Created
April 23, 2019 20:41
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Android Mask for EditText that allows erasing pressing and holding backspace
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| public abstract class MaskUtils { | |
| public static TextWatcher mask(final EditText editText, final String mask) { | |
| return new TextWatcher() { | |
| int mBefore; | |
| int mCount; | |
| public void onTextChanged(CharSequence s, int start, int before, int count) { | |
| mBefore = before; | |
| mCount = count; | |
| } | |
| public void beforeTextChanged(CharSequence s, int start, int count, int after) { | |
| } | |
| public void afterTextChanged(Editable s) { | |
| editText.removeTextChangedListener(this); | |
| String value = unmask(s.toString()); | |
| String maskAux = ""; | |
| int i = 0; | |
| for (char m : mask.toCharArray()) { | |
| if (m != '#') { | |
| maskAux += m; | |
| continue; | |
| } | |
| try { | |
| maskAux += value.charAt(i); | |
| } catch (Exception e) { | |
| break; | |
| } | |
| i++; | |
| } | |
| if (!unmask(maskAux).equals(value) || mCount > mBefore) { | |
| editText.setText(maskAux); | |
| editText.setSelection(maskAux.length()); | |
| } | |
| editText.addTextChangedListener(this); | |
| } | |
| }; | |
| } | |
| public static String unmask(String s) { | |
| return s.replaceAll("[.]", "").replaceAll("[-]", "") | |
| .replaceAll("[/]", "").replaceAll("[(]", "") | |
| .replaceAll("[)]", "").replaceAll(" ", ""); | |
| } | |
| } |
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