Validation allow only number and characters in edit text in android

Question

In my application I have to validate the EditText. It should only allow character, digits, underscores, and hyphens.

Here is my code:

edit         


        

Answer 1

Try this:

public static SpannableStringBuilder getErrorMsg(String estring) {
        int ecolor = Color.BLACK; // whatever color you want
        ForegroundColorSpan fgcspan = new ForegroundColorSpan(ecolor);
        SpannableStringBuilder ssbuilder = new SpannableStringBuilder(estring);
        ssbuilder.setSpan(fgcspan, 0, estring.length(), 0);
        return ssbuilder;
    }

Then setError() to EditText when you want show 'only Letters and digits are allowed' as below.

etPhone.setError(getErrorMsg("Only lowercase letters and numbers are allowed!"));

Hope this will help you. I use the same for Validation Check in EditText in my apps.