如何使用Java显示来自sql server的数据[android studio]

Question

I wish to display some data from my SQL server into my application.

Let me explain throw an example what have i done until now, and please tell me how should i go on with my work:

(1) I have a database named: 'DB1' (2) In my database i have table named 'users':

Id, Name, LastName
1   Dave  Stone
2   Rose  Mary
3   Gray  Lone

(3) I created 3 php files: 1/ config.php (sets up my database log in information like password...) 2/ DBConnection.php : `

// Connecting to database
public function connect() {
    require_once 'Config.php';

    // Connecting to mysql database
    $this->conn = new mysqli(DB_HOST, DB_USER, DB_PASSWORD, DB_DATABASE);

    // return database handler
    return $this->conn;
}
}

?>

3/ GetUsers.php which i dont know how should i write it - this would be the code which will echo whatever i want from the table.

(4) Inside my android studio project i have a MainActivity.java and i want to get all the LastNames of all the users in the database and do whatever with them... like print them into a text box it doesn't really matter (let's say i don't know how many users I have).

I need some one to help me get stages (3)3/ + (4) done / explained.

Answer 1

I think what you mean is a good method to retrieve and set values from app to database, the best and most prominent way is using basic REST services that convert your db values to JSON then you load the json using your api key as authentication, it might sound really stressful but is in fact very easy and flexible to implement, the only way you can directly set and get db values on android is using sqlite (android local inbuilt db)

The best tutorial and major explanation for exactly what you want to achieve is here

http://www.androidhive.info/2014/01/how-to-create-rest-api-for-android-app-using-php-slim-and-mysql-day-12-2/

Then this one for further works http://www.androidhive.info/2012/01/android-login-and-registration-with-php-mysql-and-sqlite/

It covers how you make a rest service yourself