Download Android User Interface Development: Beginner's Guide by Jason Morris PDF

By Jason Morris

This can be a step by step consultant that goals to offer even a beginner Android developer a great grab of user-interface layout, whereas operating via examples, diagrams, and screenshots to show off a number of the widgets and instruments that the platform makes to be had.

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Since a ListView with CHOICE_MODE_NONE is a lot like a menu, wouldn't it be nice to change the items into Button objects instead of normal TextView items? Technically, a ListView can contain any widget that extends TextView. However, some implementations are more suitable than others (for example, a ToggleButtonView won't maintain the specified text-value when the user touches it). Defining standard dimensions In this example we'll be creating various menus for the application. In order to maintain a consistent look and feel, we should define a set of standard dimensions which will be used in each of our layout files.

We will display the number of burgers they are ordering in bold to the left of the burger's name. Next to burgers that they aren't ordering, there should be no number (this allows the user to see what they are ordering at a quick glance). The Burger class In order to display the menu, we need a simple Burger data object. The Burger class will hold a name to be displayed in the menu, and the number of Burger the user is ordering. name = name; } } You'll notice that there are no getters and setters in the preceding code, and that both the name and count fields are declared as package-protected.

TheBurgerPlaceActivity"/> To start the Activity, you'll need to go back to SelectRestaurantActivity and implement the OnItemClickListener interface. After setting the Adapter on the restaurants ListView, set SelectRestaurantActivity as the OnItemClickListener of the restaurants ListView. You can start TheBurgerPlaceActivity using an Intent object in the onItemClick method. main); [ 54 ] Chapter 2 Creating ExpandableListAdapter implementations Since the ExpandableList class includes two levels of detail, it can't work against a normal ListAdapter which only handles a single level.

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