Android Event Processing (chapter summary)

1, event processing must have an event source, and then depending on the set of event processing classes, the operation is different, each component basically has its own event monitoring operations.


2, click event to trigger when the component is selected.


3, use the drop-down list box to complete the display of the Cascading submenu.


4, keyboard events can listen to the data entered by the user.


5, touch events can listen when the user clicks the screen, using touch events to complete the basic operation of the drawing.