It's good to have a lot of objects on screen for an application?
Hello
I need to make a request that has the following requirements:
- The application begins with a screen that should be a list of, say, supermarkets.
- When a user selects a supermarket, the application should display a list of the departments of this supermarket.
- Select a Department from the list should show a list of products in the Department.
- Choose a product should show the details of the product.
- I need to display a bar of tabs at the bottom.
I implemented the tab bar by using this article:
http://supportforums.BlackBerry.com/T5/Java-development/create-tabbed-view-screens/Ta-p/444969
The article mentions:
The basic approach is to use a set of managers to control the sets of fields that appear on the screen when a tab is selected. Tabs are implemented in the form of LabelFields Focus, with a FocusChangeListener make the Manager switch when the focus changes.
So, apparently, I have two choices:
- Whenever a ListField item is selected, I remove this screen ListField handler and add another Manager with the ListField later.
- Whenever a ListField item is selected, I take the element selected as a parameter and push a new screen with the subsequent ListField. In this case, I'll end up having a lot of screens, before a screen by ListField. Perhaps more screens for other features.
Where should I go for, that is the question.
Much obliged.
If you already have the screen tabs I suggest you to use and replace managers.
You can also use a number of screens without problems, but the replacement is usually more elegant
Tags: BlackBerry Developers
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