CODEWITHSUNDEEP
androidxamarinxamarin.androidandroid-edittext
Nancy Kanwar
Nancy Kanwar

Reputation: 157

How to change text of edit text in Text changed event in Xamarin Android

I have a problem changing the text of "EditText" in "Xamarin Android" ,I wish to put a "/" after 2 character's so that ,I can obtain text like "MM/YY" It happens to Work with if condition but when user presses "backspace" to erase it ,text does not vanishes, I have so far divided those four character's with "Replace" Function but am unable to put that "str" back to the Edit Text, If i do so , It simply Crashes.
Code -TextChangedEvent of expiryEditText

            var Expirydata = expiryEditText.Text;
            if(Expirydata.Length == 2)
            {
                expiryEditText.Text = expiryEditText.Text + "/";
            }
            else if(Expirydata.Length ==5)
            {
                monthId = Expirydata.Substring(0, 2);
                yearId = Expirydata.Substring(Expirydata.Length - 2);
                var xx = monthId + "/"+ yearId;
                String str = Expirydata.ToString().Replace(Expirydata,xx);
               // expiryEditText.Text = xx.ToString();

            }
            else
            {

            }

Upvotes: 1

Views: 1178

Answers (1)

FreakyAli
FreakyAli

Reputation: 16519

The reason this is happening is that your current code is not considering the part where the user can press backspace to get back to remove the text again for that you can use the Start property to find out what the current value is and make the changes accordingly

 if (expiryEditText.Length() == 2 && e.Start != 2)
    {
        expiryEditText.Append("/");
    }
else
    {
      if (expiryEditText.Length() >2  && expiryEditText.Text.IndexOf('-') == -1)
      {
        expiryEditText.Text = expiryEditText.Text.Insert(2, "-");
        expiryEditText.SetSelection(expiryEditText.Text.Length);
      }
    }

Good luck

Revert in case of queries.

Upvotes: 1

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