problem in update user data (android,Mysql)

i try to make user update his/her profile, the php code is work will, but the problem when i
try to enter data by android aplication nothing change in database, and nothing wrong appeare in logcat.
what is the problem?





public class MainActivity extends AppCompatActivity {

    EditText et1,et2,et3,et4;
    Button saveupdate;
    String finalUrl;

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

        et1 = (EditText) findViewById(R.id.username);
        et2 = (EditText) findViewById(R.id.userpass);
        et3 = (EditText) findViewById(R.id.useremail);
        et4 = (EditText) findViewById(R.id.useraddress);

        saveupdate = (Button) findViewById(R.id.button2);
        saveupdate.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {

                String username = et1.getText().toString();
                String password = et2.getText().toString();
                String email = et3.getText().toString();
                String address = et4.getText().toString();

                // encoding url to accept all characters
                final String url = "http://192.168.56.1/lesson6hiniwear/updateuser.php";
                final String usernamekey = "?name=";
                final String passwordkey = "&password=";
                final String emailkey = "&email=";
                final String addresskey = "&address=";

                try {
                    finalUrl = url + usernamekey + URLEncoder.encode(username, "UTF-8") + passwordkey + URLEncoder.encode(password, "UTF-8")
                            + emailkey + URLEncoder.encode(email, "UTF-8") + addresskey + URLEncoder.encode(address, "UTF-8");
                } catch (UnsupportedEncodingException e) {
                    e.printStackTrace();
                }

                Runnable runnable = new Runnable() {
                    @Override
                    public void run() {
                        try {
                            URL updateuserUrl = new URL(url);
                            // استقبال الاتصال بداخل الكلاس HttpUrlConnection
                            HttpURLConnection userConnection = (HttpURLConnection) updateuserUrl.openConnection();
                            // convert the bytes Stream comes from URL to character stream
                            InputStreamReader stream = new InputStreamReader(userConnection.getInputStream());
                            // convert character stream to something java can understand it
                            BufferedReader ourStreamReader = new BufferedReader(stream);
                            //extract the text from the stream in String
                            final String Result = ourStreamReader.readLine();
                            runOnUiThread(new Runnable() {
                                @Override
                                public void run() {
                                    Toast.makeText(MainActivity.this,Result,Toast.LENGTH_SHORT).show();
                                }
                            });
                        } catch (IOException e) {
                            e.printStackTrace();
                        }
                    }
                };
                // open new thread
                Thread thread = new Thread(runnable);
                thread.start();
            }
        });


    }
}