Question

This is my first encounter with SQLite Database and I tried out this codes from http://www.androidhive.info/2011/11/android-sqlite-database-tutorial/

I have this in my Database Handler

// Deleting single contact
public void deleteContact(Contact contact) {
SQLiteDatabase db = this.getWritableDatabase();
db.delete(TABLE_CONTACTS, KEY_ID + " = ?",
        new String[] { String.valueOf(contact.getID()) });
db.close();}

I wish to delete the data from another class (eg: when I click on a button in another java class, it will delete the data from the database.) How do I do that?

Answer 1

I managed to solve it by placing this in Database Handler

public void delete()
{   SQLiteDatabase db = this.getWritableDatabase();
    db.delete(DATABASE_NAME, null, null);
}

and then call this in my ResetActivity class (a different class)

public void reset()
{
DBHandler database = new DBHandler(this);

try {
    database.delete();

} catch (NullPointerException e) {
    // TODO Auto-generated catch block
    Log.d("DATABASE", "ERROR!");
    e.printStackTrace();
}
}