Spinner Usage# The following segment provides instructions for designers and developers regarding the appropriate utilization of this component in various situations. Do: Use when the user has to wait for more than 1 second. Use either stand-alone or within components (e.g. in Buttons to indicate progress after clicking "save“). Use vertically and horizontally centered within the referring area. Use a blocking layer for the whole screen when the user is not supposed to start another activity. Include simple text to explain why the user is waiting. Disable the component while the spinner is visible if it is triggered by an interaction. Don't: Don't use too many Spinners at the same time within a page or application. Don't use Spinners for delays of more than 10 seconds without providing a progress bar showing the estimated waiting time. Don't use threatening text such as "Don't click again" to prevent the user from clicking twice.