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

A solution similar to the android:digits="0123456789*", is to use this:

EditText etext = new EditText(this);
etext.setKeyListener(DigitsKeyListener.getInstance("0123456789*"));

An added bonus is that it also displays the numeric keypad.