Android Open Source - android-file-chooser Adv File Chooser

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License

The source code is released under:

GNU General Public License

Java Source Code

package br.com.thinkti.android.filechooser;
//from   w ww .j a  va2  s  . co m
import java.io.File;
import java.io.FileFilter;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;

import android.app.Activity;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.os.Bundle;
import android.view.KeyEvent;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ListView;

public class AdvFileChooser extends Activity {
  private File currentDir;
  private FileArrayAdapter adapter;
  private FileFilter fileFilter;
  private File fileSelected;
  private ArrayList<String> extensions;
  private boolean selectFolder = false;

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.list_view);

    Bundle extras = getIntent().getExtras();
    if (extras != null) {
      if (extras.getStringArrayList("filterFileExtension") != null) {
        extensions = extras.getStringArrayList("filterFileExtension");
        fileFilter = new FileFilter() {
          @Override
          public boolean accept(File pathname) {
            return ((pathname.isDirectory()) || (pathname.getName()
                .contains(".") ? extensions.contains(pathname
                .getName().substring(
                    pathname.getName().lastIndexOf(".")))
                : false));
          }
        };
      }
      if (extras.getBoolean("selectFolder")) {
        selectFolder = true;
        fileFilter = new FileFilter() {
          @Override
          public boolean accept(File pathname) {
            return (pathname.isDirectory());
          }
        };
      }

      if (extras.getString("startingDirectory") != null) {
        currentDir = new File(extras.getString("startingDirectory"));
      }
    }

    if (currentDir == null) {
      currentDir = new File("/sdcard/");
    }
    fill(currentDir);
  }

  public boolean onKeyDown(int keyCode, KeyEvent event) {
    if (keyCode == KeyEvent.KEYCODE_BACK) {
      if ((!currentDir.getName().equals("sdcard"))
          && (currentDir.getParentFile() != null)) {
        currentDir = currentDir.getParentFile();
        fill(currentDir);
      } else {
        finish();
      }
      return false;
    }
    return super.onKeyDown(keyCode, event);
  }

  private void fill(File f) {
    File[] dirs = null;
    if (fileFilter != null)
      dirs = f.listFiles(fileFilter);
    else
      dirs = f.listFiles();

    this.setTitle(getString(R.string.currentDir) + ": " + f.getName());
    List<Option> dir = new ArrayList<Option>();
    List<Option> fls = new ArrayList<Option>();
    try {
      for (File ff : dirs) {
        if (ff.isDirectory() && !ff.isHidden())
          dir.add(new Option(ff.getName(),
              getString(R.string.folder), ff.getAbsolutePath(),
              true, false, false));
        else {
          if (!ff.isHidden())
            fls.add(new Option(ff.getName(),
                getString(R.string.fileSize) + ": "
                    + ff.length(), ff.getAbsolutePath(),
                false, false, false));
        }
      }
    } catch (Exception e) {

    }
    Collections.sort(dir);
    Collections.sort(fls);
    dir.addAll(fls);
    if (!f.getName().equalsIgnoreCase("sdcard")) {
      if (f.getParentFile() != null)
        dir.add(0, new Option("..",
            getString(R.string.parentDirectory), f.getParent(),
            false, true, true));
    }

    ListView listView = (ListView) findViewById(R.id.lvFiles);

    adapter = new FileArrayAdapter(listView.getContext(),
        R.layout.file_view, dir);
    listView.setAdapter(adapter);
    listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
      @Override
      public void onItemClick(AdapterView<?> l, View v, int position,
          long id) {
        // TODO Auto-generated method stub
        Option o = adapter.getItem(position);
        if (!o.isBack())
          doSelect(o);
        else {
          currentDir = new File(o.getPath());
          fill(currentDir);
        }
      }

    });
  }

  private void doSelect(final Option o) {
    if (o.isFolder() || o.isParent()) {
      if (!selectFolder) {
        currentDir = new File(o.getPath());
        fill(currentDir);
      } else {
        AlertDialog.Builder builder = new AlertDialog.Builder(this);
        builder.setMessage(getString(R.string.optionSelection))
            .setCancelable(false)
            .setPositiveButton(getString(R.string.openFolder),
                new DialogInterface.OnClickListener() {
                  public void onClick(DialogInterface dialog,
                      int id) {
                    currentDir = new File(o.getPath());
                    fill(currentDir);
                  }
                })
            .setNegativeButton(getString(R.string.selectThis),
                new DialogInterface.OnClickListener() {
                  public void onClick(DialogInterface dialog,
                      int id) {
                    fileSelected = new File(o.getPath());
                    Intent intent = new Intent();
                    intent.putExtra("fileSelected",
                        fileSelected.getAbsolutePath());
                    setResult(Activity.RESULT_OK, intent);
                    finish();
                  }
                });
        AlertDialog alert = builder.create();
        alert.show();
      }
    } else {
      // onFileClick(o);
      fileSelected = new File(o.getPath());
      Intent intent = new Intent();
      intent.putExtra("fileSelected", fileSelected.getAbsolutePath());
      setResult(Activity.RESULT_OK, intent);
      finish();
    }
  }

  @Override
  protected void onDestroy() {
    super.onDestroy();
  }
}

Java Source Code List

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