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private class UsPhoneNumberFormatter implements TextWatcher {
//This TextWatcher sub-class formats entered numbers as 1 (123) 456-7890
private boolean mFormatting; // this is a flag which prevents the
// stack(onTextChanged)
private boolean clearFlag;
private int mLastStartLocation;
private String mLastBeforeText;
private WeakReference<EditText> mWeakEditText;
public UsPhoneNumberFormatter(WeakReference<EditText> weakEditText) {
this.mWeakEditText = weakEditText;
}
@Override
public void beforeTextChanged(CharSequence s, int start, int count,
int after) {
if (after == 0 && s.toString().equals("1 ")) {
clearFlag = true;
}
mLastStartLocation = start;
mLastBeforeText = s.toString();
}
@Override
public void onTextChanged(CharSequence s, int start, int before,
int count) {
// TODO: Do nothing
}
@Override
public void afterTextChanged(Editable s) {
// Make sure to ignore calls to afterTextChanged caused by the work
// done below
if (!mFormatting) {
mFormatting = true;
int curPos = mLastStartLocation;
String beforeValue = mLastBeforeText;
String currentValue = s.toString();
String formattedValue = formatUsNumber(s);
if (currentValue.length() > beforeValue.length()) {
int setCusorPos = formattedValue.length()
- (beforeValue.length() - curPos);
if (
(currentValue.length() <= 14 && !currentValue.startsWith("1"))
||
(currentValue.length() <= 16 && currentValue.startsWith("1"))
)
mWeakEditText.get().setSelection(setCusorPos < 0 ? 0 : setCusorPos);
} else {
int setCusorPos = formattedValue.length()
- (currentValue.length() - curPos);
if(setCusorPos > 0 && !Character.isDigit(formattedValue.charAt(setCusorPos -1))){
setCusorPos--;
}
mWeakEditText.get().setSelection(setCusorPos < 0 ? 0 : setCusorPos);
}
mFormatting = false;
int totalDigitCount = s.length();
String allString = s.toString();
if(
(totalDigitCount == 14 && !allString.startsWith("1"))
||
(totalDigitCount == 16 && allString.startsWith("1"))
){
//todo When this is validated...
} else {
//todo When This is not validated...
}
}
}
private String formatUsNumber(Editable text) {
StringBuilder formattedString = new StringBuilder();
// Remove everything except digits
int p = 0;
while (p < text.length()) {
char ch = text.charAt(p);
if (!Character.isDigit(ch)) {
text.delete(p, p + 1);
} else {
p++;
}
}
// Now only digits are remaining
String allDigitString = text.toString();
int totalDigitCount = allDigitString.length();
if (totalDigitCount == 0){
// May be the total length of input length is greater than the
// expected value so we'll remove all formatting
text.clear();
text.append(allDigitString);
return allDigitString;
}
int alreadyPlacedDigitCount = 0;
// Only '1' is remaining and user pressed backspace and so we clear
// the edit text.
if (allDigitString.equals("1") && clearFlag) {
text.clear();
clearFlag = false;
return "";
}
if (allDigitString.startsWith("1")) {
formattedString.append("1 ");
alreadyPlacedDigitCount++;
}
// The first 3 numbers beyond '1' must be enclosed in brackets "()"
if (totalDigitCount - alreadyPlacedDigitCount > 3) {
formattedString.append("("
+ allDigitString.substring(alreadyPlacedDigitCount,
alreadyPlacedDigitCount + 3) + ") ");
alreadyPlacedDigitCount += 3;
}
// There must be a '-' inserted after the next 3 numbers
if (totalDigitCount - alreadyPlacedDigitCount > 3) {
formattedString.append(allDigitString.substring(
alreadyPlacedDigitCount, alreadyPlacedDigitCount + 3)
+ "-");
alreadyPlacedDigitCount += 3;
}
// All the required formatting is done so we'll just copy the
// remaining digits.
if (totalDigitCount > alreadyPlacedDigitCount) {
formattedString.append(allDigitString
.substring(alreadyPlacedDigitCount));
}
text.clear();
if (
(totalDigitCount > 10 && !allDigitString.startsWith("1"))
||
(totalDigitCount > 11 && allDigitString.startsWith("1"))
) {
String tempTxt = removeLastChar(formattedString.toString());
text.append(tempTxt);
mLastBeforeText = tempTxt;
