Fügen Sie Daten zu mysql mit Android Studio

Will ich Daten von einem Benutzer und legen Sie es auf MySql Datenbank,,,das ist mein code,,,was ist mein problem?
meine app ausgeführt wurde....aber nachdem ich den Eintrag meine Daten und klicken Sie auf die Schaltfläche "einfügen", wird nichts eingefügt, um meine db....bitte helfen Sie mir

init.php

<?php

$db_name="project";
$mysql_user="root";
$server_name="localhost";
$connection=mysqli_connect($server_name,$mysql_user,"",$db_name);

if(!$connection)
{
    echo("Connection not successful");
}
else
echo("Connection Successful");


?>

register.php

<?php
require "init.php";
$u_name=$_POST["name"];
$u_password=$_POST["password"];
$u_contact=$_POST["contact"];
$u_country=$_POST["country"];

$sql_query="insert into users (name,password,contact,country) values('$u_name','$u_password','$u_contact','$u_country');";

if(mysqli_query($connection,$sql_query))
{
  // echo("data inserted");
}
else
{
  // echo("error");
}


?>

MainActivity.java

public class MainActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
}

public void goToRegister(View view)
{
    Intent intent=new Intent(this,Register.class);
    startActivity(intent);

}
}

BackgroundTask.java

public class BackgroundTask extends AsyncTask<String,Void,String> {

Context ctx;
    BackgroundTask(Context ctx)
    {
        this.ctx=ctx;
    }


protected String doInBackground(String... params) {

    String reg_url="http://127.0.0.1/prj/register.php";
    String method=params[0];
    if(method.equals("register"))
    {
        String name=params[1];
        String password=params[2];
        String contact=params[3];
        String country=params[4];
        try {
            URL url=new URL(reg_url);
            HttpURLConnection httpURLConnection=(HttpURLConnection) url.openConnection();
            httpURLConnection.setRequestMethod("POST");
            httpURLConnection.setDoOutput(true);
            OutputStream os=httpURLConnection.getOutputStream();

            BufferedWriter bufferedWriter=new BufferedWriter(new OutputStreamWriter(os,"UTF-8"));

            String data= URLEncoder.encode("name","UTF-8")+"="+URLEncoder.encode(name,"UTF-8")+"&"+
                    URLEncoder.encode("password","UTF-8")+"="+URLEncoder.encode(password,"UTF-8")+"&"+
                    URLEncoder.encode("contact","UTF-8")+"="+URLEncoder.encode(contact,"UTF-8")+"&"+
                    URLEncoder.encode("country","UTF-8")+"="+URLEncoder.encode(country,"UTF-8");
            bufferedWriter.write(data);
            bufferedWriter.flush();
            bufferedWriter.close();
            os.close();
            InputStream IS=httpURLConnection.getInputStream();
            IS.close();
            return "Registration Successful";


        } catch (MalformedURLException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
    return null;
}

@Override
protected void onPreExecute() {
    super.onPreExecute();
}

@Override
protected void onPostExecute(String result) {
    Toast.makeText(ctx,result,Toast.LENGTH_LONG).show();
}

@Override
protected void onProgressUpdate(Void... values) {
    super.onProgressUpdate(values);
}
}

Register.java

public class Register extends AppCompatActivity {
EditText eName,ePassword,eContact,eCountry;
String name,password,contact,country;

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

    //Declare Edit Text and Casting

    eName= (EditText) findViewById(R.id.EDName);
    ePassword= (EditText) findViewById(R.id.EDPassword);
    eContact= (EditText) findViewById(R.id.EDContact);
    eCountry= (EditText) findViewById(R.id.EDCountry);

}

public void regUser(View view)
{
    name=eName.getText().toString();
    password=ePassword.getText().toString();
    contact=eContact.getText().toString();
    country=eCountry.getText().toString();
    String method="register";
    BackgroundTask backgroundTask=new BackgroundTask(this);
    backgroundTask.execute(method,name,password,contact,country);
    finish();
}
}

InformationsquelleAutor Ali Saravani | 2016-08-29