Mask an EditText with Phone Number Format NaN like in PhoneNumberUtils

Question

I want to make user inputted phone number in an editText to dynamically change format every time the user inputs a number. That is, when user inputs up to 4 digits, like 7144, the editText shows "714-4". I would like the editText to be dynamically updated to format ###-###-#### whenever the user inputs a digit. how can this be done? also, I am handling more than one editTexts.

Answer 1

Easiest way to do this is to use the built in Android PhoneNumberFormattingTextWatcher.

So basically you get your EditText in code and set your text watcher like this...

EditText inputField = (EditText) findViewById(R.id.inputfield); inputField.addTextChangedListener(new PhoneNumberFormattingTextWatcher()); 

Nice thing about using PhoneNumberFormattingTextWatcher is that it will format your number entry correctly based on your locale.

Answer 2

Above answer is right but it works with country specific. if anyone want such formatted phone number(###-###-####). Then use this:

etPhoneNumber.addTextChangedListener(new TextWatcher() {                 @Override                 public void beforeTextChanged(CharSequence s, int start, int count, int after) {                     int digits = etPhoneNumber.getText().toString().length();                     if (digits > 1)                         lastChar = etPhoneNumber.getText().toString().substring(digits-1);                 }                  @Override                 public void onTextChanged(CharSequence s, int start, int before, int count) {                     int digits = etPhoneNumber.getText().toString().length();                     Log.d("LENGTH",""+digits);                     if (!lastChar.equals("-")) {                         if (digits == 3 || digits == 7) {                             etPhoneNumber.append("-");                         }                     }                 }                  @Override                 public void afterTextChanged(Editable s) {                  }             }); 

Declare String lastChar = " " in your activity.

Now add this line in xml of your edittext

android:inputType="phone" 

That's all.

Edited: If you want your edittext lenght to limit 10 digits add line below also:

android:maxLength="12" 

(It is 12 because "-" will take space two times)