使用 PhoneNumberFormattingTextWatcher 无需输入国家代码
Using PhoneNumberFormattingTextWatcher without typing country calling code
在我的应用程序的登录面板中，我将国家电话代码和剩余号码分成两个可编辑的 TextView，如下所示：
我想在右侧的 TextView 中使用国际格式标准。如果 phone 号码为 +905444444444 的用户在这些框中输入号码，我希望在左侧的框中看到“90”，在右侧的框中看到“544 444 4444”。
出于这个原因，我尝试使用以下使用 libphonenumber 的实现：
/**
* 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;
}
}
但是，此 TextWatcher 格式化数字包括调用代码。也就是说，它成功格式化了“+905444444444”，但无法格式化“54444444444”。当输入 phone 数字在右侧的 TextView 中包含国家代码时，如何获得相同的结果？不用说，但我想得到以下输出：
- 5
- 54
- 544
- 544 4
- 544 44
- 544 444
- 544 444 4
- 544 444 44 ...
我编辑了reformat(charSequence, cursor)方法，终于得到了没有国家代码的国际格式phone号码。如果你想得到相同的结果，你可以看到下面编辑的代码：
/**
* 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;
}
}
工作正常，但是...光标未设置在正确的位置。当用户在编辑文本中更改光标并输入数字时，光标会移动到末尾。我已经添加了 class 持有格式化的数字和位置，并且 return 它来自重新格式化方法。
return new InputFormatted(TextUtils.isEmpty(formatted) ? "" : formatted,
mFormatter.getRememberedPosition());
之后只设置
Selection.setSelection(s, formatted.getPosition());
感谢@Dorukhan Arslan 和@NixSam 的回答。接受的答案运行良好，但当用户更改中间某处的数字时会出现问题。另一个答案在那里有帮助，但对于某些边缘情况，它的行为并不像我想要的那样。所以我想用不同的方式解决它。此解决方案每次都使用 "digitsBeforeCursor" 来保持正确的光标位置 [希望:-)]。
对于所有面临此问题的人，您有两种选择可以解决此问题。
1。简单易用选项
如果您打算采用国际 phone 输入，您可以轻松灵活地使用 CCP Library which can give you total power for the full international number。它会让你做这样的事情。它将处理格式以及国家选择器（奖金）。
2。自定义选项
如果你想从头开始实现，你可以这样做。
- 通过在您的 gradle 文件中添加以下内容，将优化的 Android port of libphonenumber by Michael Rozumyanskiy 添加到您的项目中。
dependencies {
compile 'io.michaelrocks:libphonenumber-android:8.9.0'
}
- 创建一个名为
InternationalPhoneTextWatcher 的新 class
向其中添加以下代码 class。中共就用这个classhere。然后将此 class 的对象用于 editText。这将在构造函数中使用国家名称代码和 phone 代码。并将在调用 updateCountry() 更改国家/地区时自动更新格式。
public class InternationalPhoneTextWatcher implements TextWatcher {
// Reference to solve formatting issue
// Check parent project of this class at https://github.com/hbb20/CountryCodePickerProject
private static final String TAG = "Int'l Phone TextWatcher";
PhoneNumberUtil phoneNumberUtil;
/**
* 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 countryNameCode;
Editable lastFormatted = null;
private int countryPhoneCode;
//when country is changed, we update the number.
//at this point this will avoid "stopFormatting"
private boolean needUpdateForCountryChange = false;
/**
* @param context
* @param countryNameCode ISO 3166-1 two-letter country code that indicates the country/region
* where the phone number is being entered.
