How to Check Whether the System Time is 24-Hour Format?

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Question

How to Check Whether the System Time is 24-Hour Format?

Short Answer

With using is24HourClock9+

• static is24HourClock(): boolean
• Determine whether the system time is in 24-hour format.
• Card capabilities : Starting from API version 11, this interface supports use in ArkTS cards.
• Meta-service API: Starting from API version 12, this interface can be used in meta-services.
• System Capability : SystemCapability.Global.I18n
• Return value:

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Example:

let  is24HourClock : boolean = i18n.System.is24HourClock (); // Is the system 24-hour switch turned on ?

Applicable Scenarios

• When your application displays time-sensitive data and needs to match the user’s system preference (12-hour or 24-hour).
• In internationalized apps that adapt UI based on locale and time settings.
• When developing widgets, cards, or meta-services that need consistent time display across devices and services.

Written by Emine INAN