Cascades Development

[lcaro]

Ok, thanks for quick reply.

Hopefully RIM will address it. Fingers crossed

Regards

[theappspod]

Can anyone help with this pleasetethering only way I could see this working was to remove all non numeric characters in ontextchanging but this didn't work. Is there anyway that I can detect what key has been pressed and cancel it if needed? I have seen one other app do this but have no idea how.

Many thanks.

[theappspod]

I have been searching and searching for a solution to this and have found a possability.

https://developer.blackberry.com/cascades/reference/qevent.html

I have not come accross QEvents but it does have a Keypress event.  Anyone used this before?

[theappspod · Accepted solution]

Have managed to get numeric key presses working.

I created a javascript function as follows:

            // Strips out non numeric characters allowing only 0-9 and '.'
            function numericOnly (textin) {
             
                 var m_strOut = new String (textin);
                 m_strOut = m_strOut.replace(/[^\d.]/g,'');
                 
                 return m_strOut;
                                     
            } // end numericOnly

and then in the onTextChanging event did this:

onTextChanging: {
    txtAmount.text = rootContainer.numericOnly(text);
}

 Hope this helps someone.

[georg22]

Thanks!

[vencedor]

there are more options with TextArea or TextField property inputMode, unfortunately I didn't see anything that limits to numeric only. the closest I found is TextFieldInputMode.Pin

        inputMode : TextFieldInputMode.Pin

[georg22]

@vencedor: TextFieldInputMode determines, which kind of keyboard apperas. In this case i use "TextFieldInputMode.NumbersAndPunctuation", but unfortunally it still has has keys, i dont want the user to use.

[Titoeuf]

Hi theappspod,

You're solution is very helpful but, for a weird reason, it seems possible to "break" the function.

The function works great for normal input situation, but i found out that if you spam the textfield with non-numeric characters the function could "break",  allowing the user to enter non-numeric characters again and you have to restart the application for the function to work again.

Anyone has the same behavior or have a fix for this? On my side, I'm trying to look further into this and I'll post a solution if I ever find one.

I really hope RIM makes something for this because numeric only input field could be of use in a lot of applications.

[joelajean]

For a currency field... here is was I use... that's until RIM come up with a Currency solution

  // Strips out non numeric characters allowing only 0-9 and '.'
  function currencyOnly(text) 
  {
    // First clean and only keep numerics and .
    var result = new String(text);
    result = result.replace(/[^\d.]/g,'');  
    
    // Check if more then on . is inputted    
    if (text.split(".").length >= 3)
    {
      console.debug("Field must only have one .");        
      result = text.substring(0, text.length - 1);
    }      
    
    // Next we verify that only two decial are keeped.        
    var decimal = text.indexOf(".");
          
    if (decimal != -1)
    {
      if (decimal + 3 < text.length)
      {
        console.debug("Field must have only 2 decimal places");
        result = text.substring(0, decimal + 3);
      }        
    }
   

    return result;                      
  }

[klz]

great! but how to allow users to input negative values too?