Android Download Save file from Server

package com.myapp;

import java.io.BufferedInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLConnection;

import android.os.Bundle;
import android.os.StrictMode;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.view.Menu;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;


public class MainActivity extends Activity {

	
    @SuppressLint("NewApi")
	@Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        
        // Permission StrictMode
        if (android.os.Build.VERSION.SDK_INT > 9) {
            StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
            StrictMode.setThreadPolicy(policy);
        }
        
        
        Button btnDownload = (Button) findViewById(R.id.btnDownload);
        btnDownload.setOnClickListener(new View.OnClickListener() {
            public void onClick(View v) {

            		int count;
            		String from = "https://www.thaicreate.com/android/myfile.zip";
            		String path = "/mnt/sdcard/mydata/";
            		
            		try {
						URL url = new URL(from);
						URLConnection conexion = url.openConnection();
						conexion.connect();
						
						int lenghtOfFile = conexion.getContentLength(); // Size of file
						InputStream input = new BufferedInputStream(url.openStream());
						
						String fileName = from.substring(from.lastIndexOf('/')+1, from.length());
						OutputStream output = new FileOutputStream(path+fileName); // save to parh sd card
						
						byte data[] = new byte[1024];
				        while ((count = input.read(data)) != -1) {
				            output.write(data, 0, count);
				        }

				        output.flush();
				        output.close();
				        input.close();
				        
				        Toast.makeText(MainActivity.this,"File has been downloaded. " ,Toast.LENGTH_LONG).show(); 
						
					} catch (MalformedURLException e) {
						// TODO Auto-generated catch block
						e.printStackTrace();
					} catch (IOException e) {
						// TODO Auto-generated catch block
						e.printStackTrace();
					}
            		
            }
        });  
      
    }

	@Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.activity_main, menu);
        return true;
    }
	
}

           		String from = "https://www.thaicreate.com/android/myfile.zip";
            		String path = "/mnt/sdcard/mydata/";

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent" >

    <Button
        android:id="@+id/btnDownload"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:layout_centerHorizontal="true"
        android:layout_marginBottom="192dp"
        android:text="Start Download" />

    <EditText
        android:id="@+id/editText1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_alignParentTop="true"
        android:layout_marginTop="90dp"
        android:ems="10"
        android:gravity="center"
        android:textSize="12dp" />

    <TextView
        android:id="@+id/textView1"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_alignParentTop="true"
        android:layout_marginTop="50dp"
        android:gravity="center"
        android:text="Enter URL for Download" />

</RelativeLayout>