Maui android on screen keyboard issue

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Maui android on screen keyboard issue

Haviv Elbsz 2,071

Jan 24, 2023, 7:23 AM

Hello all. How I can modify the on screen keyboard for my application. I want that the on screen keyboard when my app run to contain only the alphanumeric and a few non alphanumeric characters. How I can do that and when exit my app to return to the default on screen keyboard. Thank you very much

Haviv Elbsz 2,071 Reputation points

Jan 27, 2023, 11:35 AM

Sory that I was in hurry. when I go to the top to add something. the cursor jump down after every character typed. thank you.

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Haviv Elbsz 2,071 Reputation points

Jan 27, 2023, 11:35 AM

Sory that I was in hurry. when I go to the top to add something. the cursor jump down after every character typed. thank you.

Answer 1

Leon Lu (Shanghai Wicresoft Co,.Ltd.) 80,691 Microsoft External Staff

Jan 25, 2023, 5:56 AM

Hello,

How I can do that and when exit my app to return to the default on screen keyboard.

The popup soft keyboard comes from the Android OS, we cannot change android system level's soft keyboard.

However, if you use <Entry> to input characters in your application, we can change input type for all of your Entry by Resources\Styles\Styles.xaml, you can find <Style TargetType="Entry"> in Resources\Styles\Styles.xaml, then add following xml.

   <Setter Property="Keyboard" Value="Numeric" />

Or set <Entry Keyboard="Numeric"></Entry> for all of Entrys in your application.

Best Regards,

Leon Lu

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Haviv Elbsz 2,071 Reputation points

Jan 25, 2023, 6:25 AM

Hi and thank you. actually I need that for the editor to accept the alphabet and the *~|- characters. I find a workaround with an if condition in the editor textchsnged event but when the unwanted characters is removed the cursor position jump to the top left and when I saved the cursor position before remove and set it again after remove that not working. mainly the cursor setting not working. myeditor.CurdorPodition = some int. not working inside the textchsnged event. can you help in this. Thank you again
Leon Lu (Shanghai Wicresoft Co,.Ltd.) 80,691 Reputation points Microsoft External Staff

Jan 25, 2023, 8:54 AM

Haviv Elbsz Sure, could you share your code that I can reproduce this issue?

Haviv Elbsz 2,071

Jan 25, 2023, 11:17 AM

Yes here is noted that in debug the. variable cursorposition take the right value but the setting not done

   private void InputTB_TextChanged(object sender, TextChangedEventArgs e)
   {
     if(IsAppRunning) return;

     if(!Regex.IsMatch(e.NewTextValue, @"^[\s\w-*|~]*$"))
     {
       int cursorPosition = InputTB.CursorPosition;
       InputTB.Text = e.OldTextValue;
       InputTB.CursorPosition = cursorPosition;
     }

        if (!Regex.IsMatch(InputTB.Text, @"^[\s\w-*|~]*$"))
     {
       InputTB.TextColor = Colors.Red;
     }
     else
     {
       InputTB.TextColor = Colors.Black;
     }

     oddsEvensChecker = Regex.Replace(InputTB.Text, @"\W+", "");
     if(!Regex.IsMatch(oddsEvensChecker, @"^[EO]+$"))
     {
       UseOddsEvensCKB.IsChecked = false;
       IsEvensOddsPuzzle = false;
     }
   }

Leon Lu (Shanghai Wicresoft Co,.Ltd.) 80,691 Microsoft External Staff

Jan 27, 2023, 7:40 AM

Haviv Elbsz you can try to use the following code. Is that you need?

const string numberRegex = @"^[\s\w-*|~]*$";  
    private void Editor_TextChanged(object sender, TextChangedEventArgs args)  
    {  
        
        bool IsValid;  
        if (!string.IsNullOrWhiteSpace(args.NewTextValue))  
        {  
            IsValid = (Regex.IsMatch(args.NewTextValue, numberRegex,RegexOptions.IgnoreCase, TimeSpan.FromMilliseconds(250)));  
            ((Editor)sender).Text = IsValid ? args.NewTextValue : args.NewTextValue.Remove(args.NewTextValue.Length - 1);  
            ((Editor)sender).CursorPosition = args.NewTextValue.Length;  
        }

}

Haviv Elbsz 2,071 Reputation points

Jan 27, 2023, 9:36 AM

Waw great! Thank you very much.

Please can you add a bit of explanation?
Haviv Elbsz 2,071 Reputation points

Jan 27, 2023, 12:00 PM

I was in hurry to say that it's working. but when I want to add something at the top the cursor jump down after types a character.

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