import os
import toga
import toga_android
from toga.style import Pack
from toga.style.pack import COLUMN, LEFT, RIGHT


class FileScannerApp(toga.App):

    def file_picker_handler(self, widget):
        # Open a file picker dialog to choose the directory
        selected_directory = self.main_window.select_folder_dialog('Select a directory')
        if selected_directory:
            # Scan the selected directory and display the list of files
            files = os.listdir(selected_directory)
            self.file_list.data = [(os.path.basename(file),) for file in files]

    def startup(self):
        # Create a main window
        self.main_window = toga.MainWindow(title=self.name)

        # Create a button to open the file picker
        file_picker_button = toga.Button('Pick a Directory', on_press=self.file_picker_handler)

        # Create a data table to display the list of files
        self.file_list = toga.Table(headings=['File Name'], style=Pack(flex=1))

        # Add the button and data table to the main window
        self.main_window.content = toga.Box(children=[file_picker_button, self.file_list], style=Pack(direction=COLUMN))

        # Show the main window
        self.main_window.show()


def main():
    return FileScannerApp('File Scanner', 'org.pyqt.filescanner')


if __name__ == '__main__':
    app = main()
    toga_android.AndroidApp(app)