Mascara telefone BR para android

gistfile1.java

package lethus.socialdroid.core.widgets;

import android.content.Context;
import android.text.Editable;
import android.text.InputType;
import android.text.TextWatcher;
import android.text.method.NumberKeyListener;
import android.util.AttributeSet;
import android.widget.EditText;

public class PhoneEditText extends EditText {
	private boolean isUpdating;

	/*
	 * Maps the cursor position from phone number to masked number... 1234567890
	 * => (12) 3456-7890
	 */
	private int positioning[] = { 1, 2, 3, 6, 7, 8, 9, 11, 12, 13, 14, 15 };

	public PhoneEditText(Context context, AttributeSet attrs, int defStyle) {
		super(context, attrs, defStyle);
		initialize();

	}

	public PhoneEditText(Context context, AttributeSet attrs) {
		super(context, attrs);
		initialize();

	}

	public PhoneEditText(Context context) {
		super(context);
		initialize();

	}

	public String getCleanText() {
		String text = PhoneEditText.this.getText().toString();

		text.replaceAll("[^0-9]*", "");
		return text;

	}

	private void initialize() {

		final int maxNumberLength = 11;
		this.setKeyListener(keylistenerNumber);

		this.setText("(  )     -     ");
		this.setSelection(1);

		this.addTextChangedListener(new TextWatcher() {
			public void afterTextChanged(Editable s) {
				String current = s.toString();

				/*
				 * Ok, here is the trick... calling setText below will recurse
				 * to this function, so we set a flag that we are actually
				 * updating the text, so we don't need to reprocess it...
				 */
				if (isUpdating) {
					isUpdating = false;
					return;

				}

				/* Strip any non numeric digit from the String... */
				String number = current.replaceAll("[^0-9]*", "");
				if (number.length() > 11)
					number = number.substring(0, 11);
				
				int length = number.length();

				/* Pad the number to 10 characters... */
				String paddedNumber = padNumber(number, maxNumberLength);

				/* Split phone number into parts... */
				String ddd = paddedNumber.substring(0, 2);
				String part1 = paddedNumber.substring(2, 6);
				String part2 = paddedNumber.substring(6, 11).trim();

				/* build the masked phone number... */
				String phone = "(" + ddd + ") " + part1 + "-" + part2;

				/*
				 * Set the update flag, so the recurring call to
				 * afterTextChanged won't do nothing...
				 */
				isUpdating = true;
				PhoneEditText.this.setText(phone);

				PhoneEditText.this.setSelection(positioning[length]);

			}

			public void beforeTextChanged(CharSequence s, int start, int count,
					int after) {

			}

			public void onTextChanged(CharSequence s, int start, int before,
					int count) {

			}
		});
	}

	protected String padNumber(String number, int maxLength) {
		String padded = new String(number);
		for (int i = 0; i < maxLength - number.length(); i++)
			padded += " ";
		return padded;

	}

	private final KeylistenerNumber keylistenerNumber = new KeylistenerNumber();

	private class KeylistenerNumber extends NumberKeyListener {

		public int getInputType() {
			return InputType.TYPE_CLASS_NUMBER
					| InputType.TYPE_TEXT_FLAG_NO_SUGGESTIONS;

		}

		@Override
		protected char[] getAcceptedChars() {
			return new char[] { '0', '1', '2', '3', '4', '5', '6', '7', '8',
					'9' };

		}
	}
}

Muito bom!