com.tiltandco.copyfromassets.CopyFromAssets.java Source code

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Here is the source code for com.tiltandco.copyfromassets.CopyFromAssets.java

Source

/**
 * Asset2SD Phonegap Android Plugin for copying files from Assets to SD Card
 * https://github.com/gkcgautam/Asset2SD
 *
 * Available under MIT License (2008).
 *
 * Copyright (c) Gautam Chaudhary 2014
 * http://www.gautamchaudhary.com
 */

package com.tiltandco.copyfromassets;

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;

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

import org.apache.cordova.CordovaPlugin;
import org.apache.cordova.PluginResult;

import android.content.ActivityNotFoundException;
import android.content.Intent;
import android.content.res.AssetManager;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.util.Log;
import android.webkit.DownloadListener;

public class CopyFromAssets extends CordovaPlugin {
    private static final String TAG = CopyFromAssets.class.getSimpleName();

    private CallbackContext callbackContext = null;

    @Override
    public boolean execute(String action, JSONArray args, CallbackContext callbackContext) {
        this.callbackContext = callbackContext;
        // copyFile action
        if (action.equals("copyFile")) {
            try {
                JSONObject obj = args.getJSONObject(0);
                String copyFileName = obj.getString("copyFileName");
                String saveAsFileName = obj.getString("saveAsFileName");
                this.copyFile(copyFileName, saveAsFileName);
                callbackContext.sendPluginResult(new PluginResult(PluginResult.Status.OK));
                return true;
            } catch (Exception e) {
                e.printStackTrace();
                Log.i("Error", "!!! Error occurred while copying file");
                callbackContext.sendPluginResult(new PluginResult(PluginResult.Status.ERROR));
                return false;
            }
        }
        callbackContext.sendPluginResult(new PluginResult(PluginResult.Status.INVALID_ACTION));
        return false;

    }

    public String copyFile(String copyFileName, String saveAsFileName) throws IOException {

        File externalPath = Environment.getExternalStorageDirectory();
        String appName = this.cordova.getActivity().getApplicationContext().getPackageName();
        File destination_file = new File(
                externalPath + addLeadingSlash("/Android/data/" + appName + '/' + saveAsFileName));
        File destination_dir = destination_file.getParentFile();
        String destination_file_path = destination_file.getPath();
        String destination_file_name = destination_file.getName();

        if (destination_file_name.length() <= 0) {
            throw new IOException("Destination file name is missing");
        }

        createDir(destination_dir);
        copyAssetFile(copyFileName, destination_file_path);

        return destination_file_path;
    }

    /**
      * Copies asset file bytes to destination path
      */
    public void copyAssetFile(String copyFileName, String destinationFilePath) throws IOException {
        InputStream in = this.cordova.getActivity().getApplicationContext().getAssets().open(copyFileName);
        OutputStream out = new FileOutputStream(destinationFilePath);
        // Transfer bytes from in to out
        byte[] buf = new byte[1024];
        int len;
        while ((len = in.read(buf)) > 0)
            out.write(buf, 0, len);
        in.close();
        out.close();
    }

    /**
      * Create a directory for the provided File object
      */
    public void createDir(File dir) throws IOException {
        if (dir.exists()) {
            if (!dir.isDirectory()) {
                throw new IOException("Can't create directory, a file is in the way");
            }
        } else {
            dir.mkdirs();
            if (!dir.isDirectory()) {
                throw new IOException("Unable to create directory");
            }
        }
    }

    // Adds a leading slash to path if it doesn't exist
    public String addLeadingSlash(String path) {
        if (path.charAt(0) != '/') {
            path = "/" + path;
        }
        return path;
    }

}