* @param countryPhoneCode Phone code of country. https://countrycode.org/
*/
public InternationalPhoneTextWatcher(Context context, String countryNameCode, int countryPhoneCode) {
if (countryNameCode == null || countryNameCode.length() == 0)
throw new IllegalArgumentException();
phoneNumberUtil = PhoneNumberUtil.createInstance(context);
updateCountry(countryNameCode, countryPhoneCode);
}
public void updateCountry(String countryNameCode, int countryPhoneCode) {
this.countryNameCode = countryNameCode;
this.countryPhoneCode = countryPhoneCode;
mFormatter = phoneNumberUtil.getAsYouTypeFormatter(countryNameCode);
mFormatter.clear();
if (lastFormatted != null) {
needUpdateForCountryChange = true;
String onlyDigits = phoneNumberUtil.normalizeDigitsOnly(lastFormatted);
lastFormatted.replace(0, lastFormatted.length(), onlyDigits, 0, onlyDigits.length());
needUpdateForCountryChange = false;
}
}
@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) && !needUpdateForCountryChange) {
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;
}
//calculate few things that will be helpful later
int selectionEnd = Selection.getSelectionEnd(s);
boolean isCursorAtEnd = (selectionEnd == s.length());
//get formatted text for this number
String formatted = reformat(s);
//now calculate cursor position in formatted text
int finalCursorPosition = 0;
if (formatted.equals(s.toString())) {
//means there is no change while formatting don't move cursor
finalCursorPosition = selectionEnd;
} else if (isCursorAtEnd) {
//if cursor was already at the end, put it at the end.
finalCursorPosition = formatted.length();
} else {
// if no earlier case matched, we will use "digitBeforeCursor" way to figure out the cursor position
int digitsBeforeCursor = 0;
for (int i = 0; i < s.length(); i++) {
if (i >= selectionEnd) {
break;
}
if (PhoneNumberUtils.isNonSeparator(s.charAt(i))) {
digitsBeforeCursor++;
}
}
//at this point we will have digitsBeforeCursor calculated.
// now find this position in formatted text
for (int i = 0, digitPassed = 0; i < formatted.length(); i++) {
if (digitPassed == digitsBeforeCursor) {
finalCursorPosition = i;
break;
}
if (PhoneNumberUtils.isNonSeparator(formatted.charAt(i))) {
digitPassed++;
}
}
}
//if this ends right before separator, we might wish to move it further so user do not delete separator by mistake.
// because deletion of separator will cause stop formatting that should not happen by mistake
if (!isCursorAtEnd) {
while (0 < finalCursorPosition - 1 && !PhoneNumberUtils.isNonSeparator(formatted.charAt(finalCursorPosition - 1))) {
finalCursorPosition--;
}
}
//Now we have everything calculated, set this values in
if (formatted != null) {
mSelfChange = true;
s.replace(0, s.length(), formatted, 0, formatted.length());
mSelfChange = false;
lastFormatted = s;
Selection.setSelection(s, finalCursorPosition);
}
}
/**
* this will format the number in international format (only).
*/
private String reformat(CharSequence s) {
String internationalFormatted = "";
mFormatter.clear();
char lastNonSeparator = 0;
String countryCallingCode = "+" + countryPhoneCode;
//to have number formatted as international format, add country code before that
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) {
internationalFormatted = mFormatter.inputDigit(lastNonSeparator);
}
lastNonSeparator = c;
}
}
if (lastNonSeparator != 0) {
internationalFormatted = mFormatter.inputDigit(lastNonSeparator);
}
internationalFormatted = internationalFormatted.trim();
if (internationalFormatted.length() > countryCallingCode.length()) {
if (internationalFormatted.charAt(countryCallingCode.length()) == ' ')
internationalFormatted = internationalFormatted.substring(countryCallingCode.length() + 1);
else
internationalFormatted = internationalFormatted.substring(countryCallingCode.length());
} else {
internationalFormatted = "";
}
return TextUtils.isEmpty(internationalFormatted) ? "" : internationalFormatted;
}
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;
}
}
CCP 库的完整示例：
布局：
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
>
<com.hbb20.CountryCodePicker
android:id="@+id/ccp"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:ccp_textSize="20sp"
android:layout_gravity="center"
app:ccp_flagBorderColor="@color/colorPrimary"
/>
<EditText
android:id="@+id/phone"
android:layout_width="0dp"
android:layout_weight="1"
android:layout_height="wrap_content"
android:textSize="20sp"
android:autofillHints="Enter phone number"
android:inputType="phone|numberDecimal"
android:hint="@string/your_phone"
tools:text="9000000000"
/>
</LinearLayout>