} else {
text.append(formattedString.toString());
}
return formattedString.toString();
}
private String removeLastChar(String str) {
return str.substring(0,str.length()-1);
}
}
private class UsPhoneNumberFormatter implements TextWatcher {
//This TextWatcher sub-class formats entered numbers as 1 (123) 456-7890
private boolean mFormatting; // this is a flag which prevents the
// stack(onTextChanged)
private boolean clearFlag;
private int mLastStartLocation;
private String mLastBeforeText;
private WeakReference<EditText> mWeakEditText;
public UsPhoneNumberFormatter(WeakReference<EditText> weakEditText) {
this.mWeakEditText = weakEditText;
}
@Override
public void beforeTextChanged(CharSequence s, int start, int count,
int after) {
if (after == 0 && s.toString().equals("1 ")) {
clearFlag = true;
}
mLastStartLocation = start;
mLastBeforeText = s.toString();
}
@Override
public void onTextChanged(CharSequence s, int start, int before,
int count) {
// TODO: Do nothing
}
@Override
public void afterTextChanged(Editable s) {
// Make sure to ignore calls to afterTextChanged caused by the work
// done below
if (!mFormatting) {
mFormatting = true;
int curPos = mLastStartLocation;
String beforeValue = mLastBeforeText;
String currentValue = s.toString();
String formattedValue = formatUsNumber(s);
if (currentValue.length() > beforeValue.length()) {
int setCusorPos = formattedValue.length()
- (beforeValue.length() - curPos);
mWeakEditText.get().setSelection(setCusorPos < 0 ? 0 : setCusorPos);
} else {
int setCusorPos = formattedValue.length()
- (currentValue.length() - curPos);
if(setCusorPos > 0 && !Character.isDigit(formattedValue.charAt(setCusorPos -1))){
setCusorPos--;
}
mWeakEditText.get().setSelection(setCusorPos < 0 ? 0 : setCusorPos);
}
mFormatting = false;
}
}
private String formatUsNumber(Editable text) {
StringBuilder formattedString = new StringBuilder();
// Remove everything except digits
int p = 0;
while (p < text.length()) {
char ch = text.charAt(p);
if (!Character.isDigit(ch)) {
text.delete(p, p + 1);
} else {
p++;
}
}
// Now only digits are remaining
String allDigitString = text.toString();
int totalDigitCount = allDigitString.length();
if (totalDigitCount == 0
|| (totalDigitCount > 10 && !allDigitString.startsWith("1"))
|| totalDigitCount > 11) {
// May be the total length of input length is greater than the
// expected value so we'll remove all formatting
text.clear();
text.append(allDigitString);
return allDigitString;
}
int alreadyPlacedDigitCount = 0;
// Only '1' is remaining and user pressed backspace and so we clear
// the edit text.
if (allDigitString.equals("1") && clearFlag) {
text.clear();
clearFlag = false;
return "";
}
if (allDigitString.startsWith("1")) {
formattedString.append("1 ");
alreadyPlacedDigitCount++;
}
// The first 3 numbers beyond '1' must be enclosed in brackets "()"
if (totalDigitCount - alreadyPlacedDigitCount > 3) {
formattedString.append("("
+ allDigitString.substring(alreadyPlacedDigitCount,
alreadyPlacedDigitCount + 3) + ") ");
alreadyPlacedDigitCount += 3;
}
// There must be a '-' inserted after the next 3 numbers
if (totalDigitCount - alreadyPlacedDigitCount > 3) {
formattedString.append(allDigitString.substring(
alreadyPlacedDigitCount, alreadyPlacedDigitCount + 3)
+ "-");
alreadyPlacedDigitCount += 3;
}
// All the required formatting is done so we'll just copy the
// remaining digits.
if (totalDigitCount > alreadyPlacedDigitCount) {
formattedString.append(allDigitString
.substring(alreadyPlacedDigitCount));
}
text.clear();
text.append(formattedString.toString());
return formattedString.toString();
}
}
@miroslavign

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miroslavign commented May 2, 2016

Hi,
tapping "1" on empty editText(wrapped around android.support.design.widget.TextInputLayout),
why do I get:
java.lang.IndexOutOfBoundsException: setSpan (2 ... 2) ends beyond length 1
...

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