Using PhoneNumberFormattingTextWatcher without typing country calling code
In the login panel of my app, I divided the country calling code and the remaining numbers in two editable TextView as below:
I want to use international formatting standard in the TextView on the right. If a user who has a phone number as +905444444444 types in number in these boxes, I want to see "90" in the box on the left and "544 444 4444" on the right.
For this reason, I tried to use the following implementation that uses libphonenumber:
/**
* Watches a {@link android.widget.TextView} and if a phone number is entered
* will format it.
* <p>
* Stop formatting when the user
* <ul>
* <li>Inputs non-dialable characters</li>
* <li>Removes the separator in the middle of string.</li>
* </ul>
* <p>
* The formatting will be restarted once the text is cleared.
*/
public class PhoneNumberFormattingTextWatcher implements TextWatcher {
/**
* Indicates the change was caused by ourselves.
*/
private boolean mSelfChange = false;
/**
* Indicates the formatting has been stopped.
*/
private boolean mStopFormatting;
private AsYouTypeFormatter mFormatter;
private String code;
/**
* The formatting is based on the current system locale and future locale changes
* may not take effect on this instance.
*/
public PhoneNumberFormattingTextWatcher() {
this(Locale.getDefault().getCountry());
}
/**
* The formatting is based on the given <code>countryCode</code>.
*
* @param countryCode the ISO 3166-1 two-letter country code that indicates the country/region
* where the phone number is being entered.
*/
public PhoneNumberFormattingTextWatcher(String countryCode) {
if (countryCode == null) throw new IllegalArgumentException();
mFormatter = PhoneNumberUtil.getInstance().getAsYouTypeFormatter(countryCode);
}
@Override
public void beforeTextChanged(CharSequence s, int start, int count,
int after) {
if (mSelfChange || mStopFormatting) {
return;
}
// If the user manually deleted any non-dialable characters, stop formatting
if (count > 0 && hasSeparator(s, start, count)) {
stopFormatting();
}
}
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
if (mSelfChange || mStopFormatting) {
return;
}
// If the user inserted any non-dialable characters, stop formatting
if (count > 0 && hasSeparator(s, start, count)) {
stopFormatting();
}
}
@Override
public synchronized void afterTextChanged(Editable s) {
if (mStopFormatting) {
// Restart the formatting when all texts were clear.
mStopFormatting = !(s.length() == 0);
return;
}
if (mSelfChange) {
// Ignore the change caused by s.replace().
return;
}
String formatted = reformat(s, Selection.getSelectionEnd(s));
if (formatted != null) {
int rememberedPos = mFormatter.getRememberedPosition();
mSelfChange = true;
s.replace(0, s.length(), formatted, 0, formatted.length());
// The text could be changed by other TextWatcher after we changed it. If we found the
// text is not the one we were expecting, just give up calling setSelection().
if (formatted.equals(s.toString())) {
Selection.setSelection(s, rememberedPos);
}
mSelfChange = false;
}
// PhoneNumberUtils.ttsSpanAsPhoneNumber(s, 0, s.length());
}
/**
* Generate the formatted number by ignoring all non-dialable chars and stick the cursor to the
* nearest dialable char to the left. For instance, if the number is (650) 123-45678 and '4' is
* removed then the cursor should be behind '3' instead of '-'.
*/
private String reformat(CharSequence s, int cursor) {
// The index of char to the leftward of the cursor.
int curIndex = cursor - 1;
String formatted = null;
mFormatter.clear();
char lastNonSeparator = 0;
boolean hasCursor = false;
int len = s.length();
for (int i = 0; i < len; i++) {
char c = s.charAt(i);
if (PhoneNumberUtils.isNonSeparator(c)) {
if (lastNonSeparator != 0) {
formatted = getFormattedNumber(lastNonSeparator, hasCursor);
hasCursor = false;
}
lastNonSeparator = c;
}
if (i == curIndex) {
hasCursor = true;
}
}
if (lastNonSeparator != 0) {
formatted = getFormattedNumber(lastNonSeparator, hasCursor);
}
return formatted;
}
private String getFormattedNumber(char lastNonSeparator, boolean hasCursor) {
return hasCursor ? mFormatter.inputDigitAndRememberPosition(lastNonSeparator)
: mFormatter.inputDigit(lastNonSeparator);
}
private void stopFormatting() {
mStopFormatting = true;
mFormatter.clear();
}
private boolean hasSeparator(final CharSequence s, final int start, final int count) {
for (int i = start; i < start + count; i++) {
char c = s.charAt(i);
if (!PhoneNumberUtils.isNonSeparator(c)) {
return true;
}
}
return false;
}
}
However, this TextWatcher formats the numbers includes the calling code. In other words, it successfully formats "+905444444444" but cannot format "54444444444". How can I achieve to get the same result when the input phone number includes the country code in the TextView on the right? Needless to say but I want to get the following output:
- 5
- 54
- 544
- 544 4
- 544 44
- 544 444
- 544 444 4
- 544 444 44 ...
