extensions.
        // When the if condition is matched, plugin sets the correct intent (mime) type, 
        // so Android knew what application to use to open the file

        if (url.contains(".doc") || url.contains(".docx")) {
            // Word document
            intent = new Intent(Intent.ACTION_VIEW);
            intent.setDataAndType(uri, "application/msword");
        } else if(url.contains(".pdf")) {
            // PDF file
            intent = new Intent(Intent.ACTION_VIEW);
            intent.setDataAndType(uri, "application/pdf");
        } else if(url.contains(".ppt") || url.contains(".pptx")) {
            // Powerpoint file
            intent = new Intent(Intent.ACTION_VIEW);
            intent.setDataAndType(uri, "application/vnd.ms-powerpoint");
        } else if(url.contains(".xls") || url.contains(".xlsx")) {
            // Excel file
            intent = new Intent(Intent.ACTION_VIEW);
            intent.setDataAndType(uri, "application/vnd.ms-excel");
        } else if(url.contains(".rtf")) {
            // RTF file
            intent = new Intent(Intent.ACTION_VIEW);
            intent.setDataAndType(uri, "application/rtf");
        } else if(url.contains(".wav")) {
            // WAV audio file
            intent = new Intent(Intent.ACTION_VIEW);
            intent.setDataAndType(uri, "audio/x-wav");
        } else if(url.contains(".gif")) {
            // GIF file
            intent = new Intent(Intent.ACTION_VIEW);
            intent.setDataAndType(uri, "image/gif");
        } else if(url.contains(".jpg") || url.contains(".jpeg")) {
            // JPG file
            intent = new Intent(Intent.ACTION_VIEW);
            intent.setDataAndType(uri, "image/jpeg");
        } else if(url.contains(".txt")) {
            // Text file
            intent = new Intent(Intent.ACTION_VIEW);
            intent.setDataAndType(uri, "text/plain");
        } else if(url.contains(".mpg") || url.contains(".mpeg") || url.contains(".mpe") || url.contains(".mp4") || url.contains(".avi")) {
            // Video files
            intent = new Intent(Intent.ACTION_VIEW);
            intent.setDataAndType(uri, "video/*");
        }
                
        //if you want you can also define the intent type for any other file
        
        //additionally use else clause below, to manage other unknown extensions
        //in this case, Android will show all applications installed on the device
        //so you can choose which application to use
        
        // else {
        //     intent = new Intent(Intent.ACTION_VIEW);
        //     intent.setDataAndType(uri, "*/*");
        // }

        else {
            String mimeType = URLConnection.guessContentTypeFromName(url);
            intent = new Intent(Intent.ACTION_VIEW);
            intent.setDataAndType(uri, mimeType);
        }

        try
        {
              this.cordova.getActivity().startActivity(intent);
              return true;
        }
        catch (Exception e)
        {
            return false;
        }
    }

}