Public class MyViewHolder implements View.OnLongClickListener,View. Then we shall have a ViewHolder class for our ListView that shall implement the above interface.We also take note,implement the OnCreateContextMenuListener where we create our menu that shall be our ContextMenu.We add our menu items : package .listviewsqlite.mListView First lets define the signature for our LongClickListner : package .listviewsqlite.mListView Now we shall be displaying the actions to be performed like add,edit,delete data via the ContextMenu.The user longclicks the ListView and we display the ContextMenu. Public class DBHelper extends SQLiteOpenHelper )
Edit sqlite database upgrade#
DBHelper.javaĭBHelper shall create our database table as well as upgrade it.It derives from SQliteOpenHelper class. Static final String DROP_TB="DROP TABLE IF EXISTS "+TB_NAME Īpart from the Constants class,we have two more database classes : DBHelper and DBAdapter. Static final String CREATE_TB="CREATE TABLE hh_TB(id INTEGER PRIMARY KEY AUTOINCREMENT," Those constants include the column names, database name, table name, database version, table creation statement as well as table droppiing/deleting statement. The first thing we want to do is create a roof that will contain the SQlite database constants that we desire to use in our project.This makes it easy to reuse and maintain our database classes. We are using Context Menu,material EditTexts and ListView with cards.Main Features: Load SQLite database files from your device - Use the 'File' menu to open or create a new SQLite database or simply drop a database into this window. You can read one or multiple SQLite databases and run SQLite commands. DELETE/REMOVE data on ContextMenu Item selected. SQLite Manager allows you to edit/view SQLite databases directly in browser.
Edit sqlite database full#
Now today we look at ListView and SQLite database.The two are normally commonly used so we try to leave no stone untouched.Nevertheless we have covered full CRUD operations previously but with RecyclerView.Today we look at with ListView. It can also allow us execute SQL statements directly if so we desire.Ī database has to be unique for each single application, within that application. SQliteDatabase will give use the methods we need to perform our SQLite CRUD operations. Android does ship with SQLite database.Ī class is defined in the package we talked about above.
That package contains classes and apis which we can use when manipulating our database. This implies it has existed since the very inception of android. Together with Realm database,they are two ways that are now common in local data storage.The package we shall be using is. There is the cloud but it isn’t a replacement for local storage.Neither will it be in the near future.Storing data locally is important because its easily retrievable,doesn’t require internet connection and is fast. Nowadays most apps need or require to store content or data in some form.
Edit sqlite database how to#
Example 1: Android SQLite Full – ListView – INSERT,SELECT,UPDATE, DELETE with ContextMenuĪndroid SQLite Full – ListView – INSERT,SELECT,UPDATE, DELETE with ContextMenu Tutorial.īasically we see how to perform all CRUD(Create Read Update Delete) Operations against a SQLite database. In this tutorial we want to learn SQLite usage in depth using easy to understand examples, especially how to perform CRUD operations whileusing Listview.
0 kommentar(er)
