import android.os.Bundle;
import android.content.res.AssetManager;
import android.widget.TextView;
import androidx.activity.EdgeToEdge;
import androidx.appcompat.app.AppCompatActivity;
import java.io.IOException;
import java.io.InputStream;

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        EdgeToEdge.enable(this);
        setContentView(R.layout.activity_main);

        TextView tV = findViewById(R.id.hello_text);

        AssetManager assetManager = getAssets();

        try {
            String[] files = assetManager.list("");

            for(int i=0; i<files.length; i++)            {
                tV.append("\n " +files[i]);
            }
        } catch (IOException e1) {
            // TODO Auto-generated catch block
            e1.printStackTrace();
        }

        // To load text file
        InputStream input;
        try {
            input = assetManager.open("data.txt");

            int size = input.available();
            byte[] buffer = new byte[size];
            input.read(buffer);
            input.close();

            // byte buffer into a string
            String text = new String(buffer);

            tV.append(text);
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

    }
}