Answer
I edited reformat(charSequence, cursor) method and achieved to get the internationally formatted phone numbers without country calling code at last. If you want to get the same result, you can see the edited code below:
/**
* Watches a {@link android.widget.TextView} and if a phone number is entered
* will format it.
* <p>
* Stop formatting when the user
* <ul>
* <li>Inputs non-dialable characters</li>
* <li>Removes the separator in the middle of string.</li>
* </ul>
* <p>
* The formatting will be restarted once the text is cleared.
*/
public class PhoneNumberFormattingTextWatcher implements TextWatcher {
/**
* Indicates the change was caused by ourselves.
*/
private boolean mSelfChange = false;
/**
* Indicates the formatting has been stopped.
*/
private boolean mStopFormatting;
private AsYouTypeFormatter mFormatter;
private String countryCode;
/**
* The formatting is based on the current system locale and future locale changes
* may not take effect on this instance.
*/
public PhoneNumberFormattingTextWatcher() {
this(Locale.getDefault().getCountry());
}
/**
* The formatting is based on the given <code>countryCode</code>.
*
* @param countryCode the ISO 3166-1 two-letter country code that indicates the country/region
* where the phone number is being entered.
*
* @hide
*/
public PhoneNumberFormattingTextWatcher(String countryCode) {
if (countryCode == null) throw new IllegalArgumentException();
mFormatter = PhoneNumberUtil.getInstance().getAsYouTypeFormatter(countryCode);
this.countryCode = countryCode;
}
@Override
public void beforeTextChanged(CharSequence s, int start, int count,
int after) {
if (mSelfChange || mStopFormatting) {
return;
}
// If the user manually deleted any non-dialable characters, stop formatting
if (count > 0 && hasSeparator(s, start, count)) {
stopFormatting();
}
}
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
if (mSelfChange || mStopFormatting) {
return;
}
// If the user inserted any non-dialable characters, stop formatting
if (count > 0 && hasSeparator(s, start, count)) {
stopFormatting();
}
}
@Override
public synchronized void afterTextChanged(Editable s) {
if (mStopFormatting) {
// Restart the formatting when all texts were clear.
mStopFormatting = !(s.length() == 0);
return;
}
if (mSelfChange) {
// Ignore the change caused by s.replace().
return;
}
String formatted = reformat(s, Selection.getSelectionEnd(s));
if (formatted != null) {
int rememberedPos = formatted.length();
Log.v("rememberedPos", "" + rememberedPos);
mSelfChange = true;
s.replace(0, s.length(), formatted, 0, formatted.length());
// The text could be changed by other TextWatcher after we changed it. If we found the
// text is not the one we were expecting, just give up calling setSelection().
if (formatted.equals(s.toString())) {
Selection.setSelection(s, rememberedPos);
}
mSelfChange = false;
}
}
/**
* Generate the formatted number by ignoring all non-dialable chars and stick the cursor to the
* nearest dialable char to the left. For instance, if the number is (650) 123-45678 and '4' is
* removed then the cursor should be behind '3' instead of '-'.
*/
private String reformat(CharSequence s, int cursor) {
// The index of char to the leftward of the cursor.
int curIndex = cursor - 1;
String formatted = null;
mFormatter.clear();
char lastNonSeparator = 0;
boolean hasCursor = false;
String countryCallingCode = "+" + CountryCodesAdapter.getCode(countryCode);
s = countryCallingCode + s;
int len = s.length();
for (int i = 0; i < len; i++) {
char c = s.charAt(i);
if (PhoneNumberUtils.isNonSeparator(c)) {
if (lastNonSeparator != 0) {
formatted = getFormattedNumber(lastNonSeparator, hasCursor);
hasCursor = false;
}
lastNonSeparator = c;
}
if (i == curIndex) {
hasCursor = true;
}
}
if (lastNonSeparator != 0) {
Log.v("lastNonSeparator", "" + lastNonSeparator);
formatted = getFormattedNumber(lastNonSeparator, hasCursor);
}
if (formatted.length() > countryCallingCode.length()) {
if (formatted.charAt(countryCallingCode.length()) == ' ')
return formatted.substring(countryCallingCode.length() + 1);
return formatted.substring(countryCallingCode.length());
}
return formatted.substring(formatted.length());
}
private String getFormattedNumber(char lastNonSeparator, boolean hasCursor) {
return hasCursor ? mFormatter.inputDigitAndRememberPosition(lastNonSeparator)
: mFormatter.inputDigit(lastNonSeparator);
}
private void stopFormatting() {
mStopFormatting = true;
mFormatter.clear();
}
private boolean hasSeparator(final CharSequence s, final int start, final int count) {
for (int i = start; i < start + count; i++) {
char c = s.charAt(i);
if (!PhoneNumberUtils.isNonSeparator(c)) {
return true;
}
}
return false;
}
}