Activity/Fragment（在我的例子中 - 片段）：
package app.my.fragments;
import android.os.Bundle;
import android.text.Editable;
import android.text.TextWatcher;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.EditText;
import androidx.annotation.NonNull;
import androidx.fragment.app.Fragment;
import com.hbb20.CountryCodePicker;
import com.hbb20.InternationalPhoneTextWatcher;
import java.util.Locale;
import app.my.R;
import app.my.util.Logger;
import app.my.util.TextHelper;
public class LoginEnterPhoneFragment extends Fragment {
private final static String TAG = LoginEnterPhoneFragment.class.getSimpleName();
private EditText phoneNumberView;
private CountryCodePicker ccp;
private InternationalPhoneTextWatcher internationalPhoneTextWatcher;
@Override
public View onCreateView(@NonNull LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_login_phone, container, false);
phoneNumberView = view.findViewById(R.id.phone);
ccp = view.findViewById(R.id.ccp);
// Setting up ccp
ccp.setDefaultCountryUsingNameCode(Locale.getDefault().getCountry());
ccp.showNameCode(false);
ccp.setOnCountryChangeListener(new CountryCodePicker.OnCountryChangeListener() {
@Override
public void onCountrySelected() {
if (internationalPhoneTextWatcher != null) {
phoneNumberView.removeTextChangedListener(internationalPhoneTextWatcher);
}
internationalPhoneTextWatcher = new InternationalPhoneTextWatcher(getContext(), ccp.getSelectedCountryNameCode(), ccp.getSelectedCountryCodeAsInt());
phoneNumberView.addTextChangedListener(internationalPhoneTextWatcher);
// Triggering phoneNumberView.TextChanged to reformat phone number
if (TextHelper.isNotEmpty(phoneNumberView.getText().toString())) {
phoneNumberView.setText(String.format("+%s", phoneNumberView.getText()));
}
}
});
// Triggering ccp.CountryChanged to add InternationalPhoneTextWatcher to phoneNumberView
ccp.setCountryForNameCode(Locale.getDefault().getCountry());
// Setting up phoneNumberView
phoneNumberView.addTextChangedListener(new TextWatcher() {
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {}
@Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {}
@Override
public void afterTextChanged(Editable s) {
String original = s.toString().replaceAll("[^\d+]", "");
String result = original;
if (result.startsWith(ccp.getDefaultCountryCodeWithPlus())) {
result = result.substring(ccp.getDefaultCountryCodeWithPlus().length());
}
if (result.startsWith("+")) {
result = result.substring(1);
}
if (!original.equals(result)) {
phoneNumberView.setText(result);
}
}
});
return view;
}
}
在我的应用程序的登录面板中，我将国家电话代码和剩余号码分成两个可编辑的 TextView，如下所示：
我想在右侧的 TextView 中使用国际格式标准。如果 phone 号码为 +905444444444 的用户在这些框中输入号码，我希望在左侧的框中看到“90”，在右侧的框中看到“544 444 4444”。
出于这个原因，我尝试使用以下使用 libphonenumber 的实现：
/**
* 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;
}
}
但是，此 TextWatcher 格式化数字包括调用代码。也就是说，它成功格式化了“+905444444444”，但无法格式化“54444444444”。当输入 phone 数字在右侧的 TextView 中包含国家代码时，如何获得相同的结果？不用说，但我想得到以下输出：
- 5
- 54
- 544
- 544 4
- 544 44
- 544 444
- 544 444 4
- 544 444 44 ...
我编辑了reformat(charSequence, cursor)方法，终于得到了没有国家代码的国际格式phone号码。如果你想得到相同的结果，你可以看到下面编辑的代码：
/**
* 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;
}
}
工作正常，但是...光标未设置在正确的位置。当用户在编辑文本中更改光标并输入数字时，光标会移动到末尾。我已经添加了 class 持有格式化的数字和位置，并且 return 它来自重新格式化方法。
return new InputFormatted(TextUtils.isEmpty(formatted) ? "" : formatted,
mFormatter.getRememberedPosition());
之后只设置
Selection.setSelection(s, formatted.getPosition());
感谢@Dorukhan Arslan 和@NixSam 的回答。接受的答案运行良好，但当用户更改中间某处的数字时会出现问题。另一个答案在那里有帮助，但对于某些边缘情况，它的行为并不像我想要的那样。所以我想用不同的方式解决它。此解决方案每次都使用 "digitsBeforeCursor" 来保持正确的光标位置 [希望:-)]。
对于所有面临此问题的人，您有两种选择可以解决此问题。
1。简单易用选项
如果您打算采用国际 phone 输入，您可以轻松灵活地使用 CCP Library which can give you total power for the full international number。它会让你做这样的事情。它将处理格式以及国家选择器（奖金）。
2。自定义选项
如果你想从头开始实现，你可以这样做。
- 通过在您的 gradle 文件中添加以下内容，将优化的 Android port of libphonenumber by Michael Rozumyanskiy 添加到您的项目中。
dependencies { compile 'io.michaelrocks:libphonenumber-android:8.9.0' }
- 创建一个名为
InternationalPhoneTextWatcher 的新 class
向其中添加以下代码 class。中共就用这个classhere。然后将此 class 的对象用于 editText。这将在构造函数中使用国家名称代码和 phone 代码。并将在调用 updateCountry() 更改国家/地区时自动更新格式。
public class InternationalPhoneTextWatcher implements TextWatcher {
// Reference to solve formatting issue
// Check parent project of this class at https://github.com/hbb20/CountryCodePickerProject
private static final String TAG = "Int'l Phone TextWatcher";
PhoneNumberUtil phoneNumberUtil;
/**
* 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 countryNameCode;
Editable lastFormatted = null;
private int countryPhoneCode;
//when country is changed, we update the number.
