FileChooser.java

package org.pyload.android.client.module;

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

import android.os.Environment;
import org.pyload.android.client.R;

import android.app.ListActivity;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.TextView;

public class FileChooser extends ListActivity {
	
	public final static int CHOOSE_FILE = 0;
    public final static String SD_CARD = Environment.getExternalStorageDirectory().getPath();

	private File currentDir;
	private FileArrayAdapter adapter;

	
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		currentDir = new File(SD_CARD);
		fill(currentDir);
	}

	private void fill(File f) {
		File[] dirs = f.listFiles();
		this.setTitle(getString(R.string.current_dir) + f.getName());
		List<Option> dir = new ArrayList<Option>();
		List<Option> fls = new ArrayList<Option>();
		try {
			for (File ff : dirs) {
				if (ff.isDirectory())
					dir.add(new Option(ff.getName(), getString(R.string.folder), ff
							.getAbsolutePath()));
				else {
					fls.add(new Option(ff.getName(), getString(R.string.file_size)
							+ Utils.formatSize(ff.length()), ff.getAbsolutePath()));
				}
			}
		} catch (Exception e) {

		}
		Collections.sort(dir);
		Collections.sort(fls);
		dir.addAll(fls);
		if (!f.getName().equalsIgnoreCase("sdcard"))
			dir.add(0, new Option("..", getString(R.string.parent_dir), f.getParent()));
		adapter = new FileArrayAdapter(FileChooser.this, R.layout.file_view,
				dir);
		this.setListAdapter(adapter);
	}

	
	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.getItem(position);
		if (o.getData().equalsIgnoreCase(getString(R.string.folder))
				|| o.getData().equalsIgnoreCase(getString(R.string.parent_dir))) {
			currentDir = new File(o.getPath());
			fill(currentDir);
		} else {
			onFileClick(o);
		}
	}

	private void onFileClick(Option o) {		
		Intent intent = new Intent();
		intent.putExtra("filepath", o.getPath());
		intent.putExtra("filename", o.getName());
		setResult(RESULT_OK, intent);
		finish();
	}
}

class Option implements Comparable<Option> {
	private String name;
	private String data;
	private String path;

	public Option(String n, String d, String p) {
		name = n;
		data = d;
		path = p;
	}

	public String getName() {
		return name;
	}

	public String getData() {
		return data;
	}

	public String getPath() {
		return path;
	}

	
	public int compareTo(Option o) {
		if (this.name != null)
			return this.name.toLowerCase().compareTo(o.getName().toLowerCase());
		else
			throw new IllegalArgumentException();
	}
}

class FileArrayAdapter extends ArrayAdapter<Option> {

	private Context c;
	private int id;
	private List<Option> items;

	public FileArrayAdapter(Context context, int textViewResourceId,
			List<Option> objects) {
		super(context, textViewResourceId, objects);
		c = context;
		id = textViewResourceId;
		items = objects;
	}

	public Option getItem(int i) {
		return items.get(i);
	}

	
	public View getView(int position, View convertView, ViewGroup parent) {
		View v = convertView;
		if (v == null) {
			LayoutInflater vi = (LayoutInflater) c
					.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
			v = vi.inflate(id, null);
		}
		final Option o = items.get(position);
		if (o != null) {
			TextView t1 = (TextView) v.findViewById(R.id.TextView01);
			TextView t2 = (TextView) v.findViewById(R.id.TextView02);

			if (t1 != null)
				t1.setText(o.getName());
			if (t2 != null)
				t2.setText(o.getData());

		}
		return v;
	}

}