TimePicker posts 12-hour formatted value in the control when device setting is 24-hour format

Question

On both Android and iOS TimePicker picker seems to respect device settings (24/12-hour format). However, when TimePicker posts value from the picker into the control, value appears in the 12-hour format regardless of the device setting. Is there a TimePicker.Format value, which will respect device settings (24/12-hour format)?

Answer 1

Hello,​

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Please use Format to control it. If you set it like following code format, the time is 24 hour format.

   <TimePicker Format="HH:mm"></TimePicker>  

=========================
Update===============================

You can use dependService to get the current system time settings if 12/24 hours format.

Create an interface called ITimer.

   public interface ITimer  
       {  
           bool IsTime12();  
     
       }  

Then achieve it in android and iOS.

For Android.

   using Android.App;  
   using Android.Content;  
   using Android.OS;  
   using Android.Runtime;  
   using Android.Views;  
   using Android.Widget;  
   using System;  
   using System.Collections.Generic;  
   using System.Linq;  
   using System.Text;  
   using TimePicker2412.Droid;  
   using Xamarin.Forms;  
     
   [assembly: Dependency(typeof(TimerService))]  
   namespace TimePicker2412.Droid  
   {  
       class TimerService : ITimer  
       {  
           public bool IsTime12()  
           {  
               //throw new NotImplementedException();  
     
               ContentResolver cv = Android.App.Application.Context.ContentResolver;  
               String strTimeFormat = Android.Provider.Settings.System.GetString(cv,  
                                                  Android.Provider.Settings.System.Time1224);  
     
               if (strTimeFormat.Equals("24"))  
     
               {  
                   return false;  
               }  
               else  
               {  
                   return true;  
               }  
           }  
       }  
   }  

For iOS.

   using Foundation;  
   using System;  
   using System.Collections.Generic;  
   using System.Linq;  
   using System.Text;  
   using TimePicker2412.iOS;  
   using UIKit;  
   using Xamarin.Forms;  
     
   [assembly: Dependency(typeof(TimerService))]  
   namespace TimePicker2412.iOS  
   {  
       class TimerService : ITimer  
       {  
           public bool IsTime12()  
           {  
              
     
               var dateFormatter = new NSDateFormatter();  
               dateFormatter.DateStyle = NSDateFormatterStyle.None;  
               dateFormatter.TimeStyle = NSDateFormatterStyle.Short;  
     
               var dateString = dateFormatter.ToString(NSDate.Now);  
               var isTwelveHourFormat =  
               dateString.Contains(dateFormatter.AMSymbol) ||  
               dateString.Contains(dateFormatter.PMSymbol);  
               return isTwelveHourFormat;  
           }  
       }  
   }  

When we use TimePicker, we can judge the current system settings. If the system setting is 24 hours. We can set TimePicker.Format in the background code.

   if (!DependencyService.Get<ITimer>().IsTime12()) {  
     
                   MyTimePicker.Format = "HH:mm";  
     
     
               };  

Best Regards,

Leon Lu

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