Human–Computer Interaction

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uI develoPment toolkIt

1. Implementing the event listener itself and associating it with

the View object (which is often part of the Android Activity

object, Figure6.7)

2. Having the View object implement the event listener

(Figure6.8)

3. Having the topmost Activity object (which houses various view

objects as its parts) implement the event listener (Figure6.9).

As already mentioned, the Android UI framework also provides a

declarative method for specifying the UI. at is, the form of the UI

can be “declared” using a markup language (Figure6.10). rough

a development tool such as Eclipse [3], the UI can be built through

direct gr ...