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And initialize them onCreate method : txtData = (TextView) this.findViewById(R.id.txtData) btnFetch = (Button) findViewById(R.id.btnFetch) btnClear = (Button) findViewById(R.id.btnClear) url,user,pass must be valid and correct credentials of your mySql database for a successful Android-MySQL Connection.

Username: The default username for the mysql database is root. We may use any database, in such case, we need to replace the sonoo with our database name. Our app won’t connect directly to the database, instead, it will need to send requests Connection URL: The connection URL for the mysql database is jdbc:mysql://localhost:3306/sonoo where jdbc is the API, mysql is the database, localhost is the server name on which mysql is running, we may also use IP address, 3306 is the port number and sonoo is the database name. We will need a MySQL server of course, but we will also need a simple API. The first step in learning how to connect an Android app to a MySQL database is configuring the backend. How to Connect an Android App to a MySQL Database: Setting up a MySQL Server.

Connection URL: The connection URL for the mysql database is jdbc:mysql://localhost:3306/sonoo where jdbc is the API, mysql is the database, localhost is the server name on which mysql is running, we may also use IP address, 3306 is the port number and sonoo is the database name. Our app won’t connect directly to the database, instead, it will need to send requests. See Adding jars to the classpath for details. Create a lib folder and copy the JDBC driver into this folder. Create a Java project and a package called de.