ORKTaskResultSource Protocol Reference

Conforms to NSObject
Declared in ORKResult.h

ORKTaskResultSource is the protocol for [ORKTaskViewController defaultResultSource].

– stepResultForStepIdentifier: required method

Returns a step result for the specified step identifier, if one exists.

- (nullable ORKStepResult *)stepResultForStepIdentifier:(NSString *)stepIdentifier

Parameters

stepIdentifier

The identifier for which to search.

Return Value

The result for the specified step, or nil for none.

Discussion

When it’s about to present a step, the task view controller needs to look up a suitable default answer. The answer can be used to prepopulate a survey with the results obtained on a previous run of the same task, by passing an ORKTaskResult object (which itself implements this protocol).

Declared In

ORKResult.h

– alwaysCheckForDefaultResult

Should the default result store be used even if there is a previous result? (due to reverse navigation or looping)

- (BOOL)alwaysCheckForDefaultResult

Return Value

YES if the default result should be given priority over the previous result.

Discussion

By default, the [ORKTaskViewController defaultResultSource] is only queried for a result if the previous result is nil. This allows the result source to override that default behavior.

Declared In

ORKResult.h