You don’t need to establish any connections like JDBC, ODBC, or any other external connection for it, like what you will need to do in java applications. SQLite is a build-in database implementation that comes with Android. SQLite database supports all the relational database features. SQLite database is an opensource, lightweight, no network access, and standalone SQL database that stores data to a text file on a device. Using android SQLite database I will show you how to perform all the crud operations like Create, Insert, Update, and Delete. : Attempt to invoke virtual method ' .query(,, ,, ,, , )' on a null object referenceĪt .EmployeeOperations.getEmployee(EmployeeOperations.java:63)Īt $6.onClick(MainActivity.java:135)Īt 7.app.AlertController$ButtonHandler.handleMessage(AlertController.java:157)Īt android.os.Handler.dispatchMessage(Handler.java:102)Īt android.os.Looper.loop(Looper.java:135)Īt (ActivityThread.java:5294)Īt .invoke(Native Method)Īt .invoke(Method.java:372)Īt .ZygoteInit$n(ZygoteInit.java:904)Īt .ZygoteInit.main(ZygoteInit.java:699)]Ĭursor cursor = database.query(EmployeeDBHandler.TABLE_EMPLOYEES,allColumns,EmployeeDBHandler.COLUMN_ID + "=?",new String,null,null, null, null) Įmployee e = new Employee(Long.parseLong(cursor.getString(0)),cursor.getString(1),cursor.getString(2),cursor.getString(3),cursor.getString(4),cursor.In this article, you will learn about the Android SQLite Database in-depth with a good example. ![]() Where I missed a step? Any help is appreciated.Ġ6-11 14:58:37.786 7537-7537/ E/AndroidRuntime: FATAL EXCEPTION: main It looks like it's saying that's having an null object passed to it, but I'm not sure. I'm new to Android, and i've got some issues.
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