This section describes the processes of a widget from creation to display. For details, see the figure below.
Figure 1 Widget process model
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Widget host process: a host process that displays the widget UI, for example, the home screen process.
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Widget rendering process: a process that loads and renders widget UIs in the system. All widgets are rendered in the same process, and different widget UIs are isolated by VMs.
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Widget Manager process: a System Service (SA) for unifying the widget lifecycle.
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Widget provider process: an application process that provides widgets, including the main process running the UIAbility of the application and the independent FormExtensionAbility process of the widget. The memory of the two processes is isolated, but they share the same file sandbox.