Instance Method

valueOfAttribute:forResultAtIndex:

Returns the value for the attribute name attrName at the index in the results specified by idx.

Declaration

- (id)valueOfAttribute:(NSString *)attrName forResultAtIndex:(NSUInteger)idx;

Parameters

attributeName

The attribute of the result object at index being inquired about. The attribute must be specified in valueListAttributes, as a sorting key in a specified sort descriptor, or as one of the grouping attributes specified set for the query.

index

The index of the desired return object in the query results array.

Return Value

Value for attributeName in the result object at index in the query result array.

See Also

Getting Query Results

results

An array containing the query’s results.

resultCount

The number of results returned by the query. (read-only)

- resultAtIndex:

Returns the query result at a specific index.

- indexOfResult:

Returns the index of a query result object in the receiver’s results array.

groupedResults

An array containing hierarchical groups of query results. (read-only)

NSMetadataQueryResultGroup

The NSMetadataQueryResultGroup class represents a collection of grouped attribute results returned by an NSMetadataQuery object.

- enumerateResultsUsingBlock:

Enumerates the current set of results using the given block.

- enumerateResultsWithOptions:usingBlock:

Enumerates the current set of results using the given options and block.

valueLists

A dictionary containing the value lists generated by the query.

NSMetadataQueryAttributeValueTuple

The NSMetadataQueryAttributeValueTuple class represents attribute-value tuples, which are objects that contain the attribute name and value of a metadata attribute.

- enableUpdates

Enables updates to the query results.

- disableUpdates

Disables updates to the query results.

operationQueue

The queue on which query result notifications are posted.