Section 1.1: Utilizing Action Items

The ActionItem component is essential for integrating action buttons into the ActionBar. For instance, you can implement it as follows:

The initial ActionItem features an icon showcased on the bar. You can display this icon using the android.systemIcon property. The android.position property determines where the icon appears.

The second ActionItem includes a text property for the menu item label. By setting the android.position to 'popup', we can present the 'delete' option within a popup menu in the upper right corner. The tap event listeners activate when the buttons are pressed.

Section 1.2: Implementing Navigation Buttons

The NavigationButton component enables the addition of navigation buttons to your application. Here's how you can do this:

We include the NavigationButton within our ActionBar. You can specify the text for the navigation button, which will be displayed next to the icon. The android.systemIcon sets the corresponding icon. The tap event listener on the NavigationItem triggers the goBack method when the navigation button is tapped.

Section 1.3: Displaying Activity Indicators

The ActivityIndicator component is useful for showing progress indicators to users. For instance:

You can add the ActivityIndicator to your application. The busy property determines when the activity indicator becomes visible. It will appear when set to true. Additionally, we can listen to the busyChange event via the onBusyChanged method, which activates whenever the busy state changes.

Section 1.4: Creating Buttons

The Button component allows you to incorporate a button into your interface. This can be done with the following code:

We integrate the Button component and use the text property to define the button's label. The tap event is handled through the onButtonTap method. You can also style your button using the Span component. For example:

By nesting the Span inside the Button, the text property can define the button's label, while the fontWeight property adjusts the font's weight. The style property manages the overall text style.