[SOLVED] Connection of Android Studio project to MySQL database

Issue

I am developing an android studio project and would like to be able to access data from a database sitting on the pc which I am programming from. I would like to use a MySQL database as I have worked with them before. I was wondering if it is possible to do it from android studio. If it is possible what would the code be for me to do it? I have looked through other people’s questions and answers and all of them yield errors for me.
Thanks in advance

I have tried the following and all my ip, port, username and password information is correct but I keep getting the following error: E/Error in connection: com.mysql.jdbc.Driver
My code in my connection class after declaring my attributes is as follows


        //declaring connection policy
        StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitNetwork().build();
        StrictMode.setThreadPolicy(policy);
        Connection connection = null;
        String ConnectionURL = null;

        //starts actual connection to db
        try
        {
            //establishing connection to Database
            //all hard coded
            Class.forName("com.mysql.jdbc.Driver");
            ConnectionURL= "jdbc:jtds:sqlserver://"+ ip + ":"+ port+";"+ "databasename="+ database+";user="+uname+";password="+pass+";";
            connection = DriverManager.getConnection(ConnectionURL);
        }
        //Catches any error in the data
        catch (Exception e)
        {
            //executes if there is a error connecting to the database
            Log.e("Error in connection", e.getMessage());
            System.out.println("Error connecting to db");
        }
        //returns the connection to the main class
        //it will then be sent to the DBmanager class and used to get the data out of the database
        return connection;
    }
}

Solution

a direct connection of apps to a mysql server(and for other rdms also) is discouraged, as you need for this to open your database to the internet with a direct access, which is a fatal security risk.

search for

  • REST API MySQL android

and you will find a lot of tutorials

like this short one https://phppot.com/php/php-mysql-rest-api-for-android/ or this https://www.javahelps.com/2018/12/access-mysql-from-android-through.html

Answered By – nbk

Answer Checked By – Mildred Charles (BugsFixing Admin)

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