Products Google for Education Blockly Reference Blockly Framework Reference ZIndexedView public protocol ZIndexedView Protocol that a UIView must conform to in order to be inserted into a ZIndexedGroupView. zIndex The z-index of the view. Views with higher z-index values will always appear above ones with lower values. Declaration Swift var zIndex: UInt Except as otherwise noted, the content of this page is licensed under the Creative Commons Attribution 3.0 License, and code samples are licensed under the Apache 2.0 License. For details, see our Site Policies. Java is a registered trademark of Oracle and/or its affiliates. Last updated December 1, 2017.