--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/net/bgreco/DirectoryPicker.java	Sat Jun 04 18:03:37 2011 -0400
@@ -0,0 +1,126 @@
+package net.bgreco;
+
+import java.io.File;
+import java.util.ArrayList;
+import java.util.Collections;
+
+import android.app.ListActivity;
+import android.content.Context;
+import android.content.Intent;
+import android.os.Bundle;
+import android.os.Environment;
+import android.view.View;
+import android.widget.AdapterView;
+import android.widget.AdapterView.OnItemClickListener;
+import android.widget.ArrayAdapter;
+import android.widget.Button;
+import android.widget.ListView;
+import android.widget.Toast;
+
+public class DirectoryPicker extends ListActivity {
+
+	public static final String START_DIR = "startDir";
+	public static final String ONLY_DIRS = "onlyDirs";
+	public static final String SHOW_HIDDEN = "showHidden";
+	public static final String CHOSEN_DIRECTORY = "chosenDir";
+	public static final int PICK_DIRECTORY = 43522432;
+	private File dir;
+	
+	@Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        Bundle extras = getIntent().getExtras();
+        dir = Environment.getExternalStorageDirectory();
+        String preferredStartDir = extras.getString(START_DIR);
+        final boolean showHidden = extras.getBoolean(SHOW_HIDDEN, false);
+        final boolean onlyDirs = extras.getBoolean(ONLY_DIRS, true);
+        if(preferredStartDir != null) {
+        	File startDir = new File(preferredStartDir);
+        	if(startDir.isDirectory()) {
+        		dir = startDir;
+        	}
+        }
+        
+        setContentView(R.layout.chooser_list);
+        setTitle(dir.getAbsolutePath());
+        Button btnChoose = (Button) findViewById(R.id.btnChoose);
+        String name = dir.getName();
+        if(name.length() == 0)
+        	name = "/";
+        btnChoose.setText("Choose " + "'" + name + "'");
+        btnChoose.setOnClickListener(new View.OnClickListener() {
+            public void onClick(View v) {
+            	returnDir(dir.getAbsolutePath());
+            }
+        });
+        
+        ListView lv = getListView();
+        lv.setTextFilterEnabled(true);
+        
+        if(!dir.canRead()) {
+        	Context context = getApplicationContext();
+        	String msg = "Could not read folder contents.";
+        	Toast toast = Toast.makeText(context, msg, Toast.LENGTH_LONG);
+        	toast.show();
+        	return;
+        }
+        
+        final ArrayList<File> files = filter(dir.listFiles(), onlyDirs, showHidden);
+        String[] names = names(files);
+        setListAdapter(new ArrayAdapter<String>(this, R.layout.list_item, names));        	
+        
+
+        lv.setOnItemClickListener(new OnItemClickListener() {
+        	public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
+        		if(!files.get(position).isDirectory())
+        			return;
+        		String path = files.get(position).getAbsolutePath();
+                Intent intent = new Intent(DirectoryPicker.this, DirectoryPicker.class);
+                intent.putExtra(DirectoryPicker.START_DIR, path);
+                intent.putExtra(DirectoryPicker.SHOW_HIDDEN, showHidden);
+                intent.putExtra(DirectoryPicker.ONLY_DIRS, onlyDirs);
+                startActivityForResult(intent, PICK_DIRECTORY);
+        	}
+        });
+    }
+	
+    @Override
+    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
+    	if(requestCode == PICK_DIRECTORY && resultCode == RESULT_OK) {
+	    	Bundle extras = data.getExtras();
+	    	String path = (String) extras.get(DirectoryPicker.CHOSEN_DIRECTORY);
+	        returnDir(path);
+    	}
+    }
+	
+    private void returnDir(String path) {
+    	Intent result = new Intent();
+    	result.putExtra(CHOSEN_DIRECTORY, path);
+        setResult(RESULT_OK, result);
+    	finish();    	
+    }
+
+	public ArrayList<File> filter(File[] file_list, boolean onlyDirs, boolean showHidden) {
+		ArrayList<File> files = new ArrayList<File>();
+		for(File file: file_list) {
+			if(onlyDirs && !file.isDirectory())
+				continue;
+			if(!showHidden && file.isHidden())
+				continue;
+			files.add(file);
+		}
+		Collections.sort(files);
+		return files;
+	}
+	
+	public String[] names(ArrayList<File> files) {
+		String[] names = new String[files.size()];
+		int i = 0;
+		for(File file: files) {
+			names[i] = file.getName();
+			i++;
+		}
+		return names;
+	}
+}
+