Android Open Source - texthem File Chooser

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License

The source code is released under:
GNU General Public License
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Java Source Code

package filechooser;
//w w w.j  av  a2  s. c  o  m
import android.app.Activity;
import android.app.ListActivity;
import android.content.Intent;
import android.os.Bundle;
import android.view.KeyEvent;
import android.view.View;
import android.widget.ListView;

import java.io.File;
import java.io.FileFilter;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;

import a2.marketingsms.R;

public class FileChooser extends ListActivity {
    private File currentDir;
    private FileArrayAdapter adapter;
    private FileFilter fileFilter;
    private File fileSelected;
    private ArrayList<String> extensions;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        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));
                    }
                };
            }
        }

        currentDir = new File("/"); //NOTE: change sdcard, default root
        //currentDir = new File("/sdcard/");
        fill(currentDir);
    }

    public boolean onKeyDown(int keyCode, KeyEvent event) {
        if (keyCode == KeyEvent.KEYCODE_BACK) {
            if ((/* NOTE: always can do back*/ true || (!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();

        String currentName = (f.getName().length()>0) ? f.getName() : "/";
        this.setTitle(getString(R.string.currentDir) + ": " + currentName);
        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));
                else {
                    if (!ff.isHidden())
                        fls.add(new Option(ff.getName(), getString(R.string.fileSize) + ": "
                                + ff.length(), ff.getAbsolutePath(), false, false));
                }
            }
        } catch (Exception e) {

        }
        Collections.sort(dir);
        Collections.sort(fls);
        dir.addAll(fls);
        if (/* NOTE: always can do back*/ true || !f.getName().equalsIgnoreCase("sdcard")) {
            if (f.getParentFile() != null)
                dir.add(0, new Option(getString(R.string.currentDir)+": "+f.getName(),getString(R.string.parentDirectory), f.getParent(), false, true));
        }
        adapter = new FileArrayAdapter(FileChooser.this, R.layout.file_view,
                dir);
        this.setListAdapter(adapter);
    }

    @Override
    protected void onListItemClick(ListView l, View v, int position, long id) {
        // TODO Auto-generated method stub
        super.onListItemClick(l, v, position, id);
        Option o = adapter.getOption(position);
        if (o.isFolder() || o.isParent()) {
            currentDir = new File(o.getPath());
            fill(currentDir);
        } else {
            //onFileClick(o);
            fileSelected = new File(o.getPath());
            Intent intent = new Intent();
            intent.putExtra("fileSelected", fileSelected.getAbsolutePath());
            setResult(Activity.RESULT_OK, intent);
            finish();
        }
    }
}
Java Source Code List
