Now that the widget extension has been added to the project, the next step is to add some data and data structures that will provide the basis for the widget timeline. Begin by right-clicking on the Shared folder in the project navigator and selecting the New File… menu option.
From the template selection panel, select the Swift File entry, click on the Next button and name the file WeatherData.swift. Before clicking on the Create button, make sure that the WeatherWidgetExtension entry is enabled in the Targets section of the panel as shown in Figure 48-7 so that the file will be accessible to the extension:
As outlined in the previous chapter, each point in the widget timeline is represented by a widget timeline entry instance. Instances of this structure contain the date and time that the entry is to be presented by the widget, together with the data to be displayed. Within the WeatherData.swift file, add a TimelineEntry...
