Android Open Source - filemanager Copy Task

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License

The source code is released under:

MIT License

Java Source Code

/**
 * The MIT License (MIT)//ww w.java 2 s.co m
 *
 * Copyright 2014 Binkery Huang <binkery@gmail.com>
 *
 * Oct 23, 2014
 */
package com.binkery.app.filemanager.fragments;

import java.io.File;

import android.app.ProgressDialog;
import android.os.AsyncTask;

import com.binkery.app.filemanager.R;
import com.binkery.app.filemanager.utils.Logs;

public class CopyTask extends AsyncTask<File, String, Integer> {
  
  private static final String TAG = CopyTask.class.getSimpleName();
  private ProgressDialog dialog = null;
  private FileListFragment mFragment = null;
  public static final int OK = 0;
  public static final int FAILED_FILE_NO_EXIST = -1;
  public static final int FAILED_NO_SPACE = -2;

  public CopyTask(FileListFragment fragment) {
    mFragment = fragment;
    dialog = new ProgressDialog(fragment.getActivity());
  }

  @Override
  protected void onPreExecute() {
    super.onPreExecute();
    dialog.setMessage(mFragment.getString(R.string.copy));
    dialog.setCancelable(false);
    dialog.show();
  }

  @Override
  protected Integer doInBackground(File... params) {
    File from = params[0];
    File curFolder = params[1];
    long time = System.currentTimeMillis();
    //TODO
    if(from == null || !from.exists()){
      return FAILED_FILE_NO_EXIST;
    }
    Logs.i(TAG, "from " + from.getAbsolutePath() + ", to " + curFolder.getAbsolutePath());
    long filesize = com.binkery.app.filemanager.utils.FileUtils.getFileSize(from);
    Logs.i(TAG, "file size = " + filesize);
    long freeSpace = com.binkery.app.filemanager.utils.FileUtils.getFreeSpace(curFolder);
    Logs.i(TAG, "free space = " + freeSpace);
    
    if(filesize > freeSpace){
      return FAILED_NO_SPACE;
    }
    
    File targetFile = getNewFileName(curFolder,from.getName(),0);
    Logs.i(TAG, "new file name = " + targetFile);
    
    copyFileStream(from, targetFile);
    Logs.i(TAG, "using " + (System.currentTimeMillis() - time));
    return OK;
  }
  
  private File getNewFileName(File folder, String name, int index) {
    String path = null;
    if (index == 0) {
      path = folder.getAbsoluteFile() + File.separator + name;
    } else {
      int point = name.lastIndexOf(".");
      if (point == -1 || point == 0) {
        path = folder.getAbsoluteFile() + File.separator + name + "-"
            + index;
      }else {
        String pre = name.substring(0, point);
        String suf = name.substring(point, name.length());
        path = folder.getAbsolutePath() + File.separator + pre + "-"
            + index + suf;
      }
    }
    File file = new File(path);
    if (!file.exists()) {
      return file;
    }
    return getNewFileName(folder, name, index + 1);
  }

  @Override
  protected void onPostExecute(Integer result) {
    super.onPostExecute(result);
    dialog.dismiss();
    mFragment.onCopyCompleted(result);
  }
  
  private long copyFileStream(File from, File to) {
    long count = 0;
    if (from.isFile()) {
      return com.binkery.app.filemanager.utils.FileUtils.copy(from, to);
    } else if (from.isDirectory()) {
      if (to.exists()) {
        return -1;
      }
      if (!to.mkdir()) {
        return -1;
      }
      File[] files = from.listFiles();
      if (files == null || files.length == 0) {
        return 0;
      }

      for (File file : files) {
        String path = to.getAbsoluteFile() + File.separator
            + file.getName();
        File target = new File(path);
        long result = copyFileStream(file, target);
        if (result == -1) {
          return -1;
        }
        count += result;
      }
    }
    return count;
  }

}

Java Source Code List

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