SurveySamplingPackage

The sampling package for surveys and cognitive tests filled in by the user.

Surveys are built with the research_package and added to a protocol as an RPAppTask. Register the package before you deploy such a protocol:

SamplingPackageRegistry().register(SurveySamplingPackage());

Key points:

• The SurveyUserTask collects the data, not a probe. SurveyProbe is a no-op placeholder for the SURVEY measure.
• On registration, initializes Research Package and Cognition Package and registers SurveyUserTaskFactory with the AppTaskController.
• Registers RPAppTask and RPTaskResultData for JSON deserialization.

Inheritance

• Object
• SamplingPackage
• SmartphoneSamplingPackage
• SurveySamplingPackage

Constructors

SurveySamplingPackage

SurveySamplingPackage()

Constants

SURVEY

String const SURVEY

Measure type for the result of a survey (RPTaskResultData).

• One-time measure.
• Uses the Smartphone primary device.
• Added automatically to the measures of every RPAppTask.

Properties

samplingSchemes

1. @override

DataTypeSamplingSchemeMap get samplingSchemes

override

The default sampling schemes for all dataTypes in this package.

All sampling packages should defined a DataTypeSamplingScheme for each data type.

Methods

create

1. @override

Probe? create(

1. String type

)

override

Creates a new Probe of the specified type. Note that type should be one of the dataTypes that this package supports. Returns null if a probe cannot be created for the type.

onRegister

1. @override

void onRegister()

override

Callback method when this package is being registered.