//at this point this will avoid "stopFormatting"
private boolean needUpdateForCountryChange = false;
/**
* @param context
* @param countryNameCode ISO 3166-1 two-letter country code that indicates the country/region
* where the phone number is being entered.
* @param countryPhoneCode Phone code of country. https://countrycode.org/
*/
public InternationalPhoneTextWatcher(Context context, String countryNameCode, int countryPhoneCode) {
if (countryNameCode == null || countryNameCode.length() == 0)
throw new IllegalArgumentException();
phoneNumberUtil = PhoneNumberUtil.createInstance(context);
updateCountry(countryNameCode, countryPhoneCode);
}
public void updateCountry(String countryNameCode, int countryPhoneCode) {
this.countryNameCode = countryNameCode;
this.countryPhoneCode = countryPhoneCode;
mFormatter = phoneNumberUtil.getAsYouTypeFormatter(countryNameCode);
mFormatter.clear();
if (lastFormatted != null) {
needUpdateForCountryChange = true;
String onlyDigits = phoneNumberUtil.normalizeDigitsOnly(lastFormatted);
lastFormatted.replace(0, lastFormatted.length(), onlyDigits, 0, onlyDigits.length());
needUpdateForCountryChange = false;
}
}
@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) && !needUpdateForCountryChange) {
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;
}
//calculate few things that will be helpful later
int selectionEnd = Selection.getSelectionEnd(s);
boolean isCursorAtEnd = (selectionEnd == s.length());
//get formatted text for this number
String formatted = reformat(s);
//now calculate cursor position in formatted text
int finalCursorPosition = 0;
if (formatted.equals(s.toString())) {
//means there is no change while formatting don't move cursor
finalCursorPosition = selectionEnd;
} else if (isCursorAtEnd) {
//if cursor was already at the end, put it at the end.
finalCursorPosition = formatted.length();
} else {
// if no earlier case matched, we will use "digitBeforeCursor" way to figure out the cursor position
int digitsBeforeCursor = 0;
for (int i = 0; i < s.length(); i++) {
if (i >= selectionEnd) {
break;
}
if (PhoneNumberUtils.isNonSeparator(s.charAt(i))) {
digitsBeforeCursor++;
}
}
//at this point we will have digitsBeforeCursor calculated.
// now find this position in formatted text
for (int i = 0, digitPassed = 0; i < formatted.length(); i++) {
if (digitPassed == digitsBeforeCursor) {
finalCursorPosition = i;
break;
}
if (PhoneNumberUtils.isNonSeparator(formatted.charAt(i))) {
digitPassed++;
}
}
}
//if this ends right before separator, we might wish to move it further so user do not delete separator by mistake.
// because deletion of separator will cause stop formatting that should not happen by mistake
if (!isCursorAtEnd) {
while (0 < finalCursorPosition - 1 && !PhoneNumberUtils.isNonSeparator(formatted.charAt(finalCursorPosition - 1))) {
finalCursorPosition--;
}
}
//Now we have everything calculated, set this values in
if (formatted != null) {
mSelfChange = true;
s.replace(0, s.length(), formatted, 0, formatted.length());
mSelfChange = false;
lastFormatted = s;
Selection.setSelection(s, finalCursorPosition);
}
}
/**
* this will format the number in international format (only).
*/
private String reformat(CharSequence s) {
String internationalFormatted = "";
mFormatter.clear();
char lastNonSeparator = 0;
String countryCallingCode = "+" + countryPhoneCode;
//to have number formatted as international format, add country code before that
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) {
internationalFormatted = mFormatter.inputDigit(lastNonSeparator);
}
lastNonSeparator = c;
}
}
if (lastNonSeparator != 0) {
internationalFormatted = mFormatter.inputDigit(lastNonSeparator);
}
internationalFormatted = internationalFormatted.trim();
if (internationalFormatted.length() > countryCallingCode.length()) {
if (internationalFormatted.charAt(countryCallingCode.length()) == ' ')
internationalFormatted = internationalFormatted.substring(countryCallingCode.length() + 1);
else
internationalFormatted = internationalFormatted.substring(countryCallingCode.length());
} else {
internationalFormatted = "";
}
return TextUtils.isEmpty(internationalFormatted) ? "" : internationalFormatted;
}
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;
}
}
CCP 库的完整示例：
布局：
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
>
<com.hbb20.CountryCodePicker
android:id="@+id/ccp"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:ccp_textSize="20sp"
android:layout_gravity="center"
app:ccp_flagBorderColor="@color/colorPrimary"
/>
<EditText
android:id="@+id/phone"
android:layout_width="0dp"
android:layout_weight="1"
android:layout_height="wrap_content"
android:textSize="20sp"
android:autofillHints="Enter phone number"
android:inputType="phone|numberDecimal"
android:hint="@string/your_phone"
tools:text="9000000000"
/>
</LinearLayout>
Activity/Fragment（在我的例子中 - 片段）：
package app.my.fragments;
import android.os.Bundle;
import android.text.Editable;
import android.text.TextWatcher;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.EditText;
import androidx.annotation.NonNull;
import androidx.fragment.app.Fragment;
import com.hbb20.CountryCodePicker;
import com.hbb20.InternationalPhoneTextWatcher;
import java.util.Locale;
import app.my.R;
import app.my.util.Logger;
import app.my.util.TextHelper;
public class LoginEnterPhoneFragment extends Fragment {
private final static String TAG = LoginEnterPhoneFragment.class.getSimpleName();
private EditText phoneNumberView;
private CountryCodePicker ccp;
private InternationalPhoneTextWatcher internationalPhoneTextWatcher;
@Override
public View onCreateView(@NonNull LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_login_phone, container, false);
phoneNumberView = view.findViewById(R.id.phone);
ccp = view.findViewById(R.id.ccp);
// Setting up ccp
ccp.setDefaultCountryUsingNameCode(Locale.getDefault().getCountry());
ccp.showNameCode(false);
ccp.setOnCountryChangeListener(new CountryCodePicker.OnCountryChangeListener() {
@Override
public void onCountrySelected() {
if (internationalPhoneTextWatcher != null) {
phoneNumberView.removeTextChangedListener(internationalPhoneTextWatcher);
}
internationalPhoneTextWatcher = new InternationalPhoneTextWatcher(getContext(), ccp.getSelectedCountryNameCode(), ccp.getSelectedCountryCodeAsInt());
phoneNumberView.addTextChangedListener(internationalPhoneTextWatcher);
// Triggering phoneNumberView.TextChanged to reformat phone number
if (TextHelper.isNotEmpty(phoneNumberView.getText().toString())) {
phoneNumberView.setText(String.format("+%s", phoneNumberView.getText()));
}
}
});
// Triggering ccp.CountryChanged to add InternationalPhoneTextWatcher to phoneNumberView
ccp.setCountryForNameCode(Locale.getDefault().getCountry());
// Setting up phoneNumberView
phoneNumberView.addTextChangedListener(new TextWatcher() {
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {}
@Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {}
@Override
public void afterTextChanged(Editable s) {
String original = s.toString().replaceAll("[^\d+]", "");
String result = original;
if (result.startsWith(ccp.getDefaultCountryCodeWithPlus())) {
result = result.substring(ccp.getDefaultCountryCodeWithPlus().length());
}
if (result.startsWith("+")) {
result = result.substring(1);
}
if (!original.equals(result)) {
phoneNumberView.setText(result);
}
}
});
return view;
}
}