The official description of some key classes of sqlite operations and the Startactivityforresult method of intent

Intent:

This function can be used to pass the signal to the principle page through intent to jump the interface, in order to make some processing:

Use of SQLite:

The method gets sqlitedatabase readable and writable, while Getreadabledatabase is read-only:

Inherit Sqliteopenhelper one of the methods that must be implemented: Sqliteopenhelper is an abstract class, and abstract methods of abstract classes must implement or continue to create abstract methods that inherit the abstract class for an abstract class without implementing a specific parent class, and the interface defaults to abstract classes and abstract methods .

Baseadapter Instructions for use:

So the general operation is written in GetView:

Arrayadapter:

The official description of some key classes of sqlite operations and the Startactivityforresult method of intent