Instance Method

enableUpdates

Enables updates to the query results.

Declaration

- (void)enableUpdates;

Discussion

Unless you use enumerateResultsUsingBlock: or enumerateResultsWithOptions:usingBlock:, you should invoke this method after you’re done iterating over the query results.

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.

- valueOfAttribute:forResultAtIndex:

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

- disableUpdates

Disables updates to the query results.

operationQueue

The queue on which query result notifications are posted.

Beta Software

This documentation contains preliminary information about an API or technology in development. This information is subject to change, and software implemented according to this documentation should be tested with final operating system software.

Learn more about using Apple